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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). |
12 | (S) A severe warning (mandatory). |
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). |
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17 | |
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18 | Optional warnings are enabled by using the B<-w> switch. Warnings may |
68dc0745 |
19 | be captured by setting C<$SIG{__WARN__}> to a reference to a routine that |
20 | will be called on each warning instead of printing it. See L<perlvar>. |
748a9306 |
21 | Trappable errors may be trapped using the eval operator. See |
22 | L<perlfunc/eval>. |
a0d0e21e |
23 | |
24 | Some of these messages are generic. Spots that vary are denoted with a %s, |
2ba9eb46 |
25 | just as in a printf format. Note that some messages start with a %s! |
702d120d |
26 | The symbols C<"%(-?@> sort before the letters, while C<[> and C<\> sort after. |
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27 | |
28 | =over 4 |
29 | |
30 | =item "my" variable %s can't be in a package |
31 | |
32 | (F) Lexically scoped variables aren't in a package, so it doesn't make sense |
33 | to try to declare one with a package qualifier on the front. Use local() |
34 | if you want to localize a package variable. |
35 | |
9fbbe825 |
36 | =item "my" variable %s masks earlier declaration in same %s |
2ba9eb46 |
37 | |
9fbbe825 |
38 | (W) A lexical variable has been redeclared in the current scope or statement, |
39 | effectively eliminating all access to the previous instance. This is almost |
40 | always a typographical error. Note that the earlier variable will still exist |
2ba9eb46 |
41 | until the end of the scope or until all closure referents to it are |
42 | destroyed. |
43 | |
a0d0e21e |
44 | =item "no" not allowed in expression |
45 | |
46 | (F) The "no" keyword is recognized and executed at compile time, and returns |
47 | no useful value. See L<perlmod>. |
48 | |
49 | =item "use" not allowed in expression |
50 | |
51 | (F) The "use" keyword is recognized and executed at compile time, and returns |
52 | no useful value. See L<perlmod>. |
53 | |
f61d411c |
54 | =item '!' allowed only after types %s |
ef54e1a4 |
55 | |
f61d411c |
56 | (F) The '!' is allowed in pack() and unpack() only after certain types. |
57 | See L<perlfunc/pack>. |
ef54e1a4 |
58 | |
43192e07 |
59 | =item # cannot take a count |
60 | |
61 | (F) You had an unpack template indicating a counted-length string, |
62 | but you have also specified an explicit size for the string. |
63 | See L<perlfunc/pack>. |
64 | |
65 | =item # must be followed by a, A or Z |
66 | |
67 | (F) You had an unpack template indicating a counted-length string, |
68 | which must be followed by one of the letters a, A or Z |
69 | to indicate what sort of string is to be unpacked. |
70 | See L<perlfunc/pack>. |
71 | |
72 | =item # must be followed by a*, A* or Z* |
73 | |
74 | (F) You had an pack template indicating a counted-length string, |
75 | Currently the only things that can have their length counted are a*, A* or Z*. |
76 | See L<perlfunc/pack>. |
77 | |
78 | =item # must follow a numeric type |
79 | |
80 | (F) You had an unpack template that contained a '#', |
81 | but this did not follow some numeric unpack specification. |
82 | See L<perlfunc/pack>. |
83 | |
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84 | =item % may only be used in unpack |
85 | |
5f05dabc |
86 | (F) You can't pack a string by supplying a checksum, because the |
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87 | checksumming process loses information, and you can't go the other |
88 | way. See L<perlfunc/unpack>. |
89 | |
c9f97d15 |
90 | =item /%s/: Unrecognized escape \\%c passed through |
91 | |
92 | (W) You used a backslash-character combination which is not recognized |
93 | by Perl. This combination appears in an interpolated variable or a |
94 | C<'>-delimited regular expression. |
95 | |
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96 | =item %s (...) interpreted as function |
97 | |
98 | (W) You've run afoul of the rule that says that any list operator followed |
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99 | by parentheses turns into a function, with all the list operators arguments |
5f05dabc |
100 | found inside the parentheses. See L<perlop/Terms and List Operators (Leftward)>. |
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101 | |
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102 | =item %s() called too early to check prototype |
103 | |
104 | (W) You've called a function that has a prototype before the parser saw a |
105 | definition or declaration for it, and Perl could not check that the call |
106 | conforms to the prototype. You need to either add an early prototype |
107 | declaration for the subroutine in question, or move the subroutine |
108 | definition ahead of the call to get proper prototype checking. Alternatively, |
109 | if you are certain that you're calling the function correctly, you may put |
110 | an ampersand before the name to avoid the warning. See L<perlsub>. |
111 | |
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112 | =item %s argument is not a HASH element |
113 | |
5f05dabc |
114 | (F) The argument to exists() must be a hash element, such as |
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115 | |
116 | $foo{$bar} |
117 | $ref->[12]->{"susie"} |
118 | |
5f05dabc |
119 | =item %s argument is not a HASH element or slice |
120 | |
121 | (F) The argument to delete() must be either a hash element, such as |
122 | |
123 | $foo{$bar} |
124 | $ref->[12]->{"susie"} |
125 | |
126 | or a hash slice, such as |
127 | |
128 | @foo{$bar, $baz, $xyzzy} |
129 | @{$ref->[12]}{"susie", "queue"} |
130 | |
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131 | =item %s did not return a true value |
132 | |
133 | (F) A required (or used) file must return a true value to indicate that |
134 | it compiled correctly and ran its initialization code correctly. It's |
135 | traditional to end such a file with a "1;", though any true value would |
136 | do. See L<perlfunc/require>. |
137 | |
138 | =item %s found where operator expected |
139 | |
140 | (S) The Perl lexer knows whether to expect a term or an operator. If it |
141 | sees what it knows to be a term when it was expecting to see an operator, |
142 | it gives you this warning. Usually it indicates that an operator or |
143 | delimiter was omitted, such as a semicolon. |
144 | |
f86702cc |
145 | =item %s had compilation errors |
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146 | |
147 | (F) The final summary message when a C<perl -c> fails. |
148 | |
f86702cc |
149 | =item %s has too many errors |
a0d0e21e |
150 | |
151 | (F) The parser has given up trying to parse the program after 10 errors. |
152 | Further error messages would likely be uninformative. |
153 | |
154 | =item %s matches null string many times |
155 | |
156 | (W) The pattern you've specified would be an infinite loop if the |
157 | regular expression engine didn't specifically check for that. See L<perlre>. |
158 | |
159 | =item %s never introduced |
160 | |
161 | (S) The symbol in question was declared but somehow went out of scope |
162 | before it could possibly have been used. |
163 | |
164 | =item %s syntax OK |
165 | |
166 | (F) The final summary message when a C<perl -c> succeeds. |
167 | |
f86702cc |
168 | =item %s: Command not found |
cb1a09d0 |
169 | |
170 | (A) You've accidentally run your script through B<csh> instead |
3a52c276 |
171 | of Perl. Check the #! line, or manually feed your script into |
172 | Perl yourself. |
cb1a09d0 |
173 | |
f86702cc |
174 | =item %s: Expression syntax |
cb1a09d0 |
175 | |
176 | (A) You've accidentally run your script through B<csh> instead |
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177 | of Perl. Check the #! line, or manually feed your script into |
178 | Perl yourself. |
cb1a09d0 |
179 | |
f86702cc |
180 | =item %s: Undefined variable |
cb1a09d0 |
181 | |
182 | (A) You've accidentally run your script through B<csh> instead |
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183 | of Perl. Check the #! line, or manually feed your script into |
184 | Perl yourself. |
cb1a09d0 |
185 | |
186 | =item %s: not found |
187 | |
8b1a09fc |
