Commit | Line | Data |
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a0d0e21e LW |
1 | =head1 NAME |
2 | ||
3 | perldiag - various Perl diagnostics | |
4 | ||
5 | =head1 DESCRIPTION | |
6 | ||
7 | These messages are classified as follows (listed in increasing order of | |
8 | desperation): | |
9 | ||
10 | (W) A warning (optional). | |
d1d15184 | 11 | (D) A deprecation (enabled by default). |
00eb3f2b | 12 | (S) A severe warning (enabled by default). |
a0d0e21e LW |
13 | (F) A fatal error (trappable). |
14 | (P) An internal error you should never see (trappable). | |
54310121 | 15 | (X) A very fatal error (nontrappable). |
cb1a09d0 | 16 | (A) An alien error message (not generated by Perl). |
a0d0e21e | 17 | |
75b44862 | 18 | The majority of messages from the first three classifications above |
64977eb6 | 19 | (W, D & S) can be controlled using the C<warnings> pragma. |
e476b1b5 GS |
20 | |
21 | If a message can be controlled by the C<warnings> pragma, its warning | |
22 | category is included with the classification letter in the description | |
23 | below. | |
24 | ||
25 | Optional warnings are enabled by using the C<warnings> pragma or the B<-w> | |
26 | and B<-W> switches. Warnings may be captured by setting C<$SIG{__WARN__}> | |
27 | to a reference to a routine that will be called on each warning instead | |
28 | of printing it. See L<perlvar>. | |
29 | ||
b7eceb5b | 30 | Severe warnings are always enabled, unless they are explicitly disabled |
e476b1b5 | 31 | with the C<warnings> pragma or the B<-X> switch. |
4438c4b7 | 32 | |
748a9306 | 33 | Trappable errors may be trapped using the eval operator. See |
4438c4b7 JH |
34 | L<perlfunc/eval>. In almost all cases, warnings may be selectively |
35 | disabled or promoted to fatal errors using the C<warnings> pragma. | |
36 | See L<warnings>. | |
a0d0e21e | 37 | |
6df41af2 GS |
38 | The messages are in alphabetical order, without regard to upper or |
39 | lower-case. Some of these messages are generic. Spots that vary are | |
40 | denoted with a %s or other printf-style escape. These escapes are | |
41 | ignored by the alphabetical order, as are all characters other than | |
42 | letters. To look up your message, just ignore anything that is not a | |
43 | letter. | |
a0d0e21e LW |
44 | |
45 | =over 4 | |
46 | ||
6df41af2 | 47 | =item accept() on closed socket %s |
33633739 | 48 | |
be771a83 GS |
49 | (W closed) You tried to do an accept on a closed socket. Did you forget |
50 | to check the return value of your socket() call? See | |
51 | L<perlfunc/accept>. | |
33633739 | 52 | |
6df41af2 | 53 | =item Allocation too large: %lx |
a0d0e21e | 54 | |
6df41af2 | 55 | (X) You can't allocate more than 64K on an MS-DOS machine. |
a0d0e21e | 56 | |
1109a392 | 57 | =item '%c' allowed only after types %s |
ef54e1a4 | 58 | |
1109a392 MHM |
59 | (F) The modifiers '!', '<' and '>' are allowed in pack() or unpack() only |
60 | after certain types. See L<perlfunc/pack>. | |
ef54e1a4 | 61 | |
6df41af2 | 62 | =item Ambiguous call resolved as CORE::%s(), qualify as such or use & |
43192e07 | 63 | |
75b44862 | 64 | (W ambiguous) A subroutine you have declared has the same name as a Perl |
be771a83 GS |
65 | keyword, and you have used the name without qualification for calling |
66 | one or the other. Perl decided to call the builtin because the | |
67 | subroutine is not imported. | |
43192e07 | 68 | |
6df41af2 GS |
69 | To force interpretation as a subroutine call, either put an ampersand |
70 | before the subroutine name, or qualify the name with its package. | |
71 | Alternatively, you can import the subroutine (or pretend that it's | |
72 | imported with the C<use subs> pragma). | |
43192e07 | 73 | |
6df41af2 | 74 | To silently interpret it as the Perl operator, use the C<CORE::> prefix |
496a33f5 | 75 | on the operator (e.g. C<CORE::log($x)>) or declare the subroutine |
be771a83 GS |
76 | to be an object method (see L<perlsub/"Subroutine Attributes"> or |
77 | L<attributes>). | |
43192e07 | 78 | |
c2e66d9e GS |
79 | =item Ambiguous range in transliteration operator |
80 | ||
81 | (F) You wrote something like C<tr/a-z-0//> which doesn't mean anything at | |
82 | all. To include a C<-> character in a transliteration, put it either | |
83 | first or last. (In the past, C<tr/a-z-0//> was synonymous with | |
84 | C<tr/a-y//>, which was probably not what you would have expected.) | |
85 | ||
6df41af2 | 86 | =item Ambiguous use of %s resolved as %s |
43192e07 | 87 | |
6df41af2 GS |
88 | (W ambiguous)(S) You said something that may not be interpreted the way |
89 | you thought. Normally it's pretty easy to disambiguate it by supplying | |
90 | a missing quote, operator, parenthesis pair or declaration. | |
a0d0e21e | 91 | |
6df41af2 | 92 | =item '|' and '<' may not both be specified on command line |
a0d0e21e | 93 | |
be771a83 GS |
94 | (F) An error peculiar to VMS. Perl does its own command line |
95 | redirection, and found that STDIN was a pipe, and that you also tried to | |
96 | redirect STDIN using '<'. Only one STDIN stream to a customer, please. | |
c9f97d15 | 97 | |
6df41af2 | 98 | =item '|' and '>' may not both be specified on command line |
1028017a | 99 | |
be771a83 GS |
100 | (F) An error peculiar to VMS. Perl does its own command line |
101 | redirection, and thinks you tried to redirect stdout both to a file and | |
102 | into a pipe to another command. You need to choose one or the other, | |
103 | though nothing's stopping you from piping into a program or Perl script | |
104 | which 'splits' output into two streams, such as | |
1028017a | 105 | |
6df41af2 GS |
106 | open(OUT,">$ARGV[0]") or die "Can't write to $ARGV[0]: $!"; |
107 | while (<STDIN>) { | |
108 | print; | |
109 | print OUT; | |
110 | } | |
111 | close OUT; | |
c9f97d15 | 112 | |
6df41af2 | 113 | =item Applying %s to %s will act on scalar(%s) |
eb6e2d6f | 114 | |
496a33f5 SC |
115 | (W misc) The pattern match (C<//>), substitution (C<s///>), and |
116 | transliteration (C<tr///>) operators work on scalar values. If you apply | |
be771a83 GS |
117 | one of them to an array or a hash, it will convert the array or hash to |
118 | a scalar value -- the length of an array, or the population info of a | |
119 | hash -- and then work on that scalar value. This is probably not what | |
120 | you meant to do. See L<perlfunc/grep> and L<perlfunc/map> for | |
121 | alternatives. | |
eb6e2d6f | 122 | |
6df41af2 | 123 | =item Args must match #! line |
a0d0e21e | 124 | |
6df41af2 GS |
125 | (F) The setuid emulator requires that the arguments Perl was invoked |
126 | with match the arguments specified on the #! line. Since some systems | |
127 | impose a one-argument limit on the #! line, try combining switches; | |
128 | for example, turn C<-w -U> into C<-wU>. | |
a0d0e21e | 129 | |
6df41af2 | 130 | =item Arg too short for msgsnd |
76cd736e | 131 | |
6df41af2 | 132 | (F) msgsnd() requires a string at least as long as sizeof(long). |
76cd736e | 133 | |
b0fdf69e | 134 | =item %s argument is not a HASH or ARRAY element or a subroutine |
a0d0e21e | 135 | |
cc1c2e42 FC |
136 | (F) The argument to exists() must be a hash or array element or a |
137 | subroutine with an ampersand, such as: | |
a0d0e21e LW |
138 | |
139 | $foo{$bar} | |
cb4f522a | 140 | $ref->{"susie"}[12] |
cc1c2e42 | 141 | &do_something |
a0d0e21e | 142 | |
8ea97a1e | 143 | =item %s argument is not a HASH or ARRAY element or slice |
5f05dabc | 144 | |
06e52bfa FC |
145 | (F) The argument to delete() must be either a hash or array element, |
146 | such as: | |
5f05dabc | 147 | |
148 | $foo{$bar} | |
cb4f522a | 149 | $ref->{"susie"}[12] |
5f05dabc | 150 | |
8ea97a1e | 151 | or a hash or array slice, such as: |
5f05dabc | 152 | |
6df41af2 GS |
153 | @foo[$bar, $baz, $xyzzy] |
154 | @{$ref->[12]}{"susie", "queue"} | |
5315574d | 155 | |
6df41af2 | 156 | =item %s argument is not a subroutine name |
a0d0e21e | 157 | |
6df41af2 | 158 | (F) The argument to exists() for C<exists &sub> must be a subroutine |
be771a83 GS |
159 | name, and not a subroutine call. C<exists &sub()> will generate this |
160 | error. | |
a0d0e21e | 161 | |
f86702cc | 162 | =item Argument "%s" isn't numeric%s |
a0d0e21e | 163 | |
be771a83 GS |
164 | (W numeric) The indicated string was fed as an argument to an operator |
165 | that expected a numeric value instead. If you're fortunate the message | |
166 | will identify which operator was so unfortunate. | |
a0d0e21e | 167 | |
b4581f09 JH |
168 | =item Argument list not closed for PerlIO layer "%s" |
169 | ||
170 | (W layer) When pushing a layer with arguments onto the Perl I/O system you | |
171 | forgot the ) that closes the argument list. (Layers take care of transforming | |
172 | data between external and internal representations.) Perl stopped parsing | |
173 | the layer list at this point and did not attempt to push this layer. | |
174 | If your program didn't explicitly request the failing operation, it may be | |
175 | the result of the value of the environment variable PERLIO. | |
176 | ||
a0d0e21e LW |
177 | =item Array @%s missing the @ in argument %d of %s() |
178 | ||
75b44862 GS |
179 | (D deprecated) Really old Perl let you omit the @ on array names in some |
180 | spots. This is now heavily deprecated. | |
a0d0e21e LW |
181 | |
182 | =item assertion botched: %s | |
183 | ||
184 | (P) The malloc package that comes with Perl had an internal failure. | |
185 | ||
186 | =item Assertion failed: file "%s" | |
187 | ||
188 | (P) A general assertion failed. The file in question must be examined. | |
189 | ||
190 | =item Assignment to both a list and a scalar | |
191 | ||
192 | (F) If you assign to a conditional operator, the 2nd and 3rd arguments | |
193 | must either both be scalars or both be lists. Otherwise Perl won't | |
194 | know which context to supply to the right side. | |
195 | ||
96ebfdd7 RK |
196 | =item A thread exited while %d threads were running |
197 | ||
4447dfc1 | 198 | (W threads)(S) When using threaded Perl, a thread (not necessarily the main |
96ebfdd7 RK |
199 | thread) exited while there were still other threads running. |
200 | Usually it's a good idea to first collect the return values of the | |
201 | created threads by joining them, and only then exit from the main | |
202 | thread. See L<threads>. | |
203 | ||
2393f1b9 | 204 | =item Attempt to access disallowed key '%s' in a restricted hash |
1b1f1335 | 205 | |
49293501 | 206 | (F) The failing code has attempted to get or set a key which is not in |
2393f1b9 | 207 | the current set of allowed keys of a restricted hash. |
49293501 | 208 | |
81689caa HS |
209 | =item Attempt to bless into a reference |
210 | ||
211 | (F) The CLASSNAME argument to the bless() operator is expected to be | |
212 | the name of the package to bless the resulting object into. You've | |
213 | supplied instead a reference to something: perhaps you wrote | |
214 | ||
215 | bless $self, $proto; | |
216 | ||
217 | when you intended | |
218 | ||
219 | bless $self, ref($proto) || $proto; | |
220 | ||
221 | If you actually want to bless into the stringified version | |
222 | of the reference supplied, you need to stringify it yourself, for | |
223 | example by: | |
224 | ||
225 | bless $self, "$proto"; | |
226 | ||
96ebfdd7 RK |
227 | =item Attempt to delete disallowed key '%s' from a restricted hash |
228 | ||
229 | (F) The failing code attempted to delete from a restricted hash a key | |
230 | which is not in its key set. | |
231 | ||
232 | =item Attempt to delete readonly key '%s' from a restricted hash | |
233 | ||
234 | (F) The failing code attempted to delete a key whose value has been | |
235 | declared readonly from a restricted hash. | |
236 | ||
a0d0e21e LW |
237 | =item Attempt to free non-arena SV: 0x%lx |
238 | ||
be771a83 GS |
239 | (P internal) All SV objects are supposed to be allocated from arenas |
240 | that will be garbage collected on exit. An SV was discovered to be | |
241 | outside any of those arenas. | |
a0d0e21e | 242 | |
54310121 | 243 | =item Attempt to free nonexistent shared string |
bbce6d69 | 244 | |
be771a83 GS |
245 | (P internal) Perl maintains a reference counted internal table of |
246 | strings to optimize the storage and access of hash keys and other | |
247 | strings. This indicates someone tried to decrement the reference count | |
248 | of a string that can no longer be found in the table. | |
bbce6d69 | 249 | |
a0d0e21e LW |
250 | =item Attempt to free temp prematurely |
251 | ||
be771a83 GS |
252 | (W debugging) Mortalized values are supposed to be freed by the |
253 | free_tmps() routine. This indicates that something else is freeing the | |
254 | SV before the free_tmps() routine gets a chance, which means that the | |
255 | free_tmps() routine will be freeing an unreferenced scalar when it does | |
256 | try to free it. | |
a0d0e21e LW |
257 | |
258 | =item Attempt to free unreferenced glob pointers | |
259 | ||
e476b1b5 | 260 | (P internal) The reference counts got screwed up on symbol aliases. |
a0d0e21e LW |
261 | |
262 | =item Attempt to free unreferenced scalar | |
263 | ||
be771a83 GS |
264 | (W internal) Perl went to decrement the reference count of a scalar to |
265 | see if it would go to 0, and discovered that it had already gone to 0 | |
266 | earlier, and should have been freed, and in fact, probably was freed. | |
267 | This could indicate that SvREFCNT_dec() was called too many times, or | |
268 | that SvREFCNT_inc() was called too few times, or that the SV was | |
269 | mortalized when it shouldn't have been, or that memory has been | |
270 | corrupted. | |
a0d0e21e | 271 | |
dcdda58d GS |
272 | =item Attempt to join self |
273 | ||
274 | (F) You tried to join a thread from within itself, which is an | |
be771a83 GS |
275 | impossible task. You may be joining the wrong thread, or you may need |
276 | to move the join() to some other thread. | |
dcdda58d | 277 | |
84902520 TB |
278 | =item Attempt to pack pointer to temporary value |
279 | ||
be771a83 GS |
280 | (W pack) You tried to pass a temporary value (like the result of a |
281 | function, or a computed expression) to the "p" pack() template. This | |
282 | means the result contains a pointer to a location that could become | |
283 | invalid anytime, even before the end of the current statement. Use | |
284 | literals or global values as arguments to the "p" pack() template to | |
285 | avoid this warning. | |
84902520 | 286 | |
087b5369 RD |
287 | =item Attempt to reload %s aborted. |
288 | ||
289 | (F) You tried to load a file with C<use> or C<require> that failed to | |
290 | compile once already. Perl will not try to compile this file again | |
291 | unless you delete its entry from %INC. See L<perlfunc/require> and | |
292 | L<perlvar/%INC>. | |
293 | ||
1b20cd17 NC |
294 | =item Attempt to set length of freed array |
295 | ||
296 | (W) You tried to set the length of an array which has been freed. You | |
297 | can do this by storing a reference to the scalar representing the last index | |
298 | of an array and later assigning through that reference. For example | |
299 | ||
300 | $r = do {my @a; \$#a}; | |
301 | $$r = 503 | |
302 | ||
b7a902f4 | 303 | =item Attempt to use reference as lvalue in substr |
304 | ||
be771a83 GS |
305 | (W substr) You supplied a reference as the first argument to substr() |
306 | used as an lvalue, which is pretty strange. Perhaps you forgot to | |
307 | dereference it first. See L<perlfunc/substr>. | |
b7a902f4 | 308 | |
c32124fe NC |
309 | =item Attribute "locked" is deprecated |
310 | ||
311 | (D deprecated) You have used the attributes pragam to modify the "locked" | |
312 | attribute on a code reference. The :locked attribute is obsolete, has had no | |
313 | effect since 5005 threads were removed, and will be removed in the next major | |
314 | release of Perl 5. | |
315 | ||
f1a3ce43 NC |
316 | =item Attribute "unique" is deprecated |
317 | ||
318 | (D deprecated) You have used the attributes pragam to modify the "unique" | |
b7a2910f | 319 | attribute on an array, hash or scalar reference. The :unique attribute has |
259976bd | 320 | had no effect since Perl 5.8.8, and will be removed in the next major |
f1a3ce43 NC |
321 | release of Perl 5. |
322 | ||
fe13d51d | 323 | =item Bad arg length for %s, is %d, should be %d |
a0d0e21e | 324 | |
be771a83 GS |
325 | (F) You passed a buffer of the wrong size to one of msgctl(), semctl() |
326 | or shmctl(). In C parlance, the correct sizes are, respectively, | |
5f05dabc | 327 | S<sizeof(struct msqid_ds *)>, S<sizeof(struct semid_ds *)>, and |
a0d0e21e LW |
328 | S<sizeof(struct shmid_ds *)>. |
329 | ||
7a95317d GS |
330 | =item Bad evalled substitution pattern |
331 | ||
496a33f5 | 332 | (F) You've used the C</e> switch to evaluate the replacement for a |
7a95317d GS |
333 | substitution, but perl found a syntax error in the code to evaluate, |
334 | most likely an unexpected right brace '}'. | |
335 | ||
a0d0e21e LW |
336 | =item Bad filehandle: %s |
337 | ||
be771a83 GS |
338 | (F) A symbol was passed to something wanting a filehandle, but the |
339 | symbol has no filehandle associated with it. Perhaps you didn't do an | |
340 | open(), or did it in another package. | |
a0d0e21e LW |
341 | |
342 | =item Bad free() ignored | |
343 | ||
be771a83 GS |
344 | (S malloc) An internal routine called free() on something that had never |
345 | been malloc()ed in the first place. Mandatory, but can be disabled by | |
9ea8bc6d | 346 | setting environment variable C<PERL_BADFREE> to 0. |
33c8a3fe | 347 | |
9ea8bc6d | 348 | This message can be seen quite often with DB_File on systems with "hard" |
be771a83 GS |
349 | dynamic linking, like C<AIX> and C<OS/2>. It is a bug of C<Berkeley DB> |
350 | which is left unnoticed if C<DB> uses I<forgiving> system malloc(). | |
a0d0e21e | 351 | |
aa689395 | 352 | =item Bad hash |
353 | ||
354 | (P) One of the internal hash routines was passed a null HV pointer. | |
355 | ||
6df41af2 GS |
356 | =item Badly placed ()'s |
357 | ||
358 | (A) You've accidentally run your script through B<csh> instead | |
359 | of Perl. Check the #! line, or manually feed your script into | |
360 | Perl yourself. | |
361 | ||
a0d0e21e LW |
362 | =item Bad name after %s:: |
363 | ||
be771a83 GS |
364 | (F) You started to name a symbol by using a package prefix, and then |
365 | didn't finish the symbol. In particular, you can't interpolate outside | |
366 | of quotes, so | |
a0d0e21e LW |
367 | |
368 | $var = 'myvar'; | |
369 | $sym = mypack::$var; | |
370 | ||
371 | is not the same as | |
372 | ||
373 | $var = 'myvar'; | |
374 | $sym = "mypack::$var"; | |
375 | ||
88e1f1a2 JV |
376 | =item Bad plugin affecting keyword '%s' |
377 | ||
378 | (F) An extension using the keyword plugin mechanism violated the | |
379 | plugin API. | |
380 | ||
4ad56ec9 IZ |
381 | =item Bad realloc() ignored |
382 | ||
be771a83 GS |
383 | (S malloc) An internal routine called realloc() on something that had |
384 | never been malloc()ed in the first place. Mandatory, but can be disabled | |
385 | by setting environment variable C<PERL_BADFREE> to 1. | |
4ad56ec9 | 386 | |
a0d0e21e LW |
387 | =item Bad symbol for array |
388 | ||
389 | (P) An internal request asked to add an array entry to something that | |
390 | wasn't a symbol table entry. | |
391 | ||
4df3f177 SP |
392 | =item Bad symbol for dirhandle |
393 | ||
394 | (P) An internal request asked to add a dirhandle entry to something | |
395 | that wasn't a symbol table entry. | |
396 | ||
397 | ||
a0d0e21e LW |
398 | =item Bad symbol for filehandle |
399 | ||
be771a83 GS |
400 | (P) An internal request asked to add a filehandle entry to something |
401 | that wasn't a symbol table entry. | |
a0d0e21e LW |
402 | |
403 | =item Bad symbol for hash | |
404 | ||
405 | (P) An internal request asked to add a hash entry to something that | |
406 | wasn't a symbol table entry. | |
407 | ||
34d09196 GS |
408 | =item Bareword found in conditional |
409 | ||
be771a83 GS |
410 | (W bareword) The compiler found a bareword where it expected a |
411 | conditional, which often indicates that an || or && was parsed as part | |
412 | of the last argument of the previous construct, for example: | |
34d09196 GS |
413 | |
414 | open FOO || die; | |
415 | ||
be771a83 GS |
416 | It may also indicate a misspelled constant that has been interpreted as |
417 | a bareword: | |
34d09196 GS |
418 | |
419 | use constant TYPO => 1; | |
420 | if (TYOP) { print "foo" } | |
421 | ||
422 | The C<strict> pragma is useful in avoiding such errors. | |
423 | ||
6df41af2 GS |
424 | =item Bareword "%s" not allowed while "strict subs" in use |
425 | ||
426 | (F) With "strict subs" in use, a bareword is only allowed as a | |
be771a83 GS |
427 | subroutine identifier, in curly brackets or to the left of the "=>" |
428 | symbol. Perhaps you need to predeclare a subroutine? | |
6df41af2 GS |
429 | |
430 | =item Bareword "%s" refers to nonexistent package | |
431 | ||
be771a83 GS |
432 | (W bareword) You used a qualified bareword of the form C<Foo::>, but the |
433 | compiler saw no other uses of that namespace before that point. Perhaps | |
434 | you need to predeclare a package? | |
6df41af2 | 435 | |
a0d0e21e LW |
436 | =item BEGIN failed--compilation aborted |
437 | ||
be771a83 GS |
438 | (F) An untrapped exception was raised while executing a BEGIN |
439 | subroutine. Compilation stops immediately and the interpreter is | |
440 | exited. | |
a0d0e21e | 441 | |
68dc0745 | 442 | =item BEGIN not safe after errors--compilation aborted |
443 | ||
444 | (F) Perl found a C<BEGIN {}> subroutine (or a C<use> directive, which | |
be771a83 GS |
445 | implies a C<BEGIN {}>) after one or more compilation errors had already |
446 | occurred. Since the intended environment for the C<BEGIN {}> could not | |
447 | be guaranteed (due to the errors), and since subsequent code likely | |
448 | depends on its correct operation, Perl just gave up. | |
68dc0745 | 449 | |
6df41af2 GS |
450 | =item \1 better written as $1 |
451 | ||
be771a83 GS |
452 | (W syntax) Outside of patterns, backreferences live on as variables. |
453 | The use of backslashes is grandfathered on the right-hand side of a | |
454 | substitution, but stylistically it's better to use the variable form | |
455 | because other Perl programmers will expect it, and it works better if | |
456 | there are more than 9 backreferences. | |
6df41af2 | 457 | |
252aa082 JH |
458 | =item Binary number > 0b11111111111111111111111111111111 non-portable |
459 | ||
e476b1b5 | 460 | (W portable) The binary number you specified is larger than 2**32-1 |
9e24b6e2 JH |
461 | (4294967295) and therefore non-portable between systems. See |
462 | L<perlport> for more on portability concerns. | |
252aa082 | 463 | |
69282e91 | 464 | =item bind() on closed socket %s |
a0d0e21e | 465 | |
be771a83 GS |
466 | (W closed) You tried to do a bind on a closed socket. Did you forget to |
467 | check the return value of your socket() call? See L<perlfunc/bind>. | |
a0d0e21e | 468 | |
c289d2f7 JH |
469 | =item binmode() on closed filehandle %s |
470 | ||
471 | (W unopened) You tried binmode() on a filehandle that was never opened. | |
472 | Check you control flow and number of arguments. | |
473 | ||
c5a0f51a JH |
474 | =item Bit vector size > 32 non-portable |
475 | ||
e476b1b5 | 476 | (W portable) Using bit vector sizes larger than 32 is non-portable. |
c5a0f51a | 477 | |
4633a7c4 LW |
478 | =item Bizarre copy of %s in %s |
479 | ||
be771a83 | 480 | (P) Perl detected an attempt to copy an internal value that is not |
b45f050a | 481 | copyable. |
4633a7c4 | 482 | |
f675dbe5 CB |
483 | =item Buffer overflow in prime_env_iter: %s |
484 | ||
be771a83 GS |
485 | (W internal) A warning peculiar to VMS. While Perl was preparing to |
486 | iterate over %ENV, it encountered a logical name or symbol definition | |
487 | which was too long, so it was truncated to the string shown. | |
f675dbe5 | 488 | |
a0d0e21e LW |
489 | =item Callback called exit |
490 | ||
4929bf7b | 491 | (F) A subroutine invoked from an external package via call_sv() |
a0d0e21e LW |
492 | exited by calling exit. |
493 | ||
6df41af2 | 494 | =item %s() called too early to check prototype |
f675dbe5 | 495 | |
be771a83 GS |
496 | (W prototype) You've called a function that has a prototype before the |
497 | parser saw a definition or declaration for it, and Perl could not check | |
498 | that the call conforms to the prototype. You need to either add an | |
499 | early prototype declaration for the subroutine in question, or move the | |
500 | subroutine definition ahead of the call to get proper prototype | |
501 | checking. Alternatively, if you are certain that you're calling the | |
502 | function correctly, you may put an ampersand before the name to avoid | |
503 | the warning. See L<perlsub>. | |
f675dbe5 | 504 | |
49704364 | 505 | =item Cannot compress integer in pack |
0258719b NC |
506 | |
507 | (F) An argument to pack("w",...) was too large to compress. The BER | |
508 | compressed integer format can only be used with positive integers, and you | |
509 | attempted to compress Infinity or a very large number (> 1e308). | |
510 | See L<perlfunc/pack>. | |
511 | ||
49704364 | 512 | =item Cannot compress negative numbers in pack |
0258719b NC |
513 | |
514 | (F) An argument to pack("w",...) was negative. The BER compressed integer | |
515 | format can only be used with positive integers. See L<perlfunc/pack>. | |
516 | ||
5c1f4d79 NC |
517 | =item Cannot convert a reference to %s to typeglob |
518 | ||
519 | (F) You manipulated Perl's symbol table directly, stored a reference in it, | |
520 | then tried to access that symbol via conventional Perl syntax. The access | |
521 | triggers Perl to autovivify that typeglob, but it there is no legal conversion | |
522 | from that type of reference to a typeglob. | |
523 | ||
ba2fdce6 NC |
524 | =item Cannot copy to %s in %s |
525 | ||
526 | (P) Perl detected an attempt to copy a value to an internal type that cannot | |
527 | be directly assigned not. | |
528 | ||
96ebfdd7 RK |
529 | =item Can only compress unsigned integers in pack |
530 | ||
531 | (F) An argument to pack("w",...) was not an integer. The BER compressed | |
532 | integer format can only be used with positive integers, and you attempted | |
533 | to compress something else. See L<perlfunc/pack>. | |
534 | ||
a0d0e21e LW |
535 | =item Can't bless non-reference value |
536 | ||
537 | (F) Only hard references may be blessed. This is how Perl "enforces" | |
538 | encapsulation of objects. See L<perlobj>. | |
539 | ||
dc57907a RGS |
540 | =item Can't "break" in a loop topicalizer |
541 | ||
0d863452 RH |
542 | (F) You called C<break>, but you're in a C<foreach> block rather than |
543 | a C<given> block. You probably meant to use C<next> or C<last>. | |
544 | ||
545 | =item Can't "break" outside a given block | |
dc57907a | 546 | |
0d863452 RH |
547 | (F) You called C<break>, but you're not inside a C<given> block. |
548 | ||
a0d0e21e LW |
549 | =item Can't call method "%s" in empty package "%s" |
550 | ||
551 | (F) You called a method correctly, and it correctly indicated a package | |
552 | functioning as a class, but that package doesn't have ANYTHING defined | |
553 | in it, let alone methods. See L<perlobj>. | |
554 | ||
6df41af2 GS |
555 | =item Can't call method "%s" on an undefined value |
556 | ||
557 | (F) You used the syntax of a method call, but the slot filled by the | |
be771a83 GS |
558 | object reference or package name contains an undefined value. Something |
559 | like this will reproduce the error: | |
6df41af2 GS |
560 | |
561 | $BADREF = undef; | |
562 | process $BADREF 1,2,3; | |
563 | $BADREF->process(1,2,3); | |
564 | ||
a0d0e21e LW |
565 | =item Can't call method "%s" on unblessed reference |
566 | ||
54310121 | 567 | (F) A method call must know in what package it's supposed to run. It |
be771a83 GS |
568 | ordinarily finds this out from the object reference you supply, but you |
569 | didn't supply an object reference in this case. A reference isn't an | |
570 | object reference until it has been blessed. See L<perlobj>. | |
a0d0e21e LW |
571 | |
572 | =item Can't call method "%s" without a package or object reference | |
573 | ||
574 | (F) You used the syntax of a method call, but the slot filled by the | |
be771a83 GS |
575 | object reference or package name contains an expression that returns a |
576 | defined value which is neither an object reference nor a package name. | |
72b5445b GS |
577 | Something like this will reproduce the error: |
578 | ||
579 | $BADREF = 42; | |
580 | process $BADREF 1,2,3; | |
581 | $BADREF->process(1,2,3); | |
582 | ||
a0d0e21e LW |
583 | =item Can't chdir to %s |
584 | ||
585 | (F) You called C<perl -x/foo/bar>, but C</foo/bar> is not a directory | |
586 | that you can chdir to, possibly because it doesn't exist. | |
587 | ||
0545a864 | 588 | =item Can't check filesystem of script "%s" for nosuid |
104d25b7 | 589 | |
be771a83 GS |
590 | (P) For some reason you can't check the filesystem of the script for |
591 | nosuid. | |
104d25b7 | 592 | |
6df41af2 GS |
593 | =item Can't coerce array into hash |
594 | ||
595 | (F) You used an array where a hash was expected, but the array has no | |
596 | information on how to map from keys to array indices. You can do that | |
597 | only with arrays that have a hash reference at index 0. | |
598 | ||
a0d0e21e LW |
599 | =item Can't coerce %s to integer in %s |
600 | ||
601 | (F) Certain types of SVs, in particular real symbol table entries | |
55497cff | 602 | (typeglobs), can't be forced to stop being what they are. So you can't |
a0d0e21e LW |
603 | say things like: |
604 | ||
605 | *foo += 1; | |
606 | ||
607 | You CAN say | |
608 | ||
609 | $foo = *foo; | |
610 | $foo += 1; | |
611 | ||
612 | but then $foo no longer contains a glob. | |
613 | ||
614 | =item Can't coerce %s to number in %s | |
615 | ||
616 | (F) Certain types of SVs, in particular real symbol table entries | |
55497cff | 617 | (typeglobs), can't be forced to stop being what they are. |
a0d0e21e LW |
618 | |
619 | =item Can't coerce %s to string in %s | |
620 | ||
621 | (F) Certain types of SVs, in particular real symbol table entries | |
55497cff | 622 | (typeglobs), can't be forced to stop being what they are. |
a0d0e21e | 623 | |
0d863452 | 624 | =item Can't "continue" outside a when block |
dc57907a | 625 | |
0d863452 RH |
626 | (F) You called C<continue>, but you're not inside a C<when> |
627 | or C<default> block. | |
628 | ||
a0d0e21e LW |
629 | =item Can't create pipe mailbox |
630 | ||
be771a83 GS |
631 | (P) An error peculiar to VMS. The process is suffering from exhausted |
632 | quotas or other plumbing problems. | |
a0d0e21e | 633 | |
eb64745e | 634 | =item Can't declare class for non-scalar %s in "%s" |
a0d0e21e | 635 | |
2f7e735d | 636 | (F) Currently, only scalar variables can be declared with a specific |
30c282f6 | 637 | class qualifier in a "my", "our" or "state" declaration. The semantics may be |
2f7e735d | 638 | extended for other types of variables in future. |
eb64745e GS |
639 | |
640 | =item Can't declare %s in "%s" | |
641 | ||
30c282f6 NC |
642 | (F) Only scalar, array, and hash variables may be declared as "my", "our" or |
643 | "state" variables. They must have ordinary identifiers as names. | |
a0d0e21e | 644 | |
6df41af2 GS |
645 | =item Can't do inplace edit: %s is not a regular file |
646 | ||
be771a83 GS |
647 | (S inplace) You tried to use the B<-i> switch on a special file, such as |
648 | a file in /dev, or a FIFO. The file was ignored. | |
6df41af2 | 649 | |
a0d0e21e LW |
650 | =item Can't do inplace edit on %s: %s |
651 | ||
be771a83 GS |
652 | (S inplace) The creation of the new file failed for the indicated |
653 | reason. | |
a0d0e21e | 654 | |
54310121 | 655 | =item Can't do inplace edit without backup |
a0d0e21e | 656 | |
be771a83 GS |
657 | (F) You're on a system such as MS-DOS that gets confused if you try |
658 | reading from a deleted (but still opened) file. You have to say | |
659 | C<-i.bak>, or some such. | |
a0d0e21e | 660 | |
10f9c03d | 661 | =item Can't do inplace edit: %s would not be unique |
a0d0e21e | 662 | |
e476b1b5 | 663 | (S inplace) Your filesystem does not support filenames longer than 14 |
10f9c03d CK |
664 | characters and Perl was unable to create a unique filename during |
