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). | |
11 | (D) A deprecation (optional). | |
e476b1b5 | 12 | (S) A severe warning (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 | ||
30 | Default warnings are always enabled unless they are explicitly disabled | |
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 | |
8ea97a1e | 134 | =item %s argument is not a HASH or ARRAY element |
a0d0e21e | 135 | |
8ea97a1e | 136 | (F) The argument to exists() must be a hash or array element, such as: |
a0d0e21e LW |
137 | |
138 | $foo{$bar} | |
cb4f522a | 139 | $ref->{"susie"}[12] |
a0d0e21e | 140 | |
8ea97a1e | 141 | =item %s argument is not a HASH or ARRAY element or slice |
5f05dabc | 142 | |
be771a83 GS |
143 | (F) The argument to delete() must be either a hash or array element, |
144 | such as: | |
5f05dabc | 145 | |
146 | $foo{$bar} | |
cb4f522a | 147 | $ref->{"susie"}[12] |
5f05dabc | 148 | |
8ea97a1e | 149 | or a hash or array slice, such as: |
5f05dabc | 150 | |
6df41af2 GS |
151 | @foo[$bar, $baz, $xyzzy] |
152 | @{$ref->[12]}{"susie", "queue"} | |
5315574d | 153 | |
6df41af2 | 154 | =item %s argument is not a subroutine name |
a0d0e21e | 155 | |
6df41af2 | 156 | (F) The argument to exists() for C<exists &sub> must be a subroutine |
be771a83 GS |
157 | name, and not a subroutine call. C<exists &sub()> will generate this |
158 | error. | |
a0d0e21e | 159 | |
f86702cc | 160 | =item Argument "%s" isn't numeric%s |
a0d0e21e | 161 | |
be771a83 GS |
162 | (W numeric) The indicated string was fed as an argument to an operator |
163 | that expected a numeric value instead. If you're fortunate the message | |
164 | will identify which operator was so unfortunate. | |
a0d0e21e | 165 | |
b4581f09 JH |
166 | =item Argument list not closed for PerlIO layer "%s" |
167 | ||
168 | (W layer) When pushing a layer with arguments onto the Perl I/O system you | |
169 | forgot the ) that closes the argument list. (Layers take care of transforming | |
170 | data between external and internal representations.) Perl stopped parsing | |
171 | the layer list at this point and did not attempt to push this layer. | |
172 | If your program didn't explicitly request the failing operation, it may be | |
173 | the result of the value of the environment variable PERLIO. | |
174 | ||
a0d0e21e LW |
175 | =item Array @%s missing the @ in argument %d of %s() |
176 | ||
75b44862 GS |
177 | (D deprecated) Really old Perl let you omit the @ on array names in some |
178 | spots. This is now heavily deprecated. | |
a0d0e21e LW |
179 | |
180 | =item assertion botched: %s | |
181 | ||
182 | (P) The malloc package that comes with Perl had an internal failure. | |
183 | ||
184 | =item Assertion failed: file "%s" | |
185 | ||
186 | (P) A general assertion failed. The file in question must be examined. | |
187 | ||
188 | =item Assignment to both a list and a scalar | |
189 | ||
190 | (F) If you assign to a conditional operator, the 2nd and 3rd arguments | |
191 | must either both be scalars or both be lists. Otherwise Perl won't | |
192 | know which context to supply to the right side. | |
193 | ||
96ebfdd7 RK |
194 | =item A thread exited while %d threads were running |
195 | ||
196 | (W) When using threaded Perl, a thread (not necessarily the main | |
197 | thread) exited while there were still other threads running. | |
198 | Usually it's a good idea to first collect the return values of the | |
199 | created threads by joining them, and only then exit from the main | |
200 | thread. See L<threads>. | |
201 | ||
2393f1b9 | 202 | =item Attempt to access disallowed key '%s' in a restricted hash |
1b1f1335 | 203 | |
49293501 | 204 | (F) The failing code has attempted to get or set a key which is not in |
2393f1b9 | 205 | the current set of allowed keys of a restricted hash. |
49293501 | 206 | |
81689caa HS |
207 | =item Attempt to bless into a reference |
208 | ||
209 | (F) The CLASSNAME argument to the bless() operator is expected to be | |
210 | the name of the package to bless the resulting object into. You've | |
211 | supplied instead a reference to something: perhaps you wrote | |
212 | ||
213 | bless $self, $proto; | |
214 | ||
215 | when you intended | |
216 | ||
217 | bless $self, ref($proto) || $proto; | |
218 | ||
219 | If you actually want to bless into the stringified version | |
220 | of the reference supplied, you need to stringify it yourself, for | |
221 | example by: | |
222 | ||
223 | bless $self, "$proto"; | |
224 | ||
96ebfdd7 RK |
225 | =item Attempt to delete disallowed key '%s' from a restricted hash |
226 | ||
227 | (F) The failing code attempted to delete from a restricted hash a key | |
228 | which is not in its key set. | |
229 | ||
230 | =item Attempt to delete readonly key '%s' from a restricted hash | |
231 | ||
232 | (F) The failing code attempted to delete a key whose value has been | |
233 | declared readonly from a restricted hash. | |
234 | ||
a0d0e21e LW |
235 | =item Attempt to free non-arena SV: 0x%lx |
236 | ||
be771a83 GS |
237 | (P internal) All SV objects are supposed to be allocated from arenas |
238 | that will be garbage collected on exit. An SV was discovered to be | |
239 | outside any of those arenas. | |
a0d0e21e | 240 | |
54310121 | 241 | =item Attempt to free nonexistent shared string |
bbce6d69 | 242 | |
be771a83 GS |
243 | (P internal) Perl maintains a reference counted internal table of |
244 | strings to optimize the storage and access of hash keys and other | |
245 | strings. This indicates someone tried to decrement the reference count | |
246 | of a string that can no longer be found in the table. | |
bbce6d69 | 247 | |
a0d0e21e LW |
248 | =item Attempt to free temp prematurely |
249 | ||
be771a83 GS |
250 | (W debugging) Mortalized values are supposed to be freed by the |
251 | free_tmps() routine. This indicates that something else is freeing the | |
252 | SV before the free_tmps() routine gets a chance, which means that the | |
253 | free_tmps() routine will be freeing an unreferenced scalar when it does | |
254 | try to free it. | |
a0d0e21e LW |
255 | |
256 | =item Attempt to free unreferenced glob pointers | |
257 | ||
e476b1b5 | 258 | (P internal) The reference counts got screwed up on symbol aliases. |
a0d0e21e LW |
259 | |
260 | =item Attempt to free unreferenced scalar | |
261 | ||
be771a83 GS |
262 | (W internal) Perl went to decrement the reference count of a scalar to |
263 | see if it would go to 0, and discovered that it had already gone to 0 | |
264 | earlier, and should have been freed, and in fact, probably was freed. | |
265 | This could indicate that SvREFCNT_dec() was called too many times, or | |
266 | that SvREFCNT_inc() was called too few times, or that the SV was | |
267 | mortalized when it shouldn't have been, or that memory has been | |
268 | corrupted. | |
a0d0e21e | 269 | |
dcdda58d GS |
270 | =item Attempt to join self |
271 | ||
272 | (F) You tried to join a thread from within itself, which is an | |
be771a83 GS |
273 | impossible task. You may be joining the wrong thread, or you may need |
274 | to move the join() to some other thread. | |
dcdda58d | 275 | |
84902520 TB |
276 | =item Attempt to pack pointer to temporary value |
277 | ||
be771a83 GS |
278 | (W pack) You tried to pass a temporary value (like the result of a |
279 | function, or a computed expression) to the "p" pack() template. This | |
280 | means the result contains a pointer to a location that could become | |
281 | invalid anytime, even before the end of the current statement. Use | |
282 | literals or global values as arguments to the "p" pack() template to | |
283 | avoid this warning. | |
84902520 | 284 | |
b7a902f4 | 285 | =item Attempt to use reference as lvalue in substr |
286 | ||
be771a83 GS |
287 | (W substr) You supplied a reference as the first argument to substr() |
288 | used as an lvalue, which is pretty strange. Perhaps you forgot to | |
289 | dereference it first. See L<perlfunc/substr>. | |
b7a902f4 | 290 | |
dc26df50 | 291 | =item Bad arg length for %s, is %d, should be %s |
a0d0e21e | 292 | |
be771a83 GS |
293 | (F) You passed a buffer of the wrong size to one of msgctl(), semctl() |
294 | or shmctl(). In C parlance, the correct sizes are, respectively, | |
5f05dabc | 295 | S<sizeof(struct msqid_ds *)>, S<sizeof(struct semid_ds *)>, and |
a0d0e21e LW |
296 | S<sizeof(struct shmid_ds *)>. |
297 | ||
7a95317d GS |
298 | =item Bad evalled substitution pattern |
299 | ||
496a33f5 | 300 | (F) You've used the C</e> switch to evaluate the replacement for a |
7a95317d GS |
301 | substitution, but perl found a syntax error in the code to evaluate, |
302 | most likely an unexpected right brace '}'. | |
303 | ||
a0d0e21e LW |
304 | =item Bad filehandle: %s |
305 | ||
be771a83 GS |
306 | (F) A symbol was passed to something wanting a filehandle, but the |
307 | symbol has no filehandle associated with it. Perhaps you didn't do an | |
308 | open(), or did it in another package. | |
a0d0e21e LW |
309 | |
310 | =item Bad free() ignored | |
311 | ||
be771a83 GS |
312 | (S malloc) An internal routine called free() on something that had never |
313 | been malloc()ed in the first place. Mandatory, but can be disabled by | |
9ea8bc6d | 314 | setting environment variable C<PERL_BADFREE> to 0. |
33c8a3fe | 315 | |
9ea8bc6d | 316 | This message can be seen quite often with DB_File on systems with "hard" |
be771a83 GS |
317 | dynamic linking, like C<AIX> and C<OS/2>. It is a bug of C<Berkeley DB> |
318 | which is left unnoticed if C<DB> uses I<forgiving> system malloc(). | |
a0d0e21e | 319 | |
aa689395 | 320 | =item Bad hash |
321 | ||
322 | (P) One of the internal hash routines was passed a null HV pointer. | |
323 | ||
6df41af2 GS |
324 | =item Badly placed ()'s |
325 | ||
326 | (A) You've accidentally run your script through B<csh> instead | |
327 | of Perl. Check the #! line, or manually feed your script into | |
328 | Perl yourself. | |
329 | ||
a0d0e21e LW |
330 | =item Bad name after %s:: |
331 | ||
be771a83 GS |
332 | (F) You started to name a symbol by using a package prefix, and then |
333 | didn't finish the symbol. In particular, you can't interpolate outside | |
334 | of quotes, so | |
a0d0e21e LW |
335 | |
336 | $var = 'myvar'; | |
337 | $sym = mypack::$var; | |
338 | ||
339 | is not the same as | |
340 | ||
341 | $var = 'myvar'; | |
342 | $sym = "mypack::$var"; | |
343 | ||
4ad56ec9 IZ |
344 | =item Bad realloc() ignored |
345 | ||
be771a83 GS |
346 | (S malloc) An internal routine called realloc() on something that had |
347 | never been malloc()ed in the first place. Mandatory, but can be disabled | |
348 | by setting environment variable C<PERL_BADFREE> to 1. | |
4ad56ec9 | 349 | |
a0d0e21e LW |
350 | =item Bad symbol for array |
351 | ||
352 | (P) An internal request asked to add an array entry to something that | |
353 | wasn't a symbol table entry. | |
354 | ||
355 | =item Bad symbol for filehandle | |
356 | ||
be771a83 GS |
357 | (P) An internal request asked to add a filehandle entry to something |
358 | that wasn't a symbol table entry. | |
a0d0e21e LW |
359 | |
360 | =item Bad symbol for hash | |
361 | ||
362 | (P) An internal request asked to add a hash entry to something that | |
363 | wasn't a symbol table entry. | |
364 | ||
34d09196 GS |
365 | =item Bareword found in conditional |
366 | ||
be771a83 GS |
367 | (W bareword) The compiler found a bareword where it expected a |
368 | conditional, which often indicates that an || or && was parsed as part | |
369 | of the last argument of the previous construct, for example: | |
34d09196 GS |
370 | |
371 | open FOO || die; | |
372 | ||
be771a83 GS |
373 | It may also indicate a misspelled constant that has been interpreted as |
374 | a bareword: | |
34d09196 GS |
375 | |
376 | use constant TYPO => 1; | |
377 | if (TYOP) { print "foo" } | |
378 | ||
379 | The C<strict> pragma is useful in avoiding such errors. | |
380 | ||
6df41af2 GS |
381 | =item Bareword "%s" not allowed while "strict subs" in use |
382 | ||
383 | (F) With "strict subs" in use, a bareword is only allowed as a | |
be771a83 GS |
384 | subroutine identifier, in curly brackets or to the left of the "=>" |
385 | symbol. Perhaps you need to predeclare a subroutine? | |
6df41af2 GS |
386 | |
387 | =item Bareword "%s" refers to nonexistent package | |
388 | ||
be771a83 GS |
389 | (W bareword) You used a qualified bareword of the form C<Foo::>, but the |
390 | compiler saw no other uses of that namespace before that point. Perhaps | |
391 | you need to predeclare a package? | |
6df41af2 | 392 | |
a0d0e21e LW |
393 | =item BEGIN failed--compilation aborted |
394 | ||
be771a83 GS |
395 | (F) An untrapped exception was raised while executing a BEGIN |
396 | subroutine. Compilation stops immediately and the interpreter is | |
397 | exited. | |
a0d0e21e | 398 | |
68dc0745 | 399 | =item BEGIN not safe after errors--compilation aborted |
400 | ||
401 | (F) Perl found a C<BEGIN {}> subroutine (or a C<use> directive, which | |
be771a83 GS |
402 | implies a C<BEGIN {}>) after one or more compilation errors had already |
403 | occurred. Since the intended environment for the C<BEGIN {}> could not | |
404 | be guaranteed (due to the errors), and since subsequent code likely | |
405 | depends on its correct operation, Perl just gave up. | |
68dc0745 | 406 | |
6df41af2 GS |
407 | =item \1 better written as $1 |
408 | ||
be771a83 GS |
409 | (W syntax) Outside of patterns, backreferences live on as variables. |
410 | The use of backslashes is grandfathered on the right-hand side of a | |
411 | substitution, but stylistically it's better to use the variable form | |
412 | because other Perl programmers will expect it, and it works better if | |
413 | there are more than 9 backreferences. | |
6df41af2 | 414 | |
252aa082 JH |
415 | =item Binary number > 0b11111111111111111111111111111111 non-portable |
416 | ||
e476b1b5 | 417 | (W portable) The binary number you specified is larger than 2**32-1 |
9e24b6e2 JH |
418 | (4294967295) and therefore non-portable between systems. See |
419 | L<perlport> for more on portability concerns. | |
252aa082 | 420 | |
69282e91 | 421 | =item bind() on closed socket %s |
a0d0e21e | 422 | |
be771a83 GS |
423 | (W closed) You tried to do a bind on a closed socket. Did you forget to |
424 | check the return value of your socket() call? See L<perlfunc/bind>. | |
a0d0e21e | 425 | |
c289d2f7 JH |
426 | =item binmode() on closed filehandle %s |
427 | ||
428 | (W unopened) You tried binmode() on a filehandle that was never opened. | |
429 | Check you control flow and number of arguments. | |
430 | ||
c5a0f51a JH |
431 | =item Bit vector size > 32 non-portable |
432 | ||
e476b1b5 | 433 | (W portable) Using bit vector sizes larger than 32 is non-portable. |
c5a0f51a | 434 | |
4633a7c4 LW |
435 | =item Bizarre copy of %s in %s |
436 | ||
be771a83 | 437 | (P) Perl detected an attempt to copy an internal value that is not |
b45f050a | 438 | copyable. |
4633a7c4 | 439 | |
f675dbe5 CB |
440 | =item Buffer overflow in prime_env_iter: %s |
441 | ||
be771a83 GS |
442 | (W internal) A warning peculiar to VMS. While Perl was preparing to |
443 | iterate over %ENV, it encountered a logical name or symbol definition | |
444 | which was too long, so it was truncated to the string shown. | |
f675dbe5 | 445 | |
a0d0e21e LW |
446 | =item Callback called exit |
447 | ||
4929bf7b | 448 | (F) A subroutine invoked from an external package via call_sv() |
a0d0e21e LW |
449 | exited by calling exit. |
450 | ||
6df41af2 | 451 | =item %s() called too early to check prototype |
f675dbe5 | 452 | |
be771a83 GS |
453 | (W prototype) You've called a function that has a prototype before the |
454 | parser saw a definition or declaration for it, and Perl could not check | |
455 | that the call conforms to the prototype. You need to either add an | |
456 | early prototype declaration for the subroutine in question, or move the | |
457 | subroutine definition ahead of the call to get proper prototype | |
458 | checking. Alternatively, if you are certain that you're calling the | |
459 | function correctly, you may put an ampersand before the name to avoid | |
460 | the warning. See L<perlsub>. | |
f675dbe5 | 461 | |
49704364 | 462 | =item Cannot compress integer in pack |
0258719b NC |
463 | |
464 | (F) An argument to pack("w",...) was too large to compress. The BER | |
465 | compressed integer format can only be used with positive integers, and you | |
466 | attempted to compress Infinity or a very large number (> 1e308). | |
467 | See L<perlfunc/pack>. | |
468 | ||
49704364 | 469 | =item Cannot compress negative numbers in pack |
0258719b NC |
470 | |
471 | (F) An argument to pack("w",...) was negative. The BER compressed integer | |
472 | format can only be used with positive integers. See L<perlfunc/pack>. | |
473 | ||
96ebfdd7 RK |
474 | =item Can only compress unsigned integers in pack |
475 | ||
476 | (F) An argument to pack("w",...) was not an integer. The BER compressed | |
477 | integer format can only be used with positive integers, and you attempted | |
478 | to compress something else. See L<perlfunc/pack>. | |
479 | ||
a0d0e21e LW |
480 | =item Can't bless non-reference value |
481 | ||
482 | (F) Only hard references may be blessed. This is how Perl "enforces" | |
483 | encapsulation of objects. See L<perlobj>. | |
484 | ||
a0d0e21e LW |
485 | =item Can't call method "%s" in empty package "%s" |
486 | ||
487 | (F) You called a method correctly, and it correctly indicated a package | |
488 | functioning as a class, but that package doesn't have ANYTHING defined | |
489 | in it, let alone methods. See L<perlobj>. | |
490 | ||
6df41af2 GS |
491 | =item Can't call method "%s" on an undefined value |
492 | ||
493 | (F) You used the syntax of a method call, but the slot filled by the | |
be771a83 GS |
494 | object reference or package name contains an undefined value. Something |
495 | like this will reproduce the error: | |
6df41af2 GS |
496 | |
497 | $BADREF = undef; | |
498 | process $BADREF 1,2,3; | |
499 | $BADREF->process(1,2,3); | |
500 | ||
a0d0e21e LW |
501 | =item Can't call method "%s" on unblessed reference |
502 | ||
54310121 | 503 | (F) A method call must know in what package it's supposed to run. It |
be771a83 GS |
504 | ordinarily finds this out from the object reference you supply, but you |
505 | didn't supply an object reference in this case. A reference isn't an | |
506 | object reference until it has been blessed. See L<perlobj>. | |
a0d0e21e LW |
507 | |
508 | =item Can't call method "%s" without a package or object reference | |
509 | ||
510 | (F) You used the syntax of a method call, but the slot filled by the | |
be771a83 GS |
511 | object reference or package name contains an expression that returns a |
512 | defined value which is neither an object reference nor a package name. | |
72b5445b GS |
513 | Something like this will reproduce the error: |
514 | ||
515 | $BADREF = 42; | |
516 | process $BADREF 1,2,3; | |
517 | $BADREF->process(1,2,3); | |
518 | ||
a0d0e21e LW |
519 | =item Can't chdir to %s |
520 | ||
521 | (F) You called C<perl -x/foo/bar>, but C</foo/bar> is not a directory | |
522 | that you can chdir to, possibly because it doesn't exist. | |
523 | ||
0545a864 | 524 | =item Can't check filesystem of script "%s" for nosuid |
104d25b7 | 525 | |
be771a83 GS |
526 | (P) For some reason you can't check the filesystem of the script for |
527 | nosuid. | |
104d25b7 | 528 | |
6df41af2 GS |
529 | =item Can't coerce array into hash |
530 | ||
531 | (F) You used an array where a hash was expected, but the array has no | |
532 | information on how to map from keys to array indices. You can do that | |
533 | only with arrays that have a hash reference at index 0. | |
534 | ||
a0d0e21e LW |
535 | =item Can't coerce %s to integer in %s |
536 | ||
537 | (F) Certain types of SVs, in particular real symbol table entries | |
55497cff | 538 | (typeglobs), can't be forced to stop being what they are. So you can't |
a0d0e21e LW |
539 | say things like: |
540 | ||
541 | *foo += 1; | |
542 | ||
543 | You CAN say | |
544 | ||
545 | $foo = *foo; | |
546 | $foo += 1; | |
547 | ||
548 | but then $foo no longer contains a glob. | |
549 | ||
550 | =item Can't coerce %s to number in %s | |
551 | ||
552 | (F) Certain types of SVs, in particular real symbol table entries | |