188 | (A) You've accidentally run your script through the Bourne shell |
3a52c276 |
189 | instead of Perl. Check the #! line, or manually feed your script |
cb1a09d0 |
190 | into Perl yourself. |
191 | |
a99e4ac2 |
192 | =item (in cleanup) %s |
193 | |
194 | (W) This prefix usually indicates that a DESTROY() method raised |
195 | the indicated exception. Since destructors are usually called by |
196 | the system at arbitrary points during execution, and often a vast |
197 | number of times, the warning is issued only once for any number |
198 | of failures that would otherwise result in the same message being |
199 | repeated. |
200 | |
201 | Failure of user callbacks dispatched using the C<G_KEEPERR> flag |
202 | could also result in this warning. See L<perlcall/G_KEEPERR>. |
203 | |
702d120d |
204 | =item (Missing semicolon on previous line?) |
205 | |
206 | (S) This is an educated guess made in conjunction with the message "%s |
207 | found where operator expected". Don't automatically put a semicolon on |
208 | the previous line just because you saw this message. |
209 | |
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210 | =item B<-P> not allowed for setuid/setgid script |
211 | |
212 | (F) The script would have to be opened by the C preprocessor by name, |
213 | which provides a race condition that breaks security. |
214 | |
215 | =item C<-T> and C<-B> not implemented on filehandles |
216 | |
217 | (F) Perl can't peek at the stdio buffer of filehandles when it doesn't |
218 | know about your kind of stdio. You'll have to use a filename instead. |
219 | |
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220 | =item C<-p> destination: %s |
221 | |
222 | (F) An error occurred during the implicit output invoked by the C<-p> |
223 | command-line switch. (This output goes to STDOUT unless you've |
224 | redirected it with select().) |
225 | |
a5f75d66 |
226 | =item 500 Server error |
227 | |
228 | See Server error. |
229 | |
a0d0e21e |
230 | =item ?+* follows nothing in regexp |
231 | |
232 | (F) You started a regular expression with a quantifier. Backslash it |
233 | if you meant it literally. See L<perlre>. |
234 | |
235 | =item @ outside of string |
236 | |
2ba9eb46 |
237 | (F) You had a pack template that specified an absolute position outside |
a0d0e21e |
238 | the string being unpacked. See L<perlfunc/pack>. |
239 | |
742c16d1 |
240 | =item <> should be quotes |
241 | |
242 | (F) You wrote C<require E<lt>fileE<gt>> when you should have written |
243 | C<require 'file'>. |
244 | |
a0d0e21e |
245 | =item accept() on closed fd |
246 | |
247 | (W) You tried to do an accept on a closed socket. Did you forget to check |
248 | the return value of your socket() call? See L<perlfunc/accept>. |
249 | |
250 | =item Allocation too large: %lx |
251 | |
54310121 |
252 | (X) You can't allocate more than 64K on an MS-DOS machine. |
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253 | |
2ae324a7 |
254 | =item Applying %s to %s will act on scalar(%s) |
255 | |
2c268ad5 |
256 | (W) The pattern match (//), substitution (s///), and transliteration (tr///) |
2ae324a7 |
257 | operators work on scalar values. If you apply one of them to an array |
258 | or a hash, it will convert the array or hash to a scalar value -- the |
259 | length of an array, or the population info of a hash -- and then work on |
260 | that scalar value. This is probably not what you meant to do. See |
261 | L<perlfunc/grep> and L<perlfunc/map> for alternatives. |
262 | |
a0d0e21e |
263 | =item Arg too short for msgsnd |
264 | |
265 | (F) msgsnd() requires a string at least as long as sizeof(long). |
266 | |
748a9306 |
267 | =item Ambiguous use of %s resolved as %s |
268 | |
269 | (W)(S) You said something that may not be interpreted the way |
270 | you thought. Normally it's pretty easy to disambiguate it by supplying |
5f05dabc |
271 | a missing quote, operator, parenthesis pair or declaration. |
748a9306 |
272 | |
5315574d |
273 | =item Ambiguous call resolved as CORE::%s(), qualify as such or use & |
274 | |
275 | (W) A subroutine you have declared has the same name as a Perl keyword, |
276 | and you have used the name without qualification for calling one or the |
277 | other. Perl decided to call the builtin because the subroutine is |
278 | not imported. |
279 | |
280 | To force interpretation as a subroutine call, either put an ampersand |
281 | before the subroutine name, or qualify the name with its package. |
282 | Alternatively, you can import the subroutine (or pretend that it's |
283 | imported with the C<use subs> pragma). |
284 | |
285 | To silently interpret it as the Perl operator, use the C<CORE::> prefix |
286 | on the operator (e.g. C<CORE::log($x)>) or by declaring the subroutine |
287 | to be an object method (see L<attrs>). |
288 | |
a0d0e21e |
289 | =item Args must match #! line |
290 | |
291 | (F) The setuid emulator requires that the arguments Perl was invoked |
3a52c276 |
292 | with match the arguments specified on the #! line. Since some systems |
293 | impose a one-argument limit on the #! line, try combining switches; |
294 | for example, turn C<-w -U> into C<-wU>. |
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295 | |
f86702cc |
296 | =item Argument "%s" isn't numeric%s |
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297 | |
298 | (W) The indicated string was fed as an argument to an operator that |
299 | expected a numeric value instead. If you're fortunate the message |
300 | will identify which operator was so unfortunate. |
301 | |
302 | =item Array @%s missing the @ in argument %d of %s() |
303 | |
304 | (D) Really old Perl let you omit the @ on array names in some spots. This |
305 | is now heavily deprecated. |
306 | |
307 | =item assertion botched: %s |
308 | |
309 | (P) The malloc package that comes with Perl had an internal failure. |
310 | |
311 | =item Assertion failed: file "%s" |
312 | |
313 | (P) A general assertion failed. The file in question must be examined. |
314 | |
315 | =item Assignment to both a list and a scalar |
316 | |
317 | (F) If you assign to a conditional operator, the 2nd and 3rd arguments |
318 | must either both be scalars or both be lists. Otherwise Perl won't |
319 | know which context to supply to the right side. |
320 | |
321 | =item Attempt to free non-arena SV: 0x%lx |
322 | |
323 | (P) All SV objects are supposed to be allocated from arenas that will |
324 | be garbage collected on exit. An SV was discovered to be outside any |
325 | of those arenas. |
326 | |
54310121 |
327 | =item Attempt to free nonexistent shared string |
bbce6d69 |
328 | |
329 | (P) Perl maintains a reference counted internal table of strings to |
330 | optimize the storage and access of hash keys and other strings. This |
331 | indicates someone tried to decrement the reference count of a string |
332 | that can no longer be found in the table. |
333 | |
a0d0e21e |
334 | =item Attempt to free temp prematurely |
335 | |
336 | (W) Mortalized values are supposed to be freed by the free_tmps() |
337 | routine. This indicates that something else is freeing the SV before |
338 | the free_tmps() routine gets a chance, which means that the free_tmps() |
339 | routine will be freeing an unreferenced scalar when it does try to free |
340 | it. |
341 | |
342 | =item Attempt to free unreferenced glob pointers |
343 | |
344 | (P) The reference counts got screwed up on symbol aliases. |
345 | |
346 | =item Attempt to free unreferenced scalar |
347 | |
348 | (W) Perl went to decrement the reference count of a scalar to see if it |
349 | would go to 0, and discovered that it had already gone to 0 earlier, |
350 | and should have been freed, and in fact, probably was freed. This |
351 | could indicate that SvREFCNT_dec() was called too many times, or that |
352 | SvREFCNT_inc() was called too few times, or that the SV was mortalized |
353 | when it shouldn't have been, or that memory has been corrupted. |
354 | |
dcdda58d |
355 | =item Attempt to join self |
356 | |
357 | (F) You tried to join a thread from within itself, which is an |
358 | impossible task. You may be joining the wrong thread, or you may |
359 | need to move the join() to some other thread. |
360 | |
84902520 |
361 | =item Attempt to pack pointer to temporary value |
362 | |
363 | (W) You tried to pass a temporary value (like the result of a |