665 | inplace editing with the B<-i> switch. The file was ignored. | |
a0d0e21e | 666 | |
7253e4e3 | 667 | =item Can't do {n,m} with n > m in regex; marked by <-- HERE in m/%s/ |
a0d0e21e | 668 | |
b45f050a | 669 | (F) Minima must be less than or equal to maxima. If you really want your |
7253e4e3 | 670 | regexp to match something 0 times, just put {0}. The <-- HERE shows in the |
b45f050a | 671 | regular expression about where the problem was discovered. See L<perlre>. |
a0d0e21e | 672 | |
a0d0e21e LW |
673 | =item Can't do waitpid with flags |
674 | ||
be771a83 GS |
675 | (F) This machine doesn't have either waitpid() or wait4(), so only |
676 | waitpid() without flags is emulated. | |
a0d0e21e | 677 | |
a0d0e21e LW |
678 | =item Can't emulate -%s on #! line |
679 | ||
be771a83 GS |
680 | (F) The #! line specifies a switch that doesn't make sense at this |
681 | point. For example, it'd be kind of silly to put a B<-x> on the #! | |
682 | line. | |
a0d0e21e | 683 | |
1109a392 MHM |
684 | =item Can't %s %s-endian %ss on this platform |
685 | ||
686 | (F) Your platform's byte-order is neither big-endian nor little-endian, | |
687 | or it has a very strange pointer size. Packing and unpacking big- or | |
688 | little-endian floating point values and pointers may not be possible. | |
689 | See L<perlfunc/pack>. | |
690 | ||
a0d0e21e LW |
691 | =item Can't exec "%s": %s |
692 | ||
d1be9408 | 693 | (W exec) A system(), exec(), or piped open call could not execute the |
be771a83 GS |
694 | named program for the indicated reason. Typical reasons include: the |
695 | permissions were wrong on the file, the file wasn't found in | |
696 | C<$ENV{PATH}>, the executable in question was compiled for another | |
697 | architecture, or the #! line in a script points to an interpreter that | |
698 | can't be run for similar reasons. (Or maybe your system doesn't support | |
699 | #! at all.) | |
a0d0e21e LW |
700 | |
701 | =item Can't exec %s | |
702 | ||
be771a83 GS |
703 | (F) Perl was trying to execute the indicated program for you because |
704 | that's what the #! line said. If that's not what you wanted, you may | |
705 | need to mention "perl" on the #! line somewhere. | |
a0d0e21e LW |
706 | |
707 | =item Can't execute %s | |
708 | ||
be771a83 GS |
709 | (F) You used the B<-S> switch, but the copies of the script to execute |
710 | found in the PATH did not have correct permissions. | |
2a92aaa0 | 711 | |
6df41af2 | 712 | =item Can't find an opnumber for "%s" |
2a92aaa0 | 713 | |
be771a83 GS |
714 | (F) A string of a form C<CORE::word> was given to prototype(), but there |
715 | is no builtin with the name C<word>. | |
6df41af2 | 716 | |
56ca2fc0 JH |
717 | =item Can't find %s character property "%s" |
718 | ||
719 | (F) You used C<\p{}> or C<\P{}> but the character property by that name | |
89d60977 | 720 | could not be found. Maybe you misspelled the name of the property |
56ca2fc0 JH |
721 | (remember that the names of character properties consist only of |
722 | alphanumeric characters), or maybe you forgot the C<Is> or C<In> prefix? | |
723 | ||
6df41af2 GS |
724 | =item Can't find label %s |
725 | ||
be771a83 GS |
726 | (F) You said to goto a label that isn't mentioned anywhere that it's |
727 | possible for us to go to. See L<perlfunc/goto>. | |
2a92aaa0 GS |
728 | |
729 | =item Can't find %s on PATH | |
730 | ||
be771a83 GS |
731 | (F) You used the B<-S> switch, but the script to execute could not be |
732 | found in the PATH. | |
a0d0e21e | 733 | |
6df41af2 | 734 | =item Can't find %s on PATH, '.' not in PATH |
a0d0e21e | 735 | |
be771a83 GS |
736 | (F) You used the B<-S> switch, but the script to execute could not be |
737 | found in the PATH, or at least not with the correct permissions. The | |
738 | script exists in the current directory, but PATH prohibits running it. | |
a0d0e21e LW |
739 | |
740 | =item Can't find string terminator %s anywhere before EOF | |
741 | ||
be771a83 GS |
742 | (F) Perl strings can stretch over multiple lines. This message means |
743 | that the closing delimiter was omitted. Because bracketed quotes count | |
744 | nesting levels, the following is missing its final parenthesis: | |
a0d0e21e | 745 | |
fb73857a | 746 | print q(The character '(' starts a side comment.); |
747 | ||
be771a83 GS |
748 | If you're getting this error from a here-document, you may have included |
749 | unseen whitespace before or after your closing tag. A good programmer's | |
750 | editor will have a way to help you find these characters. | |
a0d0e21e | 751 | |
660a4616 TS |
752 | =item Can't find Unicode property definition "%s" |
753 | ||
754 | (F) You may have tried to use C<\p> which means a Unicode property (for | |
755 | example C<\p{Lu}> is all uppercase letters). If you did mean to use a | |
756 | Unicode property, see L<perlunicode> for the list of known properties. | |
757 | If you didn't mean to use a Unicode property, escape the C<\p>, either | |
758 | by C<\\p> (just the C<\p>) or by C<\Q\p> (the rest of the string, until | |
759 | possible C<\E>). | |
760 | ||
b3647a36 | 761 | =item Can't fork: %s |
a0d0e21e | 762 | |
be771a83 GS |
763 | (F) A fatal error occurred while trying to fork while opening a |
764 | pipeline. | |
a0d0e21e | 765 | |
b3647a36 SR |
766 | =item Can't fork, trying again in 5 seconds |
767 | ||
c973c02e | 768 | (W pipe) A fork in a piped open failed with EAGAIN and will be retried |
b3647a36 SR |
769 | after five seconds. |
770 | ||
748a9306 LW |
771 | =item Can't get filespec - stale stat buffer? |
772 | ||
be771a83 GS |
773 | (S) A warning peculiar to VMS. This arises because of the difference |
774 | between access checks under VMS and under the Unix model Perl assumes. | |
775 | Under VMS, access checks are done by filename, rather than by bits in | |
776 | the stat buffer, so that ACLs and other protections can be taken into | |
777 | account. Unfortunately, Perl assumes that the stat buffer contains all | |
778 | the necessary information, and passes it, instead of the filespec, to | |
779 | the access checking routine. It will try to retrieve the filespec using | |
780 | the device name and FID present in the stat buffer, but this works only | |
781 | if you haven't made a subsequent call to the CRTL stat() routine, | |
782 | because the device name is overwritten with each call. If this warning | |
783 | appears, the name lookup failed, and the access checking routine gave up | |
784 | and returned FALSE, just to be conservative. (Note: The access checking | |
785 | routine knows about the Perl C<stat> operator and file tests, so you | |
786 | shouldn't ever see this warning in response to a Perl command; it arises | |
787 | only if some internal code takes stat buffers lightly.) | |
748a9306 | 788 | |
a0d0e21e LW |
789 | =item Can't get pipe mailbox device name |
790 | ||
be771a83 GS |
791 | (P) An error peculiar to VMS. After creating a mailbox to act as a |
792 | pipe, Perl can't retrieve its name for later use. | |
a0d0e21e LW |
793 | |
794 | =item Can't get SYSGEN parameter value for MAXBUF | |
795 | ||
748a9306 LW |
796 | (P) An error peculiar to VMS. Perl asked $GETSYI how big you want your |
797 | mailbox buffers to be, and didn't get an answer. | |
a0d0e21e | 798 | |
6df41af2 | 799 | =item Can't "goto" into the middle of a foreach loop |
a0d0e21e | 800 | |
be771a83 GS |
801 | (F) A "goto" statement was executed to jump into the middle of a foreach |
802 | loop. You can't get there from here. See L<perlfunc/goto>. | |
6df41af2 GS |
803 | |
804 | =item Can't "goto" out of a pseudo block | |
805 | ||
be771a83 GS |
806 | (F) A "goto" statement was executed to jump out of what might look like |
807 | a block, except that it isn't a proper block. This usually occurs if | |
808 | you tried to jump out of a sort() block or subroutine, which is a no-no. | |
809 | See L<perlfunc/goto>. | |
a0d0e21e | 810 | |
9850bf21 | 811 | =item Can't goto subroutine from a sort sub (or similar callback) |
cd299c6e | 812 | |
9850bf21 RH |
813 | (F) The "goto subroutine" call can't be used to jump out of the |
814 | comparison sub for a sort(), or from a similar callback (such | |
815 | as the reduce() function in List::Util). | |
816 | ||
c74ace89 | 817 | =item Can't goto subroutine from an eval-%s |
b150fb22 | 818 | |
be771a83 | 819 | (F) The "goto subroutine" call can't be used to jump out of an eval |
c74ace89 | 820 | "string" or block. |
b150fb22 | 821 | |
6df41af2 GS |
822 | =item Can't goto subroutine outside a subroutine |
823 | ||
be771a83 GS |
824 | (F) The deeply magical "goto subroutine" call can only replace one |
825 | subroutine call for another. It can't manufacture one out of whole | |
826 | cloth. In general you should be calling it out of only an AUTOLOAD | |
827 | routine anyway. See L<perlfunc/goto>. | |
6df41af2 | 828 | |
0b5b802d GS |
829 | =item Can't ignore signal CHLD, forcing to default |
830 | ||
be771a83 GS |
831 | (W signal) Perl has detected that it is being run with the SIGCHLD |
832 | signal (sometimes known as SIGCLD) disabled. Since disabling this | |
833 | signal will interfere with proper determination of exit status of child | |
834 | processes, Perl has reset the signal to its default value. This | |
835 | situation typically indicates that the parent program under which Perl | |
836 | may be running (e.g. cron) is being very careless. | |
0b5b802d | 837 | |
e2c0f81f DG |
838 | =item Can't kill a non-numeric process ID |
839 | ||
840 | (F) Process identifiers must be (signed) integers. It is a fatal error to | |
841 | attempt to kill() an undefined, empty-string or otherwise non-numeric | |
842 | process identifier. | |
843 | ||
6df41af2 | 844 | =item Can't "last" outside a loop block |
4633a7c4 | 845 | |
6df41af2 | 846 | (F) A "last" statement was executed to break out of the current block, |
be771a83 GS |
847 | except that there's this itty bitty problem called there isn't a current |
848 | block. Note that an "if" or "else" block doesn't count as a "loopish" | |
849 | block, as doesn't a block given to sort(), map() or grep(). You can | |
850 | usually double the curlies to get the same effect though, because the | |
851 | inner curlies will be considered a block that loops once. See | |
852 | L<perlfunc/last>. | |
4633a7c4 | 853 | |
2c7d6b9c RGS |
854 | =item Can't linearize anonymous symbol table |
855 | ||
856 | (F) Perl tried to calculate the method resolution order (MRO) of a | |
857 | package, but failed because the package stash has no name. | |
858 | ||
b8170e59 JB |
859 | =item Can't load '%s' for module %s |
860 | ||
861 | (F) The module you tried to load failed to load a dynamic extension. This | |
862 | may either mean that you upgraded your version of perl to one that is | |
863 | incompatible with your old dynamic extensions (which is known to happen | |
864 | between major versions of perl), or (more likely) that your dynamic | |
16d98ec5 | 865 | extension was built against an older version of the library that is |
b8170e59 JB |
866 | installed on your system. You may need to rebuild your old dynamic |
867 | extensions. | |
868 | ||
748a9306 LW |
869 | =item Can't localize lexical variable %s |
870 | ||
2ba9eb46 | 871 | (F) You used local on a variable name that was previously declared as a |
30c282f6 | 872 | lexical variable using "my" or "state". This is not allowed. If you want to |
748a9306 LW |
873 | localize a package variable of the same name, qualify it with the |
874 | package name. | |
875 | ||
6df41af2 | 876 | =item Can't localize through a reference |
4727527e | 877 | |
6df41af2 GS |
878 | (F) You said something like C<local $$ref>, which Perl can't currently |
879 | handle, because when it goes to restore the old value of whatever $ref | |
be771a83 | 880 | pointed to after the scope of the local() is finished, it can't be sure |
64977eb6 | 881 | that $ref will still be a reference. |
4727527e | 882 | |
ea071790 | 883 | =item Can't locate %s |
ec889f3a GS |
884 | |
885 | (F) You said to C<do> (or C<require>, or C<use>) a file that couldn't be | |
886 | found. Perl looks for the file in all the locations mentioned in @INC, | |
be771a83 GS |
887 | unless the file name included the full path to the file. Perhaps you |
888 | need to set the PERL5LIB or PERL5OPT environment variable to say where | |
889 | the extra library is, or maybe the script needs to add the library name | |
890 | to @INC. Or maybe you just misspelled the name of the file. See | |
891 | L<perlfunc/require> and L<lib>. | |
a0d0e21e | 892 | |
6df41af2 GS |
893 | =item Can't locate auto/%s.al in @INC |
894 | ||
be771a83 GS |
895 | (F) A function (or method) was called in a package which allows |
896 | autoload, but there is no function to autoload. Most probable causes | |
897 | are a misprint in a function/method name or a failure to C<AutoSplit> | |
898 | the file, say, by doing C<make install>. | |
6df41af2 | 899 | |
b8170e59 JB |
900 | =item Can't locate loadable object for module %s in @INC |
901 | ||
902 | (F) The module you loaded is trying to load an external library, like | |
903 | for example, C<foo.so> or C<bar.dll>, but the L<DynaLoader> module was | |
904 | unable to locate this library. See L<DynaLoader>. | |
905 | ||
a0d0e21e LW |
906 | =item Can't locate object method "%s" via package "%s" |
907 | ||
908 | (F) You called a method correctly, and it correctly indicated a package | |
909 | functioning as a class, but that package doesn't define that particular | |
2ba9eb46 | 910 | method, nor does any of its base classes. See L<perlobj>. |
a0d0e21e LW |
911 | |
912 | =item Can't locate package %s for @%s::ISA | |
913 | ||
be771a83 GS |
914 | (W syntax) The @ISA array contained the name of another package that |
915 | doesn't seem to exist. | |
a0d0e21e | 916 | |
2f7da168 RK |
917 | =item Can't locate PerlIO%s |
918 | ||
919 | (F) You tried to use in open() a PerlIO layer that does not exist, | |
920 | e.g. open(FH, ">:nosuchlayer", "somefile"). | |
921 | ||
3e3baf6d TB |
922 | =item Can't make list assignment to \%ENV on this system |
923 | ||
be771a83 GS |
924 | (F) List assignment to %ENV is not supported on some systems, notably |
925 | VMS. | |
3e3baf6d | 926 | |
a0d0e21e LW |
927 | =item Can't modify %s in %s |
928 | ||
be771a83 GS |
929 | (F) You aren't allowed to assign to the item indicated, or otherwise try |
930 | to change it, such as with an auto-increment. | |
a0d0e21e | 931 | |
54310121 | 932 | =item Can't modify nonexistent substring |
a0d0e21e LW |
933 | |
934 | (P) The internal routine that does assignment to a substr() was handed | |
935 | a NULL. | |
936 | ||
6df41af2 GS |
937 | =item Can't modify non-lvalue subroutine call |
938 | ||
939 | (F) Subroutines meant to be used in lvalue context should be declared as | |
940 | such, see L<perlsub/"Lvalue subroutines">. | |
941 | ||
5f05dabc | 942 | =item Can't msgrcv to read-only var |
a0d0e21e | 943 | |
5f05dabc | 944 | (F) The target of a msgrcv must be modifiable to be used as a receive |
a0d0e21e LW |
945 | buffer. |
946 | ||
6df41af2 GS |
947 | =item Can't "next" outside a loop block |
948 | ||
949 | (F) A "next" statement was executed to reiterate the current block, but | |
950 | there isn't a current block. Note that an "if" or "else" block doesn't | |
be771a83 GS |
951 | count as a "loopish" block, as doesn't a block given to sort(), map() or |
952 | grep(). You can usually double the curlies to get the same effect | |
953 | though, because the inner curlies will be considered a block that loops | |
954 | once. See L<perlfunc/next>. | |
6df41af2 | 955 | |
a0d0e21e LW |
956 | =item Can't open %s: %s |
957 | ||
c47ff5f1 | 958 | (S inplace) The implicit opening of a file through use of the C<< <> >> |
08e9d68e DD |
959 | filehandle, either implicitly under the C<-n> or C<-p> command-line |
960 | switches, or explicitly, failed for the indicated reason. Usually this | |
be771a83 GS |
961 | is because you don't have read permission for a file which you named on |
962 | the command line. | |
a0d0e21e | 963 | |
9a869a14 RGS |
964 | =item Can't open a reference |
965 | ||
966 | (W io) You tried to open a scalar reference for reading or writing, | |
967 | using the 3-arg open() syntax : | |
968 | ||
969 | open FH, '>', $ref; | |
970 | ||
971 | but your version of perl is compiled without perlio, and this form of | |
972 | open is not supported. | |
973 | ||
a0d0e21e LW |
974 | =item Can't open bidirectional pipe |
975 | ||
be771a83 GS |
976 | (W pipe) You tried to say C<open(CMD, "|cmd|")>, which is not supported. |
977 | You can try any of several modules in the Perl library to do this, such | |
978 | as IPC::Open2. Alternately, direct the pipe's output to a file using | |
979 | ">", and then read it in under a different file handle. | |
a0d0e21e | 980 | |
748a9306 LW |
981 | =item Can't open error file %s as stderr |
982 | ||
be771a83 GS |
983 | (F) An error peculiar to VMS. Perl does its own command line |
984 | redirection, and couldn't open the file specified after '2>' or '2>>' on | |
985 | the command line for writing. | |
748a9306 LW |
986 | |
987 | =item Can't open input file %s as stdin | |
988 | ||
be771a83 GS |
989 | (F) An error peculiar to VMS. Perl does its own command line |
990 | redirection, and couldn't open the file specified after '<' on the | |
991 | command line for reading. | |
748a9306 LW |
992 | |
993 | =item Can't open output file %s as stdout | |
994 | ||
be771a83 GS |
995 | (F) An error peculiar to VMS. Perl does its own command line |
996 | redirection, and couldn't open the file specified after '>' or '>>' on | |
997 | the command line for writing. | |
748a9306 LW |
998 | |
999 | =item Can't open output pipe (name: %s) | |
1000 | ||
be771a83 GS |
1001 | (P) An error peculiar to VMS. Perl does its own command line |
1002 | redirection, and couldn't open the pipe into which to send data destined | |
1003 | for stdout. | |
748a9306 | 1004 | |
2b8ca739 | 1005 | =item Can't open perl script%s |
a0d0e21e LW |
1006 | |
1007 | (F) The script you specified can't be opened for the indicated reason. | |
1008 | ||
fa3aa65a JC |
1009 | If you're debugging a script that uses #!, and normally relies on the |
1010 | shell's $PATH search, the -S option causes perl to do that search, so | |
1011 | you don't have to type the path or C<`which $scriptname`>. | |
1012 | ||
6df41af2 GS |
1013 | =item Can't read CRTL environ |
1014 | ||
1015 | (S) A warning peculiar to VMS. Perl tried to read an element of %ENV | |
1016 | from the CRTL's internal environment array and discovered the array was | |
1017 | missing. You need to figure out where your CRTL misplaced its environ | |
be771a83 GS |
1018 | or define F<PERL_ENV_TABLES> (see L<perlvms>) so that environ is not |
1019 | searched. | |
6df41af2 | 1020 | |
6df41af2 GS |
1021 | =item Can't "redo" outside a loop block |
1022 | ||
1023 | (F) A "redo" statement was executed to restart the current block, but | |
1024 | there isn't a current block. Note that an "if" or "else" block doesn't | |
1025 | count as a "loopish" block, as doesn't a block given to sort(), map() | |
1026 | or grep(). You can usually double the curlies to get the same effect | |
1027 | though, because the inner curlies will be considered a block that | |
1028 | loops once. See L<perlfunc/redo>. | |
1029 | ||
64977eb6 | 1030 | =item Can't remove %s: %s, skipping file |
10f9c03d | 1031 | |
be771a83 GS |
1032 | (S inplace) You requested an inplace edit without creating a backup |
1033 | file. Perl was unable to remove the original file to replace it with | |
1034 | the modified file. The file was left unmodified. | |
10f9c03d | 1035 | |
a0d0e21e LW |
1036 | =item Can't rename %s to %s: %s, skipping file |
1037 | ||
e476b1b5 | 1038 | (S inplace) The rename done by the B<-i> switch failed for some reason, |
10f9c03d | 1039 | probably because you don't have write permission to the directory. |
a0d0e21e | 1040 | |
748a9306 LW |
1041 | =item Can't reopen input pipe (name: %s) in binary mode |
1042 | ||
be771a83 GS |
1043 | (P) An error peculiar to VMS. Perl thought stdin was a pipe, and tried |
1044 | to reopen it to accept binary data. Alas, it failed. | |
748a9306 | 1045 | |
fe13d51d | 1046 | =item Can't resolve method "%s" overloading "%s" in package "%s" |
6df41af2 | 1047 | |
be771a83 GS |
1048 | (F|P) Error resolving overloading specified by a method name (as opposed |
1049 | to a subroutine reference): no such method callable via the package. If | |
1050 | method name is C<???>, this is an internal error. | |
6df41af2 | 1051 | |
cd06dffe GS |
1052 | =item Can't return %s from lvalue subroutine |
1053 | ||
be771a83 GS |
1054 | (F) Perl detected an attempt to return illegal lvalues (such as |
1055 | temporary or readonly values) from a subroutine used as an lvalue. This | |
1056 | is not allowed. | |
cd06dffe | 1057 | |
96ebfdd7 RK |
1058 | =item Can't return outside a subroutine |
1059 | ||
1060 | (F) The return statement was executed in mainline code, that is, where | |
1061 | there was no subroutine call to return out of. See L<perlsub>. | |
1062 | ||
78f9721b SM |
1063 | =item Can't return %s to lvalue scalar context |
1064 | ||
1065 | (F) You tried to return a complete array or hash from an lvalue subroutine, | |
1066 | but you called the subroutine in a way that made Perl think you meant | |
1067 | to return only one value. You probably meant to write parentheses around | |
1068 | the call to the subroutine, which tell Perl that the call should be in | |
1069 | list context. | |
1070 | ||
a0d0e21e LW |
1071 | =item Can't stat script "%s" |
1072 | ||
be771a83 GS |
1073 | (P) For some reason you can't fstat() the script even though you have it |
1074 | open already. Bizarre. | |
a0d0e21e | 1075 | |
a0d0e21e LW |
1076 | =item Can't take log of %g |
1077 | ||
fb73857a | 1078 | (F) For ordinary real numbers, you can't take the logarithm of a |
1079 | negative number or zero. There's a Math::Complex package that comes | |
be771a83 GS |
1080 | standard with Perl, though, if you really want to do that for the |
1081 | negative numbers. | |
a0d0e21e LW |
1082 | |
1083 | =item Can't take sqrt of %g | |
1084 | ||
1085 | (F) For ordinary real numbers, you can't take the square root of a | |
fb73857a | 1086 | negative number. There's a Math::Complex package that comes standard |
1087 | with Perl, though, if you really want to do that. | |
a0d0e21e LW |
1088 | |
1089 | =item Can't undef active subroutine | |
1090 | ||
1091 | (F) You can't undefine a routine that's currently running. You can, | |
1092 | however, redefine it while it's running, and you can even undef the | |
1093 | redefined subroutine while the old routine is running. Go figure. | |
1094 | ||
1095 | =item Can't unshift | |
1096 | ||
1097 | (F) You tried to unshift an "unreal" array that can't be unshifted, such | |
1098 | as the main Perl stack. | |
1099 | ||
c81225bc | 1100 | =item Can't upgrade %s (%d) to %d |
a0d0e21e | 1101 | |
be771a83 GS |
1102 | (P) The internal sv_upgrade routine adds "members" to an SV, making it |
1103 | into a more specialized kind of SV. The top several SV types are so | |
1104 | specialized, however, that they cannot be interconverted. This message | |
1105 | indicates that such a conversion was attempted. | |
a0d0e21e | 1106 | |
1db89ea5 BS |
1107 | =item Can't use anonymous symbol table for method lookup |
1108 | ||
e27ad1f2 | 1109 | (F) The internal routine that does method lookup was handed a symbol |
1db89ea5 BS |
1110 | table that doesn't have a name. Symbol tables can become anonymous |
1111 | for example by undefining stashes: C<undef %Some::Package::>. | |
1112 | ||
96ebfdd7 RK |
1113 | =item Can't use an undefined value as %s reference |
1114 | ||
1115 | (F) A value used as either a hard reference or a symbolic reference must | |
1116 | be a defined value. This helps to delurk some insidious errors. | |
1117 | ||
6df41af2 GS |
1118 | =item Can't use bareword ("%s") as %s ref while "strict refs" in use |
1119 | ||
be771a83 GS |
1120 | (F) Only hard references are allowed by "strict refs". Symbolic |
1121 | references are disallowed. See L<perlref>. | |
6df41af2 | 1122 | |
90b75b61 | 1123 | =item Can't use %! because Errno.pm is not available |
1d2dff63 GS |
1124 | |
1125 | (F) The first time the %! hash is used, perl automatically loads the | |
1126 | Errno.pm module. The Errno module is expected to tie the %! hash to | |
1127 | provide symbolic names for C<$!> errno values. | |
1128 | ||
1109a392 MHM |
1129 | =item Can't use both '<' and '>' after type '%c' in %s |
1130 | ||
1131 | (F) A type cannot be forced to have both big-endian and little-endian | |
1132 | byte-order at the same time, so this combination of modifiers is not | |
1133 | allowed. See L<perlfunc/pack>. | |
1134 | ||
6df41af2 GS |
1135 | =item Can't use %s for loop variable |
1136 | ||
be771a83 GS |
1137 | (F) Only a simple scalar variable may be used as a loop variable on a |
1138 | foreach. | |
6df41af2 | 1139 | |
aab6a793 | 1140 | =item Can't use global %s in "%s" |
6df41af2 | 1141 | |
be771a83 GS |
1142 | (F) You tried to declare a magical variable as a lexical variable. This |
1143 | is not allowed, because the magic can be tied to only one location | |
1144 | (namely the global variable) and it would be incredibly confusing to | |
1145 | have variables in your program that looked like magical variables but | |
6df41af2 GS |
1146 | weren't. |
1147 | ||
6d3b25aa RGS |
1148 | =item Can't use '%c' in a group with different byte-order in %s |
1149 | ||
1150 | (F) You attempted to force a different byte-order on a type | |
1151 | that is already inside a group with a byte-order modifier. | |
1152 | For example you cannot force little-endianness on a type that | |
1153 | is inside a big-endian group. | |
1154 | ||
28ccebc4 RGS |
1155 | =item Can't use keyword '%s' as a label |
1156 | ||
1157 | (F) You attempted to use a reserved keyword, such as C<print> or C<BEGIN>, | |
1158 | as a statement label. This is disallowed since Perl 5.11.0. | |
1159 | ||
c07a80fd | 1160 | =item Can't use "my %s" in sort comparison |
1161 | ||
1162 | (F) The global variables $a and $b are reserved for sort comparisons. | |
c47ff5f1 | 1163 | You mentioned $a or $b in the same line as the <=> or cmp operator, |
c07a80fd | 1164 | and the variable had earlier been declared as a lexical variable. |
1165 | Either qualify the sort variable with the package name, or rename the | |
1166 | lexical variable. | |
1167 | ||
a0d0e21e LW |
1168 | =item Can't use %s ref as %s ref |
1169 | ||
1170 | (F) You've mixed up your reference types. You have to dereference a | |
1171 | reference of the type needed. You can use the ref() function to | |
1172 | test the type of the reference, if need be. | |
1173 | ||
748a9306 | 1174 | =item Can't use string ("%s") as %s ref while "strict refs" in use |
a0d0e21e | 1175 | |
be771a83 GS |
1176 | (F) Only hard references are allowed by "strict refs". Symbolic |
1177 | references are disallowed. See L<perlref>. | |
a0d0e21e | 1178 | |
748a9306 LW |
1179 | =item Can't use subscript on %s |
1180 | ||
1181 | (F) The compiler tried to interpret a bracketed expression as a | |
1182 | subscript. But to the left of the brackets was an expression that | |
209e7cf1 | 1183 | didn't look like a hash or array reference, or anything else subscriptable. |
748a9306 | 1184 | |
6df41af2 GS |
1185 | =item Can't use \%c to mean $%c in expression |
1186 | ||
75b44862 GS |
1187 | (W syntax) In an ordinary expression, backslash is a unary operator that |
1188 | creates a reference to its argument. The use of backslash to indicate a | |
1189 | backreference to a matched substring is valid only as part of a regular | |
be771a83 GS |
1190 | expression pattern. Trying to do this in ordinary Perl code produces a |
1191 | value that prints out looking like SCALAR(0xdecaf). Use the $1 form | |
1192 | instead. | |
6df41af2 | 1193 | |
0d863452 | 1194 | =item Can't use "when" outside a topicalizer |
dc57907a | 1195 | |
0d863452 RH |
1196 | (F) You have used a when() block that is neither inside a C<foreach> |
1197 | loop nor a C<given> block. (Note that this error is issued on exit | |
1198 | from the C<when> block, so you won't get the error if the match fails, | |
1199 | or if you use an explicit C<continue>.) | |
1200 | ||
810b8aa5 GS |
1201 | =item Can't weaken a nonreference |
1202 | ||
1203 | (F) You attempted to weaken something that was not a reference. Only | |
1204 | references can be weakened. | |
1205 | ||
5f05dabc | 1206 | =item Can't x= to read-only value |
a0d0e21e | 1207 | |
be771a83 GS |
1208 | (F) You tried to repeat a constant value (often the undefined value) |
1209 | with an assignment operator, which implies modifying the value itself. | |
a0d0e21e LW |
1210 | Perhaps you need to copy the value to a temporary, and repeat that. |
1211 | ||
f337b084 | 1212 | =item Character in 'C' format wrapped in pack |
ac7cd81a SC |
1213 | |
1214 | (W pack) You said | |
1215 | ||
1216 | pack("C", $x) | |
1217 | ||
1218 | where $x is either less than 0 or more than 255; the C<"C"> format is | |
1219 | only for encoding native operating system characters (ASCII, EBCDIC, | |
1220 | and so on) and not for Unicode characters, so Perl behaved as if you meant | |
1221 | ||
1222 | pack("C", $x & 255) | |
1223 | ||
1224 | If you actually want to pack Unicode codepoints, use the C<"U"> format | |
1225 | instead. | |
1226 | ||
f337b084 TH |
1227 | =item Character in 'W' format wrapped in pack |
1228 | ||
1229 | (W pack) You said | |
1230 | ||
1231 | pack("U0W", $x) | |
1232 | ||
1233 | where $x is either less than 0 or more than 255. However, C<U0>-mode expects | |
1234 | all values to fall in the interval [0, 255], so Perl behaved as if you | |
1235 | meant: | |
1236 | ||
1237 | pack("U0W", $x & 255) | |
1238 | ||
1239 | =item Character in 'c' format wrapped in pack | |
ac7cd81a SC |
1240 | |
1241 | (W pack) You said | |
1242 | ||
1243 | pack("c", $x) | |
1244 | ||
1245 | where $x is either less than -128 or more than 127; the C<"c"> format | |
1246 | is only for encoding native operating system characters (ASCII, EBCDIC, | |
1247 | and so on) and not for Unicode characters, so Perl behaved as if you meant | |
1248 | ||
1249 | pack("c", $x & 255); | |
1250 | ||
1251 | If you actually want to pack Unicode codepoints, use the C<"U"> format | |
1252 | instead. | |
1253 | ||
f337b084 TH |
1254 | =item Character in '%c' format wrapped in unpack |
1255 | ||
1256 | (W unpack) You tried something like | |
1257 | ||
1258 | unpack("H", "\x{2a1}") | |
1259 | ||
1a147d38 | 1260 | where the format expects to process a byte (a character with a value |
f337b084 TH |
1261 | below 256), but a higher value was provided instead. Perl uses the value |
1262 | modulus 256 instead, as if you had provided: | |
1263 | ||
1264 | unpack("H", "\x{a1}") | |
1265 | ||
1266 | =item Character(s) in '%c' format wrapped in pack | |
1267 | ||
1268 | (W pack) You tried something like | |
1269 | ||
1270 | pack("u", "\x{1f3}b") | |
1271 | ||
1a147d38 YO |
1272 | where the format expects to process a sequence of bytes (character with a |
1273 | value below 256), but some of the characters had a higher value. Perl | |
f337b084 TH |
1274 | uses the character values modulus 256 instead, as if you had provided: |
1275 | ||
1276 | pack("u", "\x{f3}b") | |
1277 | ||
1278 | =item Character(s) in '%c' format wrapped in unpack | |
1279 | ||
1280 | (W unpack) You tried something like | |
1281 | ||
1282 | unpack("s", "\x{1f3}b") | |
1283 | ||
1a147d38 YO |
1284 | where the format expects to process a sequence of bytes (character with a |
1285 | value below 256), but some of the characters had a higher value. Perl | |
f337b084 TH |
1286 | uses the character values modulus 256 instead, as if you had provided: |
1287 | ||
1288 | unpack("s", "\x{f3}b") | |
1289 | ||
96ebfdd7 RK |
1290 | =item close() on unopened filehandle %s |
1291 | ||
1292 | (W unopened) You tried to close a filehandle that was never opened. | |
1293 | ||
abc7ecad SP |
1294 | =item closedir() attempted on invalid dirhandle %s |
1295 | ||
1296 | (W io) The dirhandle you tried to close is either closed or not really | |
1297 | a dirhandle. Check your control flow. | |
1298 | ||
49704364 WL |
1299 | =item Code missing after '/' |
1300 | ||
1301 | (F) You had a (sub-)template that ends with a '/'. There must be another | |