55497cff | 553 | (typeglobs), can't be forced to stop being what they are. |
a0d0e21e LW |
554 | |
555 | =item Can't coerce %s to string in %s | |
556 | ||
557 | (F) Certain types of SVs, in particular real symbol table entries | |
55497cff | 558 | (typeglobs), can't be forced to stop being what they are. |
a0d0e21e LW |
559 | |
560 | =item Can't create pipe mailbox | |
561 | ||
be771a83 GS |
562 | (P) An error peculiar to VMS. The process is suffering from exhausted |
563 | quotas or other plumbing problems. | |
a0d0e21e | 564 | |
eb64745e | 565 | =item Can't declare class for non-scalar %s in "%s" |
a0d0e21e | 566 | |
2f7e735d AMS |
567 | (F) Currently, only scalar variables can be declared with a specific |
568 | class qualifier in a "my" or "our" declaration. The semantics may be | |
569 | extended for other types of variables in future. | |
eb64745e GS |
570 | |
571 | =item Can't declare %s in "%s" | |
572 | ||
573 | (F) Only scalar, array, and hash variables may be declared as "my" or | |
574 | "our" variables. They must have ordinary identifiers as names. | |
a0d0e21e | 575 | |
6df41af2 GS |
576 | =item Can't do inplace edit: %s is not a regular file |
577 | ||
be771a83 GS |
578 | (S inplace) You tried to use the B<-i> switch on a special file, such as |
579 | a file in /dev, or a FIFO. The file was ignored. | |
6df41af2 | 580 | |
a0d0e21e LW |
581 | =item Can't do inplace edit on %s: %s |
582 | ||
be771a83 GS |
583 | (S inplace) The creation of the new file failed for the indicated |
584 | reason. | |
a0d0e21e | 585 | |
54310121 | 586 | =item Can't do inplace edit without backup |
a0d0e21e | 587 | |
be771a83 GS |
588 | (F) You're on a system such as MS-DOS that gets confused if you try |
589 | reading from a deleted (but still opened) file. You have to say | |
590 | C<-i.bak>, or some such. | |
a0d0e21e | 591 | |
10f9c03d | 592 | =item Can't do inplace edit: %s would not be unique |
a0d0e21e | 593 | |
e476b1b5 | 594 | (S inplace) Your filesystem does not support filenames longer than 14 |
10f9c03d CK |
595 | characters and Perl was unable to create a unique filename during |
596 | inplace editing with the B<-i> switch. The file was ignored. | |
a0d0e21e | 597 | |
7253e4e3 | 598 | =item Can't do {n,m} with n > m in regex; marked by <-- HERE in m/%s/ |
a0d0e21e | 599 | |
b45f050a | 600 | (F) Minima must be less than or equal to maxima. If you really want your |
7253e4e3 | 601 | regexp to match something 0 times, just put {0}. The <-- HERE shows in the |
b45f050a | 602 | regular expression about where the problem was discovered. See L<perlre>. |
a0d0e21e LW |
603 | |
604 | =item Can't do setegid! | |
605 | ||
be771a83 GS |
606 | (P) The setegid() call failed for some reason in the setuid emulator of |
607 | suidperl. | |
a0d0e21e LW |
608 | |
609 | =item Can't do seteuid! | |
610 | ||
611 | (P) The setuid emulator of suidperl failed for some reason. | |
612 | ||
613 | =item Can't do setuid | |
614 | ||
be771a83 GS |
615 | (F) This typically means that ordinary perl tried to exec suidperl to do |
616 | setuid emulation, but couldn't exec it. It looks for a name of the form | |
617 | sperl5.000 in the same directory that the perl executable resides under | |
618 | the name perl5.000, typically /usr/local/bin on Unix machines. If the | |
619 | file is there, check the execute permissions. If it isn't, ask your | |
620 | sysadmin why he and/or she removed it. | |
a0d0e21e LW |
621 | |
622 | =item Can't do waitpid with flags | |
623 | ||
be771a83 GS |
624 | (F) This machine doesn't have either waitpid() or wait4(), so only |
625 | waitpid() without flags is emulated. | |
a0d0e21e | 626 | |
a0d0e21e LW |
627 | =item Can't emulate -%s on #! line |
628 | ||
be771a83 GS |
629 | (F) The #! line specifies a switch that doesn't make sense at this |
630 | point. For example, it'd be kind of silly to put a B<-x> on the #! | |
631 | line. | |
a0d0e21e | 632 | |
1109a392 MHM |
633 | =item Can't %s %s-endian %ss on this platform |
634 | ||
635 | (F) Your platform's byte-order is neither big-endian nor little-endian, | |
636 | or it has a very strange pointer size. Packing and unpacking big- or | |
637 | little-endian floating point values and pointers may not be possible. | |
638 | See L<perlfunc/pack>. | |
639 | ||
a0d0e21e LW |
640 | =item Can't exec "%s": %s |
641 | ||
d1be9408 | 642 | (W exec) A system(), exec(), or piped open call could not execute the |
be771a83 GS |
643 | named program for the indicated reason. Typical reasons include: the |
644 | permissions were wrong on the file, the file wasn't found in | |
645 | C<$ENV{PATH}>, the executable in question was compiled for another | |
646 | architecture, or the #! line in a script points to an interpreter that | |
647 | can't be run for similar reasons. (Or maybe your system doesn't support | |
648 | #! at all.) | |
a0d0e21e LW |
649 | |
650 | =item Can't exec %s | |
651 | ||
be771a83 GS |
652 | (F) Perl was trying to execute the indicated program for you because |
653 | that's what the #! line said. If that's not what you wanted, you may | |
654 | need to mention "perl" on the #! line somewhere. | |
a0d0e21e LW |
655 | |
656 | =item Can't execute %s | |
657 | ||
be771a83 GS |
658 | (F) You used the B<-S> switch, but the copies of the script to execute |
659 | found in the PATH did not have correct permissions. | |
2a92aaa0 | 660 | |
6df41af2 | 661 | =item Can't find an opnumber for "%s" |
2a92aaa0 | 662 | |
be771a83 GS |
663 | (F) A string of a form C<CORE::word> was given to prototype(), but there |
664 | is no builtin with the name C<word>. | |
6df41af2 | 665 | |
56ca2fc0 JH |
666 | =item Can't find %s character property "%s" |
667 | ||
668 | (F) You used C<\p{}> or C<\P{}> but the character property by that name | |
89d60977 | 669 | could not be found. Maybe you misspelled the name of the property |
56ca2fc0 JH |
670 | (remember that the names of character properties consist only of |
671 | alphanumeric characters), or maybe you forgot the C<Is> or C<In> prefix? | |
672 | ||
6df41af2 GS |
673 | =item Can't find label %s |
674 | ||
be771a83 GS |
675 | (F) You said to goto a label that isn't mentioned anywhere that it's |
676 | possible for us to go to. See L<perlfunc/goto>. | |
2a92aaa0 GS |
677 | |
678 | =item Can't find %s on PATH | |
679 | ||
be771a83 GS |
680 | (F) You used the B<-S> switch, but the script to execute could not be |
681 | found in the PATH. | |
a0d0e21e | 682 | |
6df41af2 | 683 | =item Can't find %s on PATH, '.' not in PATH |
a0d0e21e | 684 | |
be771a83 GS |
685 | (F) You used the B<-S> switch, but the script to execute could not be |
686 | found in the PATH, or at least not with the correct permissions. The | |
687 | script exists in the current directory, but PATH prohibits running it. | |
a0d0e21e | 688 | |
96ebfdd7 RK |
689 | =item Can't find %s property definition %s |
690 | ||
691 | (F) You may have tried to use C<\p> which means a Unicode property (for | |
692 | example C<\p{Lu}> is all uppercase letters). If you did mean to use a | |
693 | Unicode property, see L<perlunicode> for the list of known properties. | |
694 | If you didn't mean to use a Unicode property, escape the C<\p>, either | |
695 | by C<\\p> (just the C<\p>) or by C<\Q\p> (the rest of the string, until | |
696 | possible C<\E>). | |
697 | ||
a0d0e21e LW |
698 | =item Can't find string terminator %s anywhere before EOF |
699 | ||
be771a83 GS |
700 | (F) Perl strings can stretch over multiple lines. This message means |
701 | that the closing delimiter was omitted. Because bracketed quotes count | |
702 | nesting levels, the following is missing its final parenthesis: | |
a0d0e21e | 703 | |
fb73857a | 704 | print q(The character '(' starts a side comment.); |
705 | ||
be771a83 GS |
706 | If you're getting this error from a here-document, you may have included |
707 | unseen whitespace before or after your closing tag. A good programmer's | |
708 | editor will have a way to help you find these characters. | |
a0d0e21e LW |
709 | |
710 | =item Can't fork | |
711 | ||
be771a83 GS |
712 | (F) A fatal error occurred while trying to fork while opening a |
713 | pipeline. | |
a0d0e21e | 714 | |
748a9306 LW |
715 | =item Can't get filespec - stale stat buffer? |
716 | ||
be771a83 GS |
717 | (S) A warning peculiar to VMS. This arises because of the difference |
718 | between access checks under VMS and under the Unix model Perl assumes. | |
719 | Under VMS, access checks are done by filename, rather than by bits in | |
720 | the stat buffer, so that ACLs and other protections can be taken into | |
721 | account. Unfortunately, Perl assumes that the stat buffer contains all | |
722 | the necessary information, and passes it, instead of the filespec, to | |
723 | the access checking routine. It will try to retrieve the filespec using | |
724 | the device name and FID present in the stat buffer, but this works only | |
725 | if you haven't made a subsequent call to the CRTL stat() routine, | |
726 | because the device name is overwritten with each call. If this warning | |
727 | appears, the name lookup failed, and the access checking routine gave up | |
728 | and returned FALSE, just to be conservative. (Note: The access checking | |
729 | routine knows about the Perl C<stat> operator and file tests, so you | |
730 | shouldn't ever see this warning in response to a Perl command; it arises | |
731 | only if some internal code takes stat buffers lightly.) | |
748a9306 | 732 | |
a0d0e21e LW |
733 | =item Can't get pipe mailbox device name |
734 | ||
be771a83 GS |
735 | (P) An error peculiar to VMS. After creating a mailbox to act as a |
736 | pipe, Perl can't retrieve its name for later use. | |
a0d0e21e LW |
737 | |
738 | =item Can't get SYSGEN parameter value for MAXBUF | |
739 | ||
748a9306 LW |
740 | (P) An error peculiar to VMS. Perl asked $GETSYI how big you want your |
741 | mailbox buffers to be, and didn't get an answer. | |
a0d0e21e | 742 | |
6df41af2 | 743 | =item Can't "goto" into the middle of a foreach loop |
a0d0e21e | 744 | |
be771a83 GS |
745 | (F) A "goto" statement was executed to jump into the middle of a foreach |
746 | loop. You can't get there from here. See L<perlfunc/goto>. | |
6df41af2 GS |
747 | |
748 | =item Can't "goto" out of a pseudo block | |
749 | ||
be771a83 GS |
750 | (F) A "goto" statement was executed to jump out of what might look like |
751 | a block, except that it isn't a proper block. This usually occurs if | |
752 | you tried to jump out of a sort() block or subroutine, which is a no-no. | |
753 | See L<perlfunc/goto>. | |
a0d0e21e | 754 | |
b150fb22 RH |
755 | =item Can't goto subroutine from an eval-string |
756 | ||
be771a83 GS |
757 | (F) The "goto subroutine" call can't be used to jump out of an eval |
758 | "string". (You can use it to jump out of an eval {BLOCK}, but you | |
759 | probably don't want to.) | |
b150fb22 | 760 | |
6df41af2 GS |
761 | =item Can't goto subroutine outside a subroutine |
762 | ||
be771a83 GS |
763 | (F) The deeply magical "goto subroutine" call can only replace one |
764 | subroutine call for another. It can't manufacture one out of whole | |
765 | cloth. In general you should be calling it out of only an AUTOLOAD | |
766 | routine anyway. See L<perlfunc/goto>. | |
6df41af2 | 767 | |
0b5b802d GS |
768 | =item Can't ignore signal CHLD, forcing to default |
769 | ||
be771a83 GS |
770 | (W signal) Perl has detected that it is being run with the SIGCHLD |
771 | signal (sometimes known as SIGCLD) disabled. Since disabling this | |
772 | signal will interfere with proper determination of exit status of child | |
773 | processes, Perl has reset the signal to its default value. This | |
774 | situation typically indicates that the parent program under which Perl | |
775 | may be running (e.g. cron) is being very careless. | |
0b5b802d | 776 | |
6df41af2 | 777 | =item Can't "last" outside a loop block |
4633a7c4 | 778 | |
6df41af2 | 779 | (F) A "last" statement was executed to break out of the current block, |
be771a83 GS |
780 | except that there's this itty bitty problem called there isn't a current |
781 | block. Note that an "if" or "else" block doesn't count as a "loopish" | |
782 | block, as doesn't a block given to sort(), map() or grep(). You can | |
783 | usually double the curlies to get the same effect though, because the | |
784 | inner curlies will be considered a block that loops once. See | |
785 | L<perlfunc/last>. | |
4633a7c4 | 786 | |
b8170e59 JB |
787 | =item Can't load '%s' for module %s |
788 | ||
789 | (F) The module you tried to load failed to load a dynamic extension. This | |
790 | may either mean that you upgraded your version of perl to one that is | |
791 | incompatible with your old dynamic extensions (which is known to happen | |
792 | between major versions of perl), or (more likely) that your dynamic | |
16d98ec5 | 793 | extension was built against an older version of the library that is |
b8170e59 JB |
794 | installed on your system. You may need to rebuild your old dynamic |
795 | extensions. | |
796 | ||
748a9306 LW |
797 | =item Can't localize lexical variable %s |
798 | ||
2ba9eb46 | 799 | (F) You used local on a variable name that was previously declared as a |
748a9306 LW |
800 | lexical variable using "my". This is not allowed. If you want to |
801 | localize a package variable of the same name, qualify it with the | |
802 | package name. | |
803 | ||
6df41af2 | 804 | =item Can't localize through a reference |
4727527e | 805 | |
6df41af2 GS |
806 | (F) You said something like C<local $$ref>, which Perl can't currently |
807 | handle, because when it goes to restore the old value of whatever $ref | |
be771a83 | 808 | pointed to after the scope of the local() is finished, it can't be sure |
64977eb6 | 809 | that $ref will still be a reference. |
4727527e | 810 | |
ea071790 | 811 | =item Can't locate %s |
ec889f3a GS |
812 | |
813 | (F) You said to C<do> (or C<require>, or C<use>) a file that couldn't be | |
814 | found. Perl looks for the file in all the locations mentioned in @INC, | |
be771a83 GS |
815 | unless the file name included the full path to the file. Perhaps you |
816 | need to set the PERL5LIB or PERL5OPT environment variable to say where | |
817 | the extra library is, or maybe the script needs to add the library name | |
818 | to @INC. Or maybe you just misspelled the name of the file. See | |
819 | L<perlfunc/require> and L<lib>. | |
a0d0e21e | 820 | |
6df41af2 GS |
821 | =item Can't locate auto/%s.al in @INC |
822 | ||
be771a83 GS |
823 | (F) A function (or method) was called in a package which allows |
824 | autoload, but there is no function to autoload. Most probable causes | |
825 | are a misprint in a function/method name or a failure to C<AutoSplit> | |
826 | the file, say, by doing C<make install>. | |
6df41af2 | 827 | |
b8170e59 JB |
828 | =item Can't locate loadable object for module %s in @INC |
829 | ||
830 | (F) The module you loaded is trying to load an external library, like | |
831 | for example, C<foo.so> or C<bar.dll>, but the L<DynaLoader> module was | |
832 | unable to locate this library. See L<DynaLoader>. | |
833 | ||
a0d0e21e LW |
834 | =item Can't locate object method "%s" via package "%s" |
835 | ||
836 | (F) You called a method correctly, and it correctly indicated a package | |
837 | functioning as a class, but that package doesn't define that particular | |
2ba9eb46 | 838 | method, nor does any of its base classes. See L<perlobj>. |
a0d0e21e LW |
839 | |
840 | =item Can't locate package %s for @%s::ISA | |
841 | ||
be771a83 GS |
842 | (W syntax) The @ISA array contained the name of another package that |
843 | doesn't seem to exist. | |
a0d0e21e | 844 | |
2f7da168 RK |
845 | =item Can't locate PerlIO%s |
846 | ||
847 | (F) You tried to use in open() a PerlIO layer that does not exist, | |
848 | e.g. open(FH, ">:nosuchlayer", "somefile"). | |
849 | ||
3e3baf6d TB |
850 | =item Can't make list assignment to \%ENV on this system |
851 | ||
be771a83 GS |
852 | (F) List assignment to %ENV is not supported on some systems, notably |
853 | VMS. | |
3e3baf6d | 854 | |
a0d0e21e LW |
855 | =item Can't modify %s in %s |
856 | ||
be771a83 GS |
857 | (F) You aren't allowed to assign to the item indicated, or otherwise try |
858 | to change it, such as with an auto-increment. | |
a0d0e21e | 859 | |
54310121 | 860 | =item Can't modify nonexistent substring |
a0d0e21e LW |
861 | |
862 | (P) The internal routine that does assignment to a substr() was handed | |
863 | a NULL. | |
864 | ||
6df41af2 GS |
865 | =item Can't modify non-lvalue subroutine call |
866 | ||
867 | (F) Subroutines meant to be used in lvalue context should be declared as | |
868 | such, see L<perlsub/"Lvalue subroutines">. | |
869 | ||
5f05dabc | 870 | =item Can't msgrcv to read-only var |
a0d0e21e | 871 | |
5f05dabc | 872 | (F) The target of a msgrcv must be modifiable to be used as a receive |
a0d0e21e LW |
873 | buffer. |
874 | ||
6df41af2 GS |
875 | =item Can't "next" outside a loop block |
876 | ||
877 | (F) A "next" statement was executed to reiterate the current block, but | |
878 | there isn't a current block. Note that an "if" or "else" block doesn't | |
be771a83 GS |
879 | count as a "loopish" block, as doesn't a block given to sort(), map() or |
880 | grep(). You can usually double the curlies to get the same effect | |
881 | though, because the inner curlies will be considered a block that loops | |
882 | once. See L<perlfunc/next>. | |
6df41af2 | 883 | |
a0d0e21e LW |
884 | =item Can't open %s: %s |
885 | ||
c47ff5f1 | 886 | (S inplace) The implicit opening of a file through use of the C<< <> >> |
08e9d68e DD |
887 | filehandle, either implicitly under the C<-n> or C<-p> command-line |
888 | switches, or explicitly, failed for the indicated reason. Usually this | |
be771a83 GS |
889 | is because you don't have read permission for a file which you named on |
890 | the command line. | |
a0d0e21e | 891 | |
9a869a14 RGS |
892 | =item Can't open a reference |
893 | ||
894 | (W io) You tried to open a scalar reference for reading or writing, | |
895 | using the 3-arg open() syntax : | |
896 | ||
897 | open FH, '>', $ref; | |
898 | ||
899 | but your version of perl is compiled without perlio, and this form of | |
900 | open is not supported. | |
901 | ||
a0d0e21e LW |
902 | =item Can't open bidirectional pipe |
903 | ||
be771a83 GS |
904 | (W pipe) You tried to say C<open(CMD, "|cmd|")>, which is not supported. |
905 | You can try any of several modules in the Perl library to do this, such | |
906 | as IPC::Open2. Alternately, direct the pipe's output to a file using | |
907 | ">", and then read it in under a different file handle. | |
a0d0e21e | 908 | |
748a9306 LW |
909 | =item Can't open error file %s as stderr |
910 | ||
be771a83 GS |
911 | (F) An error peculiar to VMS. Perl does its own command line |
912 | redirection, and couldn't open the file specified after '2>' or '2>>' on | |
913 | the command line for writing. | |
748a9306 LW |
914 | |
915 | =item Can't open input file %s as stdin | |
916 | ||
be771a83 GS |
917 | (F) An error peculiar to VMS. Perl does its own command line |
918 | redirection, and couldn't open the file specified after '<' on the | |
919 | command line for reading. | |
748a9306 LW |
920 | |
921 | =item Can't open output file %s as stdout | |
922 | ||
be771a83 GS |
923 | (F) An error peculiar to VMS. Perl does its own command line |
924 | redirection, and couldn't open the file specified after '>' or '>>' on | |
925 | the command line for writing. | |
748a9306 LW |
926 | |
927 | =item Can't open output pipe (name: %s) | |
928 | ||
be771a83 GS |
929 | (P) An error peculiar to VMS. Perl does its own command line |
930 | redirection, and couldn't open the pipe into which to send data destined | |
931 | for stdout. | |
748a9306 | 932 | |
2b8ca739 | 933 | =item Can't open perl script%s |
a0d0e21e LW |
934 | |
935 | (F) The script you specified can't be opened for the indicated reason. | |
936 | ||
fa3aa65a JC |
937 | If you're debugging a script that uses #!, and normally relies on the |
938 | shell's $PATH search, the -S option causes perl to do that search, so | |
939 | you don't have to type the path or C<`which $scriptname`>. | |
940 | ||
6df41af2 GS |
941 | =item Can't read CRTL environ |
942 | ||