364 | function, or a computed expression) to the "p" pack() template. This |
365 | means the result contains a pointer to a location that could become |
366 | invalid anytime, even before the end of the current statement. Use |
367 | literals or global values as arguments to the "p" pack() template to |
368 | avoid this warning. |
369 | |
b7a902f4 |
370 | =item Attempt to use reference as lvalue in substr |
371 | |
372 | (W) You supplied a reference as the first argument to substr() used |
8b1a09fc |
373 | as an lvalue, which is pretty strange. Perhaps you forgot to |
b7a902f4 |
374 | dereference it first. See L<perlfunc/substr>. |
375 | |
a0d0e21e |
376 | =item Bad arg length for %s, is %d, should be %d |
377 | |
378 | (F) You passed a buffer of the wrong size to one of msgctl(), semctl() or |
2ba9eb46 |
379 | shmctl(). In C parlance, the correct sizes are, respectively, |
5f05dabc |
380 | S<sizeof(struct msqid_ds *)>, S<sizeof(struct semid_ds *)>, and |
a0d0e21e |
381 | S<sizeof(struct shmid_ds *)>. |
382 | |
a0d0e21e |
383 | =item Bad filehandle: %s |
384 | |
385 | (F) A symbol was passed to something wanting a filehandle, but the symbol |
386 | has no filehandle associated with it. Perhaps you didn't do an open(), or |
387 | did it in another package. |
388 | |
389 | =item Bad free() ignored |
390 | |
391 | (S) An internal routine called free() on something that had never been |
33c8a3fe |
392 | malloc()ed in the first place. Mandatory, but can be disabled by |
393 | setting environment variable C<PERL_BADFREE> to 1. |
394 | |
395 | This message can be quite often seen with DB_File on systems with |
396 | "hard" dynamic linking, like C<AIX> and C<OS/2>. It is a bug of |
397 | C<Berkeley DB> which is left unnoticed if C<DB> uses I<forgiving> |
398 | system malloc(). |
a0d0e21e |
399 | |
aa689395 |
400 | =item Bad hash |
401 | |
402 | (P) One of the internal hash routines was passed a null HV pointer. |
403 | |
f1192cee |
404 | =item Bad index while coercing array into hash |
405 | |
6f54a448 |
406 | (F) The index looked up in the hash found as the 0'th element of a |
407 | pseudo-hash is not legal. Index values must be at 1 or greater. |
408 | See L<perlref>. |
57079c46 |
409 | |
a0d0e21e |
410 | =item Bad name after %s:: |
411 | |
412 | (F) You started to name a symbol by using a package prefix, and then didn't |
413 | finish the symbol. In particular, you can't interpolate outside of quotes, |
414 | so |
415 | |
416 | $var = 'myvar'; |
417 | $sym = mypack::$var; |
418 | |
419 | is not the same as |
420 | |
421 | $var = 'myvar'; |
422 | $sym = "mypack::$var"; |
423 | |
424 | =item Bad symbol for array |
425 | |
426 | (P) An internal request asked to add an array entry to something that |
427 | wasn't a symbol table entry. |
428 | |
429 | =item Bad symbol for filehandle |
430 | |
431 | (P) An internal request asked to add a filehandle entry to something that |
432 | wasn't a symbol table entry. |
433 | |
434 | =item Bad symbol for hash |
435 | |
436 | (P) An internal request asked to add a hash entry to something that |
437 | wasn't a symbol table entry. |
438 | |
8b1a09fc |
439 | =item Badly placed ()'s |
cb1a09d0 |
440 | |
441 | (A) You've accidentally run your script through B<csh> instead |
3a52c276 |
442 | of Perl. Check the #! line, or manually feed your script into |
443 | Perl yourself. |
cb1a09d0 |
444 | |
3fe9a6f1 |
445 | =item Bareword "%s" not allowed while "strict subs" in use |
446 | |
447 | (F) With "strict subs" in use, a bareword is only allowed as a |
d98d5fff |
448 | subroutine identifier, in curly brackets or to the left of the "=>" symbol. |
54310121 |
449 | Perhaps you need to predeclare a subroutine? |
3fe9a6f1 |
450 | |
c3e0f903 |
451 | =item Bareword "%s" refers to nonexistent package |
452 | |
453 | (W) You used a qualified bareword of the form C<Foo::>, but |
454 | the compiler saw no other uses of that namespace before that point. |
455 | Perhaps you need to predeclare a package? |
456 | |
a0d0e21e |
457 | =item BEGIN failed--compilation aborted |
458 | |
459 | (F) An untrapped exception was raised while executing a BEGIN subroutine. |
460 | Compilation stops immediately and the interpreter is exited. |
461 | |
68dc0745 |
462 | =item BEGIN not safe after errors--compilation aborted |
463 | |
464 | (F) Perl found a C<BEGIN {}> subroutine (or a C<use> directive, which |
465 | implies a C<BEGIN {}>) after one or more compilation errors had |
466 | already occurred. Since the intended environment for the C<BEGIN {}> |
467 | could not be guaranteed (due to the errors), and since subsequent code |
468 | likely depends on its correct operation, Perl just gave up. |
469 | |
a0d0e21e |
470 | =item bind() on closed fd |
471 | |
472 | (W) You tried to do a bind on a closed socket. Did you forget to check |
473 | the return value of your socket() call? See L<perlfunc/bind>. |
474 | |
4633a7c4 |
475 | =item Bizarre copy of %s in %s |
476 | |
477 | (P) Perl detected an attempt to copy an internal value that is not copiable. |
478 | |
f675dbe5 |
479 | =item Buffer overflow in prime_env_iter: %s |
480 | |
481 | (W) A warning peculiar to VMS. While Perl was preparing to iterate over |
482 | %ENV, it encountered a logical name or symbol definition which was too long, |
483 | so it was truncated to the string shown. |
484 | |
a0d0e21e |
485 | =item Callback called exit |
486 | |
487 | (F) A subroutine invoked from an external package via perl_call_sv() |
488 | exited by calling exit. |
489 | |
0a753a76 |
490 | =item Can't "goto" outside a block |
491 | |
492 | (F) A "goto" statement was executed to jump out of what might look |
493 | like a block, except that it isn't a proper block. This usually |
494 | occurs if you tried to jump out of a sort() block or subroutine, which |
495 | is a no-no. See L<perlfunc/goto>. |
496 | |
84902520 |
497 | =item Can't "goto" into the middle of a foreach loop |
498 | |
499 | (F) A "goto" statement was executed to jump into the middle of a |
500 | foreach loop. You can't get there from here. See L<perlfunc/goto>. |
501 | |
a0d0e21e |
502 | =item Can't "last" outside a block |
503 | |
504 | (F) A "last" statement was executed to break out of the current block, |
505 | except that there's this itty bitty problem called there isn't a |
506 | current block. Note that an "if" or "else" block doesn't count as a |
0a753a76 |
507 | "loopish" block, as doesn't a block given to sort(). You can usually double |
508 | the curlies to get the same effect though, because the inner curlies |
509 | will be considered a block that loops once. See L<perlfunc/last>. |
a0d0e21e |
510 | |
511 | =item Can't "next" outside a block |
512 | |
513 | (F) A "next" statement was executed to reiterate the current block, but |
514 | there isn't a current block. Note that an "if" or "else" block doesn't |
0a753a76 |
515 | count as a "loopish" block, as doesn't a block given to sort(). You can |
516 | usually double the curlies to get the same effect though, because the inner |
54310121 |
517 | curlies will be considered a block that loops once. See L<perlfunc/next>. |
a0d0e21e |
518 | |
f675dbe5 |
519 | =item Can't read CRTL environ |
520 | |
521 | (S) A warning peculiar to VMS. Perl tried to read an element of %ENV |
522 | from the CRTL's internal environment array and discovered the array was |
523 | missing. You need to figure out where your CRTL misplaced its environ |
524 | or define F<PERL_ENV_TABLES> (see L<perlvms>) so that environ is not searched. |
525 | |
a0d0e21e |
526 | =item Can't "redo" outside a block |
527 | |
528 | (F) A "redo" statement was executed to restart the current block, but |
529 | there isn't a current block. Note that an "if" or "else" block doesn't |
0a753a76 |
530 | count as a "loopish" block, as doesn't a block given to sort(). You can |
531 | usually double the curlies to get the same effect though, because the inner |
54310121 |
532 | curlies will be considered a block that loops once. See L<perlfunc/redo>. |
a0d0e21e |
533 | |
534 | =item Can't bless non-reference value |
535 | |
536 | (F) Only hard references may be blessed. This is how Perl "enforces" |
537 | encapsulation of objects. See L<perlobj>. |
538 | |
539 | =item Can't break at that line |
540 | |
54310121 |
541 | (S) A warning intended to only be printed while running within the debugger, indicating |
a0d0e21e |