1302 | template code following the slash. See L<perlfunc/pack>. | |
1303 | ||
6df41af2 GS |
1304 | =item %s: Command not found |
1305 | ||
be771a83 GS |
1306 | (A) You've accidentally run your script through B<csh> instead of Perl. |
1307 | Check the #! line, or manually feed your script into Perl yourself. | |
6df41af2 | 1308 | |
7a2e2cd6 | 1309 | =item Compilation failed in require |
1310 | ||
1311 | (F) Perl could not compile a file specified in a C<require> statement. | |
be771a83 GS |
1312 | Perl uses this generic message when none of the errors that it |
1313 | encountered were severe enough to halt compilation immediately. | |
7a2e2cd6 | 1314 | |
c3464db5 DD |
1315 | =item Complex regular subexpression recursion limit (%d) exceeded |
1316 | ||
be771a83 GS |
1317 | (W regexp) The regular expression engine uses recursion in complex |
1318 | situations where back-tracking is required. Recursion depth is limited | |
1319 | to 32766, or perhaps less in architectures where the stack cannot grow | |
1320 | arbitrarily. ("Simple" and "medium" situations are handled without | |
1321 | recursion and are not subject to a limit.) Try shortening the string | |
1322 | under examination; looping in Perl code (e.g. with C<while>) rather than | |
1323 | in the regular expression engine; or rewriting the regular expression so | |
c2e66d9e | 1324 | that it is simpler or backtracks less. (See L<perlfaq2> for information |
be771a83 | 1325 | on I<Mastering Regular Expressions>.) |
c3464db5 | 1326 | |
38875929 DM |
1327 | =item cond_broadcast() called on unlocked variable |
1328 | ||
1329 | (W threads) Within a thread-enabled program, you tried to call | |
1330 | cond_broadcast() on a variable which wasn't locked. The cond_broadcast() | |
1331 | function is used to wake up another thread that is waiting in a | |
1332 | cond_wait(). To ensure that the signal isn't sent before the other thread | |
1333 | has a chance to enter the wait, it is usual for the signaling thread to | |
1334 | first wait for a lock on variable. This lock attempt will only succeed | |
1335 | after the other thread has entered cond_wait() and thus relinquished the | |
1336 | lock. | |
1337 | ||
38875929 DM |
1338 | =item cond_signal() called on unlocked variable |
1339 | ||
1340 | (W threads) Within a thread-enabled program, you tried to call | |
1341 | cond_signal() on a variable which wasn't locked. The cond_signal() | |
1342 | function is used to wake up another thread that is waiting in a | |
1343 | cond_wait(). To ensure that the signal isn't sent before the other thread | |
1344 | has a chance to enter the wait, it is usual for the signaling thread to | |
1345 | first wait for a lock on variable. This lock attempt will only succeed | |
1346 | after the other thread has entered cond_wait() and thus relinquished the | |
1347 | lock. | |
1348 | ||
69282e91 | 1349 | =item connect() on closed socket %s |
a0d0e21e | 1350 | |
be771a83 GS |
1351 | (W closed) You tried to do a connect on a closed socket. Did you forget |
1352 | to check the return value of your socket() call? See | |
1353 | L<perlfunc/connect>. | |
a0d0e21e | 1354 | |
41ab332f | 1355 | =item Constant(%s)%s: %s |
6df41af2 | 1356 | |
be771a83 GS |
1357 | (F) The parser found inconsistencies either while attempting to define |
1358 | an overloaded constant, or when trying to find the character name | |
1359 | specified in the C<\N{...}> escape. Perhaps you forgot to load the | |
1360 | corresponding C<overload> or C<charnames> pragma? See L<charnames> and | |
1361 | L<overload>. | |
6df41af2 | 1362 | |
fc8cd66c YO |
1363 | =item Constant(%s)%s: %s in regex; marked by <-- HERE in m/%s/ |
1364 | ||
1a147d38 YO |
1365 | (F) The parser found inconsistencies while attempting to find |
1366 | the character name specified in the C<\N{...}> escape. Perhaps you | |
1367 | forgot to load the corresponding C<charnames> pragma? | |
fc8cd66c YO |
1368 | See L<charnames>. |
1369 | ||
1370 | ||
779c5bc9 GS |
1371 | =item Constant is not %s reference |
1372 | ||
1373 | (F) A constant value (perhaps declared using the C<use constant> pragma) | |
be771a83 GS |
1374 | is being dereferenced, but it amounts to the wrong type of reference. |
1375 | The message indicates the type of reference that was expected. This | |
1376 | usually indicates a syntax error in dereferencing the constant value. | |
779c5bc9 GS |
1377 | See L<perlsub/"Constant Functions"> and L<constant>. |
1378 | ||
4cee8e80 CS |
1379 | =item Constant subroutine %s redefined |
1380 | ||
bb028877 | 1381 | (S) You redefined a subroutine which had previously been |
be771a83 GS |
1382 | eligible for inlining. See L<perlsub/"Constant Functions"> for |
1383 | commentary and workarounds. | |
4cee8e80 | 1384 | |
9607fc9c | 1385 | =item Constant subroutine %s undefined |
1386 | ||
be771a83 GS |
1387 | (W misc) You undefined a subroutine which had previously been eligible |
1388 | for inlining. See L<perlsub/"Constant Functions"> for commentary and | |
1389 | workarounds. | |
9607fc9c | 1390 | |
e7ea3e70 IZ |
1391 | =item Copy method did not return a reference |
1392 | ||
64977eb6 | 1393 | (F) The method which overloads "=" is buggy. See |
13a2d996 | 1394 | L<overload/Copy Constructor>. |
e7ea3e70 | 1395 | |
6798c92b GS |
1396 | =item CORE::%s is not a keyword |
1397 | ||
1398 | (F) The CORE:: namespace is reserved for Perl keywords. | |
1399 | ||
a0d0e21e LW |
1400 | =item corrupted regexp pointers |
1401 | ||
1402 | (P) The regular expression engine got confused by what the regular | |
1403 | expression compiler gave it. | |
1404 | ||
1405 | =item corrupted regexp program | |
1406 | ||
be771a83 GS |
1407 | (P) The regular expression engine got passed a regexp program without a |
1408 | valid magic number. | |
a0d0e21e | 1409 | |
6df41af2 GS |
1410 | =item Corrupt malloc ptr 0x%lx at 0x%lx |
1411 | ||
1412 | (P) The malloc package that comes with Perl had an internal failure. | |
1413 | ||
49704364 WL |
1414 | =item Count after length/code in unpack |
1415 | ||
1416 | (F) You had an unpack template indicating a counted-length string, but | |
1417 | you have also specified an explicit size for the string. See | |
1418 | L<perlfunc/pack>. | |
1419 | ||
a0d0e21e LW |
1420 | =item Deep recursion on subroutine "%s" |
1421 | ||
be771a83 GS |
1422 | (W recursion) This subroutine has called itself (directly or indirectly) |
1423 | 100 times more than it has returned. This probably indicates an | |
1424 | infinite recursion, unless you're writing strange benchmark programs, in | |
1425 | which case it indicates something else. | |
a0d0e21e | 1426 | |
aad1d01f NC |
1427 | This threshold can be changed from 100, by recompiling the F<perl> binary, |
1428 | setting the C pre-processor macro C<PERL_SUB_DEPTH_WARN> to the desired value. | |
1429 | ||
f10b0346 | 1430 | =item defined(@array) is deprecated |
69794302 | 1431 | |
be771a83 GS |
1432 | (D deprecated) defined() is not usually useful on arrays because it |
1433 | checks for an undefined I<scalar> value. If you want to see if the | |
64977eb6 | 1434 | array is empty, just use C<if (@array) { # not empty }> for example. |
69794302 | 1435 | |
f10b0346 | 1436 | =item defined(%hash) is deprecated |
69794302 | 1437 | |
be771a83 GS |
1438 | (D deprecated) defined() is not usually useful on hashes because it |
1439 | checks for an undefined I<scalar> value. If you want to see if the hash | |
64977eb6 | 1440 | is empty, just use C<if (%hash) { # not empty }> for example. |
69794302 | 1441 | |
62658f4d PM |
1442 | =item %s defines neither package nor VERSION--version check failed |
1443 | ||
1444 | (F) You said something like "use Module 42" but in the Module file | |
1445 | there are neither package declarations nor a C<$VERSION>. | |
1446 | ||
fc36a67e | 1447 | =item Delimiter for here document is too long |
1448 | ||
be771a83 GS |
1449 | (F) In a here document construct like C<<<FOO>, the label C<FOO> is too |
1450 | long for Perl to handle. You have to be seriously twisted to write code | |
1451 | that triggers this error. | |
fc36a67e | 1452 | |
6d3b25aa RGS |
1453 | =item Deprecated use of my() in false conditional |
1454 | ||
1455 | (D deprecated) You used a declaration similar to C<my $x if 0>. | |
1456 | There has been a long-standing bug in Perl that causes a lexical variable | |
1457 | not to be cleared at scope exit when its declaration includes a false | |
1458 | conditional. Some people have exploited this bug to achieve a kind of | |
1459 | static variable. Since we intend to fix this bug, we don't want people | |
1460 | relying on this behavior. You can achieve a similar static effect by | |
1461 | declaring the variable in a separate block outside the function, eg | |
36fb85f3 | 1462 | |
6d3b25aa RGS |
1463 | sub f { my $x if 0; return $x++ } |
1464 | ||
1465 | becomes | |
1466 | ||
1467 | { my $x; sub f { return $x++ } } | |
1468 | ||
36fb85f3 RGS |
1469 | Beginning with perl 5.9.4, you can also use C<state> variables to |
1470 | have lexicals that are initialized only once (see L<feature>): | |
1471 | ||
1472 | sub f { state $x; return $x++ } | |
1473 | ||
500ab966 RGS |
1474 | =item DESTROY created new reference to dead object '%s' |
1475 | ||
1476 | (F) A DESTROY() method created a new reference to the object which is | |
1477 | just being DESTROYed. Perl is confused, and prefers to abort rather than | |
1478 | to create a dangling reference. | |
1479 | ||
3cdd684c TP |
1480 | =item Did not produce a valid header |
1481 | ||
1482 | See Server error. | |
1483 | ||
6df41af2 GS |
1484 | =item %s did not return a true value |
1485 | ||
1486 | (F) A required (or used) file must return a true value to indicate that | |
1487 | it compiled correctly and ran its initialization code correctly. It's | |
1488 | traditional to end such a file with a "1;", though any true value would | |
1489 | do. See L<perlfunc/require>. | |
1490 | ||
cc507455 | 1491 | =item (Did you mean &%s instead?) |
4633a7c4 | 1492 | |
be771a83 GS |
1493 | (W) You probably referred to an imported subroutine &FOO as $FOO or some |
1494 | such. | |
4633a7c4 | 1495 | |
cc507455 | 1496 | =item (Did you mean "local" instead of "our"?) |
33633739 | 1497 | |
be771a83 GS |
1498 | (W misc) Remember that "our" does not localize the declared global |
1499 | variable. You have declared it again in the same lexical scope, which | |
1500 | seems superfluous. | |
33633739 | 1501 | |
cc507455 | 1502 | =item (Did you mean $ or @ instead of %?) |
a0d0e21e | 1503 | |
be771a83 GS |
1504 | (W) You probably said %hash{$key} when you meant $hash{$key} or |
1505 | @hash{@keys}. On the other hand, maybe you just meant %hash and got | |
1506 | carried away. | |
748a9306 | 1507 | |
7e1af8bc | 1508 | =item Died |
5f05dabc | 1509 | |
1510 | (F) You passed die() an empty string (the equivalent of C<die "">) or | |
1511 | you called it with no args and both C<$@> and C<$_> were empty. | |
1512 | ||
3cdd684c TP |
1513 | =item Document contains no data |
1514 | ||
1515 | See Server error. | |
1516 | ||
62658f4d PM |
1517 | =item %s does not define %s::VERSION--version check failed |
1518 | ||
1519 | (F) You said something like "use Module 42" but the Module did not | |
1520 | define a C<$VERSION.> | |
1521 | ||
49704364 WL |
1522 | =item '/' does not take a repeat count |
1523 | ||
1524 | (F) You cannot put a repeat count of any kind right after the '/' code. | |
1525 | See L<perlfunc/pack>. | |
1526 | ||
a0d0e21e LW |
1527 | =item Don't know how to handle magic of type '%s' |
1528 | ||
1529 | (P) The internal handling of magical variables has been cursed. | |
1530 | ||
1531 | =item do_study: out of memory | |
1532 | ||
1533 | (P) This should have been caught by safemalloc() instead. | |
1534 | ||
6df41af2 GS |
1535 | =item (Do you need to predeclare %s?) |
1536 | ||
56da5a46 RGS |
1537 | (S syntax) This is an educated guess made in conjunction with the message |
1538 | "%s found where operator expected". It often means a subroutine or module | |
6df41af2 GS |
1539 | name is being referenced that hasn't been declared yet. This may be |
1540 | because of ordering problems in your file, or because of a missing | |
be771a83 GS |
1541 | "sub", "package", "require", or "use" statement. If you're referencing |
1542 | something that isn't defined yet, you don't actually have to define the | |
1543 | subroutine or package before the current location. You can use an empty | |
1544 | "sub foo;" or "package FOO;" to enter a "forward" declaration. | |
6df41af2 | 1545 | |
ac206dc8 RGS |
1546 | =item dump() better written as CORE::dump() |
1547 | ||
1548 | (W misc) You used the obsolescent C<dump()> built-in function, without fully | |
1549 | qualifying it as C<CORE::dump()>. Maybe it's a typo. See L<perlfunc/dump>. | |
1550 | ||
84d78eb7 YO |
1551 | =item dump is not supported |
1552 | ||
1553 | (F) Your machine doesn't support dump/undump. | |
1554 | ||
a0d0e21e LW |
1555 | =item Duplicate free() ignored |
1556 | ||
be771a83 GS |
1557 | (S malloc) An internal routine called free() on something that had |
1558 | already been freed. | |
a0d0e21e | 1559 | |
1109a392 MHM |
1560 | =item Duplicate modifier '%c' after '%c' in %s |
1561 | ||
1562 | (W) You have applied the same modifier more than once after a type | |
1563 | in a pack template. See L<perlfunc/pack>. | |
1564 | ||
4633a7c4 LW |
1565 | =item elseif should be elsif |
1566 | ||
56da5a46 RGS |
1567 | (S syntax) There is no keyword "elseif" in Perl because Larry thinks it's |
1568 | ugly. Your code will be interpreted as an attempt to call a method named | |
be771a83 | 1569 | "elseif" for the class returned by the following block. This is |
4633a7c4 LW |
1570 | unlikely to be what you want. |
1571 | ||
ab13f0c7 JH |
1572 | =item Empty %s |
1573 | ||
af6f566e HS |
1574 | (F) C<\p> and C<\P> are used to introduce a named Unicode property, as |
1575 | described in L<perlunicode> and L<perlre>. You used C<\p> or C<\P> in | |
1576 | a regular expression without specifying the property name. | |
ab13f0c7 | 1577 | |
85ab1d1d | 1578 | =item entering effective %s failed |
5ff3f7a4 | 1579 | |
85ab1d1d | 1580 | (F) While under the C<use filetest> pragma, switching the real and |
5ff3f7a4 GS |
1581 | effective uids or gids failed. |
1582 | ||
c038024b RGS |
1583 | =item %ENV is aliased to %s |
1584 | ||
1585 | (F) You're running under taint mode, and the C<%ENV> variable has been | |
1586 | aliased to another hash, so it doesn't reflect anymore the state of the | |
1587 | program's environment. This is potentially insecure. | |
1588 | ||
748a9306 LW |
1589 | =item Error converting file specification %s |
1590 | ||
5f05dabc | 1591 | (F) An error peculiar to VMS. Because Perl may have to deal with file |
748a9306 | 1592 | specifications in either VMS or Unix syntax, it converts them to a |
be771a83 GS |
1593 | single form when it must operate on them directly. Either you've passed |
1594 | an invalid file specification to Perl, or you've found a case the | |
1595 | conversion routines don't handle. Drat. | |
748a9306 | 1596 | |
e4d48cc9 GS |
1597 | =item %s: Eval-group in insecure regular expression |
1598 | ||
be771a83 GS |
1599 | (F) Perl detected tainted data when trying to compile a regular |
1600 | expression that contains the C<(?{ ... })> zero-width assertion, which | |
1601 | is unsafe. See L<perlre/(?{ code })>, and L<perlsec>. | |
e4d48cc9 | 1602 | |
fc8f615e | 1603 | =item %s: Eval-group not allowed at runtime, use re 'eval' |
e4d48cc9 | 1604 | |
be771a83 GS |
1605 | (F) Perl tried to compile a regular expression containing the |
1606 | C<(?{ ... })> zero-width assertion at run time, as it would when the | |
1607 | pattern contains interpolated values. Since that is a security risk, it | |
1608 | is not allowed. If you insist, you may still do this by explicitly | |
1609 | building the pattern from an interpolated string at run time and using | |
1610 | that in an eval(). See L<perlre/(?{ code })>. | |
e4d48cc9 | 1611 | |
6df41af2 GS |
1612 | =item %s: Eval-group not allowed, use re 'eval' |
1613 | ||
be771a83 GS |
1614 | (F) A regular expression contained the C<(?{ ... })> zero-width |
1615 | assertion, but that construct is only allowed when the C<use re 'eval'> | |
1616 | pragma is in effect. See L<perlre/(?{ code })>. | |
6df41af2 | 1617 | |
1a147d38 YO |
1618 | =item EVAL without pos change exceeded limit in regex; marked by <-- HERE in m/%s/ |
1619 | ||
1620 | (F) You used a pattern that nested too many EVAL calls without consuming | |
1621 | any text. Restructure the pattern so that text is consumed. | |
1622 | ||
1623 | The <-- HERE shows in the regular expression about where the problem was | |
1624 | discovered. | |
1625 | ||
fc36a67e | 1626 | =item Excessively long <> operator |
1627 | ||
1628 | (F) The contents of a <> operator may not exceed the maximum size of a | |
1629 | Perl identifier. If you're just trying to glob a long list of | |
1630 | filenames, try using the glob() operator, or put the filenames into a | |
1631 | variable and glob that. | |
1632 | ||
ed9aa3b7 SG |
1633 | =item exec? I'm not *that* kind of operating system |
1634 | ||
1635 | (F) The C<exec> function is not implemented in MacPerl. See L<perlport>. | |
1636 | ||
fe13d51d | 1637 | =item Execution of %s aborted due to compilation errors. |
a0d0e21e LW |
1638 | |
1639 | (F) The final summary message when a Perl compilation fails. | |
1640 | ||
1641 | =item Exiting eval via %s | |
1642 | ||
be771a83 GS |
1643 | (W exiting) You are exiting an eval by unconventional means, such as a |
1644 | goto, or a loop control statement. | |
e476b1b5 GS |
1645 | |
1646 | =item Exiting format via %s | |
1647 | ||
9a2ff54b | 1648 | (W exiting) You are exiting a format by unconventional means, such as a |
be771a83 | 1649 | goto, or a loop control statement. |
a0d0e21e | 1650 | |
0a753a76 | 1651 | =item Exiting pseudo-block via %s |
1652 | ||
be771a83 GS |
1653 | (W exiting) You are exiting a rather special block construct (like a |
1654 | sort block or subroutine) by unconventional means, such as a goto, or a | |
1655 | loop control statement. See L<perlfunc/sort>. | |
0a753a76 | 1656 | |
a0d0e21e LW |
1657 | =item Exiting subroutine via %s |
1658 | ||
be771a83 GS |
1659 | (W exiting) You are exiting a subroutine by unconventional means, such |
1660 | as a goto, or a loop control statement. | |
a0d0e21e LW |
1661 | |
1662 | =item Exiting substitution via %s | |
1663 | ||
be771a83 GS |
1664 | (W exiting) You are exiting a substitution by unconventional means, such |
1665 | as a return, a goto, or a loop control statement. | |
a0d0e21e | 1666 | |
7b8d334a GS |
1667 | =item Explicit blessing to '' (assuming package main) |
1668 | ||
be771a83 GS |
1669 | (W misc) You are blessing a reference to a zero length string. This has |
1670 | the effect of blessing the reference into the package main. This is | |
1671 | usually not what you want. Consider providing a default target package, | |
1672 | e.g. bless($ref, $p || 'MyPackage'); | |
7b8d334a | 1673 | |
6df41af2 GS |
1674 | =item %s: Expression syntax |
1675 | ||
be771a83 GS |
1676 | (A) You've accidentally run your script through B<csh> instead of Perl. |
1677 | Check the #! line, or manually feed your script into Perl yourself. | |
6df41af2 GS |
1678 | |
1679 | =item %s failed--call queue aborted | |
1680 | ||
3c10abe3 AG |
1681 | (F) An untrapped exception was raised while executing a UNITCHECK, |
1682 | CHECK, INIT, or END subroutine. Processing of the remainder of the | |
1683 | queue of such routines has been prematurely ended. | |
6df41af2 | 1684 | |
7253e4e3 | 1685 | =item False [] range "%s" in regex; marked by <-- HERE in m/%s/ |
73b437c8 | 1686 | |
be771a83 | 1687 | (W regexp) A character class range must start and end at a literal |
7253e4e3 RK |
1688 | character, not another character class like C<\d> or C<[:alpha:]>. The "-" |
1689 | in your false range is interpreted as a literal "-". Consider quoting the | |
1690 | "-", "\-". The <-- HERE shows in the regular expression about where the | |
1691 | problem was discovered. See L<perlre>. | |
73b437c8 | 1692 | |
748a9306 | 1693 | =item Fatal VMS error at %s, line %d |
a0d0e21e | 1694 | |
be771a83 GS |
1695 | (P) An error peculiar to VMS. Something untoward happened in a VMS |
1696 | system service or RTL routine; Perl's exit status should provide more | |
1697 | details. The filename in "at %s" and the line number in "line %d" tell | |
1698 | you which section of the Perl source code is distressed. | |
a0d0e21e LW |
1699 | |
1700 | =item fcntl is not implemented | |
1701 | ||
1702 | (F) Your machine apparently doesn't implement fcntl(). What is this, a | |
1703 | PDP-11 or something? | |
1704 | ||
22846ab4 AB |
1705 | =item FETCHSIZE returned a negative value |
1706 | ||
1707 | (F) A tied array claimed to have a negative number of elements, which | |
1708 | is not possible. | |
1709 | ||
f337b084 TH |
1710 | =item Field too wide in 'u' format in pack |
1711 | ||
1712 | (W pack) Each line in an uuencoded string start with a length indicator | |
1713 | which can't encode values above 63. So there is no point in asking for | |
1714 | a line length bigger than that. Perl will behave as if you specified | |
1715 | C<u63> as format. | |
1716 | ||
af8c498a | 1717 | =item Filehandle %s opened only for input |
a0d0e21e | 1718 | |
6c8d78fb HS |
1719 | (W io) You tried to write on a read-only filehandle. If you intended |
1720 | it to be a read-write filehandle, you needed to open it with "+<" or | |
1721 | "+>" or "+>>" instead of with "<" or nothing. If you intended only to | |
1722 | write the file, use ">" or ">>". See L<perlfunc/open>. | |
a0d0e21e | 1723 | |
af8c498a | 1724 | =item Filehandle %s opened only for output |
a0d0e21e | 1725 | |
6c8d78fb HS |
1726 | (W io) You tried to read from a filehandle opened only for writing, If |
1727 | you intended it to be a read/write filehandle, you needed to open it | |
be771a83 GS |
1728 | with "+<" or "+>" or "+>>" instead of with "<" or nothing. If you |
1729 | intended only to read from the file, use "<". See L<perlfunc/open>. | |
6c8d78fb HS |
1730 | Another possibility is that you attempted to open filedescriptor 0 |
1731 | (also known as STDIN) for output (maybe you closed STDIN earlier?). | |
97828cef RGS |
1732 | |
1733 | =item Filehandle %s reopened as %s only for input | |
1734 | ||
1735 | (W io) You opened for reading a filehandle that got the same filehandle id | |
d7f8936a | 1736 | as STDOUT or STDERR. This occurred because you closed STDOUT or STDERR |
97828cef RGS |
1737 | previously. |
1738 | ||
1739 | =item Filehandle STDIN reopened as %s only for output | |
1740 | ||
1741 | (W io) You opened for writing a filehandle that got the same filehandle id | |
d7f8936a | 1742 | as STDIN. This occurred because you closed STDIN previously. |
a0d0e21e LW |
1743 | |
1744 | =item Final $ should be \$ or $name | |
1745 | ||
1746 | (F) You must now decide whether the final $ in a string was meant to be | |
be771a83 GS |
1747 | a literal dollar sign, or was meant to introduce a variable name that |
1748 | happens to be missing. So you have to put either the backslash or the | |
1749 | name. | |
a0d0e21e | 1750 | |
56e90b21 GS |
1751 | =item flock() on closed filehandle %s |
1752 | ||
be771a83 | 1753 | (W closed) The filehandle you're attempting to flock() got itself closed |
c289d2f7 | 1754 | some time before now. Check your control flow. flock() operates on |
be771a83 GS |
1755 | filehandles. Are you attempting to call flock() on a dirhandle by the |
1756 | same name? | |
56e90b21 | 1757 | |
6df41af2 GS |
1758 | =item Format not terminated |
1759 | ||
1760 | (F) A format must be terminated by a line with a solitary dot. Perl got | |
1761 | to the end of your file without finding such a line. | |
1762 | ||
a0d0e21e LW |
1763 | =item Format %s redefined |
1764 | ||
e476b1b5 | 1765 | (W redefine) You redefined a format. To suppress this warning, say |
a0d0e21e LW |
1766 | |
1767 | { | |
271595cc | 1768 | no warnings 'redefine'; |
a0d0e21e LW |
1769 | eval "format NAME =..."; |
1770 | } | |
1771 | ||
a0d0e21e LW |
1772 | =item Found = in conditional, should be == |
1773 | ||
e476b1b5 | 1774 | (W syntax) You said |
a0d0e21e LW |
1775 | |
1776 | if ($foo = 123) | |
1777 | ||
1778 | when you meant | |
1779 | ||
1780 | if ($foo == 123) | |
1781 | ||
1782 | (or something like that). | |
1783 | ||
6df41af2 GS |
1784 | =item %s found where operator expected |
1785 | ||
56da5a46 RGS |
1786 | (S syntax) The Perl lexer knows whether to expect a term or an operator. |
1787 | If it sees what it knows to be a term when it was expecting to see an | |
be771a83 GS |
1788 | operator, it gives you this warning. Usually it indicates that an |
1789 | operator or delimiter was omitted, such as a semicolon. | |
6df41af2 | 1790 | |
a0d0e21e LW |
1791 | =item gdbm store returned %d, errno %d, key "%s" |
1792 | ||
1793 | (S) A warning from the GDBM_File extension that a store failed. | |
1794 | ||
1795 | =item gethostent not implemented | |
1796 | ||
1797 | (F) Your C library apparently doesn't implement gethostent(), probably | |
1798 | because if it did, it'd feel morally obligated to return every hostname | |
1799 | on the Internet. | |
1800 | ||
69282e91 | 1801 | =item get%sname() on closed socket %s |
a0d0e21e | 1802 | |
be771a83 GS |
1803 | (W closed) You tried to get a socket or peer socket name on a closed |
1804 | socket. Did you forget to check the return value of your socket() call? | |
a0d0e21e | 1805 | |
748a9306 LW |
1806 | =item getpwnam returned invalid UIC %#o for user "%s" |
1807 | ||
1808 | (S) A warning peculiar to VMS. The call to C<sys$getuai> underlying the | |
1809 | C<getpwnam> operator returned an invalid UIC. | |
1810 | ||
6df41af2 GS |
1811 | =item getsockopt() on closed socket %s |
1812 | ||
be771a83 GS |
1813 | (W closed) You tried to get a socket option on a closed socket. Did you |
1814 | forget to check the return value of your socket() call? See | |
6df41af2 GS |
1815 | L<perlfunc/getsockopt>. |
1816 | ||
1817 | =item Global symbol "%s" requires explicit package name | |
1818 | ||
a4edf47d | 1819 | (F) You've said "use strict" or "use strict vars", which indicates |
30c282f6 | 1820 | that all variables must either be lexically scoped (using "my" or "state"), |
a4edf47d GS |
1821 | declared beforehand using "our", or explicitly qualified to say |
1822 | which package the global variable is in (using "::"). | |
6df41af2 | 1823 | |
e476b1b5 GS |
1824 | =item glob failed (%s) |
1825 | ||
be771a83 GS |
1826 | (W glob) Something went wrong with the external program(s) used for |
1827 | C<glob> and C<< <*.c> >>. Usually, this means that you supplied a | |
1828 | C<glob> pattern that caused the external program to fail and exit with a | |
1829 | nonzero status. If the message indicates that the abnormal exit | |
1830 | resulted in a coredump, this may also mean that your csh (C shell) is | |
1831 | broken. If so, you should change all of the csh-related variables in | |
1832 | config.sh: If you have tcsh, make the variables refer to it as if it | |
1833 | were csh (e.g. C<full_csh='/usr/bin/tcsh'>); otherwise, make them all | |
1834 | empty (except that C<d_csh> should be C<'undef'>) so that Perl will | |
1835 | think csh is missing. In either case, after editing config.sh, run | |
75b44862 | 1836 | C<./Configure -S> and rebuild Perl. |
e476b1b5 | 1837 | |
a0d0e21e LW |
1838 | =item Glob not terminated |
1839 | ||
1840 | (F) The lexer saw a left angle bracket in a place where it was expecting | |
be771a83 GS |
1841 | a term, so it's looking for the corresponding right angle bracket, and |
1842 | not finding it. Chances are you left some needed parentheses out | |
1843 | earlier in the line, and you really meant a "less than". | |
a0d0e21e | 1844 | |
8b56d6ff FC |
1845 | =item gmtime(%.0f) too large |
1846 | ||
1847 | (W overflow) You called C<gmtime> with an number that was beyond the 64-bit | |
1848 | range that it accepts, and some rounding resulted. This warning is also | |
1849 | triggered with nan (the special not-a-number value). | |
1850 | ||
6df41af2 | 1851 | =item Got an error from DosAllocMem |
a0d0e21e | 1852 | |
6df41af2 GS |
1853 | (P) An error peculiar to OS/2. Most probably you're using an obsolete |
1854 | version of Perl, and this should not happen anyway. | |
a0d0e21e LW |
1855 | |
1856 | =item goto must have label | |
1857 | ||
1858 | (F) Unlike with "next" or "last", you're not allowed to goto an | |
1859 | unspecified destination. See L<perlfunc/goto>. | |
1860 | ||
49704364 | 1861 | =item ()-group starts with a count |
18529408 | 1862 | |
49704364 | 1863 | (F) A ()-group started with a count. A count is |
18529408 | 1864 | supposed to follow something: a template character or a ()-group. |
49704364 | 1865 | See L<perlfunc/pack>. |
18529408 | 1866 | |
fe13d51d | 1867 | =item %s had compilation errors. |
6df41af2 GS |
1868 | |
1869 | (F) The final summary message when a C<perl -c> fails. | |
1870 | ||
a0d0e21e LW |
1871 | =item Had to create %s unexpectedly |
1872 | ||
be771a83 GS |
1873 | (S internal) A routine asked for a symbol from a symbol table that ought |
1874 | to have existed already, but for some reason it didn't, and had to be | |
1875 | created on an emergency basis to prevent a core dump. | |
a0d0e21e LW |
1876 | |
1877 | =item Hash %%s missing the % in argument %d of %s() | |
1878 | ||
be771a83 GS |
1879 | (D deprecated) Really old Perl let you omit the % on hash names in some |
1880 | spots. This is now heavily deprecated. | |
a0d0e21e | 1881 | |
6df41af2 GS |
1882 | =item %s has too many errors |
1883 | ||
1884 | (F) The parser has given up trying to parse the program after 10 errors. | |
1885 | Further error messages would likely be uninformative. | |
1886 | ||
252aa082 JH |
1887 | =item Hexadecimal number > 0xffffffff non-portable |
1888 | ||
e476b1b5 | 1889 | (W portable) The hexadecimal number you specified is larger than 2**32-1 |
9e24b6e2 JH |
1890 | (4294967295) and therefore non-portable between systems. See |
1891 | L<perlport> for more on portability concerns. | |
252aa082 | 1892 | |
8903cb82 | 1893 | =item Identifier too long |
1894 | ||
1895 | (F) Perl limits identifiers (names for variables, functions, etc.) to | |
fc36a67e | 1896 | about 250 characters for simple names, and somewhat more for compound |
be771a83 GS |
1897 | names (like C<$A::B>). You've exceeded Perl's limits. Future versions |
1898 | of Perl are likely to eliminate these arbitrary limitations. | |
8903cb82 | 1899 | |
fc8cd66c YO |
1900 | =item Ignoring %s in character class in regex; marked by <-- HERE in m/%s/ |
1901 | ||
38a44b82 | 1902 | (W) Named Unicode character escapes (\N{...}) may return multi-char |
fc8cd66c | 1903 | or zero length sequences. When such an escape is used in a character class |
1a147d38 | 1904 | its behaviour is not well defined. Check that the correct escape has |
fc8cd66c YO |
1905 | been used, and the correct charname handler is in scope. |
1906 | ||
6df41af2 | 1907 | =item Illegal binary digit %s |
f675dbe5 | 1908 | |
6df41af2 | 1909 | (F) You used a digit other than 0 or 1 in a binary number. |
f675dbe5 | 1910 | |
6df41af2 | 1911 | =item Illegal binary digit %s ignored |
a0d0e21e | 1912 | |
be771a83 GS |
1913 | (W digit) You may have tried to use a digit other than 0 or 1 in a |
1914 | binary number. Interpretation of the binary number stopped before the | |
1915 | offending digit. | |
a0d0e21e | 1916 | |
4fdae800 | 1917 | =item Illegal character %s (carriage return) |
1918 | ||
d5898338 | 1919 | (F) Perl normally treats carriage returns in the program text as it |
be771a83 GS |
1920 | would any other whitespace, which means you should never see this error |
1921 | when Perl was built using standard options. For some reason, your | |
1922 | version of Perl appears to have been built without this support. Talk | |
1923 | to your Perl administrator. | |
4fdae800 | 1924 | |
d37a9538 ST |
1925 | =item Illegal character in prototype for %s : %s |
1926 | ||
420cdfc1 | 1927 | (W syntax) An illegal character was found in a prototype declaration. Legal |
d37a9538 ST |
1928 | characters in prototypes are $, @, %, *, ;, [, ], &, and \. |
1929 | ||
904d85c5 RGS |
1930 | =item Illegal declaration of anonymous subroutine |
1931 | ||