943 | (S) A warning peculiar to VMS. Perl tried to read an element of %ENV | |
944 | from the CRTL's internal environment array and discovered the array was | |
945 | missing. You need to figure out where your CRTL misplaced its environ | |
be771a83 GS |
946 | or define F<PERL_ENV_TABLES> (see L<perlvms>) so that environ is not |
947 | searched. | |
6df41af2 | 948 | |
7bac28a0 | 949 | =item Can't redefine active sort subroutine %s |
950 | ||
951 | (F) Perl optimizes the internal handling of sort subroutines and keeps | |
be771a83 GS |
952 | pointers into them. You tried to redefine one such sort subroutine when |
953 | it was currently active, which is not allowed. If you really want to do | |
7bac28a0 | 954 | this, you should write C<sort { &func } @x> instead of C<sort func @x>. |
955 | ||
6df41af2 GS |
956 | =item Can't "redo" outside a loop block |
957 | ||
958 | (F) A "redo" statement was executed to restart the current block, but | |
959 | there isn't a current block. Note that an "if" or "else" block doesn't | |
960 | count as a "loopish" block, as doesn't a block given to sort(), map() | |
961 | or grep(). You can usually double the curlies to get the same effect | |
962 | though, because the inner curlies will be considered a block that | |
963 | loops once. See L<perlfunc/redo>. | |
964 | ||
64977eb6 | 965 | =item Can't remove %s: %s, skipping file |
10f9c03d | 966 | |
be771a83 GS |
967 | (S inplace) You requested an inplace edit without creating a backup |
968 | file. Perl was unable to remove the original file to replace it with | |
969 | the modified file. The file was left unmodified. | |
10f9c03d | 970 | |
a0d0e21e LW |
971 | =item Can't rename %s to %s: %s, skipping file |
972 | ||
e476b1b5 | 973 | (S inplace) The rename done by the B<-i> switch failed for some reason, |
10f9c03d | 974 | probably because you don't have write permission to the directory. |
a0d0e21e | 975 | |
748a9306 LW |
976 | =item Can't reopen input pipe (name: %s) in binary mode |
977 | ||
be771a83 GS |
978 | (P) An error peculiar to VMS. Perl thought stdin was a pipe, and tried |
979 | to reopen it to accept binary data. Alas, it failed. | |
748a9306 | 980 | |
6df41af2 GS |
981 | =item Can't resolve method `%s' overloading `%s' in package `%s' |
982 | ||
be771a83 GS |
983 | (F|P) Error resolving overloading specified by a method name (as opposed |
984 | to a subroutine reference): no such method callable via the package. If | |
985 | method name is C<???>, this is an internal error. | |
6df41af2 | 986 | |
a0d0e21e LW |
987 | =item Can't reswap uid and euid |
988 | ||
be771a83 GS |
989 | (P) The setreuid() call failed for some reason in the setuid emulator of |
990 | suidperl. | |
a0d0e21e | 991 | |
cd06dffe GS |
992 | =item Can't return %s from lvalue subroutine |
993 | ||
be771a83 GS |
994 | (F) Perl detected an attempt to return illegal lvalues (such as |
995 | temporary or readonly values) from a subroutine used as an lvalue. This | |
996 | is not allowed. | |
cd06dffe | 997 | |
96ebfdd7 RK |
998 | =item Can't return outside a subroutine |
999 | ||
1000 | (F) The return statement was executed in mainline code, that is, where | |
1001 | there was no subroutine call to return out of. See L<perlsub>. | |
1002 | ||
78f9721b SM |
1003 | =item Can't return %s to lvalue scalar context |
1004 | ||
1005 | (F) You tried to return a complete array or hash from an lvalue subroutine, | |
1006 | but you called the subroutine in a way that made Perl think you meant | |
1007 | to return only one value. You probably meant to write parentheses around | |
1008 | the call to the subroutine, which tell Perl that the call should be in | |
1009 | list context. | |
1010 | ||
a0d0e21e LW |
1011 | =item Can't stat script "%s" |
1012 | ||
be771a83 GS |
1013 | (P) For some reason you can't fstat() the script even though you have it |
1014 | open already. Bizarre. | |
a0d0e21e LW |
1015 | |
1016 | =item Can't swap uid and euid | |
1017 | ||
be771a83 GS |
1018 | (P) The setreuid() call failed for some reason in the setuid emulator of |
1019 | suidperl. | |
a0d0e21e LW |
1020 | |
1021 | =item Can't take log of %g | |
1022 | ||
fb73857a | 1023 | (F) For ordinary real numbers, you can't take the logarithm of a |
1024 | negative number or zero. There's a Math::Complex package that comes | |
be771a83 GS |
1025 | standard with Perl, though, if you really want to do that for the |
1026 | negative numbers. | |
a0d0e21e LW |
1027 | |
1028 | =item Can't take sqrt of %g | |
1029 | ||
1030 | (F) For ordinary real numbers, you can't take the square root of a | |
fb73857a | 1031 | negative number. There's a Math::Complex package that comes standard |
1032 | with Perl, though, if you really want to do that. | |
a0d0e21e LW |
1033 | |
1034 | =item Can't undef active subroutine | |
1035 | ||
1036 | (F) You can't undefine a routine that's currently running. You can, | |
1037 | however, redefine it while it's running, and you can even undef the | |
1038 | redefined subroutine while the old routine is running. Go figure. | |
1039 | ||
1040 | =item Can't unshift | |
1041 | ||
1042 | (F) You tried to unshift an "unreal" array that can't be unshifted, such | |
1043 | as the main Perl stack. | |
1044 | ||
1045 | =item Can't upgrade that kind of scalar | |
1046 | ||
be771a83 GS |
1047 | (P) The internal sv_upgrade routine adds "members" to an SV, making it |
1048 | into a more specialized kind of SV. The top several SV types are so | |
1049 | specialized, however, that they cannot be interconverted. This message | |
1050 | indicates that such a conversion was attempted. | |
a0d0e21e LW |
1051 | |
1052 | =item Can't upgrade to undef | |
1053 | ||
be771a83 GS |
1054 | (P) The undefined SV is the bottom of the totem pole, in the scheme of |
1055 | upgradability. Upgrading to undef indicates an error in the code | |
1056 | calling sv_upgrade. | |
a0d0e21e | 1057 | |
1db89ea5 BS |
1058 | =item Can't use anonymous symbol table for method lookup |
1059 | ||
e27ad1f2 | 1060 | (F) The internal routine that does method lookup was handed a symbol |
1db89ea5 BS |
1061 | table that doesn't have a name. Symbol tables can become anonymous |
1062 | for example by undefining stashes: C<undef %Some::Package::>. | |
1063 | ||
96ebfdd7 RK |
1064 | =item Can't use an undefined value as %s reference |
1065 | ||
1066 | (F) A value used as either a hard reference or a symbolic reference must | |
1067 | be a defined value. This helps to delurk some insidious errors. | |
1068 | ||
6df41af2 GS |
1069 | =item Can't use bareword ("%s") as %s ref while "strict refs" in use |
1070 | ||
be771a83 GS |
1071 | (F) Only hard references are allowed by "strict refs". Symbolic |
1072 | references are disallowed. See L<perlref>. | |
6df41af2 | 1073 | |
90b75b61 | 1074 | =item Can't use %! because Errno.pm is not available |
1d2dff63 GS |
1075 | |
1076 | (F) The first time the %! hash is used, perl automatically loads the | |
1077 | Errno.pm module. The Errno module is expected to tie the %! hash to | |
1078 | provide symbolic names for C<$!> errno values. | |
1079 | ||
1109a392 MHM |
1080 | =item Can't use both '<' and '>' after type '%c' in %s |
1081 | ||
1082 | (F) A type cannot be forced to have both big-endian and little-endian | |
1083 | byte-order at the same time, so this combination of modifiers is not | |
1084 | allowed. See L<perlfunc/pack>. | |
1085 | ||
6df41af2 GS |
1086 | =item Can't use %s for loop variable |
1087 | ||
be771a83 GS |
1088 | (F) Only a simple scalar variable may be used as a loop variable on a |
1089 | foreach. | |
6df41af2 GS |
1090 | |
1091 | =item Can't use global %s in "my" | |
1092 | ||
be771a83 GS |
1093 | (F) You tried to declare a magical variable as a lexical variable. This |
1094 | is not allowed, because the magic can be tied to only one location | |
1095 | (namely the global variable) and it would be incredibly confusing to | |
1096 | have variables in your program that looked like magical variables but | |
6df41af2 GS |
1097 | weren't. |
1098 | ||
6d3b25aa RGS |
1099 | =item Can't use '%c' in a group with different byte-order in %s |
1100 | ||
1101 | (F) You attempted to force a different byte-order on a type | |
1102 | that is already inside a group with a byte-order modifier. | |
1103 | For example you cannot force little-endianness on a type that | |
1104 | is inside a big-endian group. | |
1105 | ||
c07a80fd | 1106 | =item Can't use "my %s" in sort comparison |
1107 | ||
1108 | (F) The global variables $a and $b are reserved for sort comparisons. | |
c47ff5f1 | 1109 | You mentioned $a or $b in the same line as the <=> or cmp operator, |
c07a80fd | 1110 | and the variable had earlier been declared as a lexical variable. |
1111 | Either qualify the sort variable with the package name, or rename the | |
1112 | lexical variable. | |
1113 | ||
a0d0e21e LW |
1114 | =item Can't use %s ref as %s ref |
1115 | ||
1116 | (F) You've mixed up your reference types. You have to dereference a | |
1117 | reference of the type needed. You can use the ref() function to | |
1118 | test the type of the reference, if need be. | |
1119 | ||
748a9306 | 1120 | =item Can't use string ("%s") as %s ref while "strict refs" in use |
a0d0e21e | 1121 | |
be771a83 GS |
1122 | (F) Only hard references are allowed by "strict refs". Symbolic |
1123 | references are disallowed. See L<perlref>. | |
a0d0e21e | 1124 | |
748a9306 LW |
1125 | =item Can't use subscript on %s |
1126 | ||
1127 | (F) The compiler tried to interpret a bracketed expression as a | |
1128 | subscript. But to the left of the brackets was an expression that | |
1129 | didn't look like an array reference, or anything else subscriptable. | |
1130 | ||
6df41af2 GS |
1131 | =item Can't use \%c to mean $%c in expression |
1132 | ||
75b44862 GS |
1133 | (W syntax) In an ordinary expression, backslash is a unary operator that |
1134 | creates a reference to its argument. The use of backslash to indicate a | |
1135 | backreference to a matched substring is valid only as part of a regular | |
be771a83 GS |
1136 | expression pattern. Trying to do this in ordinary Perl code produces a |
1137 | value that prints out looking like SCALAR(0xdecaf). Use the $1 form | |
1138 | instead. | |
6df41af2 | 1139 | |
810b8aa5 GS |
1140 | =item Can't weaken a nonreference |
1141 | ||
1142 | (F) You attempted to weaken something that was not a reference. Only | |
1143 | references can be weakened. | |
1144 | ||
5f05dabc | 1145 | =item Can't x= to read-only value |
a0d0e21e | 1146 | |
be771a83 GS |
1147 | (F) You tried to repeat a constant value (often the undefined value) |
1148 | with an assignment operator, which implies modifying the value itself. | |
a0d0e21e LW |
1149 | Perhaps you need to copy the value to a temporary, and repeat that. |
1150 | ||
49704364 | 1151 | =item Character in "C" format wrapped in pack |
ac7cd81a SC |
1152 | |
1153 | (W pack) You said | |
1154 | ||
1155 | pack("C", $x) | |
1156 | ||
1157 | where $x is either less than 0 or more than 255; the C<"C"> format is | |
1158 | only for encoding native operating system characters (ASCII, EBCDIC, | |
1159 | and so on) and not for Unicode characters, so Perl behaved as if you meant | |
1160 | ||
1161 | pack("C", $x & 255) | |
1162 | ||
1163 | If you actually want to pack Unicode codepoints, use the C<"U"> format | |
1164 | instead. | |
1165 | ||
49704364 | 1166 | =item Character in "c" format wrapped in pack |
ac7cd81a SC |
1167 | |
1168 | (W pack) You said | |
1169 | ||
1170 | pack("c", $x) | |
1171 | ||
1172 | where $x is either less than -128 or more than 127; the C<"c"> format | |
1173 | is only for encoding native operating system characters (ASCII, EBCDIC, | |
1174 | and so on) and not for Unicode characters, so Perl behaved as if you meant | |
1175 | ||
1176 | pack("c", $x & 255); | |
1177 | ||
1178 | If you actually want to pack Unicode codepoints, use the C<"U"> format | |
1179 | instead. | |
1180 | ||
96ebfdd7 RK |
1181 | =item close() on unopened filehandle %s |
1182 | ||
1183 | (W unopened) You tried to close a filehandle that was never opened. | |
1184 | ||
49704364 WL |
1185 | =item Code missing after '/' |
1186 | ||
1187 | (F) You had a (sub-)template that ends with a '/'. There must be another | |
1188 | template code following the slash. See L<perlfunc/pack>. | |
1189 | ||
6df41af2 GS |
1190 | =item %s: Command not found |
1191 | ||
be771a83 GS |
1192 | (A) You've accidentally run your script through B<csh> instead of Perl. |
1193 | Check the #! line, or manually feed your script into Perl yourself. | |
6df41af2 | 1194 | |
7a2e2cd6 | 1195 | =item Compilation failed in require |
1196 | ||
1197 | (F) Perl could not compile a file specified in a C<require> statement. | |
be771a83 GS |
1198 | Perl uses this generic message when none of the errors that it |
1199 | encountered were severe enough to halt compilation immediately. | |
7a2e2cd6 | 1200 | |
c3464db5 DD |
1201 | =item Complex regular subexpression recursion limit (%d) exceeded |
1202 | ||
be771a83 GS |
1203 | (W regexp) The regular expression engine uses recursion in complex |
1204 | situations where back-tracking is required. Recursion depth is limited | |
1205 | to 32766, or perhaps less in architectures where the stack cannot grow | |
1206 | arbitrarily. ("Simple" and "medium" situations are handled without | |
1207 | recursion and are not subject to a limit.) Try shortening the string | |
1208 | under examination; looping in Perl code (e.g. with C<while>) rather than | |
1209 | in the regular expression engine; or rewriting the regular expression so | |
c2e66d9e | 1210 | that it is simpler or backtracks less. (See L<perlfaq2> for information |
be771a83 | 1211 | on I<Mastering Regular Expressions>.) |
c3464db5 | 1212 | |
38875929 DM |
1213 | =item cond_broadcast() called on unlocked variable |
1214 | ||
1215 | (W threads) Within a thread-enabled program, you tried to call | |
1216 | cond_broadcast() on a variable which wasn't locked. The cond_broadcast() | |
1217 | function is used to wake up another thread that is waiting in a | |
1218 | cond_wait(). To ensure that the signal isn't sent before the other thread | |
1219 | has a chance to enter the wait, it is usual for the signaling thread to | |
1220 | first wait for a lock on variable. This lock attempt will only succeed | |
1221 | after the other thread has entered cond_wait() and thus relinquished the | |
1222 | lock. | |
1223 | ||
38875929 DM |
1224 | =item cond_signal() called on unlocked variable |
1225 | ||
1226 | (W threads) Within a thread-enabled program, you tried to call | |
1227 | cond_signal() on a variable which wasn't locked. The cond_signal() | |
1228 | function is used to wake up another thread that is waiting in a | |
1229 | cond_wait(). To ensure that the signal isn't sent before the other thread | |
1230 | has a chance to enter the wait, it is usual for the signaling thread to | |
1231 | first wait for a lock on variable. This lock attempt will only succeed | |
1232 | after the other thread has entered cond_wait() and thus relinquished the | |
1233 | lock. | |
1234 | ||
69282e91 | 1235 | =item connect() on closed socket %s |
a0d0e21e | 1236 | |
be771a83 GS |
1237 | (W closed) You tried to do a connect on a closed socket. Did you forget |
1238 | to check the return value of your socket() call? See | |
1239 | L<perlfunc/connect>. | |
a0d0e21e | 1240 | |
41ab332f | 1241 | =item Constant(%s)%s: %s |
6df41af2 | 1242 | |
be771a83 GS |
1243 | (F) The parser found inconsistencies either while attempting to define |
1244 | an overloaded constant, or when trying to find the character name | |
1245 | specified in the C<\N{...}> escape. Perhaps you forgot to load the | |
1246 | corresponding C<overload> or C<charnames> pragma? See L<charnames> and | |
1247 | L<overload>. | |
6df41af2 | 1248 | |
779c5bc9 GS |
1249 | =item Constant is not %s reference |
1250 | ||
1251 | (F) A constant value (perhaps declared using the C<use constant> pragma) | |
be771a83 GS |
1252 | is being dereferenced, but it amounts to the wrong type of reference. |
1253 | The message indicates the type of reference that was expected. This | |
1254 | usually indicates a syntax error in dereferencing the constant value. | |
779c5bc9 GS |
1255 | See L<perlsub/"Constant Functions"> and L<constant>. |
1256 | ||
4cee8e80 CS |
1257 | =item Constant subroutine %s redefined |
1258 | ||
bb028877 | 1259 | (S) You redefined a subroutine which had previously been |
be771a83 GS |
1260 | eligible for inlining. See L<perlsub/"Constant Functions"> for |
1261 | commentary and workarounds. | |
4cee8e80 | 1262 | |
9607fc9c | 1263 | =item Constant subroutine %s undefined |
1264 | ||
be771a83 GS |
1265 | (W misc) You undefined a subroutine which had previously been eligible |
1266 | for inlining. See L<perlsub/"Constant Functions"> for commentary and | |
1267 | workarounds. | |
9607fc9c | 1268 | |
e7ea3e70 IZ |
1269 | =item Copy method did not return a reference |
1270 | ||
64977eb6 | 1271 | (F) The method which overloads "=" is buggy. See |
13a2d996 | 1272 | L<overload/Copy Constructor>. |
e7ea3e70 | 1273 | |
6798c92b GS |
1274 | =item CORE::%s is not a keyword |
1275 | ||
1276 | (F) The CORE:: namespace is reserved for Perl keywords. | |
1277 | ||
a0d0e21e LW |
1278 | =item corrupted regexp pointers |
1279 | ||
1280 | (P) The regular expression engine got confused by what the regular | |
1281 | expression compiler gave it. | |
1282 | ||
1283 | =item corrupted regexp program | |
1284 | ||
be771a83 GS |
1285 | (P) The regular expression engine got passed a regexp program without a |
1286 | valid magic number. | |
a0d0e21e | 1287 | |
6df41af2 GS |
1288 | =item Corrupt malloc ptr 0x%lx at 0x%lx |
1289 | ||
1290 | (P) The malloc package that comes with Perl had an internal failure. | |
1291 | ||
49704364 WL |
1292 | =item Count after length/code in unpack |
1293 | ||
1294 | (F) You had an unpack template indicating a counted-length string, but | |
1295 | you have also specified an explicit size for the string. See | |
1296 | L<perlfunc/pack>. | |
1297 | ||
a0d0e21e LW |
1298 | =item Deep recursion on subroutine "%s" |
1299 | ||
be771a83 GS |
1300 | (W recursion) This subroutine has called itself (directly or indirectly) |
1301 | 100 times more than it has returned. This probably indicates an | |
1302 | infinite recursion, unless you're writing strange benchmark programs, in | |
1303 | which case it indicates something else. | |
a0d0e21e | 1304 | |
f10b0346 | 1305 | =item defined(@array) is deprecated |
69794302 | 1306 | |
be771a83 GS |
1307 | (D deprecated) defined() is not usually useful on arrays because it |
1308 | checks for an undefined I<scalar> value. If you want to see if the | |
64977eb6 | 1309 | array is empty, just use C<if (@array) { # not empty }> for example. |
69794302 | 1310 | |
f10b0346 | 1311 | =item defined(%hash) is deprecated |
69794302 | 1312 | |
be771a83 GS |
1313 | (D deprecated) defined() is not usually useful on hashes because it |
1314 | checks for an undefined I<scalar> value. If you want to see if the hash | |
64977eb6 | 1315 | is empty, just use C<if (%hash) { # not empty }> for example. |
69794302 | 1316 | |
62658f4d PM |
1317 | =item %s defines neither package nor VERSION--version check failed |
1318 | ||
1319 | (F) You said something like "use Module 42" but in the Module file | |
1320 | there are neither package declarations nor a C<$VERSION>. | |
1321 | ||
fc36a67e | 1322 | =item Delimiter for here document is too long |
1323 | ||
be771a83 GS |
1324 | (F) In a here document construct like C<<<FOO>, the label C<FOO> is too |
1325 | long for Perl to handle. You have to be seriously twisted to write code | |
1326 | that triggers this error. | |
fc36a67e | 1327 | |
6d3b25aa RGS |
1328 | =item Deprecated use of my() in false conditional |
1329 | ||
1330 | (D deprecated) You used a declaration similar to C<my $x if 0>. | |
1331 | There has been a long-standing bug in Perl that causes a lexical variable | |
1332 | not to be cleared at scope exit when its declaration includes a false | |
1333 | conditional. Some people have exploited this bug to achieve a kind of | |
1334 | static variable. Since we intend to fix this bug, we don't want people | |
1335 | relying on this behavior. You can achieve a similar static effect by | |
1336 | declaring the variable in a separate block outside the function, eg | |