542 | the line number specified wasn't the location of a statement that could |
543 | be stopped at. |
544 | |
545 | =item Can't call method "%s" in empty package "%s" |
546 | |
547 | (F) You called a method correctly, and it correctly indicated a package |
548 | functioning as a class, but that package doesn't have ANYTHING defined |
549 | in it, let alone methods. See L<perlobj>. |
550 | |
551 | =item Can't call method "%s" on unblessed reference |
552 | |
54310121 |
553 | (F) A method call must know in what package it's supposed to run. It |
a0d0e21e |
554 | ordinarily finds this out from the object reference you supply, but |
555 | you didn't supply an object reference in this case. A reference isn't |
556 | an object reference until it has been blessed. See L<perlobj>. |
557 | |
558 | =item Can't call method "%s" without a package or object reference |
559 | |
560 | (F) You used the syntax of a method call, but the slot filled by the |
561 | object reference or package name contains an expression that returns |
72b5445b |
562 | a defined value which is neither an object reference nor a package name. |
563 | Something like this will reproduce the error: |
564 | |
565 | $BADREF = 42; |
566 | process $BADREF 1,2,3; |
567 | $BADREF->process(1,2,3); |
568 | |
569 | =item Can't call method "%s" on an undefined value |
570 | |
571 | (F) You used the syntax of a method call, but the slot filled by the |
572 | object reference or package name contains an undefined value. |
a0d0e21e |
573 | Something like this will reproduce the error: |
574 | |
575 | $BADREF = undef; |
576 | process $BADREF 1,2,3; |
577 | $BADREF->process(1,2,3); |
578 | |
579 | =item Can't chdir to %s |
580 | |
581 | (F) You called C<perl -x/foo/bar>, but C</foo/bar> is not a directory |
582 | that you can chdir to, possibly because it doesn't exist. |
583 | |
104d25b7 |
584 | =item Can't check filesystem of script "%s" |
585 | |
586 | (P) For some reason you can't check the filesystem of the script for nosuid. |
587 | |
a0d0e21e |
588 | =item Can't coerce %s to integer in %s |
589 | |
590 | (F) Certain types of SVs, in particular real symbol table entries |
55497cff |
591 | (typeglobs), can't be forced to stop being what they are. So you can't |
a0d0e21e |
592 | say things like: |
593 | |
594 | *foo += 1; |
595 | |
596 | You CAN say |
597 | |
598 | $foo = *foo; |
599 | $foo += 1; |
600 | |
601 | but then $foo no longer contains a glob. |
602 | |
603 | =item Can't coerce %s to number in %s |
604 | |
605 | (F) Certain types of SVs, in particular real symbol table entries |
55497cff |
606 | (typeglobs), can't be forced to stop being what they are. |
a0d0e21e |
607 | |
608 | =item Can't coerce %s to string in %s |
609 | |
610 | (F) Certain types of SVs, in particular real symbol table entries |
55497cff |
611 | (typeglobs), can't be forced to stop being what they are. |
a0d0e21e |
612 | |
57079c46 |
613 | =item Can't coerce array into hash |
614 | |
615 | (F) You used an array where a hash was expected, but the array has no |
616 | information on how to map from keys to array indices. You can do that |
617 | only with arrays that have a hash reference at index 0. |
618 | |
a0d0e21e |
619 | =item Can't create pipe mailbox |
620 | |
748a9306 |
621 | (P) An error peculiar to VMS. The process is suffering from exhausted quotas |
622 | or other plumbing problems. |
a0d0e21e |
623 | |
624 | =item Can't declare %s in my |
625 | |
5f05dabc |
626 | (F) Only scalar, array, and hash variables may be declared as lexical variables. |
a0d0e21e |
627 | They must have ordinary identifiers as names. |
628 | |
629 | =item Can't do inplace edit on %s: %s |
630 | |
631 | (S) The creation of the new file failed for the indicated reason. |
632 | |
54310121 |
633 | =item Can't do inplace edit without backup |
a0d0e21e |
634 | |
54310121 |
635 | (F) You're on a system such as MS-DOS that gets confused if you try reading |
3fe9a6f1 |
636 | from a deleted (but still opened) file. You have to say C<-i.bak>, or some |
a0d0e21e |
637 | such. |
638 | |
8b1a09fc |
639 | =item Can't do inplace edit: %s E<gt> 14 characters |
a0d0e21e |
640 | |
641 | (S) There isn't enough room in the filename to make a backup name for the file. |
642 | |
643 | =item Can't do inplace edit: %s is not a regular file |
644 | |
645 | (S) You tried to use the B<-i> switch on a special file, such as a file in |
646 | /dev, or a FIFO. The file was ignored. |
647 | |
648 | =item Can't do setegid! |
649 | |
650 | (P) The setegid() call failed for some reason in the setuid emulator |
651 | of suidperl. |
652 | |
653 | =item Can't do seteuid! |
654 | |
655 | (P) The setuid emulator of suidperl failed for some reason. |
656 | |
657 | =item Can't do setuid |
658 | |
659 | (F) This typically means that ordinary perl tried to exec suidperl to |
660 | do setuid emulation, but couldn't exec it. It looks for a name of the |
661 | form sperl5.000 in the same directory that the perl executable resides |
662 | under the name perl5.000, typically /usr/local/bin on Unix machines. |
663 | If the file is there, check the execute permissions. If it isn't, ask |
664 | your sysadmin why he and/or she removed it. |
665 | |
666 | =item Can't do waitpid with flags |
667 | |
668 | (F) This machine doesn't have either waitpid() or wait4(), so only waitpid() |
669 | without flags is emulated. |
670 | |
8b1a09fc |
671 | =item Can't do {n,m} with n E<gt> m |
a0d0e21e |
672 | |
673 | (F) Minima must be less than or equal to maxima. If you really want |
674 | your regexp to match something 0 times, just put {0}. See L<perlre>. |
675 | |
676 | =item Can't emulate -%s on #! line |
677 | |
678 | (F) The #! line specifies a switch that doesn't make sense at this point. |
679 | For example, it'd be kind of silly to put a B<-x> on the #! line. |
680 | |
681 | =item Can't exec "%s": %s |
682 | |
5f05dabc |
683 | (W) An system(), exec(), or piped open call could not execute the named |
a0d0e21e |
684 | program for the indicated reason. Typical reasons include: the permissions |
685 | were wrong on the file, the file wasn't found in C<$ENV{PATH}>, the |
686 | executable in question was compiled for another architecture, or the |
687 | #! line in a script points to an interpreter that can't be run for |
688 | similar reasons. (Or maybe your system doesn't support #! at all.) |
689 | |
690 | =item Can't exec %s |
691 | |
692 | (F) Perl was trying to execute the indicated program for you because that's |
693 | what the #! line said. If that's not what you wanted, you may need to |
694 | mention "perl" on the #! line somewhere. |
695 | |
696 | =item Can't execute %s |
697 | |
2a92aaa0 |
698 | (F) You used the B<-S> switch, but the copies of the script to execute found |
699 | in the PATH did not have correct permissions. |
700 | |
701 | =item Can't find %s on PATH, '.' not in PATH |
702 | |
703 | (F) You used the B<-S> switch, but the script to execute could not be found |
704 | in the PATH, or at least not with the correct permissions. The script |
705 | exists in the current directory, but PATH prohibits running it. |
706 | |
707 | =item Can't find %s on PATH |
708 | |
a0d0e21e |
709 | (F) You used the B<-S> switch, but the script to execute could not be found |
2a92aaa0 |
710 | in the PATH. |
a0d0e21e |
711 | |
712 | =item Can't find label %s |
713 | |
714 | (F) You said to goto a label that isn't mentioned anywhere that it's possible |
715 | for us to go to. See L<perlfunc/goto>. |
716 | |
717 | =item Can't find string terminator %s anywhere before EOF |
718 | |
719 | (F) Perl strings can stretch over multiple lines. This message means that |
5f05dabc |
720 | the closing delimiter was omitted. Because bracketed quotes count nesting |
a0d0e21e |
721 | levels, the following is missing its final parenthesis: |
722 | |
fb73857a |
723 | print q(The character '(' starts a side comment.); |
724 | |
725 | If you're getting this error from a here-document, you may have |
726 | included unseen whitespace before or after your closing tag. A good |
727 | programmer's editor will have a way to help you find these characters. |
a0d0e21e |
728 | |
729 | =item Can't fork |
730 | |
731 | (F) A fatal error occurred while trying to fork while opening a pipeline. |
732 | |
748a9306 |
733 | =item Can't get filespec - stale stat buffer? |
734 | |
735 | (S) A warning peculiar to VMS. This arises because of the difference between |