1932 | (F) When using the C<sub> keyword to construct an anonymous subroutine, | |
1933 | you must always specify a block of code. See L<perlsub>. | |
1934 | ||
8e742a20 MHM |
1935 | =item Illegal declaration of subroutine %s |
1936 | ||
1937 | (F) A subroutine was not declared correctly. See L<perlsub>. | |
1938 | ||
a0d0e21e LW |
1939 | =item Illegal division by zero |
1940 | ||
be771a83 GS |
1941 | (F) You tried to divide a number by 0. Either something was wrong in |
1942 | your logic, or you need to put a conditional in to guard against | |
1943 | meaningless input. | |
a0d0e21e | 1944 | |
6df41af2 GS |
1945 | =item Illegal hexadecimal digit %s ignored |
1946 | ||
be771a83 GS |
1947 | (W digit) You may have tried to use a character other than 0 - 9 or |
1948 | A - F, a - f in a hexadecimal number. Interpretation of the hexadecimal | |
1949 | number stopped before the illegal character. | |
6df41af2 | 1950 | |
a0d0e21e LW |
1951 | =item Illegal modulus zero |
1952 | ||
be771a83 GS |
1953 | (F) You tried to divide a number by 0 to get the remainder. Most |
1954 | numbers don't take to this kindly. | |
a0d0e21e | 1955 | |
6df41af2 | 1956 | =item Illegal number of bits in vec |
399388f4 | 1957 | |
6df41af2 GS |
1958 | (F) The number of bits in vec() (the third argument) must be a power of |
1959 | two from 1 to 32 (or 64, if your platform supports that). | |
399388f4 GS |
1960 | |
1961 | =item Illegal octal digit %s | |
a0d0e21e | 1962 | |
d1be9408 | 1963 | (F) You used an 8 or 9 in an octal number. |
a0d0e21e | 1964 | |
399388f4 | 1965 | =item Illegal octal digit %s ignored |
748a9306 | 1966 | |
d1be9408 | 1967 | (W digit) You may have tried to use an 8 or 9 in an octal number. |
75b44862 | 1968 | Interpretation of the octal number stopped before the 8 or 9. |
748a9306 | 1969 | |
fe13d51d | 1970 | =item Illegal switch in PERL5OPT: -%c |
6ff81951 | 1971 | |
6df41af2 | 1972 | (X) The PERL5OPT environment variable may only be used to set the |
646ca9b2 | 1973 | following switches: B<-[CDIMUdmtw]>. |
6ff81951 | 1974 | |
6df41af2 | 1975 | =item Ill-formed CRTL environ value "%s" |
81e118e0 | 1976 | |
75b44862 | 1977 | (W internal) A warning peculiar to VMS. Perl tried to read the CRTL's |
be771a83 GS |
1978 | internal environ array, and encountered an element without the C<=> |
1979 | delimiter used to separate keys from values. The element is ignored. | |
09bef843 | 1980 | |
6df41af2 | 1981 | =item Ill-formed message in prime_env_iter: |%s| |
54310121 | 1982 | |
be771a83 GS |
1983 | (W internal) A warning peculiar to VMS. Perl tried to read a logical |
1984 | name or CLI symbol definition when preparing to iterate over %ENV, and | |
1985 | didn't see the expected delimiter between key and value, so the line was | |
1986 | ignored. | |
54310121 | 1987 | |
6df41af2 | 1988 | =item (in cleanup) %s |
9607fc9c | 1989 | |
be771a83 GS |
1990 | (W misc) This prefix usually indicates that a DESTROY() method raised |
1991 | the indicated exception. Since destructors are usually called by the | |
1992 | system at arbitrary points during execution, and often a vast number of | |
1993 | times, the warning is issued only once for any number of failures that | |
1994 | would otherwise result in the same message being repeated. | |
6df41af2 | 1995 | |
be771a83 GS |
1996 | Failure of user callbacks dispatched using the C<G_KEEPERR> flag could |
1997 | also result in this warning. See L<perlcall/G_KEEPERR>. | |
9607fc9c | 1998 | |
2c7d6b9c RGS |
1999 | =item Inconsistent hierarchy during C3 merge of class '%s': merging failed on parent '%s' |
2000 | ||
2001 | (F) The method resolution order (MRO) of the given class is not | |
2002 | C3-consistent, and you have enabled the C3 MRO for this class. See the C3 | |
2003 | documentation in L<mro> for more information. | |
2004 | ||
979699d9 JH |
2005 | =item In EBCDIC the v-string components cannot exceed 2147483647 |
2006 | ||
2007 | (F) An error peculiar to EBCDIC. Internally, v-strings are stored as | |
2008 | Unicode code points, and encoded in EBCDIC as UTF-EBCDIC. The UTF-EBCDIC | |
2009 | encoding is limited to code points no larger than 2147483647 (0x7FFFFFFF). | |
2010 | ||
1a147d38 YO |
2011 | =item Infinite recursion in regex; marked by <-- HERE in m/%s/ |
2012 | ||
2013 | (F) You used a pattern that references itself without consuming any input | |
2014 | text. You should check the pattern to ensure that recursive patterns | |
2015 | either consume text or fail. | |
2016 | ||
2017 | The <-- HERE shows in the regular expression about where the problem was | |
2018 | discovered. | |
2019 | ||
6dbe9451 NC |
2020 | =item Initialization of state variables in list context currently forbidden |
2021 | ||
2022 | (F) Currently the implementation of "state" only permits the initialization | |
2023 | of scalar variables in scalar context. Re-write C<state ($a) = 42> as | |
2024 | C<state $a = 42> to change from list to scalar context. Constructions such | |
2025 | as C<state (@a) = foo()> will be supported in a future perl release. | |
2026 | ||
a0d0e21e LW |
2027 | =item Insecure dependency in %s |
2028 | ||
8b1a09fc | 2029 | (F) You tried to do something that the tainting mechanism didn't like. |
be771a83 GS |
2030 | The tainting mechanism is turned on when you're running setuid or |
2031 | setgid, or when you specify B<-T> to turn it on explicitly. The | |
2032 | tainting mechanism labels all data that's derived directly or indirectly | |
2033 | from the user, who is considered to be unworthy of your trust. If any | |
2034 | such data is used in a "dangerous" operation, you get this error. See | |
2035 | L<perlsec> for more information. | |
a0d0e21e LW |
2036 | |
2037 | =item Insecure directory in %s | |
2038 | ||
be771a83 GS |
2039 | (F) You can't use system(), exec(), or a piped open in a setuid or |
2040 | setgid script if C<$ENV{PATH}> contains a directory that is writable by | |
df98f984 RGS |
2041 | the world. Also, the PATH must not contain any relative directory. |
2042 | See L<perlsec>. | |
a0d0e21e | 2043 | |
62f468fc | 2044 | =item Insecure $ENV{%s} while running %s |
a0d0e21e LW |
2045 | |
2046 | (F) You can't use system(), exec(), or a piped open in a setuid or | |
62f468fc | 2047 | setgid script if any of C<$ENV{PATH}>, C<$ENV{IFS}>, C<$ENV{CDPATH}>, |
332d5f78 SR |
2048 | C<$ENV{ENV}>, C<$ENV{BASH_ENV}> or C<$ENV{TERM}> are derived from data |
2049 | supplied (or potentially supplied) by the user. The script must set | |
2050 | the path to a known value, using trustworthy data. See L<perlsec>. | |
a0d0e21e | 2051 | |
a7ae9550 GS |
2052 | =item Integer overflow in %s number |
2053 | ||
75b44862 | 2054 | (W overflow) The hexadecimal, octal or binary number you have specified |
be771a83 GS |
2055 | either as a literal or as an argument to hex() or oct() is too big for |
2056 | your architecture, and has been converted to a floating point number. | |
2057 | On a 32-bit architecture the largest hexadecimal, octal or binary number | |
9e24b6e2 JH |
2058 | representable without overflow is 0xFFFFFFFF, 037777777777, or |
2059 | 0b11111111111111111111111111111111 respectively. Note that Perl | |
2060 | transparently promotes all numbers to a floating point representation | |
2061 | internally--subject to loss of precision errors in subsequent | |
2062 | operations. | |
bbce6d69 | 2063 | |
2fba7546 GA |
2064 | =item Integer overflow in format string for %s |
2065 | ||
0be96356 AL |
2066 | (F) The indexes and widths specified in the format string of C<printf()> |
2067 | or C<sprintf()> are too large. The numbers must not overflow the size of | |
2fba7546 GA |
2068 | integers for your architecture. |
2069 | ||
46314c13 JP |
2070 | =item Integer overflow in version |
2071 | ||
2072 | (F) Some portion of a version initialization is too large for the | |
2073 | size of integers for your architecture. This is not a warning | |
2074 | because there is no rational reason for a version to try and use a | |
2075 | element larger than typically 2**32. This is usually caused by | |
2076 | trying to use some odd mathematical operation as a version, like | |
2077 | 100/9. | |
2078 | ||
7253e4e3 | 2079 | =item Internal disaster in regex; marked by <-- HERE in m/%s/ |
6df41af2 GS |
2080 | |
2081 | (P) Something went badly wrong in the regular expression parser. | |
7253e4e3 | 2082 | The <-- HERE shows in the regular expression about where the problem was |
b45f050a JF |
2083 | discovered. |
2084 | ||
748a9306 LW |
2085 | =item Internal inconsistency in tracking vforks |
2086 | ||
be771a83 GS |
2087 | (S) A warning peculiar to VMS. Perl keeps track of the number of times |
2088 | you've called C<fork> and C<exec>, to determine whether the current call | |
2089 | to C<exec> should affect the current script or a subprocess (see | |
2090 | L<perlvms/"exec LIST">). Somehow, this count has become scrambled, so | |
2091 | Perl is making a guess and treating this C<exec> as a request to | |
2092 | terminate the Perl script and execute the specified command. | |
748a9306 | 2093 | |
7253e4e3 | 2094 | =item Internal urp in regex; marked by <-- HERE in m/%s/ |
b45f050a | 2095 | |
7253e4e3 RK |
2096 | (P) Something went badly awry in the regular expression parser. The |
2097 | <-- HERE shows in the regular expression about where the problem was | |
2098 | discovered. | |
a0d0e21e | 2099 | |
6df41af2 GS |
2100 | =item %s (...) interpreted as function |
2101 | ||
75b44862 | 2102 | (W syntax) You've run afoul of the rule that says that any list operator |
be771a83 | 2103 | followed by parentheses turns into a function, with all the list |
64977eb6 | 2104 | operators arguments found inside the parentheses. See |
13a2d996 | 2105 | L<perlop/Terms and List Operators (Leftward)>. |
6df41af2 | 2106 | |
09bef843 SB |
2107 | =item Invalid %s attribute: %s |
2108 | ||
2109 | The indicated attribute for a subroutine or variable was not recognized | |
2110 | by Perl or by a user-supplied handler. See L<attributes>. | |
2111 | ||
2112 | =item Invalid %s attributes: %s | |
2113 | ||
be771a83 GS |
2114 | The indicated attributes for a subroutine or variable were not |
2115 | recognized by Perl or by a user-supplied handler. See L<attributes>. | |
09bef843 | 2116 | |
c635e13b | 2117 | =item Invalid conversion in %s: "%s" |
2118 | ||
be771a83 GS |
2119 | (W printf) Perl does not understand the given format conversion. See |
2120 | L<perlfunc/sprintf>. | |
c635e13b | 2121 | |
9e08bc66 TS |
2122 | =item Invalid escape in the specified encoding in regex; marked by <-- HERE in m/%s/ |
2123 | ||
2124 | (W regexp) The numeric escape (for example C<\xHH>) of value < 256 | |
2125 | didn't correspond to a single character through the conversion | |
2126 | from the encoding specified by the encoding pragma. | |
2127 | The escape was replaced with REPLACEMENT CHARACTER (U+FFFD) instead. | |
2128 | The <-- HERE shows in the regular expression about where the | |
2129 | escape was discovered. | |
2130 | ||
2c7d6b9c RGS |
2131 | =item Invalid mro name: '%s' |
2132 | ||
2133 | (F) You tried to C<mro::set_mro("classname", "foo")> | |
2134 | or C<use mro 'foo'>, where C<foo> is not a valid method resolution order (MRO). | |
2135 | (Currently, the only valid ones are C<dfs> and C<c3>). See L<mro>. | |
2136 | ||
7253e4e3 | 2137 | =item Invalid [] range "%s" in regex; marked by <-- HERE in m/%s/ |
6df41af2 GS |
2138 | |
2139 | (F) The range specified in a character class had a minimum character | |
7253e4e3 RK |
2140 | greater than the maximum character. One possibility is that you forgot the |
2141 | C<{}> from your ending C<\x{}> - C<\x> without the curly braces can go only | |
2142 | up to C<ff>. The <-- HERE shows in the regular expression about where the | |
2143 | problem was discovered. See L<perlre>. | |
6df41af2 | 2144 | |
d1573ac7 | 2145 | =item Invalid range "%s" in transliteration operator |
c2e66d9e GS |
2146 | |
2147 | (F) The range specified in the tr/// or y/// operator had a minimum | |
2148 | character greater than the maximum character. See L<perlop>. | |
2149 | ||
09bef843 SB |
2150 | =item Invalid separator character %s in attribute list |
2151 | ||
0120eecf | 2152 | (F) Something other than a colon or whitespace was seen between the |
be771a83 GS |
2153 | elements of an attribute list. If the previous attribute had a |
2154 | parenthesised parameter list, perhaps that list was terminated too soon. | |
2155 | See L<attributes>. | |
09bef843 | 2156 | |
b4581f09 JH |
2157 | =item Invalid separator character %s in PerlIO layer specification %s |
2158 | ||
2159 | (W layer) When pushing layers onto the Perl I/O system, something other than a | |
2160 | colon or whitespace was seen between the elements of a layer list. | |
2161 | If the previous attribute had a parenthesised parameter list, perhaps that | |
2162 | list was terminated too soon. | |
2163 | ||
49704364 | 2164 | =item Invalid type '%s' in %s |
96e4d5b1 | 2165 | |
49704364 WL |
2166 | (F) The given character is not a valid pack or unpack type. |
2167 | See L<perlfunc/pack>. | |
2168 | (W) The given character is not a valid pack or unpack type but used to be | |
75b44862 | 2169 | silently ignored. |
96e4d5b1 | 2170 | |
46314c13 JP |
2171 | =item Invalid version format (multiple underscores) |
2172 | ||
2173 | (F) Versions may contain at most a single underscore, which signals | |
2174 | that the version is a beta release. See L<version> for the allowed | |
2175 | version formats. | |
2176 | ||
2177 | =item Invalid version format (underscores before decimal) | |
2178 | ||
2179 | (F) Versions may not contain decimals after the optional underscore. | |
2180 | See L<version> for the allowed version formats. | |
2181 | ||
a0d0e21e LW |
2182 | =item ioctl is not implemented |
2183 | ||
2184 | (F) Your machine apparently doesn't implement ioctl(), which is pretty | |
2185 | strange for a machine that supports C. | |
2186 | ||
c289d2f7 JH |
2187 | =item ioctl() on unopened %s |
2188 | ||
2189 | (W unopened) You tried ioctl() on a filehandle that was never opened. | |
2190 | Check you control flow and number of arguments. | |
2191 | ||
fe13d51d | 2192 | =item IO layers (like '%s') unavailable |
363c40c4 SB |
2193 | |
2194 | (F) Your Perl has not been configured to have PerlIO, and therefore | |
2195 | you cannot use IO layers. To have PerlIO Perl must be configured | |
2196 | with 'useperlio'. | |
2197 | ||
80cbd5ad JH |
2198 | =item IO::Socket::atmark not implemented on this architecture |
2199 | ||
2200 | (F) Your machine doesn't implement the sockatmark() functionality, | |
2201 | neither as a system call or an ioctl call (SIOCATMARK). | |
2202 | ||
b4581f09 JH |
2203 | =item $* is no longer supported |
2204 | ||
d1d15184 | 2205 | (D deprecated, syntax) The special variable C<$*>, deprecated in older perls, has |
4fd19576 B |
2206 | been removed as of 5.9.0 and is no longer supported. In previous versions of perl the use of |
2207 | C<$*> enabled or disabled multi-line matching within a string. | |
2208 | ||
2209 | Instead of using C<$*> you should use the C</m> (and maybe C</s>) regexp | |
2210 | modifiers. (In older versions: when C<$*> was set to a true value then all regular | |
2211 | expressions behaved as if they were written using C</m>.) | |
b4581f09 | 2212 | |
8ae1fe26 RGS |
2213 | =item $# is no longer supported |
2214 | ||
d1d15184 | 2215 | (D deprecated, syntax) The special variable C<$#>, deprecated in older perls, has |
8ae1fe26 RGS |
2216 | been removed as of 5.9.3 and is no longer supported. You should use the |
2217 | printf/sprintf functions instead. | |
2218 | ||
6ad11d81 JH |
2219 | =item `%s' is not a code reference |
2220 | ||
04a80ee0 RGS |
2221 | (W overload) The second (fourth, sixth, ...) argument of overload::constant |
2222 | needs to be a code reference. Either an anonymous subroutine, or a reference | |
6ad11d81 JH |
2223 | to a subroutine. |
2224 | ||
2225 | =item `%s' is not an overloadable type | |
2226 | ||
04a80ee0 RGS |
2227 | (W overload) You tried to overload a constant type the overload package is |
2228 | unaware of. | |
6ad11d81 | 2229 | |
a0d0e21e LW |
2230 | =item junk on end of regexp |
2231 | ||
2232 | (P) The regular expression parser is confused. | |
2233 | ||
2234 | =item Label not found for "last %s" | |
2235 | ||
be771a83 GS |
2236 | (F) You named a loop to break out of, but you're not currently in a loop |
2237 | of that name, not even if you count where you were called from. See | |
2238 | L<perlfunc/last>. | |
a0d0e21e LW |
2239 | |
2240 | =item Label not found for "next %s" | |
2241 | ||
2242 | (F) You named a loop to continue, but you're not currently in a loop of | |
2243 | that name, not even if you count where you were called from. See | |
2244 | L<perlfunc/last>. | |
2245 | ||
2246 | =item Label not found for "redo %s" | |
2247 | ||
2248 | (F) You named a loop to restart, but you're not currently in a loop of | |
2249 | that name, not even if you count where you were called from. See | |
2250 | L<perlfunc/last>. | |
2251 | ||
85ab1d1d | 2252 | =item leaving effective %s failed |
5ff3f7a4 | 2253 | |
85ab1d1d | 2254 | (F) While under the C<use filetest> pragma, switching the real and |
5ff3f7a4 GS |
2255 | effective uids or gids failed. |
2256 | ||
49704364 WL |
2257 | =item length/code after end of string in unpack |
2258 | ||
d7f8936a | 2259 | (F) While unpacking, the string buffer was already used up when an unpack |
49704364 WL |
2260 | length/code combination tried to obtain more data. This results in |
2261 | an undefined value for the length. See L<perlfunc/pack>. | |
2262 | ||
f0e67a1d Z |
2263 | =item Lexing code attempted to stuff non-Latin-1 character into Latin-1 input |
2264 | ||
2265 | (F) An extension is attempting to insert text into the current parse | |
2266 | (using L<lex_stuff_pvn_flags|perlapi/lex_stuff_pvn_flags> or similar), but | |
2267 | tried to insert a character that couldn't be part of the current input. | |
2268 | This is an inherent pitfall of the stuffing mechanism, and one of the | |
2269 | reasons to avoid it. Where it is necessary to stuff, stuffing only | |
2270 | plain ASCII is recommended. | |
2271 | ||
2272 | =item Lexing code internal error (%s) | |
2273 | ||
2274 | (F) Lexing code supplied by an extension violated the lexer's API in a | |
2275 | detectable way. | |
2276 | ||
69282e91 | 2277 | =item listen() on closed socket %s |
a0d0e21e | 2278 | |
be771a83 GS |
2279 | (W closed) You tried to do a listen on a closed socket. Did you forget |
2280 | to check the return value of your socket() call? See | |
2281 | L<perlfunc/listen>. | |
a0d0e21e | 2282 | |
8b56d6ff FC |
2283 | =item localtime(%.0f) too large |
2284 | ||
2285 | (W overflow) You called C<localtime> with an number that was beyond the | |
2286 | 64-bit range that it accepts, and some rounding resulted. This warning is also triggered with nan (the special not-a-number value). | |
2287 | ||
58e23c8d | 2288 | =item Lookbehind longer than %d not implemented in regex m/%s/ |
b45f050a JF |
2289 | |
2290 | (F) There is currently a limit on the length of string which lookbehind can | |
58e23c8d | 2291 | handle. This restriction may be eased in a future release. |
2e50fd82 | 2292 | |
b88df990 NC |
2293 | =item Lost precision when %s %f by 1 |
2294 | ||
2295 | (W) The value you attempted to increment or decrement by one is too large | |
2296 | for the underlying floating point representation to store accurately, | |
2297 | hence the target of C<++> or C<--> is unchanged. Perl issues this warning | |
2298 | because it has already switched from integers to floating point when values | |
2299 | are too large for integers, and now even floating point is insufficient. | |
2300 | You may wish to switch to using L<Math::BigInt> explicitly. | |
2301 | ||
2f7da168 RK |
2302 | =item lstat() on filehandle %s |
2303 | ||
2304 | (W io) You tried to do an lstat on a filehandle. What did you mean | |
2305 | by that? lstat() makes sense only on filenames. (Perl did a fstat() | |
2306 | instead on the filehandle.) | |
2307 | ||
96ebfdd7 RK |
2308 | =item Lvalue subs returning %s not implemented yet |
2309 | ||
2310 | (F) Due to limitations in the current implementation, array and hash | |
2311 | values cannot be returned in subroutines used in lvalue context. See | |
2312 | L<perlsub/"Lvalue subroutines">. | |
2313 | ||
49704364 WL |
2314 | =item Malformed integer in [] in pack |
2315 | ||
2316 | (F) Between the brackets enclosing a numeric repeat count only digits | |
2317 | are permitted. See L<perlfunc/pack>. | |
2318 | ||
2319 | =item Malformed integer in [] in unpack | |
2320 | ||
2321 | (F) Between the brackets enclosing a numeric repeat count only digits | |
2322 | are permitted. See L<perlfunc/pack>. | |
2323 | ||
6df41af2 GS |
2324 | =item Malformed PERLLIB_PREFIX |
2325 | ||
2326 | (F) An error peculiar to OS/2. PERLLIB_PREFIX should be of the form | |
2327 | ||
2328 | prefix1;prefix2 | |
2329 | ||
2330 | or | |
6df41af2 GS |
2331 | prefix1 prefix2 |
2332 | ||
be771a83 GS |
2333 | with nonempty prefix1 and prefix2. If C<prefix1> is indeed a prefix of |
2334 | a builtin library search path, prefix2 is substituted. The error may | |
2335 | appear if components are not found, or are too long. See | |
fecfaeb8 | 2336 | "PERLLIB_PREFIX" in L<perlos2>. |
6df41af2 | 2337 | |
2f758a16 ST |
2338 | =item Malformed prototype for %s: %s |
2339 | ||
d37a9538 ST |
2340 | (F) You tried to use a function with a malformed prototype. The |
2341 | syntax of function prototypes is given a brief compile-time check for | |
2342 | obvious errors like invalid characters. A more rigorous check is run | |
2343 | when the function is called. | |
2f758a16 | 2344 | |
ba210ebe JH |
2345 | =item Malformed UTF-8 character (%s) |
2346 | ||
2575c402 JW |
2347 | (S utf8) (F) Perl detected a string that didn't comply with UTF-8 |
2348 | encoding rules, even though it had the UTF8 flag on. | |
ba210ebe | 2349 | |
2575c402 JW |
2350 | One possible cause is that you set the UTF8 flag yourself for data that |
2351 | you thought to be in UTF-8 but it wasn't (it was for example legacy | |
2352 | 8-bit data). To guard against this, you can use Encode::decode_utf8. | |
2353 | ||
2354 | If you use the C<:encoding(UTF-8)> PerlIO layer for input, invalid byte | |
2355 | sequences are handled gracefully, but if you use C<:utf8>, the flag is | |
2356 | set without validating the data, possibly resulting in this error | |
2357 | message. | |
2358 | ||
2359 | See also L<Encode/"Handling Malformed Data">. | |
901b21bf | 2360 | |
dea0fc0b JH |
2361 | =item Malformed UTF-16 surrogate |
2362 | ||
183097aa | 2363 | (F) Perl thought it was reading UTF-16 encoded character data but while |
dea0fc0b JH |
2364 | doing it Perl met a malformed Unicode surrogate. |
2365 | ||
f337b084 TH |
2366 | =item Malformed UTF-8 string in pack |
2367 | ||
2368 | (F) You tried to pack something that didn't comply with UTF-8 encoding | |
2369 | rules and perl was unable to guess how to make more progress. | |
2370 | ||
2371 | =item Malformed UTF-8 string in unpack | |
2372 | ||
2373 | (F) You tried to unpack something that didn't comply with UTF-8 encoding | |
2374 | rules and perl was unable to guess how to make more progress. | |
2375 | ||
2376 | =item Malformed UTF-8 string in '%c' format in unpack | |
2377 | ||
2378 | (F) You tried to unpack something that didn't comply with UTF-8 encoding | |
2379 | rules and perl was unable to guess how to make more progress. | |
2380 | ||
fe13d51d | 2381 | =item Maximal count of pending signals (%d) exceeded |
2563cec5 | 2382 | |
fe13d51d | 2383 | (F) Perl aborted due to a too high number of signals pending. This |
2563cec5 IZ |
2384 | usually indicates that your operating system tried to deliver signals |
2385 | too fast (with a very high priority), starving the perl process from | |
2386 | resources it would need to reach a point where it can process signals | |
2387 | safely. (See L<perlipc/"Deferred Signals (Safe Signals)">.) | |
2388 | ||
49704364 | 2389 | =item %s matches null string many times in regex; marked by <-- HERE in m/%s/ |
6df41af2 GS |
2390 | |
2391 | (W regexp) The pattern you've specified would be an infinite loop if the | |
7253e4e3 RK |
2392 | regular expression engine didn't specifically check for that. The <-- HERE |
2393 | shows in the regular expression about where the problem was discovered. | |
2394 | See L<perlre>. | |
6df41af2 | 2395 | |
25f58aea PN |
2396 | =item "%s" may clash with future reserved word |
2397 | ||
2398 | (W) This warning may be due to running a perl5 script through a perl4 | |
2399 | interpreter, especially if the word that is being warned about is | |
2400 | "use" or "my". | |
2401 | ||
49704364 | 2402 | =item % may not be used in pack |
6df41af2 GS |
2403 | |
2404 | (F) You can't pack a string by supplying a checksum, because the | |
be771a83 GS |
2405 | checksumming process loses information, and you can't go the other way. |
2406 | See L<perlfunc/unpack>. | |
6df41af2 | 2407 | |
a0d0e21e LW |
2408 | =item Method for operation %s not found in package %s during blessing |
2409 | ||
2410 | (F) An attempt was made to specify an entry in an overloading table that | |
e7ea3e70 | 2411 | doesn't resolve to a valid subroutine. See L<overload>. |
a0d0e21e | 2412 | |
3cdd684c TP |
2413 | =item Method %s not permitted |
2414 | ||
2415 | See Server error. | |
2416 | ||
a0d0e21e LW |
2417 | =item Might be a runaway multi-line %s string starting on line %d |
2418 | ||
2419 | (S) An advisory indicating that the previous error may have been caused | |
2420 | by a missing delimiter on a string or pattern, because it eventually | |
2421 | ended earlier on the current line. | |
2422 | ||
2423 | =item Misplaced _ in number | |
2424 | ||
d4ced10d JH |
2425 | (W syntax) An underscore (underbar) in a numeric constant did not |
2426 | separate two digits. | |
a0d0e21e | 2427 | |
7baa4690 HS |
2428 | =item Missing argument in %s |
2429 | ||
2430 | (W uninitialized) A printf-type format required more arguments than were | |
2431 | supplied. | |
2432 | ||
9e81e6a1 RGS |
2433 | =item Missing argument to -%c |
2434 | ||
2435 | (F) The argument to the indicated command line switch must follow | |
2436 | immediately after the switch, without intervening spaces. | |
2437 | ||
4a2d328f | 2438 | =item Missing %sbrace%s on \N{} |
423cee85 | 2439 | |
4a2d328f | 2440 | (F) Wrong syntax of character name literal C<\N{charname}> within |
423cee85 JH |
2441 | double-quotish context. |
2442 | ||
a0d0e21e LW |
2443 | =item Missing comma after first argument to %s function |
2444 | ||
2445 | (F) While certain functions allow you to specify a filehandle or an | |
2446 | "indirect object" before the argument list, this ain't one of them. | |
2447 | ||
06eaf0bc GS |
2448 | =item Missing command in piped open |
2449 | ||
be771a83 GS |
2450 | (W pipe) You used the C<open(FH, "| command")> or |
2451 | C<open(FH, "command |")> construction, but the command was missing or | |
2452 | blank. | |
06eaf0bc | 2453 | |
961ce445 RGS |
2454 | =item Missing control char name in \c |
2455 | ||
2456 | (F) A double-quoted string ended with "\c", without the required control | |
2457 | character name. | |
2458 | ||
6df41af2 GS |
2459 | =item Missing name in "my sub" |
2460 | ||
be771a83 GS |
2461 | (F) The reserved syntax for lexically scoped subroutines requires that |
2462 | they have a name with which they can be found. | |
6df41af2 GS |
2463 | |
2464 | =item Missing $ on loop variable | |
2465 | ||
be771a83 GS |
2466 | (F) Apparently you've been programming in B<csh> too much. Variables |
2467 | are always mentioned with the $ in Perl, unlike in the shells, where it | |
2468 | can vary from one line to the next. | |
6df41af2 | 2469 | |
cc507455 | 2470 | =item (Missing operator before %s?) |
748a9306 | 2471 | |
56da5a46 RGS |
2472 | (S syntax) This is an educated guess made in conjunction with the message |
2473 | "%s found where operator expected". Often the missing operator is a comma. | |
748a9306 | 2474 | |
ab13f0c7 JH |
2475 | =item Missing right brace on %s |
2476 | ||
6f5e54b9 | 2477 | (F) Missing right brace in C<\x{...}>, C<\p{...}> or C<\P{...}>. |
ab13f0c7 | 2478 | |
d98d5fff | 2479 | =item Missing right curly or square bracket |
a0d0e21e | 2480 | |
be771a83 GS |
2481 | (F) The lexer counted more opening curly or square brackets than closing |
2482 | ones. As a general rule, you'll find it's missing near the place you | |
2483 | were last editing. | |
a0d0e21e | 2484 | |
6df41af2 GS |
2485 | =item (Missing semicolon on previous line?) |
2486 | ||
56da5a46 RGS |
2487 | (S syntax) This is an educated guess made in conjunction with the message |
2488 | "%s found where operator expected". Don't automatically put a semicolon on | |
6df41af2 GS |
2489 | the previous line just because you saw this message. |
2490 | ||
a0d0e21e LW |
2491 | =item Modification of a read-only value attempted |
2492 | ||
2493 | (F) You tried, directly or indirectly, to change the value of a | |
5f05dabc | 2494 | constant. You didn't, of course, try "2 = 1", because the compiler |
a0d0e21e LW |
2495 | catches that. But an easy way to do the same thing is: |
2496 | ||
2497 | sub mod { $_[0] = 1 } | |
2498 | mod(2); | |
2499 | ||
2500 | Another way is to assign to a substr() that's off the end of the string. | |
2501 | ||
c5674021 |
2502 | Yet another way is to assign to a C<foreach> loop I<VAR> when I<VAR> |
2503 | is aliased to a constant in the look I<LIST>: | |
2504 | ||
2505 | $x = 1; | |
2506 | foreach my $n ($x, 2) { | |
2507 | $n *= 2; # modifies the $x, but fails on attempt to modify the 2 | |
64977eb6 | 2508 | } |
c5674021 | 2509 | |
7a4340ed | 2510 | =item Modification of non-creatable array value attempted, %s |
a0d0e21e LW |
2511 | |
2512 | (F) You tried to make an array value spring into existence, and the | |
2513 | subscript was probably negative, even counting from end of the array | |
2514 | backwards. | |
2515 | ||
7a4340ed | 2516 | =item Modification of non-creatable hash value attempted, %s |
a0d0e21e | 2517 | |
be771a83 GS |
2518 | (P) You tried to make a hash value spring into existence, and it |
2519 | couldn't be created for some peculiar reason. | |
a0d0e21e LW |
2520 | |
2521 | =item Module name must be constant | |
2522 | ||
2523 | (F) Only a bare module name is allowed as the first argument to a "use". | |
2524 | ||
be98fb35 | 2525 | =item Module name required with -%c option |
6df41af2 | 2526 | |
be98fb35 GS |
2527 | (F) The C<-M> or C<-m> options say that Perl should load some module, but |
2528 | you omitted the name of the module. Consult L<perlrun> for full details | |
2529 | about C<-M> and C<-m>. | |
6df41af2 | 2530 | |
fe13d51d | 2531 | =item More than one argument to '%s' open |
ed9aa3b7 SG |
2532 | |
2533 | (F) The C<open> function has been asked to open multiple files. This | |
2534 | can happen if you are trying to open a pipe to a command that takes a | |
2535 | list of arguments, but have forgotten to specify a piped open mode. | |
2536 | See L<perlfunc/open> for details. | |
2537 | ||
a0d0e21e LW |
2538 | =item msg%s not implemented |
2539 | ||
2540 | (F) You don't have System V message IPC on your system. | |
2541 | ||
2542 | =item Multidimensional syntax %s not supported | |
2543 | ||
75b44862 GS |
2544 | (W syntax) Multidimensional arrays aren't written like C<$foo[1,2,3]>. |
2545 | They're written like C<$foo[1][2][3]>, as in C. | |
8b1a09fc | 2546 | |
49704364 | 2547 | =item '/' must follow a numeric type in unpack |
6df41af2 | 2548 | |
49704364 WL |
2549 | (F) You had an unpack template that contained a '/', but this did not |
2550 | follow some unpack specification producing a numeric value. | |
2551 | See L<perlfunc/pack>. | |
6df41af2 GS |
2552 | |
2553 | =item "my sub" not yet implemented | |
2554 | ||
be771a83 GS |
2555 | (F) Lexically scoped subroutines are not yet implemented. Don't try |
2556 | that yet. | |
6df41af2 | 2557 | |
30c282f6 | 2558 | =item "%s" variable %s can't be in a package |
6df41af2 | 2559 | |
be771a83 GS |
2560 | (F) Lexically scoped variables aren't in a package, so it doesn't make |
2561 | sense to try to declare one with a package qualifier on the front. Use | |
2562 | local() if you want to localize a package variable. | |
09bef843 | 2563 | |
8b1a09fc | 2564 | =item Name "%s::%s" used only once: possible typo |
2565 | ||