1337 | ||
1338 | sub f { my $x if 0; return $x++ } | |
1339 | ||
1340 | becomes | |
1341 | ||
1342 | { my $x; sub f { return $x++ } } | |
1343 | ||
500ab966 RGS |
1344 | =item DESTROY created new reference to dead object '%s' |
1345 | ||
1346 | (F) A DESTROY() method created a new reference to the object which is | |
1347 | just being DESTROYed. Perl is confused, and prefers to abort rather than | |
1348 | to create a dangling reference. | |
1349 | ||
3cdd684c TP |
1350 | =item Did not produce a valid header |
1351 | ||
1352 | See Server error. | |
1353 | ||
6df41af2 GS |
1354 | =item %s did not return a true value |
1355 | ||
1356 | (F) A required (or used) file must return a true value to indicate that | |
1357 | it compiled correctly and ran its initialization code correctly. It's | |
1358 | traditional to end such a file with a "1;", though any true value would | |
1359 | do. See L<perlfunc/require>. | |
1360 | ||
cc507455 | 1361 | =item (Did you mean &%s instead?) |
4633a7c4 | 1362 | |
be771a83 GS |
1363 | (W) You probably referred to an imported subroutine &FOO as $FOO or some |
1364 | such. | |
4633a7c4 | 1365 | |
cc507455 | 1366 | =item (Did you mean "local" instead of "our"?) |
33633739 | 1367 | |
be771a83 GS |
1368 | (W misc) Remember that "our" does not localize the declared global |
1369 | variable. You have declared it again in the same lexical scope, which | |
1370 | seems superfluous. | |
33633739 | 1371 | |
cc507455 | 1372 | =item (Did you mean $ or @ instead of %?) |
a0d0e21e | 1373 | |
be771a83 GS |
1374 | (W) You probably said %hash{$key} when you meant $hash{$key} or |
1375 | @hash{@keys}. On the other hand, maybe you just meant %hash and got | |
1376 | carried away. | |
748a9306 | 1377 | |
7e1af8bc | 1378 | =item Died |
5f05dabc | 1379 | |
1380 | (F) You passed die() an empty string (the equivalent of C<die "">) or | |
1381 | you called it with no args and both C<$@> and C<$_> were empty. | |
1382 | ||
3cdd684c TP |
1383 | =item Document contains no data |
1384 | ||
1385 | See Server error. | |
1386 | ||
62658f4d PM |
1387 | =item %s does not define %s::VERSION--version check failed |
1388 | ||
1389 | (F) You said something like "use Module 42" but the Module did not | |
1390 | define a C<$VERSION.> | |
1391 | ||
49704364 WL |
1392 | =item '/' does not take a repeat count |
1393 | ||
1394 | (F) You cannot put a repeat count of any kind right after the '/' code. | |
1395 | See L<perlfunc/pack>. | |
1396 | ||
a0d0e21e LW |
1397 | =item Don't know how to handle magic of type '%s' |
1398 | ||
1399 | (P) The internal handling of magical variables has been cursed. | |
1400 | ||
1401 | =item do_study: out of memory | |
1402 | ||
1403 | (P) This should have been caught by safemalloc() instead. | |
1404 | ||
6df41af2 GS |
1405 | =item (Do you need to predeclare %s?) |
1406 | ||
56da5a46 RGS |
1407 | (S syntax) This is an educated guess made in conjunction with the message |
1408 | "%s found where operator expected". It often means a subroutine or module | |
6df41af2 GS |
1409 | name is being referenced that hasn't been declared yet. This may be |
1410 | because of ordering problems in your file, or because of a missing | |
be771a83 GS |
1411 | "sub", "package", "require", or "use" statement. If you're referencing |
1412 | something that isn't defined yet, you don't actually have to define the | |
1413 | subroutine or package before the current location. You can use an empty | |
1414 | "sub foo;" or "package FOO;" to enter a "forward" declaration. | |
6df41af2 | 1415 | |
ac206dc8 RGS |
1416 | =item dump() better written as CORE::dump() |
1417 | ||
1418 | (W misc) You used the obsolescent C<dump()> built-in function, without fully | |
1419 | qualifying it as C<CORE::dump()>. Maybe it's a typo. See L<perlfunc/dump>. | |
1420 | ||
a0d0e21e LW |
1421 | =item Duplicate free() ignored |
1422 | ||
be771a83 GS |
1423 | (S malloc) An internal routine called free() on something that had |
1424 | already been freed. | |
a0d0e21e | 1425 | |
1109a392 MHM |
1426 | =item Duplicate modifier '%c' after '%c' in %s |
1427 | ||
1428 | (W) You have applied the same modifier more than once after a type | |
1429 | in a pack template. See L<perlfunc/pack>. | |
1430 | ||
4633a7c4 LW |
1431 | =item elseif should be elsif |
1432 | ||
56da5a46 RGS |
1433 | (S syntax) There is no keyword "elseif" in Perl because Larry thinks it's |
1434 | ugly. Your code will be interpreted as an attempt to call a method named | |
be771a83 | 1435 | "elseif" for the class returned by the following block. This is |
4633a7c4 LW |
1436 | unlikely to be what you want. |
1437 | ||
ab13f0c7 JH |
1438 | =item Empty %s |
1439 | ||
af6f566e HS |
1440 | (F) C<\p> and C<\P> are used to introduce a named Unicode property, as |
1441 | described in L<perlunicode> and L<perlre>. You used C<\p> or C<\P> in | |
1442 | a regular expression without specifying the property name. | |
ab13f0c7 | 1443 | |
85ab1d1d | 1444 | =item entering effective %s failed |
5ff3f7a4 | 1445 | |
85ab1d1d | 1446 | (F) While under the C<use filetest> pragma, switching the real and |
5ff3f7a4 GS |
1447 | effective uids or gids failed. |
1448 | ||
c038024b RGS |
1449 | =item %ENV is aliased to %s |
1450 | ||
1451 | (F) You're running under taint mode, and the C<%ENV> variable has been | |
1452 | aliased to another hash, so it doesn't reflect anymore the state of the | |
1453 | program's environment. This is potentially insecure. | |
1454 | ||
748a9306 LW |
1455 | =item Error converting file specification %s |
1456 | ||
5f05dabc | 1457 | (F) An error peculiar to VMS. Because Perl may have to deal with file |
748a9306 | 1458 | specifications in either VMS or Unix syntax, it converts them to a |
be771a83 GS |
1459 | single form when it must operate on them directly. Either you've passed |
1460 | an invalid file specification to Perl, or you've found a case the | |
1461 | conversion routines don't handle. Drat. | |
748a9306 | 1462 | |
e4d48cc9 GS |
1463 | =item %s: Eval-group in insecure regular expression |
1464 | ||
be771a83 GS |
1465 | (F) Perl detected tainted data when trying to compile a regular |
1466 | expression that contains the C<(?{ ... })> zero-width assertion, which | |
1467 | is unsafe. See L<perlre/(?{ code })>, and L<perlsec>. | |
e4d48cc9 | 1468 | |
e4d48cc9 GS |
1469 | =item %s: Eval-group not allowed at run time |
1470 | ||
be771a83 GS |
1471 | (F) Perl tried to compile a regular expression containing the |
1472 | C<(?{ ... })> zero-width assertion at run time, as it would when the | |
1473 | pattern contains interpolated values. Since that is a security risk, it | |
1474 | is not allowed. If you insist, you may still do this by explicitly | |
1475 | building the pattern from an interpolated string at run time and using | |
1476 | that in an eval(). See L<perlre/(?{ code })>. | |
e4d48cc9 | 1477 | |
6df41af2 GS |
1478 | =item %s: Eval-group not allowed, use re 'eval' |
1479 | ||
be771a83 GS |
1480 | (F) A regular expression contained the C<(?{ ... })> zero-width |
1481 | assertion, but that construct is only allowed when the C<use re 'eval'> | |
1482 | pragma is in effect. See L<perlre/(?{ code })>. | |
6df41af2 | 1483 | |
fc36a67e | 1484 | =item Excessively long <> operator |
1485 | ||
1486 | (F) The contents of a <> operator may not exceed the maximum size of a | |
1487 | Perl identifier. If you're just trying to glob a long list of | |
1488 | filenames, try using the glob() operator, or put the filenames into a | |
1489 | variable and glob that. | |
1490 | ||
ed9aa3b7 SG |
1491 | =item exec? I'm not *that* kind of operating system |
1492 | ||
1493 | (F) The C<exec> function is not implemented in MacPerl. See L<perlport>. | |
1494 | ||
f86702cc | 1495 | =item Execution of %s aborted due to compilation errors |
a0d0e21e LW |
1496 | |
1497 | (F) The final summary message when a Perl compilation fails. | |
1498 | ||
1499 | =item Exiting eval via %s | |
1500 | ||
be771a83 GS |
1501 | (W exiting) You are exiting an eval by unconventional means, such as a |
1502 | goto, or a loop control statement. | |
e476b1b5 GS |
1503 | |
1504 | =item Exiting format via %s | |
1505 | ||
9a2ff54b | 1506 | (W exiting) You are exiting a format by unconventional means, such as a |
be771a83 | 1507 | goto, or a loop control statement. |
a0d0e21e | 1508 | |
0a753a76 | 1509 | =item Exiting pseudo-block via %s |
1510 | ||
be771a83 GS |
1511 | (W exiting) You are exiting a rather special block construct (like a |
1512 | sort block or subroutine) by unconventional means, such as a goto, or a | |
1513 | loop control statement. See L<perlfunc/sort>. | |
0a753a76 | 1514 | |
a0d0e21e LW |
1515 | =item Exiting subroutine via %s |
1516 | ||
be771a83 GS |
1517 | (W exiting) You are exiting a subroutine by unconventional means, such |
1518 | as a goto, or a loop control statement. | |
a0d0e21e LW |
1519 | |
1520 | =item Exiting substitution via %s | |
1521 | ||
be771a83 GS |
1522 | (W exiting) You are exiting a substitution by unconventional means, such |
1523 | as a return, a goto, or a loop control statement. | |
a0d0e21e | 1524 | |
7b8d334a GS |
1525 | =item Explicit blessing to '' (assuming package main) |
1526 | ||
be771a83 GS |
1527 | (W misc) You are blessing a reference to a zero length string. This has |
1528 | the effect of blessing the reference into the package main. This is | |
1529 | usually not what you want. Consider providing a default target package, | |
1530 | e.g. bless($ref, $p || 'MyPackage'); | |
7b8d334a | 1531 | |
6df41af2 GS |
1532 | =item %s: Expression syntax |
1533 | ||
be771a83 GS |
1534 | (A) You've accidentally run your script through B<csh> instead of Perl. |
1535 | Check the #! line, or manually feed your script into Perl yourself. | |
6df41af2 GS |
1536 | |
1537 | =item %s failed--call queue aborted | |
1538 | ||
1539 | (F) An untrapped exception was raised while executing a CHECK, INIT, or | |
1540 | END subroutine. Processing of the remainder of the queue of such | |
1541 | routines has been prematurely ended. | |
1542 | ||
7253e4e3 | 1543 | =item False [] range "%s" in regex; marked by <-- HERE in m/%s/ |
73b437c8 | 1544 | |
be771a83 | 1545 | (W regexp) A character class range must start and end at a literal |
7253e4e3 RK |
1546 | character, not another character class like C<\d> or C<[:alpha:]>. The "-" |
1547 | in your false range is interpreted as a literal "-". Consider quoting the | |
1548 | "-", "\-". The <-- HERE shows in the regular expression about where the | |
1549 | problem was discovered. See L<perlre>. | |
73b437c8 | 1550 | |
748a9306 | 1551 | =item Fatal VMS error at %s, line %d |
a0d0e21e | 1552 | |
be771a83 GS |
1553 | (P) An error peculiar to VMS. Something untoward happened in a VMS |
1554 | system service or RTL routine; Perl's exit status should provide more | |
1555 | details. The filename in "at %s" and the line number in "line %d" tell | |
1556 | you which section of the Perl source code is distressed. | |
a0d0e21e LW |
1557 | |
1558 | =item fcntl is not implemented | |
1559 | ||
1560 | (F) Your machine apparently doesn't implement fcntl(). What is this, a | |
1561 | PDP-11 or something? | |
1562 | ||
af8c498a | 1563 | =item Filehandle %s opened only for input |
a0d0e21e | 1564 | |
6c8d78fb HS |
1565 | (W io) You tried to write on a read-only filehandle. If you intended |
1566 | it to be a read-write filehandle, you needed to open it with "+<" or | |
1567 | "+>" or "+>>" instead of with "<" or nothing. If you intended only to | |
1568 | write the file, use ">" or ">>". See L<perlfunc/open>. | |
a0d0e21e | 1569 | |
af8c498a | 1570 | =item Filehandle %s opened only for output |
a0d0e21e | 1571 | |
6c8d78fb HS |
1572 | (W io) You tried to read from a filehandle opened only for writing, If |
1573 | you intended it to be a read/write filehandle, you needed to open it | |
be771a83 GS |
1574 | with "+<" or "+>" or "+>>" instead of with "<" or nothing. If you |
1575 | intended only to read from the file, use "<". See L<perlfunc/open>. | |
6c8d78fb HS |
1576 | Another possibility is that you attempted to open filedescriptor 0 |
1577 | (also known as STDIN) for output (maybe you closed STDIN earlier?). | |
97828cef RGS |
1578 | |
1579 | =item Filehandle %s reopened as %s only for input | |
1580 | ||
1581 | (W io) You opened for reading a filehandle that got the same filehandle id | |
1582 | as STDOUT or STDERR. This occured because you closed STDOUT or STDERR | |
1583 | previously. | |
1584 | ||
1585 | =item Filehandle STDIN reopened as %s only for output | |
1586 | ||
1587 | (W io) You opened for writing a filehandle that got the same filehandle id | |
1588 | as STDIN. This occured because you closed STDIN previously. | |
a0d0e21e LW |
1589 | |
1590 | =item Final $ should be \$ or $name | |
1591 | ||
1592 | (F) You must now decide whether the final $ in a string was meant to be | |
be771a83 GS |
1593 | a literal dollar sign, or was meant to introduce a variable name that |
1594 | happens to be missing. So you have to put either the backslash or the | |
1595 | name. | |
a0d0e21e | 1596 | |
56e90b21 GS |
1597 | =item flock() on closed filehandle %s |
1598 | ||
be771a83 | 1599 | (W closed) The filehandle you're attempting to flock() got itself closed |
c289d2f7 | 1600 | some time before now. Check your control flow. flock() operates on |
be771a83 GS |
1601 | filehandles. Are you attempting to call flock() on a dirhandle by the |
1602 | same name? | |
56e90b21 | 1603 | |
6df41af2 GS |
1604 | =item Format not terminated |
1605 | ||
1606 | (F) A format must be terminated by a line with a solitary dot. Perl got | |
1607 | to the end of your file without finding such a line. | |
1608 | ||
a0d0e21e LW |
1609 | =item Format %s redefined |
1610 | ||
e476b1b5 | 1611 | (W redefine) You redefined a format. To suppress this warning, say |
a0d0e21e LW |
1612 | |
1613 | { | |
271595cc | 1614 | no warnings 'redefine'; |
a0d0e21e LW |
1615 | eval "format NAME =..."; |
1616 | } | |
1617 | ||
a0d0e21e LW |
1618 | =item Found = in conditional, should be == |
1619 | ||
e476b1b5 | 1620 | (W syntax) You said |
a0d0e21e LW |
1621 | |
1622 | if ($foo = 123) | |
1623 | ||
1624 | when you meant | |
1625 | ||
1626 | if ($foo == 123) | |
1627 | ||
1628 | (or something like that). | |
1629 | ||
6df41af2 GS |
1630 | =item %s found where operator expected |
1631 | ||
56da5a46 RGS |
1632 | (S syntax) The Perl lexer knows whether to expect a term or an operator. |
1633 | If it sees what it knows to be a term when it was expecting to see an | |
be771a83 GS |
1634 | operator, it gives you this warning. Usually it indicates that an |
1635 | operator or delimiter was omitted, such as a semicolon. | |
6df41af2 | 1636 | |
a0d0e21e LW |
1637 | =item gdbm store returned %d, errno %d, key "%s" |
1638 | ||
1639 | (S) A warning from the GDBM_File extension that a store failed. | |
1640 | ||
1641 | =item gethostent not implemented | |
1642 | ||
1643 | (F) Your C library apparently doesn't implement gethostent(), probably | |
1644 | because if it did, it'd feel morally obligated to return every hostname | |
1645 | on the Internet. | |
1646 | ||
69282e91 | 1647 | =item get%sname() on closed socket %s |
a0d0e21e | 1648 | |
be771a83 GS |
1649 | (W closed) You tried to get a socket or peer socket name on a closed |
1650 | socket. Did you forget to check the return value of your socket() call? | |
a0d0e21e | 1651 | |
748a9306 LW |
1652 | =item getpwnam returned invalid UIC %#o for user "%s" |
1653 | ||
1654 | (S) A warning peculiar to VMS. The call to C<sys$getuai> underlying the | |
1655 | C<getpwnam> operator returned an invalid UIC. | |
1656 | ||
6df41af2 GS |
1657 | =item getsockopt() on closed socket %s |
1658 | ||
be771a83 GS |
1659 | (W closed) You tried to get a socket option on a closed socket. Did you |
1660 | forget to check the return value of your socket() call? See | |
6df41af2 GS |
1661 | L<perlfunc/getsockopt>. |
1662 | ||
1663 | =item Global symbol "%s" requires explicit package name | |
1664 | ||
1665 | (F) You've said "use strict vars", which indicates that all variables | |
1666 | must either be lexically scoped (using "my"), declared beforehand using | |
1667 | "our", or explicitly qualified to say which package the global variable | |
1668 | is in (using "::"). | |
1669 | ||
e476b1b5 GS |
1670 | =item glob failed (%s) |
1671 | ||
be771a83 GS |
1672 | (W glob) Something went wrong with the external program(s) used for |
1673 | C<glob> and C<< <*.c> >>. Usually, this means that you supplied a | |
1674 | C<glob> pattern that caused the external program to fail and exit with a | |
1675 | nonzero status. If the message indicates that the abnormal exit | |
1676 | resulted in a coredump, this may also mean that your csh (C shell) is | |
1677 | broken. If so, you should change all of the csh-related variables in | |
1678 | config.sh: If you have tcsh, make the variables refer to it as if it | |
1679 | were csh (e.g. C<full_csh='/usr/bin/tcsh'>); otherwise, make them all | |
1680 | empty (except that C<d_csh> should be C<'undef'>) so that Perl will | |
1681 | think csh is missing. In either case, after editing config.sh, run | |
75b44862 | 1682 | C<./Configure -S> and rebuild Perl. |
e476b1b5 | 1683 | |
a0d0e21e LW |
1684 | =item Glob not terminated |
1685 | ||
1686 | (F) The lexer saw a left angle bracket in a place where it was expecting | |
be771a83 GS |
1687 | a term, so it's looking for the corresponding right angle bracket, and |
1688 | not finding it. Chances are you left some needed parentheses out | |
1689 | earlier in the line, and you really meant a "less than". | |
a0d0e21e | 1690 | |
6df41af2 | 1691 | =item Got an error from DosAllocMem |
a0d0e21e | 1692 | |
6df41af2 GS |
1693 | (P) An error peculiar to OS/2. Most probably you're using an obsolete |
1694 | version of Perl, and this should not happen anyway. | |
a0d0e21e LW |
1695 | |
1696 | =item goto must have label | |
1697 | ||
1698 | (F) Unlike with "next" or "last", you're not allowed to goto an | |
1699 | unspecified destination. See L<perlfunc/goto>. | |
1700 | ||
49704364 | 1701 | =item ()-group starts with a count |
18529408 | 1702 | |
49704364 | 1703 | (F) A ()-group started with a count. A count is |
18529408 | 1704 | supposed to follow something: a template character or a ()-group. |
49704364 | 1705 | See L<perlfunc/pack>. |
18529408 | 1706 | |
6df41af2 GS |
1707 | =item %s had compilation errors |
1708 | ||
1709 | (F) The final summary message when a C<perl -c> fails. | |
1710 | ||
a0d0e21e LW |
1711 | =item Had to create %s unexpectedly |
1712 | ||
be771a83 GS |
1713 | (S internal) A routine asked for a symbol from a symbol table that ought |
1714 | to have existed already, but for some reason it didn't, and had to be | |
1715 | created on an emergency basis to prevent a core dump. | |
a0d0e21e LW |
1716 | |
1717 | =item Hash %%s missing the % in argument %d of %s() | |
1718 | ||
be771a83 GS |
1719 | (D deprecated) Really old Perl let you omit the % on hash names in some |
1720 | spots. This is now heavily deprecated. | |
a0d0e21e | 1721 | |
6df41af2 GS |
1722 | =item %s has too many errors |
1723 | ||
1724 | (F) The parser has given up trying to parse the program after 10 errors. | |
1725 | Further error messages would likely be uninformative. | |
1726 | ||
252aa082 JH |
1727 | =item Hexadecimal number > 0xffffffff non-portable |
1728 | ||
e476b1b5 | 1729 | (W portable) The hexadecimal number you specified is larger than 2**32-1 |
9e24b6e2 JH |
1730 | (4294967295) and therefore non-portable between systems. See |
1731 | L<perlport> for more on portability concerns. | |
252aa082 | 1732 | |
8903cb82 | 1733 | =item Identifier too long |
1734 | ||
1735 | (F) Perl limits identifiers (names for variables, functions, etc.) to | |
fc36a67e | 1736 | about 250 characters for simple names, and somewhat more for compound |
be771a83 GS |
1737 | names (like C<$A::B>). You've exceeded Perl's limits. Future versions |
1738 | of Perl are likely to eliminate these arbitrary limitations. | |
8903cb82 | 1739 | |
6df41af2 | 1740 | =item Illegal binary digit %s |
f675dbe5 | 1741 | |
6df41af2 | 1742 | (F) You used a digit other than 0 or 1 in a binary number. |
f675dbe5 | 1743 | |
6df41af2 | 1744 | =item Illegal binary digit %s ignored |
a0d0e21e | 1745 | |
be771a83 GS |