736 | access checks under VMS and under the Unix model Perl assumes. Under VMS, |
737 | access checks are done by filename, rather than by bits in the stat buffer, so |
738 | that ACLs and other protections can be taken into account. Unfortunately, Perl |
739 | assumes that the stat buffer contains all the necessary information, and passes |
740 | it, instead of the filespec, to the access checking routine. It will try to |
741 | retrieve the filespec using the device name and FID present in the stat buffer, |
742 | but this works only if you haven't made a subsequent call to the CRTL stat() |
5f05dabc |
743 | routine, because the device name is overwritten with each call. If this warning |
748a9306 |
744 | appears, the name lookup failed, and the access checking routine gave up and |
745 | returned FALSE, just to be conservative. (Note: The access checking routine |
746 | knows about the Perl C<stat> operator and file tests, so you shouldn't ever |
747 | see this warning in response to a Perl command; it arises only if some internal |
748 | code takes stat buffers lightly.) |
749 | |
a0d0e21e |
750 | =item Can't get pipe mailbox device name |
751 | |
748a9306 |
752 | (P) An error peculiar to VMS. After creating a mailbox to act as a pipe, Perl |
753 | can't retrieve its name for later use. |
a0d0e21e |
754 | |
755 | =item Can't get SYSGEN parameter value for MAXBUF |
756 | |
748a9306 |
757 | (P) An error peculiar to VMS. Perl asked $GETSYI how big you want your |
758 | mailbox buffers to be, and didn't get an answer. |
a0d0e21e |
759 | |
760 | =item Can't goto subroutine outside a subroutine |
761 | |
762 | (F) The deeply magical "goto subroutine" call can only replace one subroutine |
763 | call for another. It can't manufacture one out of whole cloth. In general |
5f05dabc |
764 | you should be calling it out of only an AUTOLOAD routine anyway. See |
a0d0e21e |
765 | L<perlfunc/goto>. |
766 | |
b150fb22 |
767 | =item Can't goto subroutine from an eval-string |
768 | |
769 | (F) The "goto subroutine" call can't be used to jump out of an eval "string". |
770 | (You can use it to jump out of an eval {BLOCK}, but you probably don't want to.) |
771 | |
706a304b |
772 | =item Can't localize through a reference |
4633a7c4 |
773 | |
706a304b |
774 | (F) You said something like C<local $$ref>, which Perl can't currently |
775 | handle, because when it goes to restore the old value of whatever $ref |
776 | pointed to after the scope of the local() is finished, it can't be |
777 | sure that $ref will still be a reference. |
4633a7c4 |
778 | |
748a9306 |
779 | =item Can't localize lexical variable %s |
780 | |
2ba9eb46 |
781 | (F) You used local on a variable name that was previously declared as a |
748a9306 |
782 | lexical variable using "my". This is not allowed. If you want to |
783 | localize a package variable of the same name, qualify it with the |
784 | package name. |
785 | |
0ebe0038 |
786 | =item Can't localize pseudo-hash element |
787 | |
788 | (F) You said something like C<local $ar-E<gt>{'key'}>, where $ar is |
789 | a reference to a pseudo-hash. That hasn't been implemented yet, but |
790 | you can get a similar effect by localizing the corresponding array |
791 | element directly -- C<local $ar-E<gt>[$ar-E<gt>[0]{'key'}]>. |
792 | |
4727527e |
793 | =item Can't locate auto/%s.al in @INC |
794 | |
795 | (F) A function (or method) was called in a package which allows autoload, |
796 | but there is no function to autoload. Most probable causes are a misprint |
797 | in a function/method name or a failure to C<AutoSplit> the file, say, by |
798 | doing C<make install>. |
799 | |
ec889f3a |
800 | =item Can't locate %s |
801 | |
802 | (F) You said to C<do> (or C<require>, or C<use>) a file that couldn't be |
803 | found. Perl looks for the file in all the locations mentioned in @INC, |
804 | unless the file name included the full path to the file. Perhaps you need |
805 | to set the PERL5LIB or PERL5OPT environment variable to say where the extra |
806 | library is, or maybe the script needs to add the library name to @INC. Or |
807 | maybe you just misspelled the name of the file. See L<perlfunc/require> |
808 | and L<lib>. |
a0d0e21e |
809 | |
810 | =item Can't locate object method "%s" via package "%s" |
811 | |
812 | (F) You called a method correctly, and it correctly indicated a package |
813 | functioning as a class, but that package doesn't define that particular |
2ba9eb46 |
814 | method, nor does any of its base classes. See L<perlobj>. |
a0d0e21e |
815 | |
816 | =item Can't locate package %s for @%s::ISA |
817 | |
818 | (W) The @ISA array contained the name of another package that doesn't seem |
819 | to exist. |
820 | |
3e3baf6d |
821 | =item Can't make list assignment to \%ENV on this system |
822 | |
823 | (F) List assignment to %ENV is not supported on some systems, notably VMS. |
824 | |
a0d0e21e |
825 | =item Can't modify %s in %s |
826 | |
827 | (F) You aren't allowed to assign to the item indicated, or otherwise try to |
5f05dabc |
828 | change it, such as with an auto-increment. |
a0d0e21e |
829 | |
54310121 |
830 | =item Can't modify nonexistent substring |
a0d0e21e |
831 | |
832 | (P) The internal routine that does assignment to a substr() was handed |
833 | a NULL. |
834 | |
5f05dabc |
835 | =item Can't msgrcv to read-only var |
a0d0e21e |
836 | |
5f05dabc |
837 | (F) The target of a msgrcv must be modifiable to be used as a receive |
a0d0e21e |
838 | buffer. |
839 | |
840 | =item Can't open %s: %s |
841 | |
08e9d68e |
842 | (S) The implicit opening of a file through use of the C<E<lt>E<gt>> |
843 | filehandle, either implicitly under the C<-n> or C<-p> command-line |
844 | switches, or explicitly, failed for the indicated reason. Usually this |
845 | is because you don't have read permission for a file which you named |
846 | on the command line. |
a0d0e21e |
847 | |
848 | =item Can't open bidirectional pipe |
849 | |
850 | (W) You tried to say C<open(CMD, "|cmd|")>, which is not supported. You can |
851 | try any of several modules in the Perl library to do this, such as |
7e1af8bc |
852 | IPC::Open2. Alternately, direct the pipe's output to a file using "E<gt>", |
a0d0e21e |
853 | and then read it in under a different file handle. |
854 | |
748a9306 |
855 | =item Can't open error file %s as stderr |
856 | |
857 | (F) An error peculiar to VMS. Perl does its own command line redirection, and |
8b1a09fc |
858 | couldn't open the file specified after '2E<gt>' or '2E<gt>E<gt>' on the |
859 | command line for writing. |
748a9306 |
860 | |
861 | =item Can't open input file %s as stdin |
862 | |
863 | (F) An error peculiar to VMS. Perl does its own command line redirection, and |
8b1a09fc |
864 | couldn't open the file specified after 'E<lt>' on the command line for reading. |
748a9306 |
865 | |
866 | =item Can't open output file %s as stdout |
867 | |
868 | (F) An error peculiar to VMS. Perl does its own command line redirection, and |
8b1a09fc |
869 | couldn't open the file specified after 'E<gt>' or 'E<gt>E<gt>' on the command |
870 | line for writing. |
748a9306 |
871 | |
872 | =item Can't open output pipe (name: %s) |
873 | |
874 | (P) An error peculiar to VMS. Perl does its own command line redirection, and |
875 | couldn't open the pipe into which to send data destined for stdout. |
876 | |
a0d0e21e |
877 | =item Can't open perl script "%s": %s |
878 | |
879 | (F) The script you specified can't be opened for the indicated reason. |
880 | |
7bac28a0 |
881 | =item Can't redefine active sort subroutine %s |
882 | |
883 | (F) Perl optimizes the internal handling of sort subroutines and keeps |
884 | pointers into them. You tried to redefine one such sort subroutine when it |
885 | was currently active, which is not allowed. If you really want to do |
886 | this, you should write C<sort { &func } @x> instead of C<sort func @x>. |
887 | |
a0d0e21e |
888 | =item Can't rename %s to %s: %s, skipping file |
889 | |
890 | (S) The rename done by the B<-i> switch failed for some reason, probably because |
891 | you don't have write permission to the directory. |
892 | |
748a9306 |
893 | =item Can't reopen input pipe (name: %s) in binary mode |
894 | |
895 | (P) An error peculiar to VMS. Perl thought stdin was a pipe, and tried to |
896 | reopen it to accept binary data. Alas, it failed. |
897 | |
a0d0e21e |