e476b1b5 | 2566 | (W once) Typographical errors often show up as unique variable names. |
be771a83 GS |
2567 | If you had a good reason for having a unique name, then just mention it |
2568 | again somehow to suppress the message. The C<our> declaration is | |
77ca0c92 | 2569 | provided for this purpose. |
a0d0e21e | 2570 | |
64b374f4 FD |
2571 | NOTE: This warning detects symbols that have been used only once so $c, @c, |
2572 | %c, *c, &c, sub c{}, c(), and c (the filehandle or format) are considered | |
2573 | the same; if a program uses $c only once but also uses any of the others it | |
2574 | will not trigger this warning. | |
2575 | ||
49704364 WL |
2576 | =item Negative '/' count in unpack |
2577 | ||
2578 | (F) The length count obtained from a length/code unpack operation was | |
2579 | negative. See L<perlfunc/pack>. | |
2580 | ||
a0d0e21e LW |
2581 | =item Negative length |
2582 | ||
be771a83 GS |
2583 | (F) You tried to do a read/write/send/recv operation with a buffer |
2584 | length that is less than 0. This is difficult to imagine. | |
a0d0e21e | 2585 | |
ed9aa3b7 SG |
2586 | =item Negative offset to vec in lvalue context |
2587 | ||
2588 | (F) When C<vec> is called in an lvalue context, the second argument must be | |
2589 | greater than or equal to zero. | |
2590 | ||
7253e4e3 | 2591 | =item Nested quantifiers in regex; marked by <-- HERE in m/%s/ |
a0d0e21e | 2592 | |
b45f050a | 2593 | (F) You can't quantify a quantifier without intervening parentheses. So |
7253e4e3 | 2594 | things like ** or +* or ?* are illegal. The <-- HERE shows in the regular |
b45f050a | 2595 | expression about where the problem was discovered. |
a0d0e21e | 2596 | |
7253e4e3 | 2597 | Note that the minimal matching quantifiers, C<*?>, C<+?>, and |
be771a83 | 2598 | C<??> appear to be nested quantifiers, but aren't. See L<perlre>. |
a0d0e21e | 2599 | |
6df41af2 | 2600 | =item %s never introduced |
a0d0e21e | 2601 | |
be771a83 GS |
2602 | (S internal) The symbol in question was declared but somehow went out of |
2603 | scope before it could possibly have been used. | |
a0d0e21e | 2604 | |
2c7d6b9c RGS |
2605 | =item next::method/next::can/maybe::next::method cannot find enclosing method |
2606 | ||
2607 | (F) C<next::method> needs to be called within the context of a | |
2608 | real method in a real package, and it could not find such a context. | |
2609 | See L<mro>. | |
2610 | ||
a0d0e21e LW |
2611 | =item No %s allowed while running setuid |
2612 | ||
be771a83 GS |
2613 | (F) Certain operations are deemed to be too insecure for a setuid or |
2614 | setgid script to even be allowed to attempt. Generally speaking there | |
2615 | will be another way to do what you want that is, if not secure, at least | |
2616 | securable. See L<perlsec>. | |
a0d0e21e | 2617 | |
a0d0e21e LW |
2618 | =item No comma allowed after %s |
2619 | ||
2620 | (F) A list operator that has a filehandle or "indirect object" is not | |
2621 | allowed to have a comma between that and the following arguments. | |
2622 | Otherwise it'd be just another one of the arguments. | |
2623 | ||
0a753a76 | 2624 | One possible cause for this is that you expected to have imported a |
2625 | constant to your name space with B<use> or B<import> while no such | |
2626 | importing took place, it may for example be that your operating system | |
2627 | does not support that particular constant. Hopefully you did use an | |
2628 | explicit import list for the constants you expect to see, please see | |
2629 | L<perlfunc/use> and L<perlfunc/import>. While an explicit import list | |
2630 | would probably have caught this error earlier it naturally does not | |
2631 | remedy the fact that your operating system still does not support that | |
2632 | constant. Maybe you have a typo in the constants of the symbol import | |
2633 | list of B<use> or B<import> or in the constant name at the line where | |
2634 | this error was triggered? | |
2635 | ||
748a9306 LW |
2636 | =item No command into which to pipe on command line |
2637 | ||
be771a83 GS |
2638 | (F) An error peculiar to VMS. Perl handles its own command line |
2639 | redirection, and found a '|' at the end of the command line, so it | |
2640 | doesn't know where you want to pipe the output from this command. | |
748a9306 | 2641 | |
a0d0e21e LW |
2642 | =item No DB::DB routine defined |
2643 | ||
be771a83 | 2644 | (F) The currently executing code was compiled with the B<-d> switch, but |
ccafdc96 RGS |
2645 | for some reason the current debugger (e.g. F<perl5db.pl> or a C<Devel::> |
2646 | module) didn't define a routine to be called at the beginning of each | |
2647 | statement. | |
a0d0e21e LW |
2648 | |
2649 | =item No dbm on this machine | |
2650 | ||
2651 | (P) This is counted as an internal error, because every machine should | |
5f05dabc | 2652 | supply dbm nowadays, because Perl comes with SDBM. See L<SDBM_File>. |
a0d0e21e | 2653 | |
ccafdc96 | 2654 | =item No DB::sub routine defined |
a0d0e21e | 2655 | |
ccafdc96 RGS |
2656 | (F) The currently executing code was compiled with the B<-d> switch, but |
2657 | for some reason the current debugger (e.g. F<perl5db.pl> or a C<Devel::> | |
2658 | module) didn't define a C<DB::sub> routine to be called at the beginning | |
2659 | of each ordinary subroutine call. | |
a0d0e21e | 2660 | |
96ebfdd7 RK |
2661 | =item No B<-e> allowed in setuid scripts |
2662 | ||
2663 | (F) A setuid script can't be specified by the user. | |
2664 | ||
c47ff5f1 | 2665 | =item No error file after 2> or 2>> on command line |
748a9306 | 2666 | |
be771a83 GS |
2667 | (F) An error peculiar to VMS. Perl handles its own command line |
2668 | redirection, and found a '2>' or a '2>>' on the command line, but can't | |
2669 | find the name of the file to which to write data destined for stderr. | |
748a9306 | 2670 | |
49704364 WL |
2671 | =item No group ending character '%c' found in template |
2672 | ||
2673 | (F) A pack or unpack template has an opening '(' or '[' without its | |
2674 | matching counterpart. See L<perlfunc/pack>. | |
2675 | ||
c47ff5f1 | 2676 | =item No input file after < on command line |
748a9306 | 2677 | |
be771a83 GS |
2678 | (F) An error peculiar to VMS. Perl handles its own command line |
2679 | redirection, and found a '<' on the command line, but can't find the | |
2680 | name of the file from which to read data for stdin. | |
748a9306 | 2681 | |
6df41af2 GS |
2682 | =item No #! line |
2683 | ||
2684 | (F) The setuid emulator requires that scripts have a well-formed #! line | |
2685 | even on machines that don't support the #! construct. | |
2686 | ||
2c7d6b9c RGS |
2687 | =item No next::method '%s' found for %s |
2688 | ||
2689 | (F) C<next::method> found no further instances of this method name | |
2690 | in the remaining packages of the MRO of this class. If you don't want | |
2691 | it throwing an exception, use C<maybe::next::method> | |
2692 | or C<next::can>. See L<mro>. | |
2693 | ||
6df41af2 GS |
2694 | =item "no" not allowed in expression |
2695 | ||
be771a83 GS |
2696 | (F) The "no" keyword is recognized and executed at compile time, and |
2697 | returns no useful value. See L<perlmod>. | |
6df41af2 | 2698 | |
c47ff5f1 | 2699 | =item No output file after > on command line |
748a9306 | 2700 | |
be771a83 GS |
2701 | (F) An error peculiar to VMS. Perl handles its own command line |
2702 | redirection, and found a lone '>' at the end of the command line, so it | |
2703 | doesn't know where you wanted to redirect stdout. | |
748a9306 | 2704 | |
c47ff5f1 | 2705 | =item No output file after > or >> on command line |
748a9306 | 2706 | |
be771a83 GS |
2707 | (F) An error peculiar to VMS. Perl handles its own command line |
2708 | redirection, and found a '>' or a '>>' on the command line, but can't | |
2709 | find the name of the file to which to write data destined for stdout. | |
748a9306 | 2710 | |
1ec3e8de GS |
2711 | =item No package name allowed for variable %s in "our" |
2712 | ||
be771a83 GS |
2713 | (F) Fully qualified variable names are not allowed in "our" |
2714 | declarations, because that doesn't make much sense under existing | |
2715 | semantics. Such syntax is reserved for future extensions. | |
1ec3e8de | 2716 | |
a0d0e21e LW |
2717 | =item No Perl script found in input |
2718 | ||
2719 | (F) You called C<perl -x>, but no line was found in the file beginning | |
2720 | with #! and containing the word "perl". | |
2721 | ||
2722 | =item No setregid available | |
2723 | ||
2724 | (F) Configure didn't find anything resembling the setregid() call for | |
2725 | your system. | |
2726 | ||
2727 | =item No setreuid available | |
2728 | ||
2729 | (F) Configure didn't find anything resembling the setreuid() call for | |
2730 | your system. | |
2731 | ||
6df41af2 GS |
2732 | =item No %s specified for -%c |
2733 | ||
2734 | (F) The indicated command line switch needs a mandatory argument, but | |
2735 | you haven't specified one. | |
2736 | ||
e75d1f10 RD |
2737 | =item No such class field "%s" in variable %s of type %s |
2738 | ||
2739 | (F) You tried to access a key from a hash through the indicated typed variable | |
2740 | but that key is not allowed by the package of the same type. The indicated | |
2741 | package has restricted the set of allowed keys using the L<fields> pragma. | |
2742 | ||
2c692339 RGS |
2743 | =item No such class %s |
2744 | ||
30c282f6 | 2745 | (F) You provided a class qualifier in a "my", "our" or "state" declaration, but |
2c692339 RGS |
2746 | this class doesn't exist at this point in your program. |
2747 | ||
3c20a832 SP |
2748 | =item No such hook: %s |
2749 | ||
2750 | (F) You specified a signal hook that was not recognized by Perl. Currently, Perl | |
2751 | accepts C<__DIE__> and C<__WARN__> as valid signal hooks | |
2752 | ||
6df41af2 GS |
2753 | =item No such pipe open |
2754 | ||
2755 | (P) An error peculiar to VMS. The internal routine my_pclose() tried to | |
be771a83 GS |
2756 | close a pipe which hadn't been opened. This should have been caught |
2757 | earlier as an attempt to close an unopened filehandle. | |
6df41af2 | 2758 | |
a0d0e21e LW |
2759 | =item No such signal: SIG%s |
2760 | ||
be771a83 GS |
2761 | (W signal) You specified a signal name as a subscript to %SIG that was |
2762 | not recognized. Say C<kill -l> in your shell to see the valid signal | |
2763 | names on your system. | |
a0d0e21e LW |
2764 | |
2765 | =item Not a CODE reference | |
2766 | ||
2767 | (F) Perl was trying to evaluate a reference to a code value (that is, a | |
2768 | subroutine), but found a reference to something else instead. You can | |
be771a83 GS |
2769 | use the ref() function to find out what kind of ref it really was. See |
2770 | also L<perlref>. | |
a0d0e21e LW |
2771 | |
2772 | =item Not a format reference | |
2773 | ||
2774 | (F) I'm not sure how you managed to generate a reference to an anonymous | |
2775 | format, but this indicates you did, and that it didn't exist. | |
2776 | ||
2777 | =item Not a GLOB reference | |
2778 | ||
be771a83 GS |
2779 | (F) Perl was trying to evaluate a reference to a "typeglob" (that is, a |
2780 | symbol table entry that looks like C<*foo>), but found a reference to | |
2781 | something else instead. You can use the ref() function to find out what | |
2782 | kind of ref it really was. See L<perlref>. | |
a0d0e21e LW |
2783 | |
2784 | =item Not a HASH reference | |
2785 | ||
be771a83 GS |
2786 | (F) Perl was trying to evaluate a reference to a hash value, but found a |
2787 | reference to something else instead. You can use the ref() function to | |
2788 | find out what kind of ref it really was. See L<perlref>. | |
a0d0e21e | 2789 | |
6df41af2 GS |
2790 | =item Not an ARRAY reference |
2791 | ||
be771a83 GS |
2792 | (F) Perl was trying to evaluate a reference to an array value, but found |
2793 | a reference to something else instead. You can use the ref() function | |
2794 | to find out what kind of ref it really was. See L<perlref>. | |
6df41af2 | 2795 | |
a0d0e21e LW |
2796 | =item Not a perl script |
2797 | ||
2798 | (F) The setuid emulator requires that scripts have a well-formed #! line | |
2799 | even on machines that don't support the #! construct. The line must | |
2800 | mention perl. | |
2801 | ||
2802 | =item Not a SCALAR reference | |
2803 | ||
be771a83 GS |
2804 | (F) Perl was trying to evaluate a reference to a scalar value, but found |
2805 | a reference to something else instead. You can use the ref() function | |
2806 | to find out what kind of ref it really was. See L<perlref>. | |
a0d0e21e LW |
2807 | |
2808 | =item Not a subroutine reference | |
2809 | ||
2810 | (F) Perl was trying to evaluate a reference to a code value (that is, a | |
2811 | subroutine), but found a reference to something else instead. You can | |
be771a83 GS |
2812 | use the ref() function to find out what kind of ref it really was. See |
2813 | also L<perlref>. | |
a0d0e21e | 2814 | |
e7ea3e70 | 2815 | =item Not a subroutine reference in overload table |
a0d0e21e LW |
2816 | |
2817 | (F) An attempt was made to specify an entry in an overloading table that | |
8b1a09fc | 2818 | doesn't somehow point to a valid subroutine. See L<overload>. |
a0d0e21e | 2819 | |
a0d0e21e LW |
2820 | =item Not enough arguments for %s |
2821 | ||
2822 | (F) The function requires more arguments than you specified. | |
2823 | ||
6df41af2 GS |
2824 | =item Not enough format arguments |
2825 | ||
be771a83 GS |
2826 | (W syntax) A format specified more picture fields than the next line |
2827 | supplied. See L<perlform>. | |
6df41af2 GS |
2828 | |
2829 | =item %s: not found | |
2830 | ||
be771a83 GS |
2831 | (A) You've accidentally run your script through the Bourne shell instead |
2832 | of Perl. Check the #! line, or manually feed your script into Perl | |
2833 | yourself. | |
6df41af2 GS |
2834 | |
2835 | =item no UTC offset information; assuming local time is UTC | |
a0d0e21e | 2836 | |
6df41af2 GS |
2837 | (S) A warning peculiar to VMS. Perl was unable to find the local |
2838 | timezone offset, so it's assuming that local system time is equivalent | |
be771a83 GS |
2839 | to UTC. If it's not, define the logical name |
2840 | F<SYS$TIMEZONE_DIFFERENTIAL> to translate to the number of seconds which | |
2841 | need to be added to UTC to get local time. | |
a0d0e21e | 2842 | |
4ef2275c GA |
2843 | =item Non-string passed as bitmask |
2844 | ||
2845 | (W misc) A number has been passed as a bitmask argument to select(). | |
2846 | Use the vec() function to construct the file descriptor bitmasks for | |
2847 | select. See L<perlfunc/select> | |
2848 | ||
a0d0e21e LW |
2849 | =item Null filename used |
2850 | ||
be771a83 GS |
2851 | (F) You can't require the null filename, especially because on many |
2852 | machines that means the current directory! See L<perlfunc/require>. | |
a0d0e21e | 2853 | |
6df41af2 GS |
2854 | =item NULL OP IN RUN |
2855 | ||
be771a83 GS |
2856 | (P debugging) Some internal routine called run() with a null opcode |
2857 | pointer. | |
6df41af2 | 2858 | |
55497cff | 2859 | =item Null picture in formline |
2860 | ||
2861 | (F) The first argument to formline must be a valid format picture | |
2862 | specification. It was found to be empty, which probably means you | |
2863 | supplied it an uninitialized value. See L<perlform>. | |
2864 | ||
a0d0e21e LW |
2865 | =item Null realloc |
2866 | ||
2867 | (P) An attempt was made to realloc NULL. | |
2868 | ||
2869 | =item NULL regexp argument | |
2870 | ||
5f05dabc | 2871 | (P) The internal pattern matching routines blew it big time. |
a0d0e21e LW |
2872 | |
2873 | =item NULL regexp parameter | |
2874 | ||
2875 | (P) The internal pattern matching routines are out of their gourd. | |
2876 | ||
fc36a67e | 2877 | =item Number too long |
2878 | ||
be771a83 | 2879 | (F) Perl limits the representation of decimal numbers in programs to |
da75cd15 | 2880 | about 250 characters. You've exceeded that length. Future |
be771a83 GS |
2881 | versions of Perl are likely to eliminate this arbitrary limitation. In |
2882 | the meantime, try using scientific notation (e.g. "1e6" instead of | |
2883 | "1_000_000"). | |
fc36a67e | 2884 | |
6df41af2 GS |
2885 | =item Octal number in vector unsupported |
2886 | ||
be771a83 GS |
2887 | (F) Numbers with a leading C<0> are not currently allowed in vectors. |
2888 | The octal number interpretation of such numbers may be supported in a | |
2889 | future version. | |
6df41af2 | 2890 | |
252aa082 JH |
2891 | =item Octal number > 037777777777 non-portable |
2892 | ||
75b44862 | 2893 | (W portable) The octal number you specified is larger than 2**32-1 |
be771a83 GS |
2894 | (4294967295) and therefore non-portable between systems. See |
2895 | L<perlport> for more on portability concerns. | |
252aa082 JH |
2896 | |
2897 | See also L<perlport> for writing portable code. | |
2898 | ||
6ad11d81 JH |
2899 | =item Odd number of arguments for overload::constant |
2900 | ||
04a80ee0 RGS |
2901 | (W overload) The call to overload::constant contained an odd number of |
2902 | arguments. The arguments should come in pairs. | |
6ad11d81 | 2903 | |
b21befc1 MG |
2904 | =item Odd number of elements in anonymous hash |
2905 | ||
2906 | (W misc) You specified an odd number of elements to initialize a hash, | |
2907 | which is odd, because hashes come in key/value pairs. | |
2908 | ||
1930e939 | 2909 | =item Odd number of elements in hash assignment |
a0d0e21e | 2910 | |
be771a83 GS |
2911 | (W misc) You specified an odd number of elements to initialize a hash, |
2912 | which is odd, because hashes come in key/value pairs. | |
a0d0e21e | 2913 | |
bbce6d69 | 2914 | =item Offset outside string |
2915 | ||
42bc49da JH |
2916 | (F, W layer) You tried to do a read/write/send/recv/seek operation |
2917 | with an offset pointing outside the buffer. This is difficult to | |
f5a7294f JH |
2918 | imagine. The sole exceptions to this are that zero padding will |
2919 | take place when going past the end of the string when either | |
2920 | C<sysread()>ing a file, or when seeking past the end of a scalar opened | |
1a7a2554 MB |
2921 | for I/O (in anticipation of future reads and to imitate the behaviour |
2922 | with real files). | |
bbce6d69 | 2923 | |
c289d2f7 | 2924 | =item %s() on unopened %s |
2dd78f96 JH |
2925 | |
2926 | (W unopened) An I/O operation was attempted on a filehandle that was | |
2927 | never initialized. You need to do an open(), a sysopen(), or a socket() | |
2928 | call, or call a constructor from the FileHandle package. | |
2929 | ||
96ebfdd7 RK |
2930 | =item -%s on unopened filehandle %s |
2931 | ||
2932 | (W unopened) You tried to invoke a file test operator on a filehandle | |
2933 | that isn't open. Check your control flow. See also L<perlfunc/-X>. | |
2934 | ||
a0d0e21e LW |
2935 | =item oops: oopsAV |
2936 | ||
e476b1b5 | 2937 | (S internal) An internal warning that the grammar is screwed up. |
a0d0e21e LW |
2938 | |
2939 | =item oops: oopsHV | |
2940 | ||
e476b1b5 | 2941 | (S internal) An internal warning that the grammar is screwed up. |
a0d0e21e | 2942 | |
abc718f2 RGS |
2943 | =item Opening dirhandle %s also as a file |
2944 | ||
2945 | (W io deprecated) You used open() to associate a filehandle to | |
2946 | a symbol (glob or scalar) that already holds a dirhandle. | |
2947 | Although legal, this idiom might render your code confusing | |
2948 | and is deprecated. | |
2949 | ||
2950 | =item Opening filehandle %s also as a directory | |
2951 | ||
2952 | (W io deprecated) You used opendir() to associate a dirhandle to | |
2953 | a symbol (glob or scalar) that already holds a filehandle. | |
2954 | Although legal, this idiom might render your code confusing | |
2955 | and is deprecated. | |
2956 | ||
a0288114 | 2957 | =item Operation "%s": no method found, %s |
44a8e56a | 2958 | |
be771a83 GS |
2959 | (F) An attempt was made to perform an overloaded operation for which no |
2960 | handler was defined. While some handlers can be autogenerated in terms | |
2961 | of other handlers, there is no default handler for any operation, unless | |
2962 | C<fallback> overloading key is specified to be true. See L<overload>. | |
44a8e56a | 2963 | |
748a9306 LW |
2964 | =item Operator or semicolon missing before %s |
2965 | ||
be771a83 GS |
2966 | (S ambiguous) You used a variable or subroutine call where the parser |
2967 | was expecting an operator. The parser has assumed you really meant to | |
2968 | use an operator, but this is highly likely to be incorrect. For | |
2969 | example, if you say "*foo *foo" it will be interpreted as if you said | |
2970 | "*foo * 'foo'". | |
748a9306 | 2971 | |
6df41af2 GS |
2972 | =item "our" variable %s redeclared |
2973 | ||
be771a83 GS |
2974 | (W misc) You seem to have already declared the same global once before |
2975 | in the current lexical scope. | |
6df41af2 | 2976 | |
a80b8354 GS |
2977 | =item Out of memory! |
2978 | ||
2979 | (X) The malloc() function returned 0, indicating there was insufficient | |
be771a83 GS |
2980 | remaining memory (or virtual memory) to satisfy the request. Perl has |
2981 | no option but to exit immediately. | |
a80b8354 | 2982 | |
19a52907 JH |
2983 | At least in Unix you may be able to get past this by increasing your |
2984 | process datasize limits: in csh/tcsh use C<limit> and | |
2985 | C<limit datasize n> (where C<n> is the number of kilobytes) to check | |
2986 | the current limits and change them, and in ksh/bash/zsh use C<ulimit -a> | |
2987 | and C<ulimit -d n>, respectively. | |
2988 | ||
6d3b25aa RGS |
2989 | =item Out of memory during %s extend |
2990 | ||
2991 | (X) An attempt was made to extend an array, a list, or a string beyond | |
2992 | the largest possible memory allocation. | |
2993 | ||
6df41af2 | 2994 | =item Out of memory during "large" request for %s |
a0d0e21e | 2995 | |
6df41af2 GS |
2996 | (F) The malloc() function returned 0, indicating there was insufficient |
2997 | remaining memory (or virtual memory) to satisfy the request. However, | |
be771a83 GS |
2998 | the request was judged large enough (compile-time default is 64K), so a |
2999 | possibility to shut down by trapping this error is granted. | |
a0d0e21e | 3000 | |
1b979e0a | 3001 | =item Out of memory during request for %s |
a0d0e21e | 3002 | |
be771a83 GS |
3003 | (X|F) The malloc() function returned 0, indicating there was |
3004 | insufficient remaining memory (or virtual memory) to satisfy the | |
3005 | request. | |
eff9c6e2 CS |
3006 | |
3007 | The request was judged to be small, so the possibility to trap it | |
3008 | depends on the way perl was compiled. By default it is not trappable. | |
be771a83 GS |
3009 | However, if compiled for this, Perl may use the contents of C<$^M> as an |
3010 | emergency pool after die()ing with this message. In this case the error | |
b022d2d2 IZ |
3011 | is trappable I<once>, and the error message will include the line and file |
3012 | where the failed request happened. | |
55497cff | 3013 | |
1b979e0a IZ |
3014 | =item Out of memory during ridiculously large request |
3015 | ||
3016 | (F) You can't allocate more than 2^31+"small amount" bytes. This error | |
be771a83 GS |
3017 | is most likely to be caused by a typo in the Perl program. e.g., |
3018 | C<$arr[time]> instead of C<$arr[$time]>. | |
1b979e0a | 3019 | |
6df41af2 GS |
3020 | =item Out of memory for yacc stack |
3021 | ||
be771a83 GS |
3022 | (F) The yacc parser wanted to grow its stack so it could continue |
3023 | parsing, but realloc() wouldn't give it more memory, virtual or | |
3024 | otherwise. | |
6df41af2 | 3025 | |
28be1210 TH |
3026 | =item '.' outside of string in pack |
3027 | ||
3028 | (F) The argument to a '.' in your template tried to move the working | |
3029 | position to before the start of the packed string being built. | |
3030 | ||
49704364 | 3031 | =item '@' outside of string in unpack |
6df41af2 | 3032 | |
49704364 | 3033 | (F) You had a template that specified an absolute position outside |
6df41af2 GS |
3034 | the string being unpacked. See L<perlfunc/pack>. |
3035 | ||
f337b084 TH |
3036 | =item '@' outside of string with malformed UTF-8 in unpack |
3037 | ||
3038 | (F) You had a template that specified an absolute position outside | |
3039 | the string being unpacked. The string being unpacked was also invalid | |
3040 | UTF-8. See L<perlfunc/pack>. | |
3041 | ||
7cb0cfe6 BM |
3042 | =item Overloaded dereference did not return a reference |
3043 | ||
3044 | (F) An object with an overloaded dereference operator was dereferenced, | |
3045 | but the overloaded operation did not return a reference. See | |
3046 | L<overload>. | |
3047 | ||
3048 | =item Overloaded qr did not return a REGEXP | |
3049 | ||
3050 | (F) An object with a C<qr> overload was used as part of a match, but the | |
3051 | overloaded operation didn't return a compiled regexp. See L<overload>. | |
3052 | ||
6df41af2 GS |
3053 | =item %s package attribute may clash with future reserved word: %s |
3054 | ||
be771a83 GS |
3055 | (W reserved) A lowercase attribute name was used that had a |
3056 | package-specific handler. That name might have a meaning to Perl itself | |
3057 | some day, even though it doesn't yet. Perhaps you should use a | |
3058 | mixed-case attribute name, instead. See L<attributes>. | |
6df41af2 | 3059 | |
96ebfdd7 RK |
3060 | =item pack/unpack repeat count overflow |
3061 | ||
3062 | (F) You can't specify a repeat count so large that it overflows your | |
3063 | signed integers. See L<perlfunc/pack>. | |
3064 | ||
a0d0e21e LW |
3065 | =item page overflow |
3066 | ||
be771a83 GS |
3067 | (W io) A single call to write() produced more lines than can fit on a |
3068 | page. See L<perlform>. | |
a0d0e21e | 3069 | |
6df41af2 GS |
3070 | =item panic: %s |
3071 | ||
3072 | (P) An internal error. | |
3073 | ||
c99a1475 NC |
3074 | =item panic: attempt to call %s in %s |
3075 | ||
3076 | (P) One of the file test operators entered a code branch that calls | |
3077 | an ACL related-function, but that function is not available on this | |
3078 | platform. Earlier checks mean that it should not be possible to | |
3079 | enter this branch on this platform. | |
3080 | ||
a0d0e21e LW |
3081 | =item panic: ck_grep |
3082 | ||
3083 | (P) Failed an internal consistency check trying to compile a grep. | |
3084 | ||
3085 | =item panic: ck_split | |
3086 | ||
3087 | (P) Failed an internal consistency check trying to compile a split. | |
3088 | ||
3089 | =item panic: corrupt saved stack index | |
3090 | ||
be771a83 GS |
3091 | (P) The savestack was requested to restore more localized values than |
3092 | there are in the savestack. | |
a0d0e21e | 3093 | |
810b8aa5 GS |
3094 | =item panic: del_backref |
3095 | ||
3096 | (P) Failed an internal consistency check while trying to reset a weak | |
3097 | reference. | |
3098 | ||
7619c85e RG |
3099 | =item panic: Devel::DProf inconsistent subroutine return |
3100 | ||
3101 | (P) Devel::DProf called a subroutine that exited using goto(LABEL), | |
3102 | last(LABEL) or next(LABEL). Leaving that way a subroutine called from | |
3103 | an XSUB will lead very probably to a crash of the interpreter. This is | |
3104 | a bug that will hopefully one day get fixed. | |
3105 | ||
a0d0e21e LW |
3106 | =item panic: die %s |
3107 | ||
3108 | (P) We popped the context stack to an eval context, and then discovered | |
3109 | it wasn't an eval context. | |
3110 | ||
a0d0e21e LW |
3111 | =item panic: do_subst |
3112 | ||
be771a83 GS |
3113 | (P) The internal pp_subst() routine was called with invalid operational |
3114 | data. | |
a0d0e21e | 3115 | |
2269b42e | 3116 | =item panic: do_trans_%s |
a0d0e21e | 3117 | |
2269b42e | 3118 | (P) The internal do_trans routines were called with invalid operational |
be771a83 | 3119 | data. |
a0d0e21e | 3120 | |
b7f7fd0b NC |
3121 | =item panic: fold_constants JMPENV_PUSH returned %d |
3122 | ||
10203f38 | 3123 | (P) While attempting folding constants an exception other than an C<eval> |
b7f7fd0b NC |
3124 | failure was caught. |
3125 | ||
c635e13b | 3126 | =item panic: frexp |
3127 | ||
3128 | (P) The library function frexp() failed, making printf("%f") impossible. | |
3129 | ||
a0d0e21e LW |
3130 | =item panic: goto |
3131 | ||
3132 | (P) We popped the context stack to a context with the specified label, | |
3133 | and then discovered it wasn't a context we know how to do a goto in. | |
3134 | ||
23976bdd NC |
3135 | =item panic: hfreeentries failed to free hash |
3136 | ||
3137 | (P) The internal routine used to clear a hashes entries tried repeatedly, | |
3138 | but each time something added more entries to the hash. Most likely the hash | |
3139 | contains an object with a reference back to the hash and a destructor that | |
3140 | adds a new object to the hash. | |
3141 | ||
a0d0e21e LW |
3142 | =item panic: INTERPCASEMOD |
3143 | ||
3144 | (P) The lexer got into a bad state at a case modifier. | |
3145 | ||
3146 | =item panic: INTERPCONCAT | |
3147 | ||
3148 | (P) The lexer got into a bad state parsing a string with brackets. | |
3149 | ||
e446cec8 IZ |
3150 | =item panic: kid popen errno read |
3151 | ||
3152 | (F) forked child returned an incomprehensible message about its errno. | |
3153 | ||
a0d0e21e LW |
3154 | =item panic: last |
3155 | ||
3156 | (P) We popped the context stack to a block context, and then discovered | |
3157 | it wasn't a block context. | |
3158 | ||
3159 | =item panic: leave_scope clearsv | |
3160 | ||
be771a83 GS |
3161 | (P) A writable lexical variable became read-only somehow within the |
3162 | scope. | |
a0d0e21e LW |
3163 | |
3164 | =item panic: leave_scope inconsistency | |
3165 | ||
3166 | (P) The savestack probably got out of sync. At least, there was an | |
3167 | invalid enum on the top of it. | |
3168 | ||
810b8aa5 GS |
3169 | =item panic: magic_killbackrefs |
3170 | ||
3171 | (P) Failed an internal consistency check while trying to reset all weak | |
3172 | references to an object. | |
3173 | ||
6df41af2 GS |
3174 | =item panic: malloc |
3175 | ||
3176 | (P) Something requested a negative number of bytes of malloc. | |
3177 | ||
27d5b266 JH |
3178 | =item panic: memory wrap |
3179 | ||
3180 | (P) Something tried to allocate more memory than possible. | |
3181 | ||
a0d0e21e LW |
3182 | =item panic: pad_alloc |
3183 | ||
3184 | (P) The compiler got confused about which scratch pad it was allocating | |
3185 | and freeing temporaries and lexicals from. | |
3186 | ||
3187 | =item panic: pad_free curpad | |
3188 | ||
3189 | (P) The compiler got confused about which scratch pad it was allocating | |
3190 | and freeing temporaries and lexicals from. | |
3191 | ||
3192 | =item panic: pad_free po | |
3193 | ||
3194 | (P) An invalid scratch pad offset was detected internally. | |
3195 | ||
3196 | =item panic: pad_reset curpad | |
3197 | ||
3198 | (P) The compiler got confused about which scratch pad it was allocating | |
3199 | and freeing temporaries and lexicals from. | |
3200 | ||
3201 | =item panic: pad_sv po | |
3202 | ||
3203 | (P) An invalid scratch pad offset was detected internally. | |
3204 | ||
3205 | =item panic: pad_swipe curpad | |
3206 | ||
3207 | (P) The compiler got confused about which scratch pad it was allocating | |
3208 | and freeing temporaries and lexicals from. | |
3209 | ||
3210 | =item panic: pad_swipe po | |
3211 | ||
3212 | (P) An invalid scratch pad offset was detected internally. | |
3213 | ||
3214 | =item panic: pp_iter | |
3215 | ||
3216 | (P) The foreach iterator got called in a non-loop context frame. | |
3217 | ||
96ebfdd7 RK |
3218 | =item panic: pp_match%s |
3219 | ||
3220 | (P) The internal pp_match() routine was called with invalid operational | |
3221 | data. | |
3222 | ||
2269b42e JH |
3223 | =item panic: pp_split |
3224 | ||
3225 | (P) Something terrible went wrong in setting up for the split. | |
3226 | ||
a0d0e21e LW |
3227 | =item panic: realloc |
3228 | ||
3229 | (P) Something requested a negative number of bytes of realloc. | |
3230 | ||
3231 | =item panic: restartop | |
3232 | ||
3233 | (P) Some internal routine requested a goto (or something like it), and | |
3234 | didn't supply the destination. | |
3235 | ||
3236 | =item panic: return | |
3237 | ||
3238 | (P) We popped the context stack to a subroutine or eval context, and | |
3239 | then discovered it wasn't a subroutine or eval context. | |
3240 | ||
3241 | =item panic: scan_num | |
3242 | ||
3243 | (P) scan_num() got called on something that wasn't a number. | |