1746 | (W digit) You may have tried to use a digit other than 0 or 1 in a |
1747 | binary number. Interpretation of the binary number stopped before the | |
1748 | offending digit. | |
a0d0e21e | 1749 | |
4fdae800 | 1750 | =item Illegal character %s (carriage return) |
1751 | ||
d5898338 | 1752 | (F) Perl normally treats carriage returns in the program text as it |
be771a83 GS |
1753 | would any other whitespace, which means you should never see this error |
1754 | when Perl was built using standard options. For some reason, your | |
1755 | version of Perl appears to have been built without this support. Talk | |
1756 | to your Perl administrator. | |
4fdae800 | 1757 | |
d37a9538 ST |
1758 | =item Illegal character in prototype for %s : %s |
1759 | ||
420cdfc1 | 1760 | (W syntax) An illegal character was found in a prototype declaration. Legal |
d37a9538 ST |
1761 | characters in prototypes are $, @, %, *, ;, [, ], &, and \. |
1762 | ||
904d85c5 RGS |
1763 | =item Illegal declaration of anonymous subroutine |
1764 | ||
1765 | (F) When using the C<sub> keyword to construct an anonymous subroutine, | |
1766 | you must always specify a block of code. See L<perlsub>. | |
1767 | ||
8e742a20 MHM |
1768 | =item Illegal declaration of subroutine %s |
1769 | ||
1770 | (F) A subroutine was not declared correctly. See L<perlsub>. | |
1771 | ||
a0d0e21e LW |
1772 | =item Illegal division by zero |
1773 | ||
be771a83 GS |
1774 | (F) You tried to divide a number by 0. Either something was wrong in |
1775 | your logic, or you need to put a conditional in to guard against | |
1776 | meaningless input. | |
a0d0e21e | 1777 | |
6df41af2 GS |
1778 | =item Illegal hexadecimal digit %s ignored |
1779 | ||
be771a83 GS |
1780 | (W digit) You may have tried to use a character other than 0 - 9 or |
1781 | A - F, a - f in a hexadecimal number. Interpretation of the hexadecimal | |
1782 | number stopped before the illegal character. | |
6df41af2 | 1783 | |
a0d0e21e LW |
1784 | =item Illegal modulus zero |
1785 | ||
be771a83 GS |
1786 | (F) You tried to divide a number by 0 to get the remainder. Most |
1787 | numbers don't take to this kindly. | |
a0d0e21e | 1788 | |
6df41af2 | 1789 | =item Illegal number of bits in vec |
399388f4 | 1790 | |
6df41af2 GS |
1791 | (F) The number of bits in vec() (the third argument) must be a power of |
1792 | two from 1 to 32 (or 64, if your platform supports that). | |
399388f4 GS |
1793 | |
1794 | =item Illegal octal digit %s | |
a0d0e21e | 1795 | |
d1be9408 | 1796 | (F) You used an 8 or 9 in an octal number. |
a0d0e21e | 1797 | |
399388f4 | 1798 | =item Illegal octal digit %s ignored |
748a9306 | 1799 | |
d1be9408 | 1800 | (W digit) You may have tried to use an 8 or 9 in an octal number. |
75b44862 | 1801 | Interpretation of the octal number stopped before the 8 or 9. |
748a9306 | 1802 | |
6df41af2 | 1803 | =item Illegal switch in PERL5OPT: %s |
6ff81951 | 1804 | |
6df41af2 | 1805 | (X) The PERL5OPT environment variable may only be used to set the |
1c4db469 | 1806 | following switches: B<-[DIMUdmtw]>. |
6ff81951 | 1807 | |
6df41af2 | 1808 | =item Ill-formed CRTL environ value "%s" |
81e118e0 | 1809 | |
75b44862 | 1810 | (W internal) A warning peculiar to VMS. Perl tried to read the CRTL's |
be771a83 GS |
1811 | internal environ array, and encountered an element without the C<=> |
1812 | delimiter used to separate keys from values. The element is ignored. | |
09bef843 | 1813 | |
6df41af2 | 1814 | =item Ill-formed message in prime_env_iter: |%s| |
54310121 | 1815 | |
be771a83 GS |
1816 | (W internal) A warning peculiar to VMS. Perl tried to read a logical |
1817 | name or CLI symbol definition when preparing to iterate over %ENV, and | |
1818 | didn't see the expected delimiter between key and value, so the line was | |
1819 | ignored. | |
54310121 | 1820 | |
8fa7688f SF |
1821 | =item Impossible to activate assertion call |
1822 | ||
1823 | (W assertions) You're calling an assertion function in a block that is | |
1824 | not under the control of the C<assertions> pragma. | |
1825 | ||
6df41af2 | 1826 | =item (in cleanup) %s |
9607fc9c | 1827 | |
be771a83 GS |
1828 | (W misc) This prefix usually indicates that a DESTROY() method raised |
1829 | the indicated exception. Since destructors are usually called by the | |
1830 | system at arbitrary points during execution, and often a vast number of | |
1831 | times, the warning is issued only once for any number of failures that | |
1832 | would otherwise result in the same message being repeated. | |
6df41af2 | 1833 | |
be771a83 GS |
1834 | Failure of user callbacks dispatched using the C<G_KEEPERR> flag could |
1835 | also result in this warning. See L<perlcall/G_KEEPERR>. | |
9607fc9c | 1836 | |
979699d9 JH |
1837 | =item In EBCDIC the v-string components cannot exceed 2147483647 |
1838 | ||
1839 | (F) An error peculiar to EBCDIC. Internally, v-strings are stored as | |
1840 | Unicode code points, and encoded in EBCDIC as UTF-EBCDIC. The UTF-EBCDIC | |
1841 | encoding is limited to code points no larger than 2147483647 (0x7FFFFFFF). | |
1842 | ||
a0d0e21e LW |
1843 | =item Insecure dependency in %s |
1844 | ||
8b1a09fc | 1845 | (F) You tried to do something that the tainting mechanism didn't like. |
be771a83 GS |
1846 | The tainting mechanism is turned on when you're running setuid or |
1847 | setgid, or when you specify B<-T> to turn it on explicitly. The | |
1848 | tainting mechanism labels all data that's derived directly or indirectly | |
1849 | from the user, who is considered to be unworthy of your trust. If any | |
1850 | such data is used in a "dangerous" operation, you get this error. See | |
1851 | L<perlsec> for more information. | |
a0d0e21e LW |
1852 | |
1853 | =item Insecure directory in %s | |
1854 | ||
be771a83 GS |
1855 | (F) You can't use system(), exec(), or a piped open in a setuid or |
1856 | setgid script if C<$ENV{PATH}> contains a directory that is writable by | |
df98f984 RGS |
1857 | the world. Also, the PATH must not contain any relative directory. |
1858 | See L<perlsec>. | |
a0d0e21e | 1859 | |
62f468fc | 1860 | =item Insecure $ENV{%s} while running %s |
a0d0e21e LW |
1861 | |
1862 | (F) You can't use system(), exec(), or a piped open in a setuid or | |
62f468fc | 1863 | setgid script if any of C<$ENV{PATH}>, C<$ENV{IFS}>, C<$ENV{CDPATH}>, |
332d5f78 SR |
1864 | C<$ENV{ENV}>, C<$ENV{BASH_ENV}> or C<$ENV{TERM}> are derived from data |
1865 | supplied (or potentially supplied) by the user. The script must set | |
1866 | the path to a known value, using trustworthy data. See L<perlsec>. | |
a0d0e21e | 1867 | |
a7ae9550 GS |
1868 | =item Integer overflow in %s number |
1869 | ||
75b44862 | 1870 | (W overflow) The hexadecimal, octal or binary number you have specified |
be771a83 GS |
1871 | either as a literal or as an argument to hex() or oct() is too big for |
1872 | your architecture, and has been converted to a floating point number. | |
1873 | On a 32-bit architecture the largest hexadecimal, octal or binary number | |
9e24b6e2 JH |
1874 | representable without overflow is 0xFFFFFFFF, 037777777777, or |
1875 | 0b11111111111111111111111111111111 respectively. Note that Perl | |
1876 | transparently promotes all numbers to a floating point representation | |
1877 | internally--subject to loss of precision errors in subsequent | |
1878 | operations. | |
bbce6d69 | 1879 | |
46314c13 JP |
1880 | =item Integer overflow in version |
1881 | ||
1882 | (F) Some portion of a version initialization is too large for the | |
1883 | size of integers for your architecture. This is not a warning | |
1884 | because there is no rational reason for a version to try and use a | |
1885 | element larger than typically 2**32. This is usually caused by | |
1886 | trying to use some odd mathematical operation as a version, like | |
1887 | 100/9. | |
1888 | ||
7253e4e3 | 1889 | =item Internal disaster in regex; marked by <-- HERE in m/%s/ |
6df41af2 GS |
1890 | |
1891 | (P) Something went badly wrong in the regular expression parser. | |
7253e4e3 | 1892 | The <-- HERE shows in the regular expression about where the problem was |
b45f050a JF |
1893 | discovered. |
1894 | ||
748a9306 LW |
1895 | =item Internal inconsistency in tracking vforks |
1896 | ||
be771a83 GS |
1897 | (S) A warning peculiar to VMS. Perl keeps track of the number of times |
1898 | you've called C<fork> and C<exec>, to determine whether the current call | |
1899 | to C<exec> should affect the current script or a subprocess (see | |
1900 | L<perlvms/"exec LIST">). Somehow, this count has become scrambled, so | |
1901 | Perl is making a guess and treating this C<exec> as a request to | |
1902 | terminate the Perl script and execute the specified command. | |
748a9306 | 1903 | |
7253e4e3 | 1904 | =item Internal urp in regex; marked by <-- HERE in m/%s/ |
b45f050a | 1905 | |
7253e4e3 RK |
1906 | (P) Something went badly awry in the regular expression parser. The |
1907 | <-- HERE shows in the regular expression about where the problem was | |
1908 | discovered. | |
a0d0e21e | 1909 | |
6df41af2 GS |
1910 | =item %s (...) interpreted as function |
1911 | ||
75b44862 | 1912 | (W syntax) You've run afoul of the rule that says that any list operator |
be771a83 | 1913 | followed by parentheses turns into a function, with all the list |
64977eb6 | 1914 | operators arguments found inside the parentheses. See |
13a2d996 | 1915 | L<perlop/Terms and List Operators (Leftward)>. |
6df41af2 | 1916 | |
09bef843 SB |
1917 | =item Invalid %s attribute: %s |
1918 | ||
1919 | The indicated attribute for a subroutine or variable was not recognized | |
1920 | by Perl or by a user-supplied handler. See L<attributes>. | |
1921 | ||
1922 | =item Invalid %s attributes: %s | |
1923 | ||
be771a83 GS |
1924 | The indicated attributes for a subroutine or variable were not |
1925 | recognized by Perl or by a user-supplied handler. See L<attributes>. | |
09bef843 | 1926 | |
c635e13b | 1927 | =item Invalid conversion in %s: "%s" |
1928 | ||
be771a83 GS |
1929 | (W printf) Perl does not understand the given format conversion. See |
1930 | L<perlfunc/sprintf>. | |
c635e13b | 1931 | |
7253e4e3 | 1932 | =item Invalid [] range "%s" in regex; marked by <-- HERE in m/%s/ |
6df41af2 GS |
1933 | |
1934 | (F) The range specified in a character class had a minimum character | |
7253e4e3 RK |
1935 | greater than the maximum character. One possibility is that you forgot the |
1936 | C<{}> from your ending C<\x{}> - C<\x> without the curly braces can go only | |
1937 | up to C<ff>. The <-- HERE shows in the regular expression about where the | |
1938 | problem was discovered. See L<perlre>. | |
6df41af2 | 1939 | |
d1573ac7 | 1940 | =item Invalid range "%s" in transliteration operator |
c2e66d9e GS |
1941 | |
1942 | (F) The range specified in the tr/// or y/// operator had a minimum | |
1943 | character greater than the maximum character. See L<perlop>. | |
1944 | ||
09bef843 SB |
1945 | =item Invalid separator character %s in attribute list |
1946 | ||
0120eecf | 1947 | (F) Something other than a colon or whitespace was seen between the |
be771a83 GS |
1948 | elements of an attribute list. If the previous attribute had a |
1949 | parenthesised parameter list, perhaps that list was terminated too soon. | |
1950 | See L<attributes>. | |
09bef843 | 1951 | |
b4581f09 JH |
1952 | =item Invalid separator character %s in PerlIO layer specification %s |
1953 | ||
1954 | (W layer) When pushing layers onto the Perl I/O system, something other than a | |
1955 | colon or whitespace was seen between the elements of a layer list. | |
1956 | If the previous attribute had a parenthesised parameter list, perhaps that | |
1957 | list was terminated too soon. | |
1958 | ||
49704364 | 1959 | =item Invalid type '%s' in %s |
96e4d5b1 | 1960 | |
49704364 WL |
1961 | (F) The given character is not a valid pack or unpack type. |
1962 | See L<perlfunc/pack>. | |
1963 | (W) The given character is not a valid pack or unpack type but used to be | |
75b44862 | 1964 | silently ignored. |
96e4d5b1 | 1965 | |
46314c13 JP |
1966 | =item Invalid version format (multiple underscores) |
1967 | ||
1968 | (F) Versions may contain at most a single underscore, which signals | |
1969 | that the version is a beta release. See L<version> for the allowed | |
1970 | version formats. | |
1971 | ||
1972 | =item Invalid version format (underscores before decimal) | |
1973 | ||
1974 | (F) Versions may not contain decimals after the optional underscore. | |
1975 | See L<version> for the allowed version formats. | |
1976 | ||
a0d0e21e LW |
1977 | =item ioctl is not implemented |
1978 | ||
1979 | (F) Your machine apparently doesn't implement ioctl(), which is pretty | |
1980 | strange for a machine that supports C. | |
1981 | ||
c289d2f7 JH |
1982 | =item ioctl() on unopened %s |
1983 | ||
1984 | (W unopened) You tried ioctl() on a filehandle that was never opened. | |
1985 | Check you control flow and number of arguments. | |
1986 | ||
363c40c4 SB |
1987 | =item IO layers (like "%s") unavailable |
1988 | ||
1989 | (F) Your Perl has not been configured to have PerlIO, and therefore | |
1990 | you cannot use IO layers. To have PerlIO Perl must be configured | |
1991 | with 'useperlio'. | |
1992 | ||
80cbd5ad JH |
1993 | =item IO::Socket::atmark not implemented on this architecture |
1994 | ||
1995 | (F) Your machine doesn't implement the sockatmark() functionality, | |
1996 | neither as a system call or an ioctl call (SIOCATMARK). | |
1997 | ||
b4581f09 JH |
1998 | =item $* is no longer supported |
1999 | ||
2000 | (D deprecated) The special variable C<$*>, deprecated in older perls, has | |
2001 | been removed as of 5.9.0 and is no longer supported. You should use the | |
2002 | C<//m> and C<//s> regexp modifiers instead. | |
2003 | ||
6ad11d81 JH |
2004 | =item `%s' is not a code reference |
2005 | ||
04a80ee0 RGS |
2006 | (W overload) The second (fourth, sixth, ...) argument of overload::constant |
2007 | needs to be a code reference. Either an anonymous subroutine, or a reference | |
6ad11d81 JH |
2008 | to a subroutine. |
2009 | ||
2010 | =item `%s' is not an overloadable type | |
2011 | ||
04a80ee0 RGS |
2012 | (W overload) You tried to overload a constant type the overload package is |
2013 | unaware of. | |
6ad11d81 | 2014 | |
a0d0e21e LW |
2015 | =item junk on end of regexp |
2016 | ||
2017 | (P) The regular expression parser is confused. | |
2018 | ||
2019 | =item Label not found for "last %s" | |
2020 | ||
be771a83 GS |
2021 | (F) You named a loop to break out of, but you're not currently in a loop |
2022 | of that name, not even if you count where you were called from. See | |
2023 | L<perlfunc/last>. | |
a0d0e21e LW |
2024 | |
2025 | =item Label not found for "next %s" | |
2026 | ||
2027 | (F) You named a loop to continue, but you're not currently in a loop of | |
2028 | that name, not even if you count where you were called from. See | |
2029 | L<perlfunc/last>. | |
2030 | ||
2031 | =item Label not found for "redo %s" | |
2032 | ||
2033 | (F) You named a loop to restart, but you're not currently in a loop of | |
2034 | that name, not even if you count where you were called from. See | |
2035 | L<perlfunc/last>. | |
2036 | ||
85ab1d1d | 2037 | =item leaving effective %s failed |
5ff3f7a4 | 2038 | |
85ab1d1d | 2039 | (F) While under the C<use filetest> pragma, switching the real and |
5ff3f7a4 GS |
2040 | effective uids or gids failed. |
2041 | ||
49704364 WL |
2042 | =item length/code after end of string in unpack |
2043 | ||
2044 | (F) While unpacking, the string buffer was alread used up when an unpack | |
2045 | length/code combination tried to obtain more data. This results in | |
2046 | an undefined value for the length. See L<perlfunc/pack>. | |
2047 | ||
69282e91 | 2048 | =item listen() on closed socket %s |
a0d0e21e | 2049 | |
be771a83 GS |
2050 | (W closed) You tried to do a listen on a closed socket. Did you forget |
2051 | to check the return value of your socket() call? See | |
2052 | L<perlfunc/listen>. | |
a0d0e21e | 2053 | |
49704364 | 2054 | =item Lookbehind longer than %d not implemented in regex; marked by <-- HERE in m/%s/ |
b45f050a JF |
2055 | |
2056 | (F) There is currently a limit on the length of string which lookbehind can | |
7253e4e3 RK |
2057 | handle. This restriction may be eased in a future release. The <-- HERE |
2058 | shows in the regular expression about where the problem was discovered. | |
2e50fd82 | 2059 | |
2f7da168 RK |
2060 | =item lstat() on filehandle %s |
2061 | ||
2062 | (W io) You tried to do an lstat on a filehandle. What did you mean | |
2063 | by that? lstat() makes sense only on filenames. (Perl did a fstat() | |
2064 | instead on the filehandle.) | |
2065 | ||
96ebfdd7 RK |
2066 | =item Lvalue subs returning %s not implemented yet |
2067 | ||
2068 | (F) Due to limitations in the current implementation, array and hash | |
2069 | values cannot be returned in subroutines used in lvalue context. See | |
2070 | L<perlsub/"Lvalue subroutines">. | |
2071 | ||
49704364 WL |
2072 | =item Malformed integer in [] in pack |
2073 | ||
2074 | (F) Between the brackets enclosing a numeric repeat count only digits | |
2075 | are permitted. See L<perlfunc/pack>. | |
2076 | ||
2077 | =item Malformed integer in [] in unpack | |
2078 | ||
2079 | (F) Between the brackets enclosing a numeric repeat count only digits | |
2080 | are permitted. See L<perlfunc/pack>. | |
2081 | ||
6df41af2 GS |
2082 | =item Malformed PERLLIB_PREFIX |
2083 | ||
2084 | (F) An error peculiar to OS/2. PERLLIB_PREFIX should be of the form | |
2085 | ||
2086 | prefix1;prefix2 | |
2087 | ||
2088 | or | |
6df41af2 GS |
2089 | prefix1 prefix2 |
2090 | ||
be771a83 GS |
2091 | with nonempty prefix1 and prefix2. If C<prefix1> is indeed a prefix of |
2092 | a builtin library search path, prefix2 is substituted. The error may | |
2093 | appear if components are not found, or are too long. See | |
fecfaeb8 | 2094 | "PERLLIB_PREFIX" in L<perlos2>. |
6df41af2 | 2095 | |
2f758a16 ST |
2096 | =item Malformed prototype for %s: %s |
2097 | ||
d37a9538 ST |
2098 | (F) You tried to use a function with a malformed prototype. The |
2099 | syntax of function prototypes is given a brief compile-time check for | |
2100 | obvious errors like invalid characters. A more rigorous check is run | |
2101 | when the function is called. | |
2f758a16 | 2102 | |
ba210ebe JH |
2103 | =item Malformed UTF-8 character (%s) |
2104 | ||
10749184 | 2105 | (W utf8) Perl detected something that didn't comply with UTF-8 encoding rules. |
ba210ebe | 2106 | |
901b21bf JH |
2107 | One possible cause is that you read in data that you thought to be in |
2108 | UTF-8 but it wasn't (it was for example legacy 8-bit data). Another | |
2109 | possibility is careless use of utf8::upgrade(). | |
2110 | ||
dea0fc0b JH |
2111 | =item Malformed UTF-16 surrogate |
2112 | ||
2113 | Perl thought it was reading UTF-16 encoded character data but while | |
2114 | doing it Perl met a malformed Unicode surrogate. | |
2115 | ||
49704364 | 2116 | =item %s matches null string many times in regex; marked by <-- HERE in m/%s/ |
6df41af2 GS |
2117 | |
2118 | (W regexp) The pattern you've specified would be an infinite loop if the | |
7253e4e3 RK |
2119 | regular expression engine didn't specifically check for that. The <-- HERE |
2120 | shows in the regular expression about where the problem was discovered. | |
2121 | See L<perlre>. | |
6df41af2 | 2122 | |
25f58aea PN |
2123 | =item "%s" may clash with future reserved word |
2124 | ||
2125 | (W) This warning may be due to running a perl5 script through a perl4 | |
2126 | interpreter, especially if the word that is being warned about is | |
2127 | "use" or "my". | |
2128 | ||
49704364 | 2129 | =item % may not be used in pack |
6df41af2 GS |
2130 | |
2131 | (F) You can't pack a string by supplying a checksum, because the | |
be771a83 GS |
2132 | checksumming process loses information, and you can't go the other way. |
2133 | See L<perlfunc/unpack>. | |
6df41af2 | 2134 | |
a0d0e21e LW |
2135 | =item Method for operation %s not found in package %s during blessing |
2136 | ||
2137 | (F) An attempt was made to specify an entry in an overloading table that | |
e7ea3e70 | 2138 | doesn't resolve to a valid subroutine. See L<overload>. |
a0d0e21e | 2139 | |
3cdd684c TP |
2140 | =item Method %s not permitted |