898 | =item Can't reswap uid and euid |
899 | |
900 | (P) The setreuid() call failed for some reason in the setuid emulator |
901 | of suidperl. |
902 | |
903 | =item Can't return outside a subroutine |
904 | |
905 | (F) The return statement was executed in mainline code, that is, where |
906 | there was no subroutine call to return out of. See L<perlsub>. |
907 | |
908 | =item Can't stat script "%s" |
909 | |
910 | (P) For some reason you can't fstat() the script even though you have |
911 | it open already. Bizarre. |
912 | |
913 | =item Can't swap uid and euid |
914 | |
915 | (P) The setreuid() call failed for some reason in the setuid emulator |
916 | of suidperl. |
917 | |
918 | =item Can't take log of %g |
919 | |
fb73857a |
920 | (F) For ordinary real numbers, you can't take the logarithm of a |
921 | negative number or zero. There's a Math::Complex package that comes |
922 | standard with Perl, though, if you really want to do that for |
923 | the negative numbers. |
a0d0e21e |
924 | |
925 | =item Can't take sqrt of %g |
926 | |
927 | (F) For ordinary real numbers, you can't take the square root of a |
fb73857a |
928 | negative number. There's a Math::Complex package that comes standard |
929 | with Perl, though, if you really want to do that. |
a0d0e21e |
930 | |
931 | =item Can't undef active subroutine |
932 | |
933 | (F) You can't undefine a routine that's currently running. You can, |
934 | however, redefine it while it's running, and you can even undef the |
935 | redefined subroutine while the old routine is running. Go figure. |
936 | |
937 | =item Can't unshift |
938 | |
939 | (F) You tried to unshift an "unreal" array that can't be unshifted, such |
940 | as the main Perl stack. |
941 | |
942 | =item Can't upgrade that kind of scalar |
943 | |
944 | (P) The internal sv_upgrade routine adds "members" to an SV, making |
945 | it into a more specialized kind of SV. The top several SV types are |
946 | so specialized, however, that they cannot be interconverted. This |
947 | message indicates that such a conversion was attempted. |
948 | |
949 | =item Can't upgrade to undef |
950 | |
951 | (P) The undefined SV is the bottom of the totem pole, in the scheme |
952 | of upgradability. Upgrading to undef indicates an error in the |
953 | code calling sv_upgrade. |
954 | |
1d2dff63 |
955 | =item Can't use %%! because Errno.pm is not available |
956 | |
957 | (F) The first time the %! hash is used, perl automatically loads the |
958 | Errno.pm module. The Errno module is expected to tie the %! hash to |
959 | provide symbolic names for C<$!> errno values. |
960 | |
c07a80fd |
961 | =item Can't use "my %s" in sort comparison |
962 | |
963 | (F) The global variables $a and $b are reserved for sort comparisons. |
8b1a09fc |
964 | You mentioned $a or $b in the same line as the E<lt>=E<gt> or cmp operator, |
c07a80fd |
965 | and the variable had earlier been declared as a lexical variable. |
966 | Either qualify the sort variable with the package name, or rename the |
967 | lexical variable. |
968 | |
e9fa98b2 |
969 | =item Bad evalled substitution pattern |
970 | |
971 | (F) You've used the /e switch to evaluate the replacement for a |
972 | substitution, but perl found a syntax error in the code to evaluate, |
973 | most likely an unexpected right brace '}'. |
974 | |
a0d0e21e |
975 | =item Can't use %s for loop variable |
976 | |
977 | (F) Only a simple scalar variable may be used as a loop variable on a foreach. |
978 | |
979 | =item Can't use %s ref as %s ref |
980 | |
981 | (F) You've mixed up your reference types. You have to dereference a |
982 | reference of the type needed. You can use the ref() function to |
983 | test the type of the reference, if need be. |
984 | |
748a9306 |
985 | =item Can't use \1 to mean $1 in expression |
986 | |
987 | (W) In an ordinary expression, backslash is a unary operator that creates |
988 | a reference to its argument. The use of backslash to indicate a backreference |
5f05dabc |
989 | to a matched substring is valid only as part of a regular expression pattern. |
748a9306 |
990 | Trying to do this in ordinary Perl code produces a value that prints |
991 | out looking like SCALAR(0xdecaf). Use the $1 form instead. |
992 | |
44a8e56a |
993 | =item Can't use bareword ("%s") as %s ref while \"strict refs\" in use |
994 | |
995 | (F) Only hard references are allowed by "strict refs". Symbolic references |
996 | are disallowed. See L<perlref>. |
997 | |
748a9306 |
998 | =item Can't use string ("%s") as %s ref while "strict refs" in use |
a0d0e21e |
999 | |
1000 | (F) Only hard references are allowed by "strict refs". Symbolic references |
1001 | are disallowed. See L<perlref>. |
1002 | |
1003 | =item Can't use an undefined value as %s reference |
1004 | |
1005 | (F) A value used as either a hard reference or a symbolic reference must |
54310121 |
1006 | be a defined value. This helps to delurk some insidious errors. |
a0d0e21e |
1007 | |
a0d0e21e |
1008 | =item Can't use global %s in "my" |
1009 | |
1010 | (F) You tried to declare a magical variable as a lexical variable. This is |
5f05dabc |
1011 | not allowed, because the magic can be tied to only one location (namely |
a0d0e21e |
1012 | the global variable) and it would be incredibly confusing to have |
1013 | variables in your program that looked like magical variables but |
1014 | weren't. |
1015 | |
748a9306 |
1016 | =item Can't use subscript on %s |
1017 | |
1018 | (F) The compiler tried to interpret a bracketed expression as a |
1019 | subscript. But to the left of the brackets was an expression that |
1020 | didn't look like an array reference, or anything else subscriptable. |
1021 | |
810b8aa5 |
1022 | =item Can't weaken a nonreference |
1023 | |
1024 | (F) You attempted to weaken something that was not a reference. Only |
1025 | references can be weakened. |
1026 | |
5f05dabc |
1027 | =item Can't x= to read-only value |
a0d0e21e |
1028 | |
1029 | (F) You tried to repeat a constant value (often the undefined value) with |
1030 | an assignment operator, which implies modifying the value itself. |
1031 | Perhaps you need to copy the value to a temporary, and repeat that. |
1032 | |
3f4520fe |
1033 | =item Can't find an opnumber for "%s" |
b6c543e3 |
1034 | |
1035 | (F) A string of a form C<CORE::word> was given to prototype(), but |
1036 | there is no builtin with the name C<word>. |
1037 | |
3f4520fe |
1038 | =item Can't resolve method `%s' overloading `%s' in package `%s' |
e7ea3e70 |
1039 | |
1040 | (F|P) Error resolving overloading specified by a method name (as |
1041 | opposed to a subroutine reference): no such method callable via the |
1042 | package. If method name is C<???>, this is an internal error. |
1043 | |
b8c5462f |
1044 | =item Character class [:%s:] unknown |
4599a1de |
1045 | |
b8c5462f |
1046 | (F) The class in the character class [: :] syntax is unknown. |
4599a1de |
1047 | |
b8c5462f |
1048 | =item Character class syntax [%s] belongs inside character classes |
1049 | |
1050 | (W) The character class constructs [: :], [= =], and [. .] go |
644a2880 |
1051 | I<inside> character classes, the [] are part of the construct, |
1052 | for example: /[012[:alpha:]345]/. Note that the last two constructs |
1053 | are not currently implemented, they are placeholders for future extensions. |
b8c5462f |
1054 | |
644a2880 |
1055 | =item Character class syntax [. .] is reserved for future extensions |
4599a1de |
1056 | |
1057 | (W) Within regular expression character classes ([]) the syntax beginning |
b8c5462f |
1058 | with "[." and ending with ".]" is reserved for future extensions. |
4599a1de |
1059 | If you need to represent those character sequences inside a regular |
1060 | expression character class, just quote the square brackets with the |
b8c5462f |
1061 | backslash: "\[." and ".\]". |
4599a1de |
1062 | |
1063 | =item Character class syntax [= =] is reserved for future extensions |
1064 | |
1065 | (W) Within regular expression character classes ([]) the syntax |
1066 | beginning with "[=" and ending with "=]" is reserved for future extensions. |
1067 | If you need to represent those character sequences inside a regular |
1068 | expression character class, just quote the square brackets with the |
1069 | backslash: "\[=" and "=\]". |
1070 | |
a0d0e21e |
1071 | =item chmod: mode argument is missing initial 0 |
1072 | |