3244 | ||
6c65d5f9 NC |
3245 | =item panic: sv_chop %s |
3246 | ||
3247 | (P) The sv_chop() routine was passed a position that is not within the | |
3248 | scalar's string buffer. | |
3249 | ||
a0d0e21e LW |
3250 | =item panic: sv_insert |
3251 | ||
3252 | (P) The sv_insert() routine was told to remove more string than there | |
3253 | was string. | |
3254 | ||
3255 | =item panic: top_env | |
3256 | ||
6224f72b | 3257 | (P) The compiler attempted to do a goto, or something weird like that. |
a0d0e21e | 3258 | |
65bca31a NC |
3259 | =item panic: unimplemented op %s (#%d) called |
3260 | ||
3261 | (P) The compiler is screwed up and attempted to use an op that isn't permitted | |
3262 | at run time. | |
3263 | ||
dea0fc0b JH |
3264 | =item panic: utf16_to_utf8: odd bytelen |
3265 | ||
3266 | (P) Something tried to call utf16_to_utf8 with an odd (as opposed | |
64977eb6 | 3267 | to even) byte length. |
dea0fc0b | 3268 | |
e0ea5e2d NC |
3269 | =item panic: utf16_to_utf8_reversed: odd bytelen |
3270 | ||
3271 | (P) Something tried to call utf16_to_utf8_reversed with an odd (as opposed | |
3272 | to even) byte length. | |
3273 | ||
2f7da168 RK |
3274 | =item panic: yylex |
3275 | ||
3276 | (P) The lexer got into a bad state while processing a case modifier. | |
3277 | ||
1a147d38 YO |
3278 | =item Pattern subroutine nesting without pos change exceeded limit in regex; marked by <-- HERE in m/%s/ |
3279 | ||
3280 | (F) You used a pattern that uses too many nested subpattern calls without | |
3281 | consuming any text. Restructure the pattern so text is consumed before the | |
3282 | nesting limit is exceeded. | |
3283 | ||
3284 | The <-- HERE shows in the regular expression about where the problem was | |
3285 | discovered. | |
3286 | ||
7b8d334a | 3287 | =item Parentheses missing around "%s" list |
a0d0e21e | 3288 | |
e476b1b5 | 3289 | (W parenthesis) You said something like |
a0d0e21e LW |
3290 | |
3291 | my $foo, $bar = @_; | |
3292 | ||
3293 | when you meant | |
3294 | ||
3295 | my ($foo, $bar) = @_; | |
3296 | ||
30c282f6 | 3297 | Remember that "my", "our", "local" and "state" bind tighter than comma. |
a0d0e21e | 3298 | |
96ebfdd7 RK |
3299 | =item C<-p> destination: %s |
3300 | ||
3301 | (F) An error occurred during the implicit output invoked by the C<-p> | |
3302 | command-line switch. (This output goes to STDOUT unless you've | |
3303 | redirected it with select().) | |
3304 | ||
3305 | =item (perhaps you forgot to load "%s"?) | |
3306 | ||
3307 | (F) This is an educated guess made in conjunction with the message | |
3308 | "Can't locate object method \"%s\" via package \"%s\"". It often means | |
3309 | that a method requires a package that has not been loaded. | |
3310 | ||
1109a392 MHM |
3311 | =item Perl_my_%s() not available |
3312 | ||
3313 | (F) Your platform has very uncommon byte-order and integer size, | |
3314 | so it was not possible to set up some or all fixed-width byte-order | |
3315 | conversion functions. This is only a problem when you're using the | |
3316 | '<' or '>' modifiers in (un)pack templates. See L<perlfunc/pack>. | |
3317 | ||
879d0c72 NC |
3318 | =item Perl_pmflag() is deprecated, and will be removed from the XS API |
3319 | ||
3320 | (D deprecated) XS code called the C function C<Perl_pmflag>. This was part of | |
3321 | Perl's listed public API for extending or embedding the perl interpreter. It has | |
3322 | now been removed from the public API, and will be removed in a future release, | |
3323 | hence XS code should be re-written not to use it. | |
3324 | ||
6d3b25aa RGS |
3325 | =item Perl %s required--this is only version %s, stopped |
3326 | ||
3327 | (F) The module in question uses features of a version of Perl more | |
3328 | recent than the currently running version. How long has it been since | |
3329 | you upgraded, anyway? See L<perlfunc/require>. | |
3330 | ||
6df41af2 GS |
3331 | =item PERL_SH_DIR too long |
3332 | ||
3333 | (F) An error peculiar to OS/2. PERL_SH_DIR is the directory to find the | |
fecfaeb8 | 3334 | C<sh>-shell in. See "PERL_SH_DIR" in L<perlos2>. |
6df41af2 | 3335 | |
96ebfdd7 RK |
3336 | =item PERL_SIGNALS illegal: "%s" |
3337 | ||
3338 | See L<perlrun/PERL_SIGNALS> for legal values. | |
3339 | ||
6df41af2 GS |
3340 | =item perl: warning: Setting locale failed. |
3341 | ||
3342 | (S) The whole warning message will look something like: | |
3343 | ||
3344 | perl: warning: Setting locale failed. | |
3345 | perl: warning: Please check that your locale settings: | |
3346 | LC_ALL = "En_US", | |
3347 | LANG = (unset) | |
3348 | are supported and installed on your system. | |
3349 | perl: warning: Falling back to the standard locale ("C"). | |
3350 | ||
3351 | Exactly what were the failed locale settings varies. In the above the | |
3352 | settings were that the LC_ALL was "En_US" and the LANG had no value. | |
0ea6b70f JH |
3353 | This error means that Perl detected that you and/or your operating |
3354 | system supplier and/or system administrator have set up the so-called | |
3355 | locale system but Perl could not use those settings. This was not | |
3356 | dead serious, fortunately: there is a "default locale" called "C" that | |
3357 | Perl can and will use, the script will be run. Before you really fix | |
3358 | the problem, however, you will get the same error message each time | |
3359 | you run Perl. How to really fix the problem can be found in | |
3360 | L<perllocale> section B<LOCALE PROBLEMS>. | |
6df41af2 | 3361 | |
bd3fa61c | 3362 | =item pid %x not a child |
748a9306 | 3363 | |
be771a83 GS |
3364 | (W exec) A warning peculiar to VMS. Waitpid() was asked to wait for a |
3365 | process which isn't a subprocess of the current process. While this is | |
3366 | fine from VMS' perspective, it's probably not what you intended. | |
748a9306 | 3367 | |
49704364 | 3368 | =item 'P' must have an explicit size in unpack |
3bf38418 WL |
3369 | |
3370 | (F) The unpack format P must have an explicit size, not "*". | |
3371 | ||
96ebfdd7 RK |
3372 | =item POSIX class [:%s:] unknown in regex; marked by <-- HERE in m/%s/ |
3373 | ||
3374 | (F) The class in the character class [: :] syntax is unknown. The <-- HERE | |
3375 | shows in the regular expression about where the problem was discovered. | |
3376 | Note that the POSIX character classes do B<not> have the C<is> prefix | |
3377 | the corresponding C interfaces have: in other words, it's C<[[:print:]]>, | |
3378 | not C<isprint>. See L<perlre>. | |
3379 | ||
3380 | =item POSIX getpgrp can't take an argument | |
3381 | ||
3382 | (F) Your system has POSIX getpgrp(), which takes no argument, unlike | |
3383 | the BSD version, which takes a pid. | |
3384 | ||
49704364 | 3385 | =item POSIX syntax [%s] belongs inside character classes in regex; marked by <-- HERE in m/%s/ |
b45f050a | 3386 | |
9a0b3859 | 3387 | (W regexp) The character class constructs [: :], [= =], and [. .] go |
7253e4e3 RK |
3388 | I<inside> character classes, the [] are part of the construct, for example: |
3389 | /[012[:alpha:]345]/. Note that [= =] and [. .] are not currently | |
3390 | implemented; they are simply placeholders for future extensions and will | |
3391 | cause fatal errors. The <-- HERE shows in the regular expression about | |
3392 | where the problem was discovered. See L<perlre>. | |
b45f050a | 3393 | |
49704364 | 3394 | =item POSIX syntax [. .] is reserved for future extensions in regex; marked by <-- HERE in m/%s/ |
b45f050a JF |
3395 | |
3396 | (F regexp) Within regular expression character classes ([]) the syntax | |
7253e4e3 RK |
3397 | beginning with "[." and ending with ".]" is reserved for future extensions. |
3398 | If you need to represent those character sequences inside a regular | |
3399 | expression character class, just quote the square brackets with the | |
3400 | backslash: "\[." and ".\]". The <-- HERE shows in the regular expression | |
3401 | about where the problem was discovered. See L<perlre>. | |
b45f050a | 3402 | |
49704364 | 3403 | =item POSIX syntax [= =] is reserved for future extensions in regex; marked by <-- HERE in m/%s/ |
b45f050a | 3404 | |
7253e4e3 RK |
3405 | (F) Within regular expression character classes ([]) the syntax beginning |
3406 | with "[=" and ending with "=]" is reserved for future extensions. If you | |
3407 | need to represent those character sequences inside a regular expression | |
3408 | character class, just quote the square brackets with the backslash: "\[=" | |
3409 | and "=\]". The <-- HERE shows in the regular expression about where the | |
3410 | problem was discovered. See L<perlre>. | |
b45f050a | 3411 | |
bbce6d69 | 3412 | =item Possible attempt to put comments in qw() list |
3413 | ||
e476b1b5 | 3414 | (W qw) qw() lists contain items separated by whitespace; as with literal |
75b44862 | 3415 | strings, comment characters are not ignored, but are instead treated as |
be771a83 GS |
3416 | literal data. (You may have used different delimiters than the |
3417 | parentheses shown here; braces are also frequently used.) | |
bbce6d69 | 3418 | |
774d564b | 3419 | You probably wrote something like this: |
3420 | ||
54310121 | 3421 | @list = qw( |
774d564b | 3422 | a # a comment |
bbce6d69 | 3423 | b # another comment |
774d564b | 3424 | ); |
bbce6d69 | 3425 | |
3426 | when you should have written this: | |
3427 | ||
774d564b | 3428 | @list = qw( |
54310121 | 3429 | a |
3430 | b | |
774d564b | 3431 | ); |
3432 | ||
3433 | If you really want comments, build your list the | |
3434 | old-fashioned way, with quotes and commas: | |
3435 | ||
3436 | @list = ( | |
3437 | 'a', # a comment | |
3438 | 'b', # another comment | |
3439 | ); | |
bbce6d69 | 3440 | |
3441 | =item Possible attempt to separate words with commas | |
3442 | ||
be771a83 GS |
3443 | (W qw) qw() lists contain items separated by whitespace; therefore |
3444 | commas aren't needed to separate the items. (You may have used | |
3445 | different delimiters than the parentheses shown here; braces are also | |
3446 | frequently used.) | |
bbce6d69 | 3447 | |
54310121 | 3448 | You probably wrote something like this: |
bbce6d69 | 3449 | |
774d564b | 3450 | qw! a, b, c !; |
3451 | ||
3452 | which puts literal commas into some of the list items. Write it without | |
3453 | commas if you don't want them to appear in your data: | |
bbce6d69 | 3454 | |
774d564b | 3455 | qw! a b c !; |
bbce6d69 | 3456 | |
a0d0e21e LW |
3457 | =item Possible memory corruption: %s overflowed 3rd argument |
3458 | ||
3459 | (F) An ioctl() or fcntl() returned more than Perl was bargaining for. | |
3460 | Perl guesses a reasonable buffer size, but puts a sentinel byte at the | |
3461 | end of the buffer just in case. This sentinel byte got clobbered, and | |
3462 | Perl assumes that memory is now corrupted. See L<perlfunc/ioctl>. | |
3463 | ||
276b2a0c RGS |
3464 | =item Possible precedence problem on bitwise %c operator |
3465 | ||
3466 | (W precedence) Your program uses a bitwise logical operator in conjunction | |
3467 | with a numeric comparison operator, like this : | |
3468 | ||
3469 | if ($x & $y == 0) { ... } | |
3470 | ||
3471 | This expression is actually equivalent to C<$x & ($y == 0)>, due to the | |
3472 | higher precedence of C<==>. This is probably not what you want. (If you | |
96a925ab YST |
3473 | really meant to write this, disable the warning, or, better, put the |
3474 | parentheses explicitly and write C<$x & ($y == 0)>). | |
276b2a0c | 3475 | |
18623440 PS |
3476 | =item Possible unintended interpolation of %s in string |
3477 | ||
3478 | (W ambiguous) You said something like `@foo' in a double-quoted string | |
32b0a12e AMS |
3479 | but there was no array C<@foo> in scope at the time. If you wanted a |
3480 | literal @foo, then write it as \@foo; otherwise find out what happened | |
3481 | to the array you apparently lost track of. | |
18623440 | 3482 | |
77772344 B |
3483 | =item Possible unintended interpolation of $\ in regex |
3484 | ||
3485 | (W ambiguous) You said something like C<m/$\/> in a regex. | |
3486 | The regex C<m/foo$\s+bar/m> translates to: match the word 'foo', the output | |
8ddb446c | 3487 | record separator (see L<perlvar/$\>) and the letter 's' (one time or more) |
77772344 B |
3488 | followed by the word 'bar'. |
3489 | ||
3490 | If this is what you intended then you can silence the warning by using | |
3491 | C<m/${\}/> (for example: C<m/foo${\}s+bar/>). | |
3492 | ||
3493 | If instead you intended to match the word 'foo' at the end of the line | |
3494 | followed by whitespace and the word 'bar' on the next line then you can use | |
3495 | C<m/$(?)\/> (for example: C<m/foo$(?)\s+bar/>). | |
3496 | ||
a0d0e21e LW |
3497 | =item Precedence problem: open %s should be open(%s) |
3498 | ||
e476b1b5 | 3499 | (S precedence) The old irregular construct |
cb1a09d0 | 3500 | |
a0d0e21e LW |
3501 | open FOO || die; |
3502 | ||
3503 | is now misinterpreted as | |
3504 | ||
3505 | open(FOO || die); | |
3506 | ||
be771a83 GS |
3507 | because of the strict regularization of Perl 5's grammar into unary and |
3508 | list operators. (The old open was a little of both.) You must put | |
3509 | parentheses around the filehandle, or use the new "or" operator instead | |
3510 | of "||". | |
a0d0e21e | 3511 | |
3cdd684c TP |
3512 | =item Premature end of script headers |
3513 | ||
3514 | See Server error. | |
3515 | ||
6df41af2 GS |
3516 | =item printf() on closed filehandle %s |
3517 | ||
be771a83 | 3518 | (W closed) The filehandle you're writing to got itself closed sometime |
c289d2f7 | 3519 | before now. Check your control flow. |
6df41af2 | 3520 | |
9a7dcd9c | 3521 | =item print() on closed filehandle %s |
a0d0e21e | 3522 | |
be771a83 | 3523 | (W closed) The filehandle you're printing on got itself closed sometime |
c289d2f7 | 3524 | before now. Check your control flow. |
a0d0e21e | 3525 | |
6df41af2 | 3526 | =item Process terminated by SIG%s |
a0d0e21e | 3527 | |
6df41af2 GS |
3528 | (W) This is a standard message issued by OS/2 applications, while *nix |
3529 | applications die in silence. It is considered a feature of the OS/2 | |
3530 | port. One can easily disable this by appropriate sighandlers, see | |
3531 | L<perlipc/"Signals">. See also "Process terminated by SIGTERM/SIGINT" | |
fecfaeb8 | 3532 | in L<perlos2>. |
a0d0e21e | 3533 | |
327323c1 RGS |
3534 | =item Prototype after '%c' for %s : %s |
3535 | ||
3536 | (W syntax) A character follows % or @ in a prototype. This is useless, | |
3537 | since % and @ gobble the rest of the subroutine arguments. | |
3538 | ||
3fe9a6f1 | 3539 | =item Prototype mismatch: %s vs %s |
4633a7c4 | 3540 | |
9a0b3859 | 3541 | (S prototype) The subroutine being declared or defined had previously been |
be771a83 | 3542 | declared or defined with a different function prototype. |
4633a7c4 | 3543 | |
ed9aa3b7 SG |
3544 | =item Prototype not terminated |
3545 | ||
2a6fd447 | 3546 | (F) You've omitted the closing parenthesis in a function prototype |
ed9aa3b7 SG |
3547 | definition. |
3548 | ||
96ebfdd7 RK |
3549 | =item Quantifier follows nothing in regex; marked by <-- HERE in m/%s/ |
3550 | ||
3551 | (F) You started a regular expression with a quantifier. Backslash it if you | |
3552 | meant it literally. The <-- HERE shows in the regular expression about | |
3553 | where the problem was discovered. See L<perlre>. | |
3554 | ||
49704364 | 3555 | =item Quantifier in {,} bigger than %d in regex; marked by <-- HERE in m/%s/ |
9baa0206 | 3556 | |
b45f050a | 3557 | (F) There is currently a limit to the size of the min and max values of the |
7253e4e3 | 3558 | {min,max} construct. The <-- HERE shows in the regular expression about where |
b45f050a | 3559 | the problem was discovered. See L<perlre>. |
9baa0206 | 3560 | |
49704364 | 3561 | =item Quantifier unexpected on zero-length expression; marked by <-- HERE in m/%s/ |
9baa0206 | 3562 | |
b45f050a JF |
3563 | (W regexp) You applied a regular expression quantifier in a place where |
3564 | it makes no sense, such as on a zero-width assertion. Try putting the | |
3565 | quantifier inside the assertion instead. For example, the way to match | |
3566 | "abc" provided that it is followed by three repetitions of "xyz" is | |
3567 | C</abc(?=(?:xyz){3})/>, not C</abc(?=xyz){3}/>. | |
9baa0206 | 3568 | |
7253e4e3 RK |
3569 | The <-- HERE shows in the regular expression about where the problem was |
3570 | discovered. | |
3571 | ||
89ea2908 GA |
3572 | =item Range iterator outside integer range |
3573 | ||
3574 | (F) One (or both) of the numeric arguments to the range operator ".." | |
3575 | are outside the range which can be represented by integers internally. | |
be771a83 GS |
3576 | One possible workaround is to force Perl to use magical string increment |
3577 | by prepending "0" to your numbers. | |
89ea2908 | 3578 | |
3b7fbd4a SP |
3579 | =item readdir() attempted on invalid dirhandle %s |
3580 | ||
1a147d38 | 3581 | (W io) The dirhandle you're reading from is either closed or not really |
3b7fbd4a SP |
3582 | a dirhandle. Check your control flow. |
3583 | ||
96ebfdd7 RK |
3584 | =item readline() on closed filehandle %s |
3585 | ||
3586 | (W closed) The filehandle you're reading from got itself closed sometime | |
3587 | before now. Check your control flow. | |
3588 | ||
b5fe5ca2 SR |
3589 | =item read() on closed filehandle %s |
3590 | ||
3591 | (W closed) You tried to read from a closed filehandle. | |
3592 | ||
3593 | =item read() on unopened filehandle %s | |
3594 | ||
3595 | (W unopened) You tried to read from a filehandle that was never opened. | |
3596 | ||
6df41af2 GS |
3597 | =item Reallocation too large: %lx |
3598 | ||
3599 | (F) You can't allocate more than 64K on an MS-DOS machine. | |
3600 | ||
4ad56ec9 IZ |
3601 | =item realloc() of freed memory ignored |
3602 | ||
be771a83 GS |
3603 | (S malloc) An internal routine called realloc() on something that had |
3604 | already been freed. | |
4ad56ec9 | 3605 | |
a0d0e21e LW |
3606 | =item Recompile perl with B<-D>DEBUGGING to use B<-D> switch |
3607 | ||
be771a83 GS |
3608 | (F debugging) You can't use the B<-D> option unless the code to produce |
3609 | the desired output is compiled into Perl, which entails some overhead, | |
a0d0e21e LW |
3610 | which is why it's currently left out of your copy. |
3611 | ||
3e0ccd42 | 3612 | =item Recursive inheritance detected in package '%s' |
a0d0e21e | 3613 | |
2c7d6b9c RGS |
3614 | (F) While calculating the method resolution order (MRO) of a package, Perl |
3615 | believes it found an infinite loop in the C<@ISA> hierarchy. This is a | |
3616 | crude check that bails out after 100 levels of C<@ISA> depth. | |
a0d0e21e | 3617 | |
7a4340ed | 3618 | =item Recursive inheritance detected while looking for method %s |
3e0ccd42 | 3619 | |
be771a83 GS |
3620 | (F) More than 100 levels of inheritance were encountered while invoking |
3621 | a method. Probably indicates an unintended loop in your inheritance | |
3622 | hierarchy. | |
3e0ccd42 | 3623 | |
1930e939 TP |
3624 | =item Reference found where even-sized list expected |
3625 | ||
be771a83 GS |
3626 | (W misc) You gave a single reference where Perl was expecting a list |
3627 | with an even number of elements (for assignment to a hash). This usually | |
3628 | means that you used the anon hash constructor when you meant to use | |
3629 | parens. In any case, a hash requires key/value B<pairs>. | |
7b8d334a GS |
3630 | |
3631 | %hash = { one => 1, two => 2, }; # WRONG | |
3632 | %hash = [ qw/ an anon array / ]; # WRONG | |
3633 | %hash = ( one => 1, two => 2, ); # right | |
3634 | %hash = qw( one 1 two 2 ); # also fine | |
3635 | ||
810b8aa5 GS |
3636 | =item Reference is already weak |
3637 | ||
e476b1b5 | 3638 | (W misc) You have attempted to weaken a reference that is already weak. |
810b8aa5 GS |
3639 | Doing so has no effect. |
3640 | ||
a0d0e21e LW |
3641 | =item Reference miscount in sv_replace() |
3642 | ||
be771a83 GS |
3643 | (W internal) The internal sv_replace() function was handed a new SV with |
3644 | a reference count of other than 1. | |
a0d0e21e | 3645 | |
b72d83b2 RGS |
3646 | =item Reference to invalid group 0 |
3647 | ||
3648 | (F) You used C<\g0> or similar in a regular expression. You may refer to | |
3649 | capturing parentheses only with strictly positive integers (normal | |
353c6505 | 3650 | backreferences) or with strictly negative integers (relative |
b72d83b2 RGS |
3651 | backreferences), but using 0 does not make sense. |
3652 | ||
49704364 | 3653 | =item Reference to nonexistent group in regex; marked by <-- HERE in m/%s/ |
b45f050a JF |
3654 | |
3655 | (F) You used something like C<\7> in your regular expression, but there are | |
3656 | not at least seven sets of capturing parentheses in the expression. If you | |
3657 | wanted to have the character with value 7 inserted into the regular expression, | |
3658 | prepend a zero to make the number at least two digits: C<\07> | |
9baa0206 | 3659 | |
7253e4e3 | 3660 | The <-- HERE shows in the regular expression about where the problem was |
b45f050a | 3661 | discovered. |
9baa0206 | 3662 | |
c74340f9 YO |
3663 | =item Reference to nonexistent or unclosed group in regex; marked by <-- HERE in m/%s/ |
3664 | ||
2bf803e2 | 3665 | (F) You used something like C<\g{-7}> in your regular expression, but there are |
c74340f9 | 3666 | not at least seven sets of closed capturing parentheses in the expression before |
2bf803e2 | 3667 | where the C<\g{-7}> was located. |
c74340f9 YO |
3668 | |
3669 | The <-- HERE shows in the regular expression about where the problem was | |
3670 | discovered. | |
3671 | ||
1a147d38 YO |
3672 | =item Reference to nonexistent named group in regex; marked by <-- HERE in m/%s/ |
3673 | ||
3674 | (F) You used something like C<\k'NAME'> or C<< \k<NAME> >> in your regular | |
3675 | expression, but there is no corresponding named capturing parentheses such | |
3676 | as C<(?'NAME'...)> or C<(?<NAME>...). Check if the name has been spelled | |
3677 | correctly both in the backreference and the declaration. | |
3678 | ||
3679 | The <-- HERE shows in the regular expression about where the problem was | |
3680 | discovered. | |
3681 | ||
3682 | =item (?(DEFINE)....) does not allow branches in regex; marked by <-- HERE in m/%s/ | |
3683 | ||
3684 | (F) You used something like C<(?(DEFINE)...|..)> which is illegal. The | |
3685 | most likely cause of this error is that you left out a parenthesis inside | |
3686 | of the C<....> part. | |
3687 | ||
3688 | The <-- HERE shows in the regular expression about where the problem was | |
3689 | discovered. | |
3690 | ||
a0d0e21e LW |
3691 | =item regexp memory corruption |
3692 | ||
3693 | (P) The regular expression engine got confused by what the regular | |
3694 | expression compiler gave it. | |
3695 | ||
b45f050a | 3696 | =item Regexp out of space |
a0d0e21e | 3697 | |
be771a83 GS |
3698 | (P) A "can't happen" error, because safemalloc() should have caught it |
3699 | earlier. | |
a0d0e21e | 3700 | |
a1b95068 WL |
3701 | =item Repeated format line will never terminate (~~ and @# incompatible) |
3702 | ||
d7f8936a | 3703 | (F) Your format contains the ~~ repeat-until-blank sequence and a |
a1b95068 WL |
3704 | numeric field that will never go blank so that the repetition never |
3705 | terminates. You might use ^# instead. See L<perlform>. | |
3706 | ||
b08e453b RB |
3707 | =item Replacement list is longer than search list |
3708 | ||
3709 | (W misc) You have used a replacement list that is longer than the | |
3710 | search list. So the additional elements in the replacement list | |
3711 | are meaningless. | |
3712 | ||
a0d0e21e LW |
3713 | =item Reversed %s= operator |
3714 | ||
be771a83 GS |
3715 | (W syntax) You wrote your assignment operator backwards. The = must |
3716 | always comes last, to avoid ambiguity with subsequent unary operators. | |
a0d0e21e | 3717 | |
abc7ecad SP |
3718 | =item rewinddir() attempted on invalid dirhandle %s |
3719 | ||
3720 | (W io) The dirhandle you tried to do a rewinddir() on is either closed or not | |
3721 | really a dirhandle. Check your control flow. | |
3722 | ||
96ebfdd7 RK |
3723 | =item Scalars leaked: %d |
3724 | ||
3725 | (P) Something went wrong in Perl's internal bookkeeping of scalars: | |
3726 | not all scalar variables were deallocated by the time Perl exited. | |
3727 | What this usually indicates is a memory leak, which is of course bad, | |
3728 | especially if the Perl program is intended to be long-running. | |
3729 | ||
a0d0e21e LW |
3730 | =item Scalar value @%s[%s] better written as $%s[%s] |
3731 | ||
be771a83 GS |
3732 | (W syntax) You've used an array slice (indicated by @) to select a |
3733 | single element of an array. Generally it's better to ask for a scalar | |
3734 | value (indicated by $). The difference is that C<$foo[&bar]> always | |
3735 | behaves like a scalar, both when assigning to it and when evaluating its | |
3736 | argument, while C<@foo[&bar]> behaves like a list when you assign to it, | |
3737 | and provides a list context to its subscript, which can do weird things | |
3738 | if you're expecting only one subscript. | |
a0d0e21e | 3739 | |
748a9306 | 3740 | On the other hand, if you were actually hoping to treat the array |
5f05dabc | 3741 | element as a list, you need to look into how references work, because |
748a9306 LW |
3742 | Perl will not magically convert between scalars and lists for you. See |
3743 | L<perlref>. | |
3744 | ||
a6006777 | 3745 | =item Scalar value @%s{%s} better written as $%s{%s} |
3746 | ||
75b44862 | 3747 | (W syntax) You've used a hash slice (indicated by @) to select a single |
be771a83 GS |
3748 | element of a hash. Generally it's better to ask for a scalar value |
3749 | (indicated by $). The difference is that C<$foo{&bar}> always behaves | |
3750 | like a scalar, both when assigning to it and when evaluating its | |
3751 | argument, while C<@foo{&bar}> behaves like a list when you assign to it, | |
3752 | and provides a list context to its subscript, which can do weird things | |
3753 | if you're expecting only one subscript. | |
3754 | ||
3755 | On the other hand, if you were actually hoping to treat the hash element | |
3756 | as a list, you need to look into how references work, because Perl will | |
3757 | not magically convert between scalars and lists for you. See | |
a6006777 | 3758 | L<perlref>. |
3759 | ||
a0d0e21e LW |
3760 | =item Search pattern not terminated |
3761 | ||
3762 | (F) The lexer couldn't find the final delimiter of a // or m{} | |
3763 | construct. Remember that bracketing delimiters count nesting level. | |
fb73857a | 3764 | Missing the leading C<$> from a variable C<$m> may cause this error. |
a0d0e21e | 3765 | |
0cb1bcd7 | 3766 | Note that since Perl 5.9.0 a // can also be the I<defined-or> |
5d9c98cd JH |
3767 | construct, not just the empty search pattern. Therefore code written |
3768 | in Perl 5.9.0 or later that uses the // as the I<defined-or> can be | |
3769 | misparsed by pre-5.9.0 Perls as a non-terminated search pattern. | |
3770 | ||
25c09cbf SF |
3771 | =item Search pattern not terminated or ternary operator parsed as search pattern |
3772 | ||
3773 | (F) The lexer couldn't find the final delimiter of a C<?PATTERN?> | |
3774 | construct. | |
3775 | ||
3776 | The question mark is also used as part of the ternary operator (as in | |
3777 | C<foo ? 0 : 1>) leading to some ambiguous constructions being wrongly | |
3778 | parsed. One way to disambiguate the parsing is to put parentheses around | |
3779 | the conditional expression, i.e. C<(foo) ? 0 : 1>. | |
3780 | ||
9ddeeac9 | 3781 | =item %sseek() on unopened filehandle |
a0d0e21e | 3782 | |
be771a83 GS |
3783 | (W unopened) You tried to use the seek() or sysseek() function on a |
3784 | filehandle that was either never opened or has since been closed. | |
a0d0e21e | 3785 | |
abc7ecad SP |
3786 | =item seekdir() attempted on invalid dirhandle %s |
3787 | ||
3788 | (W io) The dirhandle you are doing a seekdir() on is either closed or not | |
3789 | really a dirhandle. Check your control flow. | |
3790 | ||
a0d0e21e LW |
3791 | =item select not implemented |
3792 | ||
3793 | (F) This machine doesn't implement the select() system call. | |
3794 | ||
ae21d580 | 3795 | =item Self-ties of arrays and hashes are not supported |
68a4a7e4 | 3796 | |
ae21d580 JH |
3797 | (F) Self-ties are of arrays and hashes are not supported in |
3798 | the current implementation. | |
68a4a7e4 | 3799 | |
6df41af2 | 3800 | =item Semicolon seems to be missing |
a0d0e21e | 3801 | |
75b44862 GS |
3802 | (W semicolon) A nearby syntax error was probably caused by a missing |
3803 | semicolon, or possibly some other missing operator, such as a comma. | |
a0d0e21e LW |
3804 | |
3805 | =item semi-panic: attempt to dup freed string | |
3806 | ||
be771a83 GS |
3807 | (S internal) The internal newSVsv() routine was called to duplicate a |
3808 | scalar that had previously been marked as free. | |
a0d0e21e | 3809 | |
6df41af2 | 3810 | =item sem%s not implemented |
a0d0e21e | 3811 | |
6df41af2 | 3812 | (F) You don't have System V semaphore IPC on your system. |
a0d0e21e | 3813 | |
69282e91 | 3814 | =item send() on closed socket %s |
a0d0e21e | 3815 | |
be771a83 | 3816 | (W closed) The socket you're sending to got itself closed sometime |
c289d2f7 | 3817 | before now. Check your control flow. |
a0d0e21e | 3818 | |
7253e4e3 | 3819 | =item Sequence (? incomplete in regex; marked by <-- HERE in m/%s/ |
7b8d334a | 3820 | |
7253e4e3 | 3821 | (F) A regular expression ended with an incomplete extension (?. The <-- HERE |
b45f050a | 3822 | shows in the regular expression about where the problem was discovered. See |
be771a83 | 3823 | L<perlre>. |
1b1626e4 | 3824 | |
49704364 | 3825 | =item Sequence (?%s...) not implemented in regex; marked by <-- HERE in m/%s/ |
a0d0e21e | 3826 | |
b45f050a | 3827 | (F) A proposed regular expression extension has the character reserved but |
7253e4e3 | 3828 | has not yet been written. The <-- HERE shows in the regular expression about |
b45f050a JF |
3829 | where the problem was discovered. See L<perlre>. |
3830 | ||
49704364 | 3831 | =item Sequence (?%s...) not recognized in regex; marked by <-- HERE in m/%s/ |
a0d0e21e | 3832 | |
7253e4e3 RK |
3833 | (F) You used a regular expression extension that doesn't make sense. The |
3834 | <-- HERE shows in the regular expression about where the problem was | |
3835 | discovered. See L<perlre>. | |
a0d0e21e | 3836 | |
1f1031fe YO |
3837 | =item Sequence \\%s... not terminated in regex; marked by <-- HERE in m/%s/ |
3838 | ||
3839 | (F) The regular expression expects a mandatory argument following the escape | |
3840 | sequence and this has been omitted or incorrectly written. | |
3841 | ||
49704364 | 3842 | =item Sequence (?#... not terminated in regex; marked by <-- HERE in m/%s/ |
6df41af2 GS |
3843 | |
3844 | (F) A regular expression comment must be terminated by a closing | |
7253e4e3 RK |
3845 | parenthesis. Embedded parentheses aren't allowed. The <-- HERE shows in |
3846 | the regular expression about where the problem was discovered. See | |
3847 | L<perlre>. | |
6df41af2 | 3848 | |
96ebfdd7 RK |
3849 | =item Sequence (?{...}) not terminated or not {}-balanced in regex; marked by <-- HERE in m/%s/ |
3850 | ||
3851 | (F) If the contents of a (?{...}) clause contains braces, they must balance | |
3852 | for Perl to properly detect the end of the clause. The <-- HERE shows in | |
3853 | the regular expression about where the problem was discovered. See | |
3854 | L<perlre>. | |
3855 | ||
6df41af2 GS |
3856 | =item 500 Server error |
3857 | ||
3858 | See Server error. | |
3859 | ||
a5f75d66 AD |
3860 | =item Server error |
3861 | ||
3cdd684c | 3862 | This is the error message generally seen in a browser window when trying |
be771a83 GS |
3863 | to run a CGI program (including SSI) over the web. The actual error text |
3864 | varies widely from server to server. The most frequently-seen variants | |
3865 | are "500 Server error", "Method (something) not permitted", "Document | |
3866 | contains no data", "Premature end of script headers", and "Did not | |
3867 | produce a valid header". | |
9607fc9c | 3868 | |
3869 | B<This is a CGI error, not a Perl error>. | |
3870 | ||
be771a83 GS |
3871 | You need to make sure your script is executable, is accessible by the |