2141 | ||
2142 | See Server error. | |
2143 | ||
a0d0e21e LW |
2144 | =item Might be a runaway multi-line %s string starting on line %d |
2145 | ||
2146 | (S) An advisory indicating that the previous error may have been caused | |
2147 | by a missing delimiter on a string or pattern, because it eventually | |
2148 | ended earlier on the current line. | |
2149 | ||
2150 | =item Misplaced _ in number | |
2151 | ||
d4ced10d JH |
2152 | (W syntax) An underscore (underbar) in a numeric constant did not |
2153 | separate two digits. | |
a0d0e21e | 2154 | |
9e81e6a1 RGS |
2155 | =item Missing argument to -%c |
2156 | ||
2157 | (F) The argument to the indicated command line switch must follow | |
2158 | immediately after the switch, without intervening spaces. | |
2159 | ||
4a2d328f | 2160 | =item Missing %sbrace%s on \N{} |
423cee85 | 2161 | |
4a2d328f | 2162 | (F) Wrong syntax of character name literal C<\N{charname}> within |
423cee85 JH |
2163 | double-quotish context. |
2164 | ||
a0d0e21e LW |
2165 | =item Missing comma after first argument to %s function |
2166 | ||
2167 | (F) While certain functions allow you to specify a filehandle or an | |
2168 | "indirect object" before the argument list, this ain't one of them. | |
2169 | ||
06eaf0bc GS |
2170 | =item Missing command in piped open |
2171 | ||
be771a83 GS |
2172 | (W pipe) You used the C<open(FH, "| command")> or |
2173 | C<open(FH, "command |")> construction, but the command was missing or | |
2174 | blank. | |
06eaf0bc | 2175 | |
961ce445 RGS |
2176 | =item Missing control char name in \c |
2177 | ||
2178 | (F) A double-quoted string ended with "\c", without the required control | |
2179 | character name. | |
2180 | ||
6df41af2 GS |
2181 | =item Missing name in "my sub" |
2182 | ||
be771a83 GS |
2183 | (F) The reserved syntax for lexically scoped subroutines requires that |
2184 | they have a name with which they can be found. | |
6df41af2 GS |
2185 | |
2186 | =item Missing $ on loop variable | |
2187 | ||
be771a83 GS |
2188 | (F) Apparently you've been programming in B<csh> too much. Variables |
2189 | are always mentioned with the $ in Perl, unlike in the shells, where it | |
2190 | can vary from one line to the next. | |
6df41af2 | 2191 | |
cc507455 | 2192 | =item (Missing operator before %s?) |
748a9306 | 2193 | |
56da5a46 RGS |
2194 | (S syntax) This is an educated guess made in conjunction with the message |
2195 | "%s found where operator expected". Often the missing operator is a comma. | |
748a9306 | 2196 | |
ab13f0c7 JH |
2197 | =item Missing right brace on %s |
2198 | ||
2199 | (F) Missing right brace in C<\p{...}> or C<\P{...}>. | |
2200 | ||
d98d5fff | 2201 | =item Missing right curly or square bracket |
a0d0e21e | 2202 | |
be771a83 GS |
2203 | (F) The lexer counted more opening curly or square brackets than closing |
2204 | ones. As a general rule, you'll find it's missing near the place you | |
2205 | were last editing. | |
a0d0e21e | 2206 | |
6df41af2 GS |
2207 | =item (Missing semicolon on previous line?) |
2208 | ||
56da5a46 RGS |
2209 | (S syntax) This is an educated guess made in conjunction with the message |
2210 | "%s found where operator expected". Don't automatically put a semicolon on | |
6df41af2 GS |
2211 | the previous line just because you saw this message. |
2212 | ||
a0d0e21e LW |
2213 | =item Modification of a read-only value attempted |
2214 | ||
2215 | (F) You tried, directly or indirectly, to change the value of a | |
5f05dabc | 2216 | constant. You didn't, of course, try "2 = 1", because the compiler |
a0d0e21e LW |
2217 | catches that. But an easy way to do the same thing is: |
2218 | ||
2219 | sub mod { $_[0] = 1 } | |
2220 | mod(2); | |
2221 | ||
2222 | Another way is to assign to a substr() that's off the end of the string. | |
2223 | ||
c5674021 |
2224 | Yet another way is to assign to a C<foreach> loop I<VAR> when I<VAR> |
2225 | is aliased to a constant in the look I<LIST>: | |
2226 | ||
2227 | $x = 1; | |
2228 | foreach my $n ($x, 2) { | |
2229 | $n *= 2; # modifies the $x, but fails on attempt to modify the 2 | |
64977eb6 | 2230 | } |
c5674021 | 2231 | |
7a4340ed | 2232 | =item Modification of non-creatable array value attempted, %s |
a0d0e21e LW |
2233 | |
2234 | (F) You tried to make an array value spring into existence, and the | |
2235 | subscript was probably negative, even counting from end of the array | |
2236 | backwards. | |
2237 | ||
7a4340ed | 2238 | =item Modification of non-creatable hash value attempted, %s |
a0d0e21e | 2239 | |
be771a83 GS |
2240 | (P) You tried to make a hash value spring into existence, and it |
2241 | couldn't be created for some peculiar reason. | |
a0d0e21e LW |
2242 | |
2243 | =item Module name must be constant | |
2244 | ||
2245 | (F) Only a bare module name is allowed as the first argument to a "use". | |
2246 | ||
be98fb35 | 2247 | =item Module name required with -%c option |
6df41af2 | 2248 | |
be98fb35 GS |
2249 | (F) The C<-M> or C<-m> options say that Perl should load some module, but |
2250 | you omitted the name of the module. Consult L<perlrun> for full details | |
2251 | about C<-M> and C<-m>. | |
6df41af2 | 2252 | |
ed9aa3b7 SG |
2253 | =item More than one argument to open |
2254 | ||
2255 | (F) The C<open> function has been asked to open multiple files. This | |
2256 | can happen if you are trying to open a pipe to a command that takes a | |
2257 | list of arguments, but have forgotten to specify a piped open mode. | |
2258 | See L<perlfunc/open> for details. | |
2259 | ||
a0d0e21e LW |
2260 | =item msg%s not implemented |
2261 | ||
2262 | (F) You don't have System V message IPC on your system. | |
2263 | ||
2264 | =item Multidimensional syntax %s not supported | |
2265 | ||
75b44862 GS |
2266 | (W syntax) Multidimensional arrays aren't written like C<$foo[1,2,3]>. |
2267 | They're written like C<$foo[1][2][3]>, as in C. | |
8b1a09fc | 2268 | |
49704364 | 2269 | =item '/' must be followed by 'a*', 'A*' or 'Z*' |
09bef843 | 2270 | |
6df41af2 | 2271 | (F) You had a pack template indicating a counted-length string, |
be771a83 GS |
2272 | Currently the only things that can have their length counted are a*, A* |
2273 | or Z*. See L<perlfunc/pack>. | |
6df41af2 | 2274 | |
49704364 | 2275 | =item '/' must follow a numeric type in unpack |
6df41af2 | 2276 | |
49704364 WL |
2277 | (F) You had an unpack template that contained a '/', but this did not |
2278 | follow some unpack specification producing a numeric value. | |
2279 | See L<perlfunc/pack>. | |
6df41af2 GS |
2280 | |
2281 | =item "my sub" not yet implemented | |
2282 | ||
be771a83 GS |
2283 | (F) Lexically scoped subroutines are not yet implemented. Don't try |
2284 | that yet. | |
6df41af2 GS |
2285 | |
2286 | =item "my" variable %s can't be in a package | |
2287 | ||
be771a83 GS |
2288 | (F) Lexically scoped variables aren't in a package, so it doesn't make |
2289 | sense to try to declare one with a package qualifier on the front. Use | |
2290 | local() if you want to localize a package variable. | |
09bef843 | 2291 | |
8b1a09fc | 2292 | =item Name "%s::%s" used only once: possible typo |
2293 | ||
e476b1b5 | 2294 | (W once) Typographical errors often show up as unique variable names. |
be771a83 GS |
2295 | If you had a good reason for having a unique name, then just mention it |
2296 | again somehow to suppress the message. The C<our> declaration is | |
77ca0c92 | 2297 | provided for this purpose. |
a0d0e21e | 2298 | |
64b374f4 FD |
2299 | NOTE: This warning detects symbols that have been used only once so $c, @c, |
2300 | %c, *c, &c, sub c{}, c(), and c (the filehandle or format) are considered | |
2301 | the same; if a program uses $c only once but also uses any of the others it | |
2302 | will not trigger this warning. | |
2303 | ||
49704364 WL |
2304 | =item Negative '/' count in unpack |
2305 | ||
2306 | (F) The length count obtained from a length/code unpack operation was | |
2307 | negative. See L<perlfunc/pack>. | |
2308 | ||
a0d0e21e LW |
2309 | =item Negative length |
2310 | ||
be771a83 GS |
2311 | (F) You tried to do a read/write/send/recv operation with a buffer |
2312 | length that is less than 0. This is difficult to imagine. | |
a0d0e21e | 2313 | |
ed9aa3b7 SG |
2314 | =item Negative offset to vec in lvalue context |
2315 | ||
2316 | (F) When C<vec> is called in an lvalue context, the second argument must be | |
2317 | greater than or equal to zero. | |
2318 | ||
7253e4e3 | 2319 | =item Nested quantifiers in regex; marked by <-- HERE in m/%s/ |
a0d0e21e | 2320 | |
b45f050a | 2321 | (F) You can't quantify a quantifier without intervening parentheses. So |
7253e4e3 | 2322 | things like ** or +* or ?* are illegal. The <-- HERE shows in the regular |
b45f050a | 2323 | expression about where the problem was discovered. |
a0d0e21e | 2324 | |
7253e4e3 | 2325 | Note that the minimal matching quantifiers, C<*?>, C<+?>, and |
be771a83 | 2326 | C<??> appear to be nested quantifiers, but aren't. See L<perlre>. |
a0d0e21e | 2327 | |
6df41af2 | 2328 | =item %s never introduced |
a0d0e21e | 2329 | |
be771a83 GS |
2330 | (S internal) The symbol in question was declared but somehow went out of |
2331 | scope before it could possibly have been used. | |
a0d0e21e LW |
2332 | |
2333 | =item No %s allowed while running setuid | |
2334 | ||
be771a83 GS |
2335 | (F) Certain operations are deemed to be too insecure for a setuid or |
2336 | setgid script to even be allowed to attempt. Generally speaking there | |
2337 | will be another way to do what you want that is, if not secure, at least | |
2338 | securable. See L<perlsec>. | |
a0d0e21e | 2339 | |
a0d0e21e LW |
2340 | =item No comma allowed after %s |
2341 | ||
2342 | (F) A list operator that has a filehandle or "indirect object" is not | |
2343 | allowed to have a comma between that and the following arguments. | |
2344 | Otherwise it'd be just another one of the arguments. | |
2345 | ||
0a753a76 | 2346 | One possible cause for this is that you expected to have imported a |
2347 | constant to your name space with B<use> or B<import> while no such | |
2348 | importing took place, it may for example be that your operating system | |
2349 | does not support that particular constant. Hopefully you did use an | |
2350 | explicit import list for the constants you expect to see, please see | |
2351 | L<perlfunc/use> and L<perlfunc/import>. While an explicit import list | |
2352 | would probably have caught this error earlier it naturally does not | |
2353 | remedy the fact that your operating system still does not support that | |
2354 | constant. Maybe you have a typo in the constants of the symbol import | |
2355 | list of B<use> or B<import> or in the constant name at the line where | |
2356 | this error was triggered? | |
2357 | ||
748a9306 LW |
2358 | =item No command into which to pipe on command line |
2359 | ||
be771a83 GS |
2360 | (F) An error peculiar to VMS. Perl handles its own command line |
2361 | redirection, and found a '|' at the end of the command line, so it | |
2362 | doesn't know where you want to pipe the output from this command. | |
748a9306 | 2363 | |
a0d0e21e LW |
2364 | =item No DB::DB routine defined |
2365 | ||
be771a83 GS |
2366 | (F) The currently executing code was compiled with the B<-d> switch, but |
2367 | for some reason the perl5db.pl file (or some facsimile thereof) didn't | |
2368 | define a routine to be called at the beginning of each statement. Which | |
2369 | is odd, because the file should have been required automatically, and | |
2370 | should have blown up the require if it didn't parse right. | |
a0d0e21e LW |
2371 | |
2372 | =item No dbm on this machine | |
2373 | ||
2374 | (P) This is counted as an internal error, because every machine should | |
5f05dabc | 2375 | supply dbm nowadays, because Perl comes with SDBM. See L<SDBM_File>. |
a0d0e21e LW |
2376 | |
2377 | =item No DBsub routine | |
2378 | ||
2379 | (F) The currently executing code was compiled with the B<-d> switch, | |
2380 | but for some reason the perl5db.pl file (or some facsimile thereof) | |
2381 | didn't define a DB::sub routine to be called at the beginning of each | |
2382 | ordinary subroutine call. | |
2383 | ||
96ebfdd7 RK |
2384 | =item No B<-e> allowed in setuid scripts |
2385 | ||
2386 | (F) A setuid script can't be specified by the user. | |
2387 | ||
c47ff5f1 | 2388 | =item No error file after 2> or 2>> on command line |
748a9306 | 2389 | |
be771a83 GS |
2390 | (F) An error peculiar to VMS. Perl handles its own command line |
2391 | redirection, and found a '2>' or a '2>>' on the command line, but can't | |
2392 | find the name of the file to which to write data destined for stderr. | |
748a9306 | 2393 | |
49704364 WL |
2394 | =item No group ending character '%c' found in template |
2395 | ||
2396 | (F) A pack or unpack template has an opening '(' or '[' without its | |
2397 | matching counterpart. See L<perlfunc/pack>. | |
2398 | ||
c47ff5f1 | 2399 | =item No input file after < on command line |
748a9306 | 2400 | |
be771a83 GS |
2401 | (F) An error peculiar to VMS. Perl handles its own command line |
2402 | redirection, and found a '<' on the command line, but can't find the | |
2403 | name of the file from which to read data for stdin. | |
748a9306 | 2404 | |
6df41af2 GS |
2405 | =item No #! line |
2406 | ||
2407 | (F) The setuid emulator requires that scripts have a well-formed #! line | |
2408 | even on machines that don't support the #! construct. | |
2409 | ||
2410 | =item "no" not allowed in expression | |
2411 | ||
be771a83 GS |
2412 | (F) The "no" keyword is recognized and executed at compile time, and |
2413 | returns no useful value. See L<perlmod>. | |
6df41af2 | 2414 | |
c47ff5f1 | 2415 | =item No output file after > on command line |
748a9306 | 2416 | |
be771a83 GS |
2417 | (F) An error peculiar to VMS. Perl handles its own command line |
2418 | redirection, and found a lone '>' at the end of the command line, so it | |
2419 | doesn't know where you wanted to redirect stdout. | |
748a9306 | 2420 | |
c47ff5f1 | 2421 | =item No output file after > or >> on command line |
748a9306 | 2422 | |
be771a83 GS |
2423 | (F) An error peculiar to VMS. Perl handles its own command line |
2424 | redirection, and found a '>' or a '>>' on the command line, but can't | |
2425 | find the name of the file to which to write data destined for stdout. | |
748a9306 | 2426 | |
1ec3e8de GS |
2427 | =item No package name allowed for variable %s in "our" |
2428 | ||
be771a83 GS |
2429 | (F) Fully qualified variable names are not allowed in "our" |
2430 | declarations, because that doesn't make much sense under existing | |
2431 | semantics. Such syntax is reserved for future extensions. | |
1ec3e8de | 2432 | |
a0d0e21e LW |
2433 | =item No Perl script found in input |
2434 | ||
2435 | (F) You called C<perl -x>, but no line was found in the file beginning | |
2436 | with #! and containing the word "perl". | |
2437 | ||
2438 | =item No setregid available | |
2439 | ||
2440 | (F) Configure didn't find anything resembling the setregid() call for | |
2441 | your system. | |
2442 | ||
2443 | =item No setreuid available | |
2444 | ||
2445 | (F) Configure didn't find anything resembling the setreuid() call for | |
2446 | your system. | |
2447 | ||
6df41af2 GS |
2448 | =item No %s specified for -%c |
2449 | ||
2450 | (F) The indicated command line switch needs a mandatory argument, but | |
2451 | you haven't specified one. | |
2452 | ||
e75d1f10 RD |
2453 | =item No such class field "%s" in variable %s of type %s |
2454 | ||
2455 | (F) You tried to access a key from a hash through the indicated typed variable | |
2456 | but that key is not allowed by the package of the same type. The indicated | |
2457 | package has restricted the set of allowed keys using the L<fields> pragma. | |
2458 | ||
2c692339 RGS |
2459 | =item No such class %s |
2460 | ||
2461 | (F) You provided a class qualifier in a "my" or "our" declaration, but | |
2462 | this class doesn't exist at this point in your program. | |
2463 | ||
6df41af2 GS |
2464 | =item No such pipe open |
2465 | ||
2466 | (P) An error peculiar to VMS. The internal routine my_pclose() tried to | |
be771a83 GS |
2467 | close a pipe which hadn't been opened. This should have been caught |
2468 | earlier as an attempt to close an unopened filehandle. | |
6df41af2 | 2469 | |
a0d0e21e LW |
2470 | =item No such signal: SIG%s |
2471 | ||
be771a83 GS |
2472 | (W signal) You specified a signal name as a subscript to %SIG that was |
2473 | not recognized. Say C<kill -l> in your shell to see the valid signal | |
2474 | names on your system. | |
a0d0e21e LW |
2475 | |
2476 | =item Not a CODE reference | |
2477 | ||
2478 | (F) Perl was trying to evaluate a reference to a code value (that is, a | |
2479 | subroutine), but found a reference to something else instead. You can | |
be771a83 GS |
2480 | use the ref() function to find out what kind of ref it really was. See |
2481 | also L<perlref>. | |
a0d0e21e LW |
2482 | |
2483 | =item Not a format reference | |
2484 | ||
2485 | (F) I'm not sure how you managed to generate a reference to an anonymous | |
2486 | format, but this indicates you did, and that it didn't exist. | |
2487 | ||
2488 | =item Not a GLOB reference | |
2489 | ||
be771a83 GS |
2490 | (F) Perl was trying to evaluate a reference to a "typeglob" (that is, a |
2491 | symbol table entry that looks like C<*foo>), but found a reference to | |
2492 | something else instead. You can use the ref() function to find out what | |
2493 | kind of ref it really was. See L<perlref>. | |
a0d0e21e LW |
2494 | |
2495 | =item Not a HASH reference | |
2496 | ||
be771a83 GS |
2497 | (F) Perl was trying to evaluate a reference to a hash value, but found a |
2498 | reference to something else instead. You can use the ref() function to | |
2499 | find out what kind of ref it really was. See L<perlref>. | |
a0d0e21e | 2500 | |
6df41af2 GS |
2501 | =item Not an ARRAY reference |
2502 | ||
be771a83 GS |
2503 | (F) Perl was trying to evaluate a reference to an array value, but found |
2504 | a reference to something else instead. You can use the ref() function | |
2505 | to find out what kind of ref it really was. See L<perlref>. | |
6df41af2 | 2506 | |
a0d0e21e LW |
2507 | =item Not a perl script |
2508 | ||
2509 | (F) The setuid emulator requires that scripts have a well-formed #! line | |
2510 | even on machines that don't support the #! construct. The line must | |
2511 | mention perl. | |
2512 | ||
2513 | =item Not a SCALAR reference | |
2514 | ||
be771a83 GS |
2515 | (F) Perl was trying to evaluate a reference to a scalar value, but found |
2516 | a reference to something else instead. You can use the ref() function | |
2517 | to find out what kind of ref it really was. See L<perlref>. | |
a0d0e21e LW |
2518 | |
2519 | =item Not a subroutine reference | |
2520 | ||
2521 | (F) Perl was trying to evaluate a reference to a code value (that is, a | |
2522 | subroutine), but found a reference to something else instead. You can | |
be771a83 GS |
2523 | use the ref() function to find out what kind of ref it really was. See |
2524 | also L<perlref>. | |
a0d0e21e | 2525 | |
e7ea3e70 | 2526 | =item Not a subroutine reference in overload table |
a0d0e21e LW |
2527 | |
2528 | (F) An attempt was made to specify an entry in an overloading table that | |
8b1a09fc | 2529 | doesn't somehow point to a valid subroutine. See L<overload>. |
a0d0e21e | 2530 | |
a0d0e21e LW |
2531 | =item Not enough arguments for %s |
2532 | ||
2533 | (F) The function requires more arguments than you specified. | |
2534 | ||
6df41af2 GS |
2535 | =item Not enough format arguments |
2536 | ||
be771a83 GS |
2537 | (W syntax) A format specified more picture fields than the next line |
2538 | supplied. See L<perlform>. | |
6df41af2 GS |
2539 | |
2540 | =item %s: not found | |
2541 | ||
be771a83 GS |
2542 | (A) You've accidentally run your script through the Bourne shell instead |
2543 | of Perl. Check the #! line, or manually feed your script into Perl | |
2544 | yourself. | |
6df41af2 GS |
2545 | |
2546 | =item no UTC offset information; assuming local time is UTC | |
a0d0e21e | 2547 | |
6df41af2 GS |
2548 | (S) A warning peculiar to VMS. Perl was unable to find the local |
2549 | timezone offset, so it's assuming that local system time is equivalent | |