1073 | (W) A novice will sometimes say |
1074 | |
1075 | chmod 777, $filename |
1076 | |
1077 | not realizing that 777 will be interpreted as a decimal number, equivalent |
1078 | to 01411. Octal constants are introduced with a leading 0 in Perl, as in C. |
1079 | |
8b1a09fc |
1080 | =item Close on unopened file E<lt>%sE<gt> |
a0d0e21e |
1081 | |
1082 | (W) You tried to close a filehandle that was never opened. |
1083 | |
7a2e2cd6 |
1084 | =item Compilation failed in require |
1085 | |
1086 | (F) Perl could not compile a file specified in a C<require> statement. |
1087 | Perl uses this generic message when none of the errors that it encountered |
1088 | were severe enough to halt compilation immediately. |
1089 | |
c3464db5 |
1090 | =item Complex regular subexpression recursion limit (%d) exceeded |
1091 | |
1092 | (W) The regular expression engine uses recursion in complex situations |
1093 | where back-tracking is required. Recursion depth is limited to 32766, |
1094 | or perhaps less in architectures where the stack cannot grow |
1095 | arbitrarily. ("Simple" and "medium" situations are handled without |
1096 | recursion and are not subject to a limit.) Try shortening the string |
1097 | under examination; looping in Perl code (e.g. with C<while>) rather |
1098 | than in the regular expression engine; or rewriting the regular |
1099 | expression so that it is simpler or backtracks less. (See L<perlbook> |
1100 | for information on I<Mastering Regular Expressions>.) |
1101 | |
a0d0e21e |
1102 | =item connect() on closed fd |
1103 | |
1104 | (W) You tried to do a connect on a closed socket. Did you forget to check |
1105 | the return value of your socket() call? See L<perlfunc/connect>. |
1106 | |
779c5bc9 |
1107 | =item Constant is not %s reference |
1108 | |
1109 | (F) A constant value (perhaps declared using the C<use constant> pragma) |
1110 | is being dereferenced, but it amounts to the wrong type of reference. The |
1111 | message indicates the type of reference that was expected. This usually |
1112 | indicates a syntax error in dereferencing the constant value. |
1113 | See L<perlsub/"Constant Functions"> and L<constant>. |
1114 | |
4cee8e80 |
1115 | =item Constant subroutine %s redefined |
1116 | |
1117 | (S) You redefined a subroutine which had previously been eligible for |
1118 | inlining. See L<perlsub/"Constant Functions"> for commentary and |
1119 | workarounds. |
1120 | |
9607fc9c |
1121 | =item Constant subroutine %s undefined |
1122 | |
1123 | (S) You undefined a subroutine which had previously been eligible for |
1124 | inlining. See L<perlsub/"Constant Functions"> for commentary and |
1125 | workarounds. |
1126 | |
e7ea3e70 |
1127 | =item Copy method did not return a reference |
1128 | |
1129 | (F) The method which overloads "=" is buggy. See L<overload/Copy Constructor>. |
1130 | |
a0d0e21e |
1131 | =item Corrupt malloc ptr 0x%lx at 0x%lx |
1132 | |
1133 | (P) The malloc package that comes with Perl had an internal failure. |
1134 | |
1135 | =item corrupted regexp pointers |
1136 | |
1137 | (P) The regular expression engine got confused by what the regular |
1138 | expression compiler gave it. |
1139 | |
1140 | =item corrupted regexp program |
1141 | |
1142 | (P) The regular expression engine got passed a regexp program without |
1143 | a valid magic number. |
1144 | |
1145 | =item Deep recursion on subroutine "%s" |
1146 | |
1147 | (W) This subroutine has called itself (directly or indirectly) 100 |
3e3baf6d |
1148 | times more than it has returned. This probably indicates an infinite |
a0d0e21e |
1149 | recursion, unless you're writing strange benchmark programs, in which |
1150 | case it indicates something else. |
1151 | |
f10b0346 |
1152 | =item defined(@array) is deprecated |
69794302 |
1153 | |
1154 | (D) defined() is not usually useful on arrays because it checks for an |
1155 | undefined I<scalar> value. If you want to see if the array is empty, |
1156 | just use C<if (@array) { # not empty }> for example. |
1157 | |
f10b0346 |
1158 | =item defined(%hash) is deprecated |
69794302 |
1159 | |
1160 | (D) defined() is not usually useful on hashes because it checks for an |
1161 | undefined I<scalar> value. If you want to see if the hash is empty, |
1162 | just use C<if (%hash) { # not empty }> for example. |
1163 | |
fc36a67e |
1164 | =item Delimiter for here document is too long |
1165 | |
1166 | (F) In a here document construct like C<E<lt>E<lt>FOO>, the label |
1167 | C<FOO> is too long for Perl to handle. You have to be seriously |
1168 | twisted to write code that triggers this error. |
1169 | |
4633a7c4 |
1170 | =item Did you mean &%s instead? |
1171 | |
1172 | (W) You probably referred to an imported subroutine &FOO as $FOO or some such. |
1173 | |
748a9306 |
1174 | =item Did you mean $ or @ instead of %? |
a0d0e21e |
1175 | |
748a9306 |
1176 | (W) You probably said %hash{$key} when you meant $hash{$key} or @hash{@keys}. |
1177 | On the other hand, maybe you just meant %hash and got carried away. |
1178 | |
7e1af8bc |
1179 | =item Died |
5f05dabc |
1180 | |
1181 | (F) You passed die() an empty string (the equivalent of C<die "">) or |
1182 | you called it with no args and both C<$@> and C<$_> were empty. |
1183 | |
54310121 |
1184 | =item Do you need to predeclare %s? |
748a9306 |
1185 | |
1186 | (S) This is an educated guess made in conjunction with the message "%s |
1187 | found where operator expected". It often means a subroutine or module |
1188 | name is being referenced that hasn't been declared yet. This may be |
1189 | because of ordering problems in your file, or because of a missing |
1190 | "sub", "package", "require", or "use" statement. If you're |
1191 | referencing something that isn't defined yet, you don't actually have |
1192 | to define the subroutine or package before the current location. You |
1193 | can use an empty "sub foo;" or "package FOO;" to enter a "forward" |
1194 | declaration. |
a0d0e21e |
1195 | |
1196 | =item Don't know how to handle magic of type '%s' |
1197 | |
1198 | (P) The internal handling of magical variables has been cursed. |
1199 | |
1200 | =item do_study: out of memory |
1201 | |
1202 | (P) This should have been caught by safemalloc() instead. |
1203 | |
1204 | =item Duplicate free() ignored |
1205 | |
1206 | (S) An internal routine called free() on something that had already |
1207 | been freed. |
1208 | |
4633a7c4 |
1209 | =item elseif should be elsif |
1210 | |
1211 | (S) There is no keyword "elseif" in Perl because Larry thinks it's |
1212 | ugly. Your code will be interpreted as an attempt to call a method |
1213 | named "elseif" for the class returned by the following block. This is |
1214 | unlikely to be what you want. |
1215 | |
a0d0e21e |
1216 | =item END failed--cleanup aborted |
1217 | |
1218 | (F) An untrapped exception was raised while executing an END subroutine. |
1219 | The interpreter is immediately exited. |
1220 | |
85ab1d1d |
1221 | =item entering effective %s failed |
5ff3f7a4 |
1222 | |
85ab1d1d |
1223 | (F) While under the C<use filetest> pragma, switching the real and |
5ff3f7a4 |
1224 | effective uids or gids failed. |
1225 | |
748a9306 |
1226 | =item Error converting file specification %s |
1227 | |
5f05dabc |
1228 | (F) An error peculiar to VMS. Because Perl may have to deal with file |
748a9306 |
1229 | specifications in either VMS or Unix syntax, it converts them to a |
1230 | single form when it must operate on them directly. Either you've |
1231 | passed an invalid file specification to Perl, or you've found a |
1232 | case the conversion routines don't handle. Drat. |
1233 | |
e4d48cc9 |
1234 | =item %s: Eval-group in insecure regular expression |
1235 | |
1236 | (F) Perl detected tainted data when trying to compile a regular expression |
1237 | that contains the C<(?{ ... })> zero-width assertion, which is unsafe. |
1238 | See L<perlre/(?{ code })>, and L<perlsec>. |
1239 | |
1240 | =item %s: Eval-group not allowed, use re 'eval' |
1241 | |
1242 | (F) A regular expression contained the C<(?{ ... })> zero-width assertion, |
1243 | but that construct is only allowed when the C<use re 'eval'> pragma is |
1244 | in effect. See L<perlre/(?{ code })>. |
1245 | |
1246 | =item %s: Eval-group not allowed at run time |
1247 | |
1248 | (F) Perl tried to compile a regular expression containing the C<(?{ ... })> |
3c247ff3 |
