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