be771a83 GS |
2550 | to UTC. If it's not, define the logical name |
2551 | F<SYS$TIMEZONE_DIFFERENTIAL> to translate to the number of seconds which | |
2552 | need to be added to UTC to get local time. | |
a0d0e21e LW |
2553 | |
2554 | =item Null filename used | |
2555 | ||
be771a83 GS |
2556 | (F) You can't require the null filename, especially because on many |
2557 | machines that means the current directory! See L<perlfunc/require>. | |
a0d0e21e | 2558 | |
6df41af2 GS |
2559 | =item NULL OP IN RUN |
2560 | ||
be771a83 GS |
2561 | (P debugging) Some internal routine called run() with a null opcode |
2562 | pointer. | |
6df41af2 | 2563 | |
55497cff | 2564 | =item Null picture in formline |
2565 | ||
2566 | (F) The first argument to formline must be a valid format picture | |
2567 | specification. It was found to be empty, which probably means you | |
2568 | supplied it an uninitialized value. See L<perlform>. | |
2569 | ||
a0d0e21e LW |
2570 | =item Null realloc |
2571 | ||
2572 | (P) An attempt was made to realloc NULL. | |
2573 | ||
2574 | =item NULL regexp argument | |
2575 | ||
5f05dabc | 2576 | (P) The internal pattern matching routines blew it big time. |
a0d0e21e LW |
2577 | |
2578 | =item NULL regexp parameter | |
2579 | ||
2580 | (P) The internal pattern matching routines are out of their gourd. | |
2581 | ||
fc36a67e | 2582 | =item Number too long |
2583 | ||
be771a83 | 2584 | (F) Perl limits the representation of decimal numbers in programs to |
da75cd15 | 2585 | about 250 characters. You've exceeded that length. Future |
be771a83 GS |
2586 | versions of Perl are likely to eliminate this arbitrary limitation. In |
2587 | the meantime, try using scientific notation (e.g. "1e6" instead of | |
2588 | "1_000_000"). | |
fc36a67e | 2589 | |
6df41af2 GS |
2590 | =item Octal number in vector unsupported |
2591 | ||
be771a83 GS |
2592 | (F) Numbers with a leading C<0> are not currently allowed in vectors. |
2593 | The octal number interpretation of such numbers may be supported in a | |
2594 | future version. | |
6df41af2 | 2595 | |
252aa082 JH |
2596 | =item Octal number > 037777777777 non-portable |
2597 | ||
75b44862 | 2598 | (W portable) The octal number you specified is larger than 2**32-1 |
be771a83 GS |
2599 | (4294967295) and therefore non-portable between systems. See |
2600 | L<perlport> for more on portability concerns. | |
252aa082 JH |
2601 | |
2602 | See also L<perlport> for writing portable code. | |
2603 | ||
6ad11d81 JH |
2604 | =item Odd number of arguments for overload::constant |
2605 | ||
04a80ee0 RGS |
2606 | (W overload) The call to overload::constant contained an odd number of |
2607 | arguments. The arguments should come in pairs. | |
6ad11d81 | 2608 | |
b21befc1 MG |
2609 | =item Odd number of elements in anonymous hash |
2610 | ||
2611 | (W misc) You specified an odd number of elements to initialize a hash, | |
2612 | which is odd, because hashes come in key/value pairs. | |
2613 | ||
1930e939 | 2614 | =item Odd number of elements in hash assignment |
a0d0e21e | 2615 | |
be771a83 GS |
2616 | (W misc) You specified an odd number of elements to initialize a hash, |
2617 | which is odd, because hashes come in key/value pairs. | |
a0d0e21e | 2618 | |
bbce6d69 | 2619 | =item Offset outside string |
2620 | ||
2621 | (F) You tried to do a read/write/send/recv operation with an offset | |
be771a83 GS |
2622 | pointing outside the buffer. This is difficult to imagine. The sole |
2623 | exception to this is that C<sysread()>ing past the buffer will extend | |
2624 | the buffer and zero pad the new area. | |
bbce6d69 | 2625 | |
c289d2f7 | 2626 | =item %s() on unopened %s |
2dd78f96 JH |
2627 | |
2628 | (W unopened) An I/O operation was attempted on a filehandle that was | |
2629 | never initialized. You need to do an open(), a sysopen(), or a socket() | |
2630 | call, or call a constructor from the FileHandle package. | |
2631 | ||
96ebfdd7 RK |
2632 | =item -%s on unopened filehandle %s |
2633 | ||
2634 | (W unopened) You tried to invoke a file test operator on a filehandle | |
2635 | that isn't open. Check your control flow. See also L<perlfunc/-X>. | |
2636 | ||
a0d0e21e LW |
2637 | =item oops: oopsAV |
2638 | ||
e476b1b5 | 2639 | (S internal) An internal warning that the grammar is screwed up. |
a0d0e21e LW |
2640 | |
2641 | =item oops: oopsHV | |
2642 | ||
e476b1b5 | 2643 | (S internal) An internal warning that the grammar is screwed up. |
a0d0e21e | 2644 | |
56f7f34b | 2645 | =item Operation `%s': no method found, %s |
44a8e56a | 2646 | |
be771a83 GS |
2647 | (F) An attempt was made to perform an overloaded operation for which no |
2648 | handler was defined. While some handlers can be autogenerated in terms | |
2649 | of other handlers, there is no default handler for any operation, unless | |
2650 | C<fallback> overloading key is specified to be true. See L<overload>. | |
44a8e56a | 2651 | |
748a9306 LW |
2652 | =item Operator or semicolon missing before %s |
2653 | ||
be771a83 GS |
2654 | (S ambiguous) You used a variable or subroutine call where the parser |
2655 | was expecting an operator. The parser has assumed you really meant to | |
2656 | use an operator, but this is highly likely to be incorrect. For | |
2657 | example, if you say "*foo *foo" it will be interpreted as if you said | |
2658 | "*foo * 'foo'". | |
748a9306 | 2659 | |
6df41af2 GS |
2660 | =item "our" variable %s redeclared |
2661 | ||
be771a83 GS |
2662 | (W misc) You seem to have already declared the same global once before |
2663 | in the current lexical scope. | |
6df41af2 | 2664 | |
a80b8354 GS |
2665 | =item Out of memory! |
2666 | ||
2667 | (X) The malloc() function returned 0, indicating there was insufficient | |
be771a83 GS |
2668 | remaining memory (or virtual memory) to satisfy the request. Perl has |
2669 | no option but to exit immediately. | |
a80b8354 | 2670 | |
19a52907 JH |
2671 | At least in Unix you may be able to get past this by increasing your |
2672 | process datasize limits: in csh/tcsh use C<limit> and | |
2673 | C<limit datasize n> (where C<n> is the number of kilobytes) to check | |
2674 | the current limits and change them, and in ksh/bash/zsh use C<ulimit -a> | |
2675 | and C<ulimit -d n>, respectively. | |
2676 | ||
6d3b25aa RGS |
2677 | =item Out of memory during %s extend |
2678 | ||
2679 | (X) An attempt was made to extend an array, a list, or a string beyond | |
2680 | the largest possible memory allocation. | |
2681 | ||
6df41af2 | 2682 | =item Out of memory during "large" request for %s |
a0d0e21e | 2683 | |
6df41af2 GS |
2684 | (F) The malloc() function returned 0, indicating there was insufficient |
2685 | remaining memory (or virtual memory) to satisfy the request. However, | |
be771a83 GS |
2686 | the request was judged large enough (compile-time default is 64K), so a |
2687 | possibility to shut down by trapping this error is granted. | |
a0d0e21e | 2688 | |
1b979e0a | 2689 | =item Out of memory during request for %s |
a0d0e21e | 2690 | |
be771a83 GS |
2691 | (X|F) The malloc() function returned 0, indicating there was |
2692 | insufficient remaining memory (or virtual memory) to satisfy the | |
2693 | request. | |
eff9c6e2 CS |
2694 | |
2695 | The request was judged to be small, so the possibility to trap it | |
2696 | depends on the way perl was compiled. By default it is not trappable. | |
be771a83 GS |
2697 | However, if compiled for this, Perl may use the contents of C<$^M> as an |
2698 | emergency pool after die()ing with this message. In this case the error | |
b022d2d2 IZ |
2699 | is trappable I<once>, and the error message will include the line and file |
2700 | where the failed request happened. | |
55497cff | 2701 | |
1b979e0a IZ |
2702 | =item Out of memory during ridiculously large request |
2703 | ||
2704 | (F) You can't allocate more than 2^31+"small amount" bytes. This error | |
be771a83 GS |
2705 | is most likely to be caused by a typo in the Perl program. e.g., |
2706 | C<$arr[time]> instead of C<$arr[$time]>. | |
1b979e0a | 2707 | |
6df41af2 GS |
2708 | =item Out of memory for yacc stack |
2709 | ||
be771a83 GS |
2710 | (F) The yacc parser wanted to grow its stack so it could continue |
2711 | parsing, but realloc() wouldn't give it more memory, virtual or | |
2712 | otherwise. | |
6df41af2 | 2713 | |
49704364 | 2714 | =item '@' outside of string in unpack |
6df41af2 | 2715 | |
49704364 | 2716 | (F) You had a template that specified an absolute position outside |
6df41af2 GS |
2717 | the string being unpacked. See L<perlfunc/pack>. |
2718 | ||
2719 | =item %s package attribute may clash with future reserved word: %s | |
2720 | ||
be771a83 GS |
2721 | (W reserved) A lowercase attribute name was used that had a |
2722 | package-specific handler. That name might have a meaning to Perl itself | |
2723 | some day, even though it doesn't yet. Perhaps you should use a | |
2724 | mixed-case attribute name, instead. See L<attributes>. | |
6df41af2 | 2725 | |
96ebfdd7 RK |
2726 | =item pack/unpack repeat count overflow |
2727 | ||
2728 | (F) You can't specify a repeat count so large that it overflows your | |
2729 | signed integers. See L<perlfunc/pack>. | |
2730 | ||
a0d0e21e LW |
2731 | =item page overflow |
2732 | ||
be771a83 GS |
2733 | (W io) A single call to write() produced more lines than can fit on a |
2734 | page. See L<perlform>. | |
a0d0e21e | 2735 | |
6df41af2 GS |
2736 | =item panic: %s |
2737 | ||
2738 | (P) An internal error. | |
2739 | ||
a0d0e21e LW |
2740 | =item panic: ck_grep |
2741 | ||
2742 | (P) Failed an internal consistency check trying to compile a grep. | |
2743 | ||
2744 | =item panic: ck_split | |
2745 | ||
2746 | (P) Failed an internal consistency check trying to compile a split. | |
2747 | ||
2748 | =item panic: corrupt saved stack index | |
2749 | ||
be771a83 GS |
2750 | (P) The savestack was requested to restore more localized values than |
2751 | there are in the savestack. | |
a0d0e21e | 2752 | |
810b8aa5 GS |
2753 | =item panic: del_backref |
2754 | ||
2755 | (P) Failed an internal consistency check while trying to reset a weak | |
2756 | reference. | |
2757 | ||
7619c85e RG |
2758 | =item panic: Devel::DProf inconsistent subroutine return |
2759 | ||
2760 | (P) Devel::DProf called a subroutine that exited using goto(LABEL), | |
2761 | last(LABEL) or next(LABEL). Leaving that way a subroutine called from | |
2762 | an XSUB will lead very probably to a crash of the interpreter. This is | |
2763 | a bug that will hopefully one day get fixed. | |
2764 | ||
a0d0e21e LW |
2765 | =item panic: die %s |
2766 | ||
2767 | (P) We popped the context stack to an eval context, and then discovered | |
2768 | it wasn't an eval context. | |
2769 | ||
a0d0e21e LW |
2770 | =item panic: do_subst |
2771 | ||
be771a83 GS |
2772 | (P) The internal pp_subst() routine was called with invalid operational |
2773 | data. | |
a0d0e21e | 2774 | |
2269b42e | 2775 | =item panic: do_trans_%s |
a0d0e21e | 2776 | |
2269b42e | 2777 | (P) The internal do_trans routines were called with invalid operational |
be771a83 | 2778 | data. |
a0d0e21e | 2779 | |
c635e13b | 2780 | =item panic: frexp |
2781 | ||
2782 | (P) The library function frexp() failed, making printf("%f") impossible. | |
2783 | ||
a0d0e21e LW |
2784 | =item panic: goto |
2785 | ||
2786 | (P) We popped the context stack to a context with the specified label, | |
2787 | and then discovered it wasn't a context we know how to do a goto in. | |
2788 | ||
2789 | =item panic: INTERPCASEMOD | |
2790 | ||
2791 | (P) The lexer got into a bad state at a case modifier. | |
2792 | ||
2793 | =item panic: INTERPCONCAT | |
2794 | ||
2795 | (P) The lexer got into a bad state parsing a string with brackets. | |
2796 | ||
e446cec8 IZ |
2797 | =item panic: kid popen errno read |
2798 | ||
2799 | (F) forked child returned an incomprehensible message about its errno. | |
2800 | ||
a0d0e21e LW |
2801 | =item panic: last |
2802 | ||
2803 | (P) We popped the context stack to a block context, and then discovered | |
2804 | it wasn't a block context. | |
2805 | ||
2806 | =item panic: leave_scope clearsv | |
2807 | ||
be771a83 GS |
2808 | (P) A writable lexical variable became read-only somehow within the |
2809 | scope. | |
a0d0e21e LW |
2810 | |
2811 | =item panic: leave_scope inconsistency | |
2812 | ||
2813 | (P) The savestack probably got out of sync. At least, there was an | |
2814 | invalid enum on the top of it. | |
2815 | ||
810b8aa5 GS |
2816 | =item panic: magic_killbackrefs |
2817 | ||
2818 | (P) Failed an internal consistency check while trying to reset all weak | |
2819 | references to an object. | |
2820 | ||
6df41af2 GS |
2821 | =item panic: malloc |
2822 | ||
2823 | (P) Something requested a negative number of bytes of malloc. | |
2824 | ||
a0d0e21e LW |
2825 | =item panic: mapstart |
2826 | ||
2827 | (P) The compiler is screwed up with respect to the map() function. | |
2828 | ||
27d5b266 JH |
2829 | =item panic: memory wrap |
2830 | ||
2831 | (P) Something tried to allocate more memory than possible. | |
2832 | ||
a0d0e21e LW |
2833 | =item panic: null array |
2834 | ||
2835 | (P) One of the internal array routines was passed a null AV pointer. | |
2836 | ||
2837 | =item panic: pad_alloc | |
2838 | ||
2839 | (P) The compiler got confused about which scratch pad it was allocating | |
2840 | and freeing temporaries and lexicals from. | |
2841 | ||
2842 | =item panic: pad_free curpad | |
2843 | ||
2844 | (P) The compiler got confused about which scratch pad it was allocating | |
2845 | and freeing temporaries and lexicals from. | |
2846 | ||
2847 | =item panic: pad_free po | |
2848 | ||
2849 | (P) An invalid scratch pad offset was detected internally. | |
2850 | ||
2851 | =item panic: pad_reset curpad | |
2852 | ||
2853 | (P) The compiler got confused about which scratch pad it was allocating | |
2854 | and freeing temporaries and lexicals from. | |
2855 | ||
2856 | =item panic: pad_sv po | |
2857 | ||
2858 | (P) An invalid scratch pad offset was detected internally. | |
2859 | ||
2860 | =item panic: pad_swipe curpad | |
2861 | ||
2862 | (P) The compiler got confused about which scratch pad it was allocating | |
2863 | and freeing temporaries and lexicals from. | |
2864 | ||
2865 | =item panic: pad_swipe po | |
2866 | ||
2867 | (P) An invalid scratch pad offset was detected internally. | |
2868 | ||
2869 | =item panic: pp_iter | |
2870 | ||
2871 | (P) The foreach iterator got called in a non-loop context frame. | |
2872 | ||
96ebfdd7 RK |
2873 | =item panic: pp_match%s |
2874 | ||
2875 | (P) The internal pp_match() routine was called with invalid operational | |
2876 | data. | |
2877 | ||
2269b42e JH |
2878 | =item panic: pp_split |
2879 | ||
2880 | (P) Something terrible went wrong in setting up for the split. | |
2881 | ||
a0d0e21e LW |
2882 | =item panic: realloc |
2883 | ||
2884 | (P) Something requested a negative number of bytes of realloc. | |
2885 | ||
2886 | =item panic: restartop | |
2887 | ||
2888 | (P) Some internal routine requested a goto (or something like it), and | |
2889 | didn't supply the destination. | |
2890 | ||
2891 | =item panic: return | |
2892 | ||
2893 | (P) We popped the context stack to a subroutine or eval context, and | |
2894 | then discovered it wasn't a subroutine or eval context. | |
2895 | ||
2896 | =item panic: scan_num | |
2897 | ||
2898 | (P) scan_num() got called on something that wasn't a number. | |
2899 | ||
2900 | =item panic: sv_insert | |
2901 | ||
2902 | (P) The sv_insert() routine was told to remove more string than there | |
2903 | was string. | |
2904 | ||
2905 | =item panic: top_env | |
2906 | ||
6224f72b | 2907 | (P) The compiler attempted to do a goto, or something weird like that. |
a0d0e21e | 2908 | |
dea0fc0b JH |
2909 | =item panic: utf16_to_utf8: odd bytelen |
2910 | ||
2911 | (P) Something tried to call utf16_to_utf8 with an odd (as opposed | |
64977eb6 | 2912 | to even) byte length. |
dea0fc0b | 2913 | |
2f7da168 RK |
2914 | =item panic: yylex |
2915 | ||
2916 | (P) The lexer got into a bad state while processing a case modifier. | |
2917 | ||
7b8d334a | 2918 | =item Parentheses missing around "%s" list |
a0d0e21e | 2919 | |
e476b1b5 | 2920 | (W parenthesis) You said something like |
a0d0e21e LW |
2921 | |
2922 | my $foo, $bar = @_; | |
2923 | ||
2924 | when you meant | |
2925 | ||
2926 | my ($foo, $bar) = @_; | |
2927 | ||
54884818 | 2928 | Remember that "my", "our", and "local" bind tighter than comma. |
a0d0e21e | 2929 | |
96ebfdd7 RK |
2930 | =item C<-p> destination: %s |
2931 | ||
2932 | (F) An error occurred during the implicit output invoked by the C<-p> | |
2933 | command-line switch. (This output goes to STDOUT unless you've | |
2934 | redirected it with select().) | |
2935 | ||
2936 | =item (perhaps you forgot to load "%s"?) | |
2937 | ||
2938 | (F) This is an educated guess made in conjunction with the message | |
2939 | "Can't locate object method \"%s\" via package \"%s\"". It often means | |
2940 | that a method requires a package that has not been loaded. | |
2941 | ||
1109a392 MHM |
2942 | =item Perl_my_%s() not available |
2943 | ||
2944 | (F) Your platform has very uncommon byte-order and integer size, | |
2945 | so it was not possible to set up some or all fixed-width byte-order | |
2946 | conversion functions. This is only a problem when you're using the | |
2947 | '<' or '>' modifiers in (un)pack templates. See L<perlfunc/pack>. | |
2948 | ||
6d3b25aa RGS |
2949 | =item Perl %s required--this is only version %s, stopped |
2950 | ||
2951 | (F) The module in question uses features of a version of Perl more | |
2952 | recent than the currently running version. How long has it been since | |
2953 | you upgraded, anyway? See L<perlfunc/require>. | |
2954 | ||
6df41af2 GS |
2955 | =item PERL_SH_DIR too long |
2956 | ||
2957 | (F) An error peculiar to OS/2. PERL_SH_DIR is the directory to find the | |
fecfaeb8 | 2958 | C<sh>-shell in. See "PERL_SH_DIR" in L<perlos2>. |
6df41af2 | 2959 | |
96ebfdd7 RK |
2960 | =item PERL_SIGNALS illegal: "%s" |
2961 | ||
2962 | See L<perlrun/PERL_SIGNALS> for legal values. | |
2963 | ||
6df41af2 GS |
2964 | =item perl: warning: Setting locale failed. |
2965 | ||
2966 | (S) The whole warning message will look something like: | |
2967 | ||
2968 | perl: warning: Setting locale failed. | |
2969 | perl: warning: Please check that your locale settings: | |
2970 | LC_ALL = "En_US", | |
2971 | LANG = (unset) | |
2972 | are supported and installed on your system. | |
2973 | perl: warning: Falling back to the standard locale ("C"). | |
2974 | ||
2975 | Exactly what were the failed locale settings varies. In the above the | |
2976 | settings were that the LC_ALL was "En_US" and the LANG had no value. | |
0ea6b70f JH |
2977 | This error means that Perl detected that you and/or your operating |
2978 | system supplier and/or system administrator have set up the so-called | |
2979 | locale system but Perl could not use those settings. This was not | |
2980 | dead serious, fortunately: there is a "default locale" called "C" that | |
2981 | Perl can and will use, the script will be run. Before you really fix | |
2982 | the problem, however, you will get the same error message each time | |
2983 | you run Perl. How to really fix the problem can be found in | |
2984 | L<perllocale> section B<LOCALE PROBLEMS>. | |
6df41af2 | 2985 | |
a0d0e21e LW |
2986 | =item Permission denied |
2987 | ||
2988 | (F) The setuid emulator in suidperl decided you were up to no good. | |
2989 | ||
bd3fa61c | 2990 | =item pid %x not a child |
748a9306 | 2991 | |
be771a83 GS |
2992 | (W exec) A warning peculiar to VMS. Waitpid() was asked to wait for a |
2993 | process which isn't a subprocess of the current process. While this is | |
2994 | fine from VMS' perspective, it's probably not what you intended. | |
748a9306 | 2995 | |
49704364 | 2996 | =item 'P' must have an explicit size in unpack |
3bf38418 WL |
2997 | |
2998 | (F) The unpack format P must have an explicit size, not "*". | |
2999 | ||
96ebfdd7 RK |
3000 | =item B<-P> not allowed for setuid/setgid script |
3001 | ||
3002 | (F) The script would have to be opened by the C preprocessor by name, | |
3003 | which provides a race condition that breaks security. | |
3004 | ||
3005 | =item POSIX class [:%s:] unknown in regex; marked by <-- HERE in m/%s/ | |
3006 | ||