3872 | user CGI is running the script under (which is probably not the user | |
3873 | account you tested it under), does not rely on any environment variables | |
3874 | (like PATH) from the user it isn't running under, and isn't in a | |
3875 | location where the CGI server can't find it, basically, more or less. | |
3876 | Please see the following for more information: | |
9607fc9c | 3877 | |
06a5f41f JH |
3878 | http://www.perl.org/CGI_MetaFAQ.html |
3879 | http://www.htmlhelp.org/faq/cgifaq.html | |
3880 | http://www.w3.org/Security/Faq/ | |
a5f75d66 | 3881 | |
be94a901 GS |
3882 | You should also look at L<perlfaq9>. |
3883 | ||
a0d0e21e LW |
3884 | =item setegid() not implemented |
3885 | ||
be771a83 GS |
3886 | (F) You tried to assign to C<$)>, and your operating system doesn't |
3887 | support the setegid() system call (or equivalent), or at least Configure | |
3888 | didn't think so. | |
a0d0e21e LW |
3889 | |
3890 | =item seteuid() not implemented | |
3891 | ||
be771a83 GS |
3892 | (F) You tried to assign to C<< $> >>, and your operating system doesn't |
3893 | support the seteuid() system call (or equivalent), or at least Configure | |
3894 | didn't think so. | |
a0d0e21e | 3895 | |
81777298 GS |
3896 | =item setpgrp can't take arguments |
3897 | ||
be771a83 GS |
3898 | (F) Your system has the setpgrp() from BSD 4.2, which takes no |
3899 | arguments, unlike POSIX setpgid(), which takes a process ID and process | |
3900 | group ID. | |
81777298 | 3901 | |
a0d0e21e LW |
3902 | =item setrgid() not implemented |
3903 | ||
be771a83 GS |
3904 | (F) You tried to assign to C<$(>, and your operating system doesn't |
3905 | support the setrgid() system call (or equivalent), or at least Configure | |
3906 | didn't think so. | |
a0d0e21e LW |
3907 | |
3908 | =item setruid() not implemented | |
3909 | ||
be771a83 GS |
3910 | (F) You tried to assign to C<$<>, and your operating system doesn't |
3911 | support the setruid() system call (or equivalent), or at least Configure | |
3912 | didn't think so. | |
a0d0e21e | 3913 | |
6df41af2 GS |
3914 | =item setsockopt() on closed socket %s |
3915 | ||
be771a83 GS |
3916 | (W closed) You tried to set a socket option on a closed socket. Did you |
3917 | forget to check the return value of your socket() call? See | |
6df41af2 GS |
3918 | L<perlfunc/setsockopt>. |
3919 | ||
a0d0e21e LW |
3920 | =item Setuid/gid script is writable by world |
3921 | ||
be771a83 GS |
3922 | (F) The setuid emulator won't run a script that is writable by the |
3923 | world, because the world might have written on it already. | |
a0d0e21e | 3924 | |
d504a7a1 RGS |
3925 | =item Setuid script not plain file |
3926 | ||
3927 | (F) The setuid emulator won't run a script that isn't read from a file, | |
3928 | but from a socket, a pipe or another device. | |
3929 | ||
a0d0e21e LW |
3930 | =item shm%s not implemented |
3931 | ||
3932 | (F) You don't have System V shared memory IPC on your system. | |
3933 | ||
984200d0 YST |
3934 | =item !=~ should be !~ |
3935 | ||
3936 | (W syntax) The non-matching operator is !~, not !=~. !=~ will be | |
3937 | interpreted as the != (numeric not equal) and ~ (1's complement) | |
3938 | operators: probably not what you intended. | |
3939 | ||
6df41af2 GS |
3940 | =item <> should be quotes |
3941 | ||
3942 | (F) You wrote C<< require <file> >> when you should have written | |
3943 | C<require 'file'>. | |
3944 | ||
3945 | =item /%s/ should probably be written as "%s" | |
3946 | ||
3947 | (W syntax) You have used a pattern where Perl expected to find a string, | |
be771a83 GS |
3948 | as in the first argument to C<join>. Perl will treat the true or false |
3949 | result of matching the pattern against $_ as the string, which is | |
3950 | probably not what you had in mind. | |
6df41af2 | 3951 | |
69282e91 | 3952 | =item shutdown() on closed socket %s |
a0d0e21e | 3953 | |
75b44862 GS |
3954 | (W closed) You tried to do a shutdown on a closed socket. Seems a bit |
3955 | superfluous. | |
a0d0e21e | 3956 | |
f86702cc | 3957 | =item SIG%s handler "%s" not defined |
a0d0e21e | 3958 | |
be771a83 GS |
3959 | (W signal) The signal handler named in %SIG doesn't, in fact, exist. |
3960 | Perhaps you put it into the wrong package? | |
a0d0e21e | 3961 | |
229c18ce RGS |
3962 | =item Smart matching a non-overloaded object breaks encapsulation |
3963 | ||
3964 | (F) You should not use the C<~~> operator on an object that does not | |
3965 | overload it: Perl refuses to use the object's underlying structure for | |
3966 | the smart match. | |
3967 | ||
a0d0e21e LW |
3968 | =item sort is now a reserved word |
3969 | ||
3970 | (F) An ancient error message that almost nobody ever runs into anymore. | |
3971 | But before sort was a keyword, people sometimes used it as a filehandle. | |
3972 | ||
a0d0e21e LW |
3973 | =item Sort subroutine didn't return single value |
3974 | ||
3975 | (F) A sort comparison subroutine may not return a list value with more | |
3976 | or less than one element. See L<perlfunc/sort>. | |
3977 | ||
8cbc2e3b JH |
3978 | =item splice() offset past end of array |
3979 | ||
3980 | (W misc) You attempted to specify an offset that was past the end of | |
3981 | the array passed to splice(). Splicing will instead commence at the end | |
3982 | of the array, rather than past it. If this isn't what you want, try | |
3983 | explicitly pre-extending the array by assigning $#array = $offset. See | |
3984 | L<perlfunc/splice>. | |
3985 | ||
a0d0e21e LW |
3986 | =item Split loop |
3987 | ||
be771a83 GS |
3988 | (P) The split was looping infinitely. (Obviously, a split shouldn't |
3989 | iterate more times than there are characters of input, which is what | |
3990 | happened.) See L<perlfunc/split>. | |
a0d0e21e | 3991 | |
a0d0e21e LW |
3992 | =item Statement unlikely to be reached |
3993 | ||
be771a83 GS |
3994 | (W exec) You did an exec() with some statement after it other than a |
3995 | die(). This is almost always an error, because exec() never returns | |
3996 | unless there was a failure. You probably wanted to use system() | |
3997 | instead, which does return. To suppress this warning, put the exec() in | |
3998 | a block by itself. | |
a0d0e21e | 3999 | |
9ddeeac9 | 4000 | =item stat() on unopened filehandle %s |
6df41af2 | 4001 | |
355b1299 JH |
4002 | (W unopened) You tried to use the stat() function on a filehandle that |
4003 | was either never opened or has since been closed. | |
6df41af2 | 4004 | |
fe13d51d | 4005 | =item Stub found while resolving method "%s" overloading "%s" in package "%s" |
e7ea3e70 | 4006 | |
be771a83 GS |
4007 | (P) Overloading resolution over @ISA tree may be broken by importation |
4008 | stubs. Stubs should never be implicitly created, but explicit calls to | |
4009 | C<can> may break this. | |
e7ea3e70 | 4010 | |
a0d0e21e LW |
4011 | =item Subroutine %s redefined |
4012 | ||
e476b1b5 | 4013 | (W redefine) You redefined a subroutine. To suppress this warning, say |
a0d0e21e LW |
4014 | |
4015 | { | |
271595cc | 4016 | no warnings 'redefine'; |
a0d0e21e LW |
4017 | eval "sub name { ... }"; |
4018 | } | |
4019 | ||
4020 | =item Substitution loop | |
4021 | ||
be771a83 GS |
4022 | (P) The substitution was looping infinitely. (Obviously, a substitution |
4023 | shouldn't iterate more times than there are characters of input, which | |
4024 | is what happened.) See the discussion of substitution in | |
5d44bfff | 4025 | L<perlop/"Regexp Quote-Like Operators">. |
a0d0e21e LW |
4026 | |
4027 | =item Substitution pattern not terminated | |
4028 | ||
d1be9408 | 4029 | (F) The lexer couldn't find the interior delimiter of an s/// or s{}{} |
a0d0e21e | 4030 | construct. Remember that bracketing delimiters count nesting level. |
fb73857a | 4031 | Missing the leading C<$> from variable C<$s> may cause this error. |
a0d0e21e LW |
4032 | |
4033 | =item Substitution replacement not terminated | |
4034 | ||
d1be9408 | 4035 | (F) The lexer couldn't find the final delimiter of an s/// or s{}{} |
a0d0e21e | 4036 | construct. Remember that bracketing delimiters count nesting level. |
fb73857a | 4037 | Missing the leading C<$> from variable C<$s> may cause this error. |
a0d0e21e LW |
4038 | |
4039 | =item substr outside of string | |
4040 | ||
be771a83 GS |
4041 | (W substr),(F) You tried to reference a substr() that pointed outside of |
4042 | a string. That is, the absolute value of the offset was larger than the | |
4043 | length of the string. See L<perlfunc/substr>. This warning is fatal if | |
4044 | substr is used in an lvalue context (as the left hand side of an | |
4045 | assignment or as a subroutine argument for example). | |
a0d0e21e | 4046 | |
bf1320bf RGS |
4047 | =item sv_upgrade from type %d down to type %d |
4048 | ||
4049 | (P) Perl tried to force the upgrade an SV to a type which was actually | |
4050 | inferior to its current type. | |
4051 | ||
49704364 | 4052 | =item Switch (?(condition)... contains too many branches in regex; marked by <-- HERE in m/%s/ |
b45f050a JF |
4053 | |
4054 | (F) A (?(condition)if-clause|else-clause) construct can have at most two | |
4055 | branches (the if-clause and the else-clause). If you want one or both to | |
4056 | contain alternation, such as using C<this|that|other>, enclose it in | |
4057 | clustering parentheses: | |
4058 | ||
4059 | (?(condition)(?:this|that|other)|else-clause) | |
4060 | ||
7253e4e3 | 4061 | The <-- HERE shows in the regular expression about where the problem was |
b45f050a JF |
4062 | discovered. See L<perlre>. |
4063 | ||
49704364 | 4064 | =item Switch condition not recognized in regex; marked by <-- HERE in m/%s/ |
b45f050a JF |
4065 | |
4066 | (F) If the argument to the (?(...)if-clause|else-clause) construct is a | |
7253e4e3 | 4067 | number, it can be only a number. The <-- HERE shows in the regular expression |
b45f050a JF |
4068 | about where the problem was discovered. See L<perlre>. |
4069 | ||
85ab1d1d JH |
4070 | =item switching effective %s is not implemented |
4071 | ||
be771a83 GS |
4072 | (F) While under the C<use filetest> pragma, we cannot switch the real |
4073 | and effective uids or gids. | |
85ab1d1d | 4074 | |
2f7da168 RK |
4075 | =item %s syntax |
4076 | ||
4077 | (F) The final summary message when a C<perl -c> succeeds. | |
4078 | ||
a0d0e21e LW |
4079 | =item syntax error |
4080 | ||
4081 | (F) Probably means you had a syntax error. Common reasons include: | |
4082 | ||
4083 | A keyword is misspelled. | |
4084 | A semicolon is missing. | |
4085 | A comma is missing. | |
4086 | An opening or closing parenthesis is missing. | |
4087 | An opening or closing brace is missing. | |
4088 | A closing quote is missing. | |
4089 | ||
4090 | Often there will be another error message associated with the syntax | |
4091 | error giving more information. (Sometimes it helps to turn on B<-w>.) | |
4092 | The error message itself often tells you where it was in the line when | |
4093 | it decided to give up. Sometimes the actual error is several tokens | |
5f05dabc | 4094 | before this, because Perl is good at understanding random input. |
a0d0e21e LW |
4095 | Occasionally the line number may be misleading, and once in a blue moon |
4096 | the only way to figure out what's triggering the error is to call | |
4097 | C<perl -c> repeatedly, chopping away half the program each time to see | |
be771a83 GS |
4098 | if the error went away. Sort of the cybernetic version of S<20 |
4099 | questions>. | |
a0d0e21e | 4100 | |
cb1a09d0 AD |
4101 | =item syntax error at line %d: `%s' unexpected |
4102 | ||
be771a83 GS |
4103 | (A) You've accidentally run your script through the Bourne shell instead |
4104 | of Perl. Check the #! line, or manually feed your script into Perl | |
4105 | yourself. | |
cb1a09d0 | 4106 | |
25f58aea PN |
4107 | =item syntax error in file %s at line %d, next 2 tokens "%s" |
4108 | ||
4109 | (F) This error is likely to occur if you run a perl5 script through | |
4110 | a perl4 interpreter, especially if the next 2 tokens are "use strict" | |
4111 | or "my $var" or "our $var". | |
4112 | ||
b5fe5ca2 SR |
4113 | =item sysread() on closed filehandle %s |
4114 | ||
4115 | (W closed) You tried to read from a closed filehandle. | |
4116 | ||
4117 | =item sysread() on unopened filehandle %s | |
4118 | ||
4119 | (W unopened) You tried to read from a filehandle that was never opened. | |
4120 | ||
6087ac44 | 4121 | =item System V %s is not implemented on this machine |
a0d0e21e | 4122 | |
6087ac44 JH |
4123 | (F) You tried to do something with a function beginning with "sem", |
4124 | "shm", or "msg" but that System V IPC is not implemented in your | |
4125 | machine. In some machines the functionality can exist but be | |
4126 | unconfigured. Consult your system support. | |
a0d0e21e | 4127 | |
69282e91 | 4128 | =item syswrite() on closed filehandle %s |
a0d0e21e | 4129 | |
be771a83 | 4130 | (W closed) The filehandle you're writing to got itself closed sometime |
c289d2f7 | 4131 | before now. Check your control flow. |
a0d0e21e | 4132 | |
96ebfdd7 RK |
4133 | =item C<-T> and C<-B> not implemented on filehandles |
4134 | ||
4135 | (F) Perl can't peek at the stdio buffer of filehandles when it doesn't | |
4136 | know about your kind of stdio. You'll have to use a filename instead. | |
4137 | ||
fc36a67e | 4138 | =item Target of goto is too deeply nested |
4139 | ||
be771a83 GS |
4140 | (F) You tried to use C<goto> to reach a label that was too deeply nested |
4141 | for Perl to reach. Perl is doing you a favor by refusing. | |
fc36a67e | 4142 | |
9ddeeac9 | 4143 | =item tell() on unopened filehandle |
a0d0e21e | 4144 | |
be771a83 GS |
4145 | (W unopened) You tried to use the tell() function on a filehandle that |
4146 | was either never opened or has since been closed. | |
a0d0e21e | 4147 | |
abc7ecad SP |
4148 | =item telldir() attempted on invalid dirhandle %s |
4149 | ||
4150 | (W io) The dirhandle you tried to telldir() is either closed or not really | |
4151 | a dirhandle. Check your control flow. | |
4152 | ||
a0d0e21e LW |
4153 | =item That use of $[ is unsupported |
4154 | ||
be771a83 GS |
4155 | (F) Assignment to C<$[> is now strictly circumscribed, and interpreted |
4156 | as a compiler directive. You may say only one of | |
a0d0e21e LW |
4157 | |
4158 | $[ = 0; | |
4159 | $[ = 1; | |
4160 | ... | |
4161 | local $[ = 0; | |
4162 | local $[ = 1; | |
4163 | ... | |
4164 | ||
be771a83 GS |
4165 | This is to prevent the problem of one module changing the array base out |
4166 | from under another module inadvertently. See L<perlvar/$[>. | |
a0d0e21e | 4167 | |
f86702cc | 4168 | =item The crypt() function is unimplemented due to excessive paranoia |
a0d0e21e LW |
4169 | |
4170 | (F) Configure couldn't find the crypt() function on your machine, | |
4171 | probably because your vendor didn't supply it, probably because they | |
8b1a09fc | 4172 | think the U.S. Government thinks it's a secret, or at least that they |
a0d0e21e LW |
4173 | will continue to pretend that it is. And if you quote me on that, I |
4174 | will deny it. | |
4175 | ||
6df41af2 GS |
4176 | =item The %s function is unimplemented |
4177 | ||
4178 | The function indicated isn't implemented on this architecture, according | |
4179 | to the probings of Configure. | |
4180 | ||
5e1c7ca2 | 4181 | =item The stat preceding %s wasn't an lstat |
a0d0e21e | 4182 | |
be771a83 GS |
4183 | (F) It makes no sense to test the current stat buffer for symbolic |
4184 | linkhood if the last stat that wrote to the stat buffer already went | |
4185 | past the symlink to get to the real file. Use an actual filename | |
4186 | instead. | |
a0d0e21e | 4187 | |
371fce9b DM |
4188 | =item The 'unique' attribute may only be applied to 'our' variables |
4189 | ||
1108974d | 4190 | (F) This attribute was never supported on C<my> or C<sub> declarations. |
371fce9b | 4191 | |
437784d6 | 4192 | =item This Perl can't reset CRTL environ elements (%s) |
f675dbe5 CB |
4193 | |
4194 | =item This Perl can't set CRTL environ elements (%s=%s) | |
4195 | ||
75b44862 | 4196 | (W internal) Warnings peculiar to VMS. You tried to change or delete an |
be771a83 GS |
4197 | element of the CRTL's internal environ array, but your copy of Perl |
4198 | wasn't built with a CRTL that contained the setenv() function. You'll | |
4199 | need to rebuild Perl with a CRTL that does, or redefine | |
4200 | F<PERL_ENV_TABLES> (see L<perlvms>) so that the environ array isn't the | |
4201 | target of the change to | |
f675dbe5 CB |
4202 | %ENV which produced the warning. |
4203 | ||
6b3c7930 JH |
4204 | =item thread failed to start: %s |
4205 | ||
4447dfc1 | 4206 | (W threads)(S) The entry point function of threads->create() failed for some reason. |
6b3c7930 | 4207 | |
a0d0e21e LW |
4208 | =item times not implemented |
4209 | ||
be771a83 GS |
4210 | (F) Your version of the C library apparently doesn't do times(). I |
4211 | suspect you're not running on Unix. | |
a0d0e21e | 4212 | |
6d3b25aa RGS |
4213 | =item "-T" is on the #! line, it must also be used on the command line |
4214 | ||
4215 | (X) The #! line (or local equivalent) in a Perl script contains the | |
fe13d51d | 4216 | B<-T> option (or the B<-t> option), but Perl was not invoked with B<-T> in its command line. |
6d3b25aa RGS |
4217 | This is an error because, by the time Perl discovers a B<-T> in a |
4218 | script, it's too late to properly taint everything from the environment. | |
4219 | So Perl gives up. | |
4220 | ||
4221 | If the Perl script is being executed as a command using the #! | |
4222 | mechanism (or its local equivalent), this error can usually be fixed by | |
fe13d51d JM |
4223 | editing the #! line so that the B<-%c> option is a part of Perl's first |
4224 | argument: e.g. change C<perl -n -%c> to C<perl -%c -n>. | |
6d3b25aa RGS |
4225 | |
4226 | If the Perl script is being executed as C<perl scriptname>, then the | |
fe13d51d | 4227 | B<-%c> option must appear on the command line: C<perl -%c scriptname>. |
6d3b25aa | 4228 | |
3a2263fe RGS |
4229 | =item To%s: illegal mapping '%s' |
4230 | ||
4231 | (F) You tried to define a customized To-mapping for lc(), lcfirst, | |
4232 | uc(), or ucfirst() (or their string-inlined versions), but you | |
4233 | specified an illegal mapping. | |
4234 | See L<perlunicode/"User-Defined Character Properties">. | |
4235 | ||
49704364 WL |
4236 | =item Too deeply nested ()-groups |
4237 | ||
1a147d38 | 4238 | (F) Your template contains ()-groups with a ridiculously deep nesting level. |
49704364 | 4239 | |
a0d0e21e LW |
4240 | =item Too few args to syscall |
4241 | ||
4242 | (F) There has to be at least one argument to syscall() to specify the | |
4243 | system call to call, silly dilly. | |
4244 | ||
96ebfdd7 RK |
4245 | =item Too late for "-%s" option |
4246 | ||
4247 | (X) The #! line (or local equivalent) in a Perl script contains the | |
4ba71d51 FC |
4248 | B<-M>, B<-m> or B<-C> option. |
4249 | ||
4250 | In the case of B<-M> and B<-m>, this is an error because those options are | |
4251 | not intended for use inside scripts. Use the C<use> pragma instead. | |
4252 | ||
4253 | The B<-C> option only works if it is specified on the command line as well | |
4254 | (with the same sequence of letters or numbers following). Either specify | |
4255 | this option on the command line, or, if your system supports it, make your | |
4256 | script executable and run it directly instead of passing it to perl. | |
96ebfdd7 | 4257 | |
ddda08b7 GS |
4258 | =item Too late to run %s block |
4259 | ||
4260 | (W void) A CHECK or INIT block is being defined during run time proper, | |
4261 | when the opportunity to run them has already passed. Perhaps you are | |
be771a83 GS |
4262 | loading a file with C<require> or C<do> when you should be using C<use> |
4263 | instead. Or perhaps you should put the C<require> or C<do> inside a | |
4264 | BEGIN block. | |
ddda08b7 | 4265 | |
a0d0e21e LW |
4266 | =item Too many args to syscall |
4267 | ||
5f05dabc | 4268 | (F) Perl supports a maximum of only 14 args to syscall(). |
a0d0e21e LW |
4269 | |
4270 | =item Too many arguments for %s | |
4271 | ||
4272 | (F) The function requires fewer arguments than you specified. | |
4273 | ||
6df41af2 GS |
4274 | =item Too many )'s |
4275 | ||
49704364 WL |
4276 | (A) You've accidentally run your script through B<csh> instead of Perl. |
4277 | Check the #! line, or manually feed your script into Perl yourself. | |
4278 | ||
8c40cb74 NC |
4279 | =item Too many ('s |
4280 | ||
be771a83 GS |
4281 | (A) You've accidentally run your script through B<csh> instead of Perl. |
4282 | Check the #! line, or manually feed your script into Perl yourself. | |
6df41af2 | 4283 | |
7253e4e3 | 4284 | =item Trailing \ in regex m/%s/ |
a0d0e21e | 4285 | |
be771a83 GS |
4286 | (F) The regular expression ends with an unbackslashed backslash. |
4287 | Backslash it. See L<perlre>. | |
a0d0e21e | 4288 | |
2c268ad5 | 4289 | =item Transliteration pattern not terminated |
a0d0e21e LW |
4290 | |
4291 | (F) The lexer couldn't find the interior delimiter of a tr/// or tr[][] | |
fb73857a | 4292 | or y/// or y[][] construct. Missing the leading C<$> from variables |
4293 | C<$tr> or C<$y> may cause this error. | |
a0d0e21e | 4294 | |
2c268ad5 | 4295 | =item Transliteration replacement not terminated |
a0d0e21e | 4296 | |
6a36df5d YST |
4297 | (F) The lexer couldn't find the final delimiter of a tr///, tr[][], |
4298 | y/// or y[][] construct. | |
a0d0e21e | 4299 | |
96ebfdd7 RK |
4300 | =item '%s' trapped by operation mask |
4301 | ||
4302 | (F) You tried to use an operator from a Safe compartment in which it's | |
4303 | disallowed. See L<Safe>. | |
4304 | ||
a0d0e21e LW |
4305 | =item truncate not implemented |
4306 | ||
4307 | (F) Your machine doesn't implement a file truncation mechanism that | |
4308 | Configure knows about. | |
4309 | ||
4310 | =item Type of arg %d to %s must be %s (not %s) | |
4311 | ||
4312 | (F) This function requires the argument in that position to be of a | |
8b1a09fc | 4313 | certain type. Arrays must be @NAME or C<@{EXPR}>. Hashes must be |
4314 | %NAME or C<%{EXPR}>. No implicit dereferencing is allowed--use the | |
a0d0e21e LW |
4315 | {EXPR} forms as an explicit dereference. See L<perlref>. |
4316 | ||
eec2d3df GS |
4317 | =item umask not implemented |
4318 | ||
be771a83 GS |
4319 | (F) Your machine doesn't implement the umask function and you tried to |
4320 | use it to restrict permissions for yourself (EXPR & 0700). | |
a0d0e21e | 4321 | |
4633a7c4 LW |
4322 | =item Unable to create sub named "%s" |
4323 | ||
4324 | (F) You attempted to create or access a subroutine with an illegal name. | |
4325 | ||
a0d0e21e LW |
4326 | =item Unbalanced context: %d more PUSHes than POPs |
4327 | ||
be771a83 GS |
4328 | (W internal) The exit code detected an internal inconsistency in how |
4329 | many execution contexts were entered and left. | |
a0d0e21e LW |
4330 | |
4331 | =item Unbalanced saves: %d more saves than restores | |
4332 | ||
be771a83 GS |
4333 | (W internal) The exit code detected an internal inconsistency in how |
4334 | many values were temporarily localized. | |
a0d0e21e LW |
4335 | |
4336 | =item Unbalanced scopes: %d more ENTERs than LEAVEs | |
4337 | ||
be771a83 GS |
4338 | (W internal) The exit code detected an internal inconsistency in how |
4339 | many blocks were entered and left. | |
a0d0e21e LW |
4340 | |
4341 | =item Unbalanced tmps: %d more allocs than frees | |
4342 | ||
be771a83 GS |
4343 | (W internal) The exit code detected an internal inconsistency in how |
4344 | many mortal scalars were allocated and freed. | |
a0d0e21e LW |
4345 | |
4346 | =item Undefined format "%s" called | |
4347 | ||
4348 | (F) The format indicated doesn't seem to exist. Perhaps it's really in | |
4349 | another package? See L<perlform>. | |
4350 | ||
4351 | =item Undefined sort subroutine "%s" called | |
4352 | ||
be771a83 GS |
4353 | (F) The sort comparison routine specified doesn't seem to exist. |
4354 | Perhaps it's in a different package? See L<perlfunc/sort>. | |
a0d0e21e LW |
4355 | |
4356 | =item Undefined subroutine &%s called | |
4357 | ||
be771a83 GS |
4358 | (F) The subroutine indicated hasn't been defined, or if it was, it has |
4359 | since been undefined. | |
a0d0e21e LW |
4360 | |
4361 | =item Undefined subroutine called | |
4362 | ||
4363 | (F) The anonymous subroutine you're trying to call hasn't been defined, | |
4364 | or if it was, it has since been undefined. | |
4365 | ||
4366 | =item Undefined subroutine in sort | |
4367 | ||
be771a83 GS |
4368 | (F) The sort comparison routine specified is declared but doesn't seem |
4369 | to have been defined yet. See L<perlfunc/sort>. | |
a0d0e21e | 4370 | |
4633a7c4 LW |
4371 | =item Undefined top format "%s" called |
4372 | ||
4373 | (F) The format indicated doesn't seem to exist. Perhaps it's really in | |
4374 | another package? See L<perlform>. | |
4375 | ||
20408e3c GS |
4376 | =item Undefined value assigned to typeglob |
4377 | ||
be771a83 GS |
4378 | (W misc) An undefined value was assigned to a typeglob, a la |
4379 | C<*foo = undef>. This does nothing. It's possible that you really mean | |
4380 | C<undef *foo>. | |
20408e3c | 4381 | |
6df41af2 GS |
4382 | =item %s: Undefined variable |
4383 | ||
be771a83 GS |
4384 | (A) You've accidentally run your script through B<csh> instead of Perl. |
4385 | Check the #! line, or manually feed your script into Perl yourself. | |
6df41af2 | 4386 | |
a0d0e21e LW |
4387 | =item unexec of %s into %s failed! |
4388 | ||
4389 | (F) The unexec() routine failed for some reason. See your local FSF | |
4390 | representative, who probably put it there in the first place. | |
4391 | ||
6f6ac1de | 4392 | =item Unicode non-character %s is illegal for interchange |
3d401ffb | 4393 | |
6f6ac1de RGS |
4394 | (W utf8) Certain codepoints, such as U+FFFE and U+FFFF, are defined by the |
4395 | Unicode standard to be non-characters. Those are legal codepoints, but are | |
4396 | reserved for internal use; so, applications shouldn't attempt to exchange | |
5b311467 KW |
4397 | them. In some cases, this message is also given if you use a codepoint that |
4398 | isn't in Unicode--that is it is above the legal maximum of U+10FFFF. These | |
4399 | aren't legal at all in Unicode, so they are illegal for interchange, but can be | |
4400 | used internally in a Perl program. If you know what you are doing you can turn | |
4401 | off this warning by C<no warnings 'utf8';>. | |
b45f050a | 4402 | |
a0d0e21e LW |
4403 | =item Unknown BYTEORDER |
4404 | ||
be771a83 GS |
4405 | (F) There are no byte-swapping functions for a machine with this byte |
4406 | order. | |
a0d0e21e | 4407 | |
6170680b IZ |
4408 | =item Unknown open() mode '%s' |
4409 | ||
437784d6 | 4410 | (F) The second argument of 3-argument open() is not among the list |
c47ff5f1 | 4411 | of valid modes: C<< < >>, C<< > >>, C<<< >> >>>, C<< +< >>, |
488dad83 | 4412 | C<< +> >>, C<<< +>> >>>, C<-|>, C<|->, C<< <& >>, C<< >& >>. |
6170680b | 4413 | |
b4581f09 JH |
4414 | =item Unknown PerlIO layer "%s" |
4415 | ||
4416 | (W layer) An attempt was made to push an unknown layer onto the Perl I/O | |
4417 | system. (Layers take care of transforming data between external and | |
4418 | internal representations.) Note that some layers, such as C<mmap>, | |
4419 | are not supported in all environments. If your program didn't | |
4420 | explicitly request the failing operation, it may be the result of the | |
4421 | value of the environment variable PERLIO. | |
4422 | ||
f675dbe5 CB |
4423 | =item Unknown process %x sent message to prime_env_iter: %s |
4424 | ||
4425 | (P) An error peculiar to VMS. Perl was reading values for %ENV before | |
4426 | iterating over it, and someone else stuck a message in the stream of | |
4427 | data Perl expected. Someone's very confused, or perhaps trying to | |
4428 | subvert Perl's population of %ENV for nefarious purposes. | |
a05d7ebb | 4429 | |
2f7da168 RK |
4430 | =item Unknown "re" subpragma '%s' (known ones are: %s) |
4431 | ||
4432 | You tried to use an unknown subpragma of the "re" pragma. | |
4433 | ||
96ebfdd7 RK |
4434 | =item Unknown switch condition (?(%.2s in regex; marked by <-- HERE in m/%s/ |
4435 | ||
4436 | (F) The condition part of a (?(condition)if-clause|else-clause) construct | |
4437 | is not known. The condition may be lookahead or lookbehind (the condition | |
4438 | is true if the lookahead or lookbehind is true), a (?{...}) construct (the | |
4439 | condition is true if the code evaluates to a true value), or a number (the | |
4440 | condition is true if the set of capturing parentheses named by the number | |
4441 | matched). | |
4442 | ||
4443 | The <-- HERE shows in the regular expression about where the problem was | |
4444 | discovered. See L<perlre>. | |
4445 | ||
a05d7ebb JH |
4446 | =item Unknown Unicode option letter '%c' |
4447 | ||
4448 | You specified an unknown Unicode option. See L<perlrun> documentation | |
4449 | of the C<-C> switch for the list of known options. | |
4450 | ||
4451 | =item Unknown Unicode option value %x | |
4452 | ||
4453 | You specified an unknown Unicode option. See L<perlrun> documentation | |
4454 | of the C<-C> switch for the list of known options. | |
f675dbe5 | 4455 | |
3d1a39c8 RGS |
4456 | =item Unknown warnings category '%s' |
4457 | ||
4458 | (F) An error issued by the C<warnings> pragma. You specified a warnings | |
4459 | category that is unknown to perl at this point. | |
4460 | ||
4461 | Note that if you want to enable a warnings category registered by a module | |
4462 | (e.g. C<use warnings 'File::Find'>), you must have imported this module | |
e2e6a0f1 YO |
4463 | |
4464 | =item Unknown verb pattern '%s' in regex; marked by <-- HERE in m/%s/ | |
4465 | ||
4466 | (F) You either made a typo or have incorrectly put a C<*> quantifier | |
4467 | after an open brace in your pattern. Check the pattern and review | |
4468 | L<perlre> for details on legal verb patterns. | |
4469 | ||
3d1a39c8 RGS |
4470 | first. |
4471 | ||
7253e4e3 | 4472 | =item unmatched [ in regex; marked by <-- HERE in m/%s/ |
6df41af2 | 4473 | |
380a0633 | 4474 | (F) The brackets around a character class must match. If you wish to |
be771a83 | 4475 | include a closing bracket in a character class, backslash it or put it |
7253e4e3 RK |
4476 | first. The <-- HERE shows in the regular expression about where the problem |
4477 | was discovered. See L<perlre>. | |
6df41af2 | 4478 | |
7253e4e3 | 4479 | =item unmatched ( in regex; marked by <-- HERE in m/%s/ |
a0d0e21e LW |
4480 | |
4481 | (F) Unbackslashed parentheses must always be balanced in regular | |
7253e4e3 RK |
4482 | expressions. If you're a vi user, the % key is valuable for finding the |
4483 | matching parenthesis. The <-- HERE shows in the regular expression about | |
4484 | where the problem was discovered. See L<perlre>. | |
a0d0e21e | 4485 | |
d98d5fff | 4486 | =item Unmatched right %s bracket |
a0d0e21e | 4487 | |
be771a83 GS |
4488 | (F) The lexer counted more closing curly or square brackets than opening |
4489 | ones, so you're probably missing a matching opening bracket. As a | |
4490 | general rule, you'll find the missing one (so to speak) near the place | |
4491 | you were last editing. | |
a0d0e21e | 4492 | |
a0d0e21e LW |
4493 | =item Unquoted string "%s" may clash with future reserved word |
4494 | ||
be771a83 GS |
4495 | (W reserved) You used a bareword that might someday be claimed as a |
4496 | reserved word. It's best to put such a word in quotes, or capitalize it | |
4497 | somehow, or insert an underbar into it. You might also declare it as a | |
4498 | subroutine. | |
a0d0e21e | 4499 | |
b1fc3636 | 4500 | =item Unrecognized character %s; marked by <-- HERE after %s near column %d |
a0d0e21e | 4501 | |
54310121 | 4502 | (F) The Perl parser has no idea what to do with the specified character |
b1fc3636 | 4503 | in your Perl script (or eval) near the specified column. Perhaps you tried |
356c7adf | 4504 | to run a compressed script, a binary program, or a directory as a Perl program. |
a0d0e21e | 4505 | |
2628b4e0 | 4506 | =item Unrecognized escape \\%c in character class passed through in regex; marked by <-- HERE in m/%s/ |
6df41af2 | 4507 | |
be771a83 GS |
4508 | (W regexp) You used a backslash-character combination which is not |
4509 | recognized by Perl inside character classes. The character was | |
4510 | understood literally. | |
2628b4e0 TS |
4511 | The <-- HERE shows in the regular expression about where the |
4512 | escape was discovered. | |
6df41af2 | 4513 | |
2f7da168 RK |
4514 | =item Unrecognized escape \\%c passed through |
4515 | ||
2628b4e0 TS |
4516 | (W misc) You used a backslash-character combination which is not |
4517 | recognized by Perl. The character was understood literally. | |
2f7da168 | 4518 | |
49704364 | 4519 | =item Unrecognized escape \\%c passed through in regex; marked by <-- HERE in m/%s/ |
6df41af2 | 4520 | |
be771a83 | 4521 | (W regexp) You used a backslash-character combination which is not |
2628b4e0 TS |
4522 | recognized by Perl. The character was understood literally. |
4523 | The <-- HERE shows in the regular expression about where the | |
7253e4e3 | 4524 | escape was discovered. |
6df41af2 | 4525 | |
a0d0e21e LW |
4526 | =item Unrecognized signal name "%s" |
4527 | ||
be771a83 GS |
4528 | (F) You specified a signal name to the kill() function that was not |
4529 | recognized. Say C<kill -l> in your shell to see the valid signal names | |
4530 | on your system. | |
a0d0e21e | 4531 | |
90248788 | 4532 | =item Unrecognized switch: -%s (-h will show valid options) |
a0d0e21e | 4533 | |
be771a83 GS |
4534 | (F) You specified an illegal option to Perl. Don't do that. (If you |
4535 | think you didn't do that, check the #! line to see if it's supplying the | |
4536 | bad switch on your behalf.) | |
a0d0e21e LW |
4537 | |
4538 | =item Unsuccessful %s on filename containing newline | |
4539 | ||
be771a83 GS |
4540 | (W newline) A file operation was attempted on a filename, and that |
4541 | operation failed, PROBABLY because the filename contained a newline, | |
5b3eff12 | 4542 | PROBABLY because you forgot to chomp() it off. See L<perlfunc/chomp>. |
a0d0e21e LW |
4543 | |
4544 | =item Unsupported directory function "%s" called | |
4545 | ||
4546 | (F) Your machine doesn't support opendir() and readdir(). | |
4547 | ||
6df41af2 GS |
4548 | =item Unsupported function %s |
4549 | ||
4550 | (F) This machine doesn't implement the indicated function, apparently. | |
4551 | At least, Configure doesn't think so. | |
4552 | ||
54310121 | 4553 | =item Unsupported function fork |
4554 | ||
4555 | (F) Your version of executable does not support forking. | |
4556 | ||
be771a83 GS |
4557 | Note that under some systems, like OS/2, there may be different flavors |
4558 | of Perl executables, some of which may support fork, some not. Try | |
4559 | changing the name you call Perl by to C<perl_>, C<perl__>, and so on. | |
54310121 | 4560 | |
7aa207d6 | 4561 | =item Unsupported script encoding %s |
b250498f GS |
4562 | |
4563 | (F) Your program file begins with a Unicode Byte Order Mark (BOM) which | |
7aa207d6 | 4564 | declares it to be in a Unicode encoding that Perl cannot read. |
b250498f | 4565 | |
a0d0e21e LW |
4566 | =item Unsupported socket function "%s" called |
4567 | ||
4568 | (F) Your machine doesn't support the Berkeley socket mechanism, or at | |
4569 | least that's what Configure thought. | |
4570 | ||
6df41af2 | 4571 | =item Unterminated attribute list |
a0d0e21e | 4572 | |
be771a83 GS |
4573 | (F) The lexer found something other than a simple identifier at the |
4574 | start of an attribute, and it wasn't a semicolon or the start of a | |
4575 | block. Perhaps you terminated the parameter list of the previous | |
4576 | attribute too soon. See L<attributes>. | |
a0d0e21e | 4577 | |
09bef843 SB |
4578 | =item Unterminated attribute parameter in attribute list |
4579 | ||
be771a83 GS |
4580 | (F) The lexer saw an opening (left) parenthesis character while parsing |
4581 | an attribute list, but the matching closing (right) parenthesis | |
09bef843 SB |
4582 | character was not found. You may need to add (or remove) a backslash |
4583 | character to get your parentheses to balance. See L<attributes>. | |
4584 | ||
f1991046 GS |
4585 | =item Unterminated compressed integer |
4586 | ||
4587 | (F) An argument to unpack("w",...) was incompatible with the BER | |
4588 | compressed integer format and could not be converted to an integer. | |
4589 | See L<perlfunc/pack>. | |
4590 | ||
e2e6a0f1 YO |
4591 | =item Unterminated verb pattern in regex; marked by <-- HERE in m/%s/ |
4592 | ||
4593 | (F) You used a pattern of the form C<(*VERB)> but did not terminate | |
4594 | the pattern with a C<)>. Fix the pattern and retry. | |
4595 | ||
4596 | =item Unterminated verb pattern argument in regex; marked by <-- HERE in m/%s/ | |
4597 | ||
4598 | (F) You used a pattern of the form C<(*VERB:ARG)> but did not terminate | |
4599 | the pattern with a C<)>. Fix the pattern and retry. | |
4600 | ||
2bf803e2 YO |
4601 | =item Unterminated \g{...} pattern in regex; marked by <-- HERE in m/%s/ |
4602 | ||
4603 | (F) You missed a close brace on a \g{..} pattern (group reference) in | |
4604 | a regular expression. Fix the pattern and retry. | |
e2e6a0f1 | 4605 | |
6df41af2 | 4606 | =item Unterminated <> operator |
09bef843 | 4607 | |
6df41af2 | 4608 | (F) The lexer saw a left angle bracket in a place where it was expecting |
be771a83 GS |
4609 | a term, so it's looking for the corresponding right angle bracket, and |
4610 | not finding it. Chances are you left some needed parentheses out | |
4611 | earlier in the line, and you really meant a "less than". | |
09bef843 | 4612 | |
6df41af2 | 4613 | =item untie attempted while %d inner references still exist |
a0d0e21e | 4614 | |
be771a83 GS |
4615 | (W untie) A copy of the object returned from C<tie> (or C<tied>) was |
4616 | still valid when C<untie> was called. | |
a0d0e21e | 4617 | |
8e11cd2b JC |
4618 | =item Usage: POSIX::%s(%s) |
4619 | ||
4620 | (F) You called a POSIX function with incorrect arguments. | |
4621 | See L<POSIX/FUNCTIONS> for more information. | |
4622 | ||
4623 | =item Usage: Win32::%s(%s) | |
4624 | ||
4625 | (F) You called a Win32 function with incorrect arguments. | |
4626 | See L<Win32> for more information. | |
4627 | ||
96ebfdd7 | 4628 | =item Useless (?-%s) - don't use /%s modifier in regex; marked by <-- HERE in m/%s/ |
9d1d55b5 | 4629 | |
96ebfdd7 RK |
4630 | (W regexp) You have used an internal modifier such as (?-o) that has no |
4631 | meaning unless removed from the entire regexp: | |
9d1d55b5 | 4632 | |
96ebfdd7 | 4633 | if ($string =~ /(?-o)$pattern/o) { ... } |
9d1d55b5 JP |
4634 | |
4635 | must be written as | |
4636 | ||
96ebfdd7 | 4637 | if ($string =~ /$pattern/) { ... } |
9d1d55b5 JP |
4638 | |
4639 | The <-- HERE shows in the regular expression about | |
4640 | where the problem was discovered. See L<perlre>. | |
4641 | ||
b4581f09 JH |
4642 | =item Useless localization of %s |
4643 | ||
4644 | (W syntax) The localization of lvalues such as C<local($x=10)> is | |
4645 | legal, but in fact the local() currently has no effect. This may change at | |
4646 | some point in the future, but in the meantime such code is discouraged. | |
4647 | ||
96ebfdd7 | 4648 | =item Useless (?%s) - use /%s modifier in regex; marked by <-- HERE in m/%s/ |
9d1d55b5 | 4649 | |
96ebfdd7 RK |
4650 | (W regexp) You have used an internal modifier such as (?o) that has no |
4651 | meaning unless applied to the entire regexp: | |
9d1d55b5 | 4652 | |
96ebfdd7 | 4653 | if ($string =~ /(?o)$pattern/) { ... } |
9d1d55b5 JP |
4654 | |
4655 | must be written as | |
4656 | ||
96ebfdd7 | 4657 | if ($string =~ /$pattern/o) { ... } |
9d1d55b5 JP |
4658 | |
4659 | The <-- HERE shows in the regular expression about | |
4660 | where the problem was discovered. See L<perlre>. | |
4661 | ||
b08e453b RB |
4662 | =item Useless use of /d modifier in transliteration operator |
4663 | ||
4664 | (W misc) You have used the /d modifier where the searchlist has the | |
4665 | same length as the replacelist. See L<perlop> for more information | |
4666 | about the /d modifier. | |
4667 | ||
6df41af2 | 4668 | =item Useless use of %s in void context |
a0d0e21e | 4669 | |
75b44862 | 4670 | (W void) You did something without a side effect in a context that does |
be771a83 GS |
4671 | nothing with the return value, such as a statement that doesn't return a |
4672 | value from a block, or the left side of a scalar comma operator. Very | |
4673 | often this points not to stupidity on your part, but a failure of Perl | |
4674 | to parse your program the way you thought it would. For example, you'd | |
4675 | get this if you mixed up your C precedence with Python precedence and | |
4676 | said | |
a0d0e21e | 4677 | |
6df41af2 | 4678 | $one, $two = 1, 2; |
748a9306 | 4679 | |
6df41af2 GS |
4680 | when you meant to say |
4681 | ||
4682 | ($one, $two) = (1, 2); | |
4683 | ||
4684 | Another common error is to use ordinary parentheses to construct a list | |
4685 | reference when you should be using square or curly brackets, for | |
4686 | example, if you say | |
4687 | ||
4688 | $array = (1,2); | |
4689 | ||
4690 | when you should have said | |
4691 | ||
4692 | $array = [1,2]; | |
4693 | ||
4694 | The square brackets explicitly turn a list value into a scalar value, | |
4695 | while parentheses do not. So when a parenthesized list is evaluated in | |
4696 | a scalar context, the comma is treated like C's comma operator, which | |
4697 | throws away the left argument, which is not what you want. See | |
4698 | L<perlref> for more on this. | |
4699 | ||
65191a1e BS |
4700 | This warning will not be issued for numerical constants equal to 0 or 1 |
4701 | since they are often used in statements like | |
4702 | ||
4358a253 | 4703 | 1 while sub_with_side_effects(); |
65191a1e BS |
4704 | |
4705 | String constants that would normally evaluate to 0 or 1 are warned | |
4706 | about. | |
4707 | ||
6df41af2 GS |
4708 | =item Useless use of "re" pragma |
4709 | ||
4710 | (W) You did C<use re;> without any arguments. That isn't very useful. | |
4711 | ||
a801c63c RGS |
4712 | =item Useless use of sort in scalar context |
4713 | ||
4714 | (W void) You used sort in scalar context, as in : | |
4715 | ||
4716 | my $x = sort @y; | |
4717 | ||
4718 | This is not very useful, and perl currently optimizes this away. | |
4719 | ||
de4864e4 JH |
4720 | =item Useless use of %s with no values |
4721 | ||
f87c3213 | 4722 | (W syntax) You used the push() or unshift() function with no arguments |
de4864e4 JH |
4723 | apart from the array, like C<push(@x)> or C<unshift(@foo)>. That won't |
4724 | usually have any effect on the array, so is completely useless. It's | |
4725 | possible in principle that push(@tied_array) could have some effect | |
4726 | if the array is tied to a class which implements a PUSH method. If so, | |
4727 | you can write it as C<push(@tied_array,())> to avoid this warning. | |
4728 | ||
6df41af2 GS |
4729 | =item "use" not allowed in expression |
4730 | ||
be771a83 GS |
4731 | (F) The "use" keyword is recognized and executed at compile time, and |
4732 | returns no useful value. See L<perlmod>. | |
748a9306 | 4733 | |
55b67815 RGS |
4734 | =item Use of assignment to $[ is deprecated |
4735 | ||
4736 | (D deprecated) The C<$[> variable (index of the first element in an array) | |
4737 | is deprecated. See L<perlvar/"$[">. | |
4738 | ||
c47ff5f1 | 4739 | =item Use of bare << to mean <<"" is deprecated |
4633a7c4 | 4740 | |
8ab8f082 | 4741 | (D deprecated) You are now encouraged to use the explicitly quoted |
83ce3e12 RGS |
4742 | form if you wish to use an empty line as the terminator of the here-document. |
4743 | ||
4744 | =item Use of comma-less variable list is deprecated | |
4745 | ||
8ab8f082 | 4746 | (D deprecated) The values you give to a format should be |
83ce3e12 | 4747 | separated by commas, not just aligned on a line. |
4633a7c4 | 4748 | |
96ebfdd7 RK |
4749 | =item Use of chdir('') or chdir(undef) as chdir() deprecated |
4750 | ||
4751 | (D deprecated) chdir() with no arguments is documented to change to | |
4752 | $ENV{HOME} or $ENV{LOGDIR}. chdir(undef) and chdir('') share this | |
4753 | behavior, but that has been deprecated. In future versions they | |
4754 | will simply fail. | |
4755 | ||
4756 | Be careful to check that what you pass to chdir() is defined and not | |
4757 | blank, else you might find yourself in your home directory. | |
4758 | ||
64e578a2 MJD |
4759 | =item Use of /c modifier is meaningless in s/// |
4760 | ||
4761 | (W regexp) You used the /c modifier in a substitution. The /c | |
4762 | modifier is not presently meaningful in substitutions. | |
4763 | ||
4ac733c9 MJD |
4764 | =item Use of /c modifier is meaningless without /g |
4765 | ||
4766 | (W regexp) You used the /c modifier with a regex operand, but didn't | |
4767 | use the /g modifier. Currently, /c is meaningful only when /g is | |
4768 | used. (This may change in the future.) | |
4769 | ||
b6c83531 | 4770 | =item Use of freed value in iteration |
2f7da168 | 4771 | |
b6c83531 JH |
4772 | (F) Perhaps you modified the iterated array within the loop? |
4773 | This error is typically caused by code like the following: | |
2f7da168 RK |
4774 | |
4775 | @a = (3,4); | |
4776 | @a = () for (1,2,@a); | |
4777 | ||
4778 | You are not supposed to modify arrays while they are being iterated over. | |
4779 | For speed and efficiency reasons, Perl internally does not do full | |
4780 | reference-counting of iterated items, hence deleting such an item in the | |
4781 | middle of an iteration causes Perl to see a freed value. | |
4782 | ||
39b99f21 | 4783 | =item Use of *glob{FILEHANDLE} is deprecated |
4784 | ||
4785 | (D deprecated) You are now encouraged to use the shorter *glob{IO} form | |
4786 | to access the filehandle slot within a typeglob. | |
4787 | ||
96ebfdd7 | 4788 | =item Use of /g modifier is meaningless in split |
35ae6b54 | 4789 | |
96ebfdd7 RK |
4790 | (W regexp) You used the /g modifier on the pattern for a C<split> |
4791 | operator. Since C<split> always tries to match the pattern | |
4792 | repeatedly, the C</g> has no effect. | |
35ae6b54 | 4793 | |
0b98bec9 RGS |
4794 | =item Use of "goto" to jump into a construct is deprecated |
4795 | ||
4796 | (D deprecated) Using C<goto> to jump from an outer scope into an inner | |
4797 | scope is deprecated and should be avoided. | |
4798 | ||
dc848c6f | 4799 | =item Use of inherited AUTOLOAD for non-method %s() is deprecated |
4800 | ||
be771a83 GS |
4801 | (D deprecated) As an (ahem) accidental feature, C<AUTOLOAD> subroutines |
4802 | are looked up as methods (using the C<@ISA> hierarchy) even when the | |
4803 | subroutines to be autoloaded were called as plain functions (e.g. | |
4804 | C<Foo::bar()>), not as methods (e.g. C<< Foo->bar() >> or C<< | |
4805 | $obj->bar() >>). | |
dc848c6f | 4806 | |
be771a83 GS |
4807 | This bug will be rectified in future by using method lookup only for |
4808 | methods' C<AUTOLOAD>s. However, there is a significant base of existing | |
4809 | code that may be using the old behavior. So, as an interim step, Perl | |
4810 | currently issues an optional warning when non-methods use inherited | |
4811 | C<AUTOLOAD>s. | |
dc848c6f | 4812 | |
4813 | The simple rule is: Inheritance will not work when autoloading | |
be771a83 GS |
4814 | non-methods. The simple fix for old code is: In any module that used |
4815 | to depend on inheriting C<AUTOLOAD> for non-methods from a base class | |
4816 | named C<BaseClass>, execute C<*AUTOLOAD = \&BaseClass::AUTOLOAD> during | |
4817 | startup. | |
dc848c6f | 4818 | |
be771a83 GS |
4819 | In code that currently says C<use AutoLoader; @ISA = qw(AutoLoader);> |
4820 | you should remove AutoLoader from @ISA and change C<use AutoLoader;> to | |
7b8d334a | 4821 | C<use AutoLoader 'AUTOLOAD';>. |
fb73857a | 4822 | |
609122bd KW |
4823 | =item Use of octal value above 377 is deprecated |
4824 | ||
4825 | (D deprecated, W regexp) There is a constant in the regular expression whose | |
4826 | value is interpeted by Perl as octal and larger than 377 (255 decimal, 0xFF | |
4827 | hex). Perl may take this to mean different things depending on the rest of | |
4828 | the regular expression. If you meant such an octal value, convert it to | |
4829 | hexadecimal and use C<\xHH> or C<\x{HH}> instead. If you meant to have | |
4830 | part of it mean a backreference, use C<\g> for that. See L<perlre>. | |
4831 | ||
6df41af2 GS |
4832 | =item Use of %s in printf format not supported |
4833 | ||
4834 | (F) You attempted to use a feature of printf that is accessible from | |
4835 | only C. This usually means there's a better way to do it in Perl. | |
4836 | ||
6df41af2 GS |
4837 | =item Use of %s is deprecated |
4838 | ||
75b44862 | 4839 | (D deprecated) The construct indicated is no longer recommended for use, |
be771a83 GS |
4840 | generally because there's a better way to do it, and also because the |
4841 | old way has bad side effects. | |
6df41af2 | 4842 | |
96ebfdd7 RK |
4843 | =item Use of -l on filehandle %s |
4844 | ||
4845 | (W io) A filehandle represents an opened file, and when you opened the file | |
4846 | it already went past any symlink you are presumably trying to look for. | |
4847 | The operation returned C<undef>. Use a filename instead. | |
4848 | ||
4849 | =item Use of "package" with no arguments is deprecated | |
4850 | ||
4851 | (D deprecated) You used the C<package> keyword without specifying a package | |
4852 | name. So no namespace is current at all. Using this can cause many | |
4853 | otherwise reasonable constructs to fail in baffling ways. C<use strict;> | |
4854 | instead. | |
4855 | ||
1f1cc344 | 4856 | =item Use of reference "%s" as array index |
d804643f | 4857 | |
77b96956 | 4858 | (W misc) You tried to use a reference as an array index; this probably |
1f1cc344 JH |
4859 | isn't what you mean, because references in numerical context tend |
4860 | to be huge numbers, and so usually indicates programmer error. | |
d804643f | 4861 | |
64977eb6 | 4862 | If you really do mean it, explicitly numify your reference, like so: |
1f1cc344 JH |
4863 | C<$array[0+$ref]>. This warning is not given for overloaded objects, |
4864 | either, because you can overload the numification and stringification | |
353c6505 | 4865 | operators and then you assumably know what you are doing. |
d804643f | 4866 | |
85b81015 LW |
4867 | =item Use of reserved word "%s" is deprecated |
4868 | ||
be771a83 GS |
4869 | (D deprecated) The indicated bareword is a reserved word. Future |
4870 | versions of perl may use it as a keyword, so you're better off either | |
4871 | explicitly quoting the word in a manner appropriate for its context of | |
4872 | use, or using a different name altogether. The warning can be | |
4873 | suppressed for subroutine names by either adding a C<&> prefix, or using | |
4874 | a package qualifier, e.g. C<&our()>, or C<Foo::our()>. | |
85b81015 | 4875 | |
bbd7eb8a RD |
4876 | =item Use of tainted arguments in %s is deprecated |
4877 | ||
159f47d9 | 4878 | (W taint, deprecated) You have supplied C<system()> or C<exec()> with multiple |
bbd7eb8a RD |
4879 | arguments and at least one of them is tainted. This used to be allowed |
4880 | but will become a fatal error in a future version of perl. Untaint your | |
4881 | arguments. See L<perlsec>. | |
4882 | ||
cc95b072 | 4883 | =item Use of uninitialized value%s |
a0d0e21e | 4884 | |
be771a83 GS |
4885 | (W uninitialized) An undefined value was used as if it were already |
4886 | defined. It was interpreted as a "" or a 0, but maybe it was a mistake. | |
4887 | To suppress this warning assign a defined value to your variables. | |
a0d0e21e | 4888 | |
29489e7c DM |
4889 | To help you figure out what was undefined, perl will try to tell you the |
4890 | name of the variable (if any) that was undefined. In some cases it cannot | |
4891 | do this, so it also tells you what operation you used the undefined value | |
4892 | in. Note, however, that perl optimizes your program and the operation | |
4893 | displayed in the warning may not necessarily appear literally in your | |
4894 | program. For example, C<"that $foo"> is usually optimized into C<"that " | |
4895 | . $foo>, and the warning will refer to the C<concatenation (.)> operator, | |
4896 | even though there is no C<.> in your program. | |
e5be4a53 | 4897 | |
a1063b2d RH |
4898 | =item Using a hash as a reference is deprecated |
4899 | ||
496a33f5 | 4900 | (D deprecated) You tried to use a hash as a reference, as in |
1b1f1335 NIS |
4901 | C<< %foo->{"bar"} >> or C<< %$ref->{"hello"} >>. Versions of perl <= 5.6.1 |
4902 | used to allow this syntax, but shouldn't have. It is now deprecated, and will | |
496a33f5 | 4903 | be removed in a future version. |
a1063b2d RH |
4904 | |
4905 | =item Using an array as a reference is deprecated | |
4906 | ||
496a33f5 | 4907 | (D deprecated) You tried to use an array as a reference, as in |
1b1f1335 NIS |
4908 | C<< @foo->[23] >> or C<< @$ref->[99] >>. Versions of perl <= 5.6.1 used to |
4909 | allow this syntax, but shouldn't have. It is now deprecated, and will be | |
496a33f5 | 4910 | removed in a future version. |
a1063b2d | 4911 | |
9466bab6 JH |
4912 | =item UTF-16 surrogate %s |
4913 | ||
507b9800 JH |
4914 | (W utf8) You tried to generate half of an UTF-16 surrogate by |
4915 | requesting a Unicode character between the code points 0xD800 and | |
4916 | 0xDFFF (inclusive). That range is reserved exclusively for the use of | |
4917 | UTF-16 encoding (by having two 16-bit UCS-2 characters); but Perl | |
4918 | encodes its characters in UTF-8, so what you got is a very illegal | |
4919 | character. If you really know what you are doing you can turn off | |
4920 | this warning by C<no warnings 'utf8';>. | |
9466bab6 | 4921 | |
68dc0745 | 4922 | =item Value of %s can be "0"; test with defined() |
a6006777 | 4923 | |
75b44862 | 4924 | (W misc) In a conditional expression, you used <HANDLE>, <*> (glob), |
be771a83 GS |
4925 | C<each()>, or C<readdir()> as a boolean value. Each of these constructs |
4926 | can return a value of "0"; that would make the conditional expression | |
4927 | false, which is probably not what you intended. When using these | |
4928 | constructs in conditional expressions, test their values with the | |
4929 | C<defined> operator. | |
a6006777 | 4930 | |
f675dbe5 CB |
4931 | =item Value of CLI symbol "%s" too long |
4932 | ||
be771a83 GS |
4933 | (W misc) A warning peculiar to VMS. Perl tried to read the value of an |
4934 | %ENV element from a CLI symbol table, and found a resultant string | |
4935 | longer than 1024 characters. The return value has been truncated to | |
4936 | 1024 characters. | |
f675dbe5 | 4937 | |
b5c19bd7 | 4938 | =item Variable "%s" is not available |
44a8e56a | 4939 | |
b5c19bd7 DM |
4940 | (W closure) During compilation, an inner named subroutine or eval is |
4941 | attempting to capture an outer lexical that is not currently available. | |
42c13b56 | 4942 | This can happen for one of two reasons. First, the outer lexical may be |
b5c19bd7 DM |
4943 | declared in an outer anonymous subroutine that has not yet been created. |
4944 | (Remember that named subs are created at compile time, while anonymous | |
42c13b56 | 4945 | subs are created at run-time.) For example, |
44a8e56a | 4946 | |
b5c19bd7 | 4947 | sub { my $a; sub f { $a } } |
44a8e56a | 4948 | |
b5c19bd7 DM |
4949 | At the time that f is created, it can't capture the current value of $a, |
4950 | since the anonymous subroutine hasn't been created yet. Conversely, | |
4951 | the following won't give a warning since the anonymous subroutine has by | |
4952 | now been created and is live: | |
be771a83 | 4953 | |
b5c19bd7 DM |
4954 | sub { my $a; eval 'sub f { $a }' }->(); |
4955 | ||
4956 | The second situation is caused by an eval accessing a variable that has | |
4957 | gone out of scope, for example, | |
4958 | ||
4959 | sub f { | |
4960 | my $a; | |
4961 | sub { eval '$a' } | |
4962 | } | |
4963 | f()->(); | |
4964 | ||
4965 | Here, when the '$a' in the eval is being compiled, f() is not currently being | |
4966 | executed, so its $a is not available for capture. | |
44a8e56a | 4967 | |
b4581f09 JH |
4968 | =item Variable "%s" is not imported%s |
4969 | ||
4970 | (F) While "use strict" in effect, you referred to a global variable that | |
4971 | you apparently thought was imported from another module, because | |
4972 | something else of the same name (usually a subroutine) is exported by | |
4973 | that module. It usually means you put the wrong funny character on the | |
4974 | front of your variable. | |
4975 | ||
58e23c8d | 4976 | =item Variable length lookbehind not implemented in m/%s/ |
b4581f09 JH |
4977 | |
4978 | (F) Lookbehind is allowed only for subexpressions whose length is fixed and | |
58e23c8d | 4979 | known at compile time. See L<perlre>. |
b4581f09 JH |
4980 | |
4981 | =item "%s" variable %s masks earlier declaration in same %s | |
4982 | ||
30c282f6 | 4983 | (W misc) A "my", "our" or "state" variable has been redeclared in the current |
b4581f09 JH |
4984 | scope or statement, effectively eliminating all access to the previous |
4985 | instance. This is almost always a typographical error. Note that the | |
4986 | earlier variable will still exist until the end of the scope or until | |
4987 | all closure referents to it are destroyed. | |
4988 | ||
6df41af2 GS |
4989 | =item Variable syntax |
4990 | ||
4991 | (A) You've accidentally run your script through B<csh> instead | |
4992 | of Perl. Check the #! line, or manually feed your script into | |
4993 | Perl yourself. | |
4994 | ||
44a8e56a | 4995 | =item Variable "%s" will not stay shared |
4996 | ||
be771a83 | 4997 | (W closure) An inner (nested) I<named> subroutine is referencing a |
b5c19bd7 | 4998 | lexical variable defined in an outer named subroutine. |
44a8e56a | 4999 | |
b5c19bd7 | 5000 | When the inner subroutine is called, it will see the value of |
be771a83 GS |
5001 | the outer subroutine's variable as it was before and during the *first* |
5002 | call to the outer subroutine; in this case, after the first call to the | |
5003 | outer subroutine is complete, the inner and outer subroutines will no | |
5004 | longer share a common value for the variable. In other words, the | |
5005 | variable will no longer be shared. | |
44a8e56a | 5006 | |
44a8e56a | 5007 | This problem can usually be solved by making the inner subroutine |
5008 | anonymous, using the C<sub {}> syntax. When inner anonymous subs that | |
b5c19bd7 | 5009 | reference variables in outer subroutines are created, they |
be771a83 | 5010 | are automatically rebound to the current values of such variables. |
44a8e56a | 5011 | |
e2e6a0f1 YO |
5012 | =item Verb pattern '%s' has a mandatory argument in regex; marked by <-- HERE in m/%s/ |
5013 | ||
5014 | (F) You used a verb pattern that requires an argument. Supply an argument | |
5015 | or check that you are using the right verb. | |
5016 | ||
5017 | =item Verb pattern '%s' may not have an argument in regex; marked by <-- HERE in m/%s/ | |
5018 | ||
5019 | (F) You used a verb pattern that is not allowed an argument. Remove the | |
5020 | argument or check that you are using the right verb. | |
5021 | ||
084610c0 GS |
5022 | =item Version number must be a constant number |
5023 | ||
5024 | (P) The attempt to translate a C<use Module n.n LIST> statement into | |
5025 | its equivalent C<BEGIN> block found an internal inconsistency with | |
5026 | the version number. | |
5027 | ||
808ee47e SP |
5028 | =item Version string '%s' contains invalid data; ignoring: '%s' |
5029 | ||
32e998fd RGS |
5030 | (W misc) The version string contains invalid characters at the end, which |
5031 | are being ignored. | |
808ee47e | 5032 | |
7e1af8bc | 5033 | =item Warning: something's wrong |
5f05dabc | 5034 | |
5035 | (W) You passed warn() an empty string (the equivalent of C<warn "">) or | |
ec8bb14c | 5036 | you called it with no args and C<$@> was empty. |
5f05dabc | 5037 | |
f86702cc | 5038 | =item Warning: unable to close filehandle %s properly |
a0d0e21e | 5039 | |
be771a83 GS |
5040 | (S) The implicit close() done by an open() got an error indication on |
5041 | the close(). This usually indicates your file system ran out of disk | |
5042 | space. | |
a0d0e21e | 5043 | |
5f05dabc | 5044 | =item Warning: Use of "%s" without parentheses is ambiguous |
a0d0e21e | 5045 | |
be771a83 GS |
5046 | (S ambiguous) You wrote a unary operator followed by something that |
5047 | looks like a binary operator that could also have been interpreted as a | |
5048 | term or unary operator. For instance, if you know that the rand | |
5049 | function has a default argument of 1.0, and you write | |
a0d0e21e LW |
5050 | |
5051 | rand + 5; | |
5052 | ||
5053 | you may THINK you wrote the same thing as | |
5054 | ||
5055 | rand() + 5; | |
5056 | ||
5057 | but in actual fact, you got | |
5058 | ||
5059 | rand(+5); | |
5060 | ||
5f05dabc | 5061 | So put in parentheses to say what you really mean. |
a0d0e21e | 5062 | |
4b3603a4 JH |
5063 | =item Wide character in %s |
5064 | ||
c8f79457 | 5065 | (S utf8) Perl met a wide character (>255) when it wasn't expecting |
cd28123a JH |
5066 | one. This warning is by default on for I/O (like print). The easiest |
5067 | way to quiet this warning is simply to add the C<:utf8> layer to the | |
5068 | output, e.g. C<binmode STDOUT, ':utf8'>. Another way to turn off the | |
5069 | warning is to add C<no warnings 'utf8';> but that is often closer to | |
5070 | cheating. In general, you are supposed to explicitly mark the | |
5071 | filehandle with an encoding, see L<open> and L<perlfunc/binmode>. | |
4b3603a4 | 5072 | |
49704364 WL |
5073 | =item Within []-length '%c' not allowed |
5074 | ||
5075 | (F) The count in the (un)pack template may be replaced by C<[TEMPLATE]> only if | |
5076 | C<TEMPLATE> always matches the same amount of packed bytes that can be | |
5077 | determined from the template alone. This is not possible if it contains an | |
5078 | of the codes @, /, U, u, w or a *-length. Redesign the template. | |
5079 | ||
9a7dcd9c | 5080 | =item write() on closed filehandle %s |
a0d0e21e | 5081 | |
be771a83 | 5082 | (W closed) The filehandle you're writing to got itself closed sometime |
c289d2f7 | 5083 | before now. Check your control flow. |
a0d0e21e | 5084 | |
b4581f09 JH |
5085 | =item %s "\x%s" does not map to Unicode |
5086 | ||
5087 | When reading in different encodings Perl tries to map everything | |
5088 | into Unicode characters. The bytes you read in are not legal in | |
5089 | this encoding, for example | |
5090 | ||
5091 | utf8 "\xE4" does not map to Unicode | |
5092 | ||
5093 | if you try to read in the a-diaereses Latin-1 as UTF-8. | |
5094 | ||
49704364 | 5095 | =item 'X' outside of string |
a0d0e21e | 5096 | |
49704364 WL |
5097 | (F) You had a (un)pack template that specified a relative position before |
5098 | the beginning of the string being (un)packed. See L<perlfunc/pack>. | |
a0d0e21e | 5099 | |
49704364 | 5100 | =item 'x' outside of string in unpack |
a0d0e21e LW |
5101 | |
5102 | (F) You had a pack template that specified a relative position after | |
5103 | the end of the string being unpacked. See L<perlfunc/pack>. | |
5104 | ||
a0d0e21e LW |
5105 | =item YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET! |
5106 | ||
5f05dabc | 5107 | (F) And you probably never will, because you probably don't have the |
a0d0e21e | 5108 | sources to your kernel, and your vendor probably doesn't give a rip |
1b1f1335 | 5109 | about what you want. Your best bet is to put a setuid C wrapper around |
496a33f5 | 5110 | your script. |
a0d0e21e LW |
5111 | |
5112 | =item You need to quote "%s" | |
5113 | ||
be771a83 GS |
5114 | (W syntax) You assigned a bareword as a signal handler name. |
5115 | Unfortunately, you already have a subroutine of that name declared, | |
5116 | which means that Perl 5 will try to call the subroutine when the | |
5117 | assignment is executed, which is probably not what you want. (If it IS | |
5118 | what you want, put an & in front.) | |
a0d0e21e | 5119 | |
6cfd5ea7 JH |
5120 | =item Your random numbers are not that random |
5121 | ||
5122 | (F) When trying to initialise the random seed for hashes, Perl could | |
5123 | not get any randomness out of your system. This usually indicates | |
5124 | Something Very Wrong. | |
5125 | ||
a0d0e21e LW |
5126 | =back |
5127 | ||
00eb3f2b RGS |
5128 | =head1 SEE ALSO |
5129 | ||
5130 | L<warnings>, L<perllexwarn>. | |
5131 | ||
56e90b21 | 5132 | =cut |