3007 | (F) The class in the character class [: :] syntax is unknown. The <-- HERE | |
3008 | shows in the regular expression about where the problem was discovered. | |
3009 | Note that the POSIX character classes do B<not> have the C<is> prefix | |
3010 | the corresponding C interfaces have: in other words, it's C<[[:print:]]>, | |
3011 | not C<isprint>. See L<perlre>. | |
3012 | ||
3013 | =item POSIX getpgrp can't take an argument | |
3014 | ||
3015 | (F) Your system has POSIX getpgrp(), which takes no argument, unlike | |
3016 | the BSD version, which takes a pid. | |
3017 | ||
49704364 | 3018 | =item POSIX syntax [%s] belongs inside character classes in regex; marked by <-- HERE in m/%s/ |
b45f050a | 3019 | |
9a0b3859 | 3020 | (W regexp) The character class constructs [: :], [= =], and [. .] go |
7253e4e3 RK |
3021 | I<inside> character classes, the [] are part of the construct, for example: |
3022 | /[012[:alpha:]345]/. Note that [= =] and [. .] are not currently | |
3023 | implemented; they are simply placeholders for future extensions and will | |
3024 | cause fatal errors. The <-- HERE shows in the regular expression about | |
3025 | where the problem was discovered. See L<perlre>. | |
b45f050a | 3026 | |
49704364 | 3027 | =item POSIX syntax [. .] is reserved for future extensions in regex; marked by <-- HERE in m/%s/ |
b45f050a JF |
3028 | |
3029 | (F regexp) Within regular expression character classes ([]) the syntax | |
7253e4e3 RK |
3030 | beginning with "[." and ending with ".]" is reserved for future extensions. |
3031 | If you need to represent those character sequences inside a regular | |
3032 | expression character class, just quote the square brackets with the | |
3033 | backslash: "\[." and ".\]". The <-- HERE shows in the regular expression | |
3034 | about where the problem was discovered. See L<perlre>. | |
b45f050a | 3035 | |
49704364 | 3036 | =item POSIX syntax [= =] is reserved for future extensions in regex; marked by <-- HERE in m/%s/ |
b45f050a | 3037 | |
7253e4e3 RK |
3038 | (F) Within regular expression character classes ([]) the syntax beginning |
3039 | with "[=" and ending with "=]" is reserved for future extensions. If you | |
3040 | need to represent those character sequences inside a regular expression | |
3041 | character class, just quote the square brackets with the backslash: "\[=" | |
3042 | and "=\]". The <-- HERE shows in the regular expression about where the | |
3043 | problem was discovered. See L<perlre>. | |
b45f050a | 3044 | |
bbce6d69 | 3045 | =item Possible attempt to put comments in qw() list |
3046 | ||
e476b1b5 | 3047 | (W qw) qw() lists contain items separated by whitespace; as with literal |
75b44862 | 3048 | strings, comment characters are not ignored, but are instead treated as |
be771a83 GS |
3049 | literal data. (You may have used different delimiters than the |
3050 | parentheses shown here; braces are also frequently used.) | |
bbce6d69 | 3051 | |
774d564b | 3052 | You probably wrote something like this: |
3053 | ||
54310121 | 3054 | @list = qw( |
774d564b | 3055 | a # a comment |
bbce6d69 | 3056 | b # another comment |
774d564b | 3057 | ); |
bbce6d69 | 3058 | |
3059 | when you should have written this: | |
3060 | ||
774d564b | 3061 | @list = qw( |
54310121 | 3062 | a |
3063 | b | |
774d564b | 3064 | ); |
3065 | ||
3066 | If you really want comments, build your list the | |
3067 | old-fashioned way, with quotes and commas: | |
3068 | ||
3069 | @list = ( | |
3070 | 'a', # a comment | |
3071 | 'b', # another comment | |
3072 | ); | |
bbce6d69 | 3073 | |
3074 | =item Possible attempt to separate words with commas | |
3075 | ||
be771a83 GS |
3076 | (W qw) qw() lists contain items separated by whitespace; therefore |
3077 | commas aren't needed to separate the items. (You may have used | |
3078 | different delimiters than the parentheses shown here; braces are also | |
3079 | frequently used.) | |
bbce6d69 | 3080 | |
54310121 | 3081 | You probably wrote something like this: |
bbce6d69 | 3082 | |
774d564b | 3083 | qw! a, b, c !; |
3084 | ||
3085 | which puts literal commas into some of the list items. Write it without | |
3086 | commas if you don't want them to appear in your data: | |
bbce6d69 | 3087 | |
774d564b | 3088 | qw! a b c !; |
bbce6d69 | 3089 | |
a0d0e21e LW |
3090 | =item Possible memory corruption: %s overflowed 3rd argument |
3091 | ||
3092 | (F) An ioctl() or fcntl() returned more than Perl was bargaining for. | |
3093 | Perl guesses a reasonable buffer size, but puts a sentinel byte at the | |
3094 | end of the buffer just in case. This sentinel byte got clobbered, and | |
3095 | Perl assumes that memory is now corrupted. See L<perlfunc/ioctl>. | |
3096 | ||
276b2a0c RGS |
3097 | =item Possible precedence problem on bitwise %c operator |
3098 | ||
3099 | (W precedence) Your program uses a bitwise logical operator in conjunction | |
3100 | with a numeric comparison operator, like this : | |
3101 | ||
3102 | if ($x & $y == 0) { ... } | |
3103 | ||
3104 | This expression is actually equivalent to C<$x & ($y == 0)>, due to the | |
3105 | higher precedence of C<==>. This is probably not what you want. (If you | |
96a925ab YST |
3106 | really meant to write this, disable the warning, or, better, put the |
3107 | parentheses explicitly and write C<$x & ($y == 0)>). | |
276b2a0c | 3108 | |
18623440 PS |
3109 | =item Possible unintended interpolation of %s in string |
3110 | ||
3111 | (W ambiguous) You said something like `@foo' in a double-quoted string | |
32b0a12e AMS |
3112 | but there was no array C<@foo> in scope at the time. If you wanted a |
3113 | literal @foo, then write it as \@foo; otherwise find out what happened | |
3114 | to the array you apparently lost track of. | |
18623440 | 3115 | |
6df41af2 GS |
3116 | =item Possible Y2K bug: %s |
3117 | ||
3118 | (W y2k) You are concatenating the number 19 with another number, which | |
3119 | could be a potential Year 2000 problem. | |
3120 | ||
8cd79558 GS |
3121 | =item pragma "attrs" is deprecated, use "sub NAME : ATTRS" instead |
3122 | ||
a1063b2d | 3123 | (D deprecated) You have written something like this: |
8cd79558 GS |
3124 | |
3125 | sub doit | |
3126 | { | |
3127 | use attrs qw(locked); | |
3128 | } | |
3129 | ||
3130 | You should use the new declaration syntax instead. | |
3131 | ||
3132 | sub doit : locked | |
3133 | { | |
3134 | ... | |
3135 | ||
3136 | The C<use attrs> pragma is now obsolete, and is only provided for | |
3137 | backward-compatibility. See L<perlsub/"Subroutine Attributes">. | |
3138 | ||
a0d0e21e LW |
3139 | =item Precedence problem: open %s should be open(%s) |
3140 | ||
e476b1b5 | 3141 | (S precedence) The old irregular construct |
cb1a09d0 | 3142 | |
a0d0e21e LW |
3143 | open FOO || die; |
3144 | ||
3145 | is now misinterpreted as | |
3146 | ||
3147 | open(FOO || die); | |
3148 | ||
be771a83 GS |
3149 | because of the strict regularization of Perl 5's grammar into unary and |
3150 | list operators. (The old open was a little of both.) You must put | |
3151 | parentheses around the filehandle, or use the new "or" operator instead | |
3152 | of "||". | |
a0d0e21e | 3153 | |
3cdd684c TP |
3154 | =item Premature end of script headers |
3155 | ||
3156 | See Server error. | |
3157 | ||
6df41af2 GS |
3158 | =item printf() on closed filehandle %s |
3159 | ||
be771a83 | 3160 | (W closed) The filehandle you're writing to got itself closed sometime |
c289d2f7 | 3161 | before now. Check your control flow. |
6df41af2 | 3162 | |
9a7dcd9c | 3163 | =item print() on closed filehandle %s |
a0d0e21e | 3164 | |
be771a83 | 3165 | (W closed) The filehandle you're printing on got itself closed sometime |
c289d2f7 | 3166 | before now. Check your control flow. |
a0d0e21e | 3167 | |
6df41af2 | 3168 | =item Process terminated by SIG%s |
a0d0e21e | 3169 | |
6df41af2 GS |
3170 | (W) This is a standard message issued by OS/2 applications, while *nix |
3171 | applications die in silence. It is considered a feature of the OS/2 | |
3172 | port. One can easily disable this by appropriate sighandlers, see | |
3173 | L<perlipc/"Signals">. See also "Process terminated by SIGTERM/SIGINT" | |
fecfaeb8 | 3174 | in L<perlos2>. |
a0d0e21e | 3175 | |
3fe9a6f1 | 3176 | =item Prototype mismatch: %s vs %s |
4633a7c4 | 3177 | |
9a0b3859 | 3178 | (S prototype) The subroutine being declared or defined had previously been |
be771a83 | 3179 | declared or defined with a different function prototype. |
4633a7c4 | 3180 | |
ed9aa3b7 SG |
3181 | =item Prototype not terminated |
3182 | ||
2a6fd447 | 3183 | (F) You've omitted the closing parenthesis in a function prototype |
ed9aa3b7 SG |
3184 | definition. |
3185 | ||
96ebfdd7 RK |
3186 | =item Quantifier follows nothing in regex; marked by <-- HERE in m/%s/ |
3187 | ||
3188 | (F) You started a regular expression with a quantifier. Backslash it if you | |
3189 | meant it literally. The <-- HERE shows in the regular expression about | |
3190 | where the problem was discovered. See L<perlre>. | |
3191 | ||
49704364 | 3192 | =item Quantifier in {,} bigger than %d in regex; marked by <-- HERE in m/%s/ |
9baa0206 | 3193 | |
b45f050a | 3194 | (F) There is currently a limit to the size of the min and max values of the |
7253e4e3 | 3195 | {min,max} construct. The <-- HERE shows in the regular expression about where |
b45f050a | 3196 | the problem was discovered. See L<perlre>. |
9baa0206 | 3197 | |
49704364 | 3198 | =item Quantifier unexpected on zero-length expression; marked by <-- HERE in m/%s/ |
9baa0206 | 3199 | |
b45f050a JF |
3200 | (W regexp) You applied a regular expression quantifier in a place where |
3201 | it makes no sense, such as on a zero-width assertion. Try putting the | |
3202 | quantifier inside the assertion instead. For example, the way to match | |
3203 | "abc" provided that it is followed by three repetitions of "xyz" is | |
3204 | C</abc(?=(?:xyz){3})/>, not C</abc(?=xyz){3}/>. | |
9baa0206 | 3205 | |
7253e4e3 RK |
3206 | The <-- HERE shows in the regular expression about where the problem was |
3207 | discovered. | |
3208 | ||
89ea2908 GA |
3209 | =item Range iterator outside integer range |
3210 | ||
3211 | (F) One (or both) of the numeric arguments to the range operator ".." | |
3212 | are outside the range which can be represented by integers internally. | |
be771a83 GS |
3213 | One possible workaround is to force Perl to use magical string increment |
3214 | by prepending "0" to your numbers. | |
89ea2908 | 3215 | |
96ebfdd7 RK |
3216 | =item readline() on closed filehandle %s |
3217 | ||
3218 | (W closed) The filehandle you're reading from got itself closed sometime | |
3219 | before now. Check your control flow. | |
3220 | ||
b5fe5ca2 SR |
3221 | =item read() on closed filehandle %s |
3222 | ||
3223 | (W closed) You tried to read from a closed filehandle. | |
3224 | ||
3225 | =item read() on unopened filehandle %s | |
3226 | ||
3227 | (W unopened) You tried to read from a filehandle that was never opened. | |
3228 | ||
6df41af2 GS |
3229 | =item Reallocation too large: %lx |
3230 | ||
3231 | (F) You can't allocate more than 64K on an MS-DOS machine. | |
3232 | ||
4ad56ec9 IZ |
3233 | =item realloc() of freed memory ignored |
3234 | ||
be771a83 GS |
3235 | (S malloc) An internal routine called realloc() on something that had |
3236 | already been freed. | |
4ad56ec9 | 3237 | |
a0d0e21e LW |
3238 | =item Recompile perl with B<-D>DEBUGGING to use B<-D> switch |
3239 | ||
be771a83 GS |
3240 | (F debugging) You can't use the B<-D> option unless the code to produce |
3241 | the desired output is compiled into Perl, which entails some overhead, | |
a0d0e21e LW |
3242 | which is why it's currently left out of your copy. |
3243 | ||
3e0ccd42 | 3244 | =item Recursive inheritance detected in package '%s' |
a0d0e21e LW |
3245 | |
3246 | (F) More than 100 levels of inheritance were used. Probably indicates | |
3247 | an unintended loop in your inheritance hierarchy. | |
3248 | ||
7a4340ed | 3249 | =item Recursive inheritance detected while looking for method %s |
3e0ccd42 | 3250 | |
be771a83 GS |
3251 | (F) More than 100 levels of inheritance were encountered while invoking |
3252 | a method. Probably indicates an unintended loop in your inheritance | |
3253 | hierarchy. | |
3e0ccd42 | 3254 | |
1930e939 TP |
3255 | =item Reference found where even-sized list expected |
3256 | ||
be771a83 GS |
3257 | (W misc) You gave a single reference where Perl was expecting a list |
3258 | with an even number of elements (for assignment to a hash). This usually | |
3259 | means that you used the anon hash constructor when you meant to use | |
3260 | parens. In any case, a hash requires key/value B<pairs>. | |
7b8d334a GS |
3261 | |
3262 | %hash = { one => 1, two => 2, }; # WRONG | |
3263 | %hash = [ qw/ an anon array / ]; # WRONG | |
3264 | %hash = ( one => 1, two => 2, ); # right | |
3265 | %hash = qw( one 1 two 2 ); # also fine | |
3266 | ||
810b8aa5 GS |
3267 | =item Reference is already weak |
3268 | ||
e476b1b5 | 3269 | (W misc) You have attempted to weaken a reference that is already weak. |
810b8aa5 GS |
3270 | Doing so has no effect. |
3271 | ||
a0d0e21e LW |
3272 | =item Reference miscount in sv_replace() |
3273 | ||
be771a83 GS |
3274 | (W internal) The internal sv_replace() function was handed a new SV with |
3275 | a reference count of other than 1. | |
a0d0e21e | 3276 | |
49704364 | 3277 | =item Reference to nonexistent group in regex; marked by <-- HERE in m/%s/ |
b45f050a JF |
3278 | |
3279 | (F) You used something like C<\7> in your regular expression, but there are | |
3280 | not at least seven sets of capturing parentheses in the expression. If you | |
3281 | wanted to have the character with value 7 inserted into the regular expression, | |
3282 | prepend a zero to make the number at least two digits: C<\07> | |
9baa0206 | 3283 | |
7253e4e3 | 3284 | The <-- HERE shows in the regular expression about where the problem was |
b45f050a | 3285 | discovered. |
9baa0206 | 3286 | |
a0d0e21e LW |
3287 | =item regexp memory corruption |
3288 | ||
3289 | (P) The regular expression engine got confused by what the regular | |
3290 | expression compiler gave it. | |
3291 | ||
b45f050a | 3292 | =item Regexp out of space |
a0d0e21e | 3293 | |
be771a83 GS |
3294 | (P) A "can't happen" error, because safemalloc() should have caught it |
3295 | earlier. | |
a0d0e21e | 3296 | |
a1b95068 WL |
3297 | =item Repeated format line will never terminate (~~ and @# incompatible) |
3298 | ||
3299 | (F) Your format containes the ~~ repeat-until-blank sequence and a | |
3300 | numeric field that will never go blank so that the repetition never | |
3301 | terminates. You might use ^# instead. See L<perlform>. | |
3302 | ||
a0d0e21e LW |
3303 | =item Reversed %s= operator |
3304 | ||
be771a83 GS |
3305 | (W syntax) You wrote your assignment operator backwards. The = must |
3306 | always comes last, to avoid ambiguity with subsequent unary operators. | |
a0d0e21e LW |
3307 | |
3308 | =item Runaway format | |
3309 | ||
3310 | (F) Your format contained the ~~ repeat-until-blank sequence, but it | |
3311 | produced 200 lines at once, and the 200th line looked exactly like the | |
3312 | 199th line. Apparently you didn't arrange for the arguments to exhaust | |
3313 | themselves, either by using ^ instead of @ (for scalar variables), or by | |
3314 | shifting or popping (for array variables). See L<perlform>. | |
3315 | ||
96ebfdd7 RK |
3316 | =item Scalars leaked: %d |
3317 | ||
3318 | (P) Something went wrong in Perl's internal bookkeeping of scalars: | |
3319 | not all scalar variables were deallocated by the time Perl exited. | |
3320 | What this usually indicates is a memory leak, which is of course bad, | |
3321 | especially if the Perl program is intended to be long-running. | |
3322 | ||
a0d0e21e LW |
3323 | =item Scalar value @%s[%s] better written as $%s[%s] |
3324 | ||
be771a83 GS |
3325 | (W syntax) You've used an array slice (indicated by @) to select a |
3326 | single element of an array. Generally it's better to ask for a scalar | |
3327 | value (indicated by $). The difference is that C<$foo[&bar]> always | |
3328 | behaves like a scalar, both when assigning to it and when evaluating its | |
3329 | argument, while C<@foo[&bar]> behaves like a list when you assign to it, | |
3330 | and provides a list context to its subscript, which can do weird things | |
3331 | if you're expecting only one subscript. | |
a0d0e21e | 3332 | |
748a9306 | 3333 | On the other hand, if you were actually hoping to treat the array |
5f05dabc | 3334 | element as a list, you need to look into how references work, because |
748a9306 LW |
3335 | Perl will not magically convert between scalars and lists for you. See |
3336 | L<perlref>. | |
3337 | ||
a6006777 | 3338 | =item Scalar value @%s{%s} better written as $%s{%s} |
3339 | ||
75b44862 | 3340 | (W syntax) You've used a hash slice (indicated by @) to select a single |
be771a83 GS |
3341 | element of a hash. Generally it's better to ask for a scalar value |
3342 | (indicated by $). The difference is that C<$foo{&bar}> always behaves | |
3343 | like a scalar, both when assigning to it and when evaluating its | |
3344 | argument, while C<@foo{&bar}> behaves like a list when you assign to it, | |
3345 | and provides a list context to its subscript, which can do weird things | |
3346 | if you're expecting only one subscript. | |
3347 | ||
3348 | On the other hand, if you were actually hoping to treat the hash element | |
3349 | as a list, you need to look into how references work, because Perl will | |
3350 | not magically convert between scalars and lists for you. See | |
a6006777 | 3351 | L<perlref>. |
3352 | ||
a0d0e21e LW |
3353 | =item Script is not setuid/setgid in suidperl |
3354 | ||
54310121 | 3355 | (F) Oddly, the suidperl program was invoked on a script without a setuid |
3356 | or setgid bit set. This doesn't make much sense. | |
a0d0e21e LW |
3357 | |
3358 | =item Search pattern not terminated | |
3359 | ||
3360 | (F) The lexer couldn't find the final delimiter of a // or m{} | |
3361 | construct. Remember that bracketing delimiters count nesting level. | |
fb73857a | 3362 | Missing the leading C<$> from a variable C<$m> may cause this error. |
a0d0e21e | 3363 | |
0cb1bcd7 | 3364 | Note that since Perl 5.9.0 a // can also be the I<defined-or> |
5d9c98cd JH |
3365 | construct, not just the empty search pattern. Therefore code written |
3366 | in Perl 5.9.0 or later that uses the // as the I<defined-or> can be | |
3367 | misparsed by pre-5.9.0 Perls as a non-terminated search pattern. | |
3368 | ||
9ddeeac9 | 3369 | =item %sseek() on unopened filehandle |
a0d0e21e | 3370 | |
be771a83 GS |
3371 | (W unopened) You tried to use the seek() or sysseek() function on a |
3372 | filehandle that was either never opened or has since been closed. | |
a0d0e21e LW |
3373 | |
3374 | =item select not implemented | |
3375 | ||
3376 | (F) This machine doesn't implement the select() system call. | |
3377 | ||
ae21d580 | 3378 | =item Self-ties of arrays and hashes are not supported |
68a4a7e4 | 3379 | |
ae21d580 JH |
3380 | (F) Self-ties are of arrays and hashes are not supported in |
3381 | the current implementation. | |
68a4a7e4 | 3382 | |
6df41af2 | 3383 | =item Semicolon seems to be missing |
a0d0e21e | 3384 | |
75b44862 GS |
3385 | (W semicolon) A nearby syntax error was probably caused by a missing |
3386 | semicolon, or possibly some other missing operator, such as a comma. | |
a0d0e21e LW |
3387 | |
3388 | =item semi-panic: attempt to dup freed string | |
3389 | ||
be771a83 GS |
3390 | (S internal) The internal newSVsv() routine was called to duplicate a |
3391 | scalar that had previously been marked as free. | |
a0d0e21e | 3392 | |
6df41af2 | 3393 | =item sem%s not implemented |
a0d0e21e | 3394 | |
6df41af2 | 3395 | (F) You don't have System V semaphore IPC on your system. |
a0d0e21e | 3396 | |
69282e91 | 3397 | =item send() on closed socket %s |
a0d0e21e | 3398 | |
be771a83 | 3399 | (W closed) The socket you're sending to got itself closed sometime |
c289d2f7 | 3400 | before now. Check your control flow. |
a0d0e21e | 3401 | |
7253e4e3 | 3402 | =item Sequence (? incomplete in regex; marked by <-- HERE in m/%s/ |
7b8d334a | 3403 | |
7253e4e3 | 3404 | (F) A regular expression ended with an incomplete extension (?. The <-- HERE |
b45f050a |