1249 | zero-width assertion at run time, as it would when the pattern contains |
1250 | interpolated values. Since that is a security risk, it is not allowed. |
e4d48cc9 |
1251 | If you insist, you may still do this by explicitly building the pattern |
1252 | from an interpolated string at run time and using that in an eval(). |
1253 | See L<perlre/(?{ code })>. |
1254 | |
fc36a67e |
1255 | =item Excessively long <> operator |
1256 | |
1257 | (F) The contents of a <> operator may not exceed the maximum size of a |
1258 | Perl identifier. If you're just trying to glob a long list of |
1259 | filenames, try using the glob() operator, or put the filenames into a |
1260 | variable and glob that. |
1261 | |
f86702cc |
1262 | =item Execution of %s aborted due to compilation errors |
a0d0e21e |
1263 | |
1264 | (F) The final summary message when a Perl compilation fails. |
1265 | |
1266 | =item Exiting eval via %s |
1267 | |
8b1a09fc |
1268 | (W) You are exiting an eval by unconventional means, such as |
a0d0e21e |
1269 | a goto, or a loop control statement. |
1270 | |
0a753a76 |
1271 | =item Exiting pseudo-block via %s |
1272 | |
1273 | (W) You are exiting a rather special block construct (like a sort block or |
1274 | subroutine) by unconventional means, such as a goto, or a loop control |
1275 | statement. See L<perlfunc/sort>. |
1276 | |
a0d0e21e |
1277 | =item Exiting subroutine via %s |
1278 | |
8b1a09fc |
1279 | (W) You are exiting a subroutine by unconventional means, such as |
a0d0e21e |
1280 | a goto, or a loop control statement. |
1281 | |
1282 | =item Exiting substitution via %s |
1283 | |
8b1a09fc |
1284 | (W) You are exiting a substitution by unconventional means, such as |
a0d0e21e |
1285 | a return, a goto, or a loop control statement. |
1286 | |
7b8d334a |
1287 | =item Explicit blessing to '' (assuming package main) |
1288 | |
1289 | (W) You are blessing a reference to a zero length string. This has |
1290 | the effect of blessing the reference into the package main. This is |
1291 | usually not what you want. Consider providing a default target |
ae6c4aac |
1292 | package, e.g. bless($ref, $p || 'MyPackage'); |
7b8d334a |
1293 | |
748a9306 |
1294 | =item Fatal VMS error at %s, line %d |
a0d0e21e |
1295 | |
748a9306 |
1296 | (P) An error peculiar to VMS. Something untoward happened in a VMS system |
1297 | service or RTL routine; Perl's exit status should provide more details. The |
1298 | filename in "at %s" and the line number in "line %d" tell you which section of |
1299 | the Perl source code is distressed. |
a0d0e21e |
1300 | |
1301 | =item fcntl is not implemented |
1302 | |
1303 | (F) Your machine apparently doesn't implement fcntl(). What is this, a |
1304 | PDP-11 or something? |
1305 | |
1306 | =item Filehandle %s never opened |
1307 | |
1308 | (W) An I/O operation was attempted on a filehandle that was never initialized. |
1309 | You need to do an open() or a socket() call, or call a constructor from |
1310 | the FileHandle package. |
1311 | |
af8c498a |
1312 | =item Filehandle %s opened only for input |
a0d0e21e |
1313 | |
1314 | (W) You tried to write on a read-only filehandle. If you |
1315 | intended it to be a read-write filehandle, you needed to open it with |
8b1a09fc |
1316 | "+E<lt>" or "+E<gt>" or "+E<gt>E<gt>" instead of with "E<lt>" or nothing. If |
5f05dabc |
1317 | you intended only to write the file, use "E<gt>" or "E<gt>E<gt>". See |
8b1a09fc |
1318 | L<perlfunc/open>. |
a0d0e21e |
1319 | |
af8c498a |
1320 | =item Filehandle %s opened only for output |
a0d0e21e |
1321 | |
af8c498a |
1322 | (W) You tried to read from a filehandle opened only for writing. If you |
a0d0e21e |
1323 | intended it to be a read-write filehandle, you needed to open it with |
8b1a09fc |
1324 | "+E<lt>" or "+E<gt>" or "+E<gt>E<gt>" instead of with "E<lt>" or nothing. If |
af8c498a |
1325 | you intended only to read from the file, use "E<lt>". See |
8b1a09fc |
1326 | L<perlfunc/open>. |
a0d0e21e |
1327 | |
1328 | =item Final $ should be \$ or $name |
1329 | |
1330 | (F) You must now decide whether the final $ in a string was meant to be |
1331 | a literal dollar sign, or was meant to introduce a variable name |
1332 | that happens to be missing. So you have to put either the backslash or |
1333 | the name. |
1334 | |
1335 | =item Final @ should be \@ or @name |
1336 | |
1337 | (F) You must now decide whether the final @ in a string was meant to be |
1338 | a literal "at" sign, or was meant to introduce a variable name |
1339 | that happens to be missing. So you have to put either the backslash or |
1340 | the name. |
1341 | |
1342 | =item Format %s redefined |
1343 | |
1344 | (W) You redefined a format. To suppress this warning, say |
1345 | |
1346 | { |
0453d815 |
1347 | no warning; |
a0d0e21e |
1348 | eval "format NAME =..."; |
1349 | } |
1350 | |
1351 | =item Format not terminated |
1352 | |
1353 | (F) A format must be terminated by a line with a solitary dot. Perl got |
1354 | to the end of your file without finding such a line. |
1355 | |
1356 | =item Found = in conditional, should be == |
1357 | |
1358 | (W) You said |
1359 | |
1360 | if ($foo = 123) |
1361 | |
1362 | when you meant |
1363 | |
1364 | if ($foo == 123) |
1365 | |
1366 | (or something like that). |
1367 | |
1368 | =item gdbm store returned %d, errno %d, key "%s" |
1369 | |
1370 | (S) A warning from the GDBM_File extension that a store failed. |
1371 | |
1372 | =item gethostent not implemented |
1373 | |
1374 | (F) Your C library apparently doesn't implement gethostent(), probably |
1375 | because if it did, it'd feel morally obligated to return every hostname |
1376 | on the Internet. |
1377 | |
1378 | =item get{sock,peer}name() on closed fd |
1379 | |
1380 | (W) You tried to get a socket or peer socket name on a closed socket. |
1381 | Did you forget to check the return value of your socket() call? |
1382 | |
748a9306 |
1383 | =item getpwnam returned invalid UIC %#o for user "%s" |
1384 | |
1385 | (S) A warning peculiar to VMS. The call to C<sys$getuai> underlying the |
1386 | C<getpwnam> operator returned an invalid UIC. |
1387 | |
a0d0e21e |
1388 | =item Glob not terminated |
1389 | |
1390 | (F) The lexer saw a left angle bracket in a place where it was expecting |
1391 | a term, so it's looking for the corresponding right angle bracket, and not |
1392 | finding it. Chances are you left some needed parentheses out earlier in |
1393 | the line, and you really meant a "less than". |
1394 | |
1395 | =item Global symbol "%s" requires explicit package name |
1396 | |
68dc0745 |
1397 | (F) You've said "use strict vars", which indicates that all variables |
1398 | must either be lexically scoped (using "my"), or explicitly qualified to |
a0d0e21e |
1399 | say which package the global variable is in (using "::"). |
1400 | |
1401 | =item goto must have label |
1402 | |
1403 | (F) Unlike with "next" or "last", you're not allowed to goto an |
1404 | unspecified destination. See L<perlfunc/goto>. |
1405 | |
1406 | =item Had to create %s unexpectedly |
1407 | |
1408 | (S) A routine asked for a symbol from a symbol table that ought to have |
1409 | existed already, but for some reason it didn't, and had to be created on |
1410 | an emergency basis to prevent a core dump. |
1411 | |
1412 | =item Hash %%s missing the % in argument %d of %s() |
1413 | |
1414 | (D) Really old Perl let you omit the % on hash names in some spots. This |
1415 | is now heavily deprecated. |
1416 | |
8903cb82 |
1417 | =item Identifier too long |
1418 | |
1419 | (F) Perl limits identifiers (names for variables, functions, etc.) to |
fc36a67e |
1420 | about 250 characters for simple names, and somewhat more for compound |
1421 | names (like C<$A::B>). You've exceeded Perl's limits. Future |
1422 | versions of Perl are likely to eliminate these arbitrary limitations. |
8903cb82 |
1423 | |
f675dbe5 |
1424 | =item Ill-formed CRTL environ value "%s" |
1425 | |
1426 | (W) A warning peculiar to VMS. Perl tried to read the CRTL's internal |
1427 | environ array, and encountered an element without the C<=> delimiter |
1428 | used to spearate keys from values. The element is ignored. |
1429 | |
1430 | =item Ill-formed message in prime_env_iter: |%s| |
a0d0e21e |
1431 | |
f675dbe5 |
1432 | (W) A warning peculiar to VMS. Perl tried to read a logical name |
1433 | or CLI symbol definition when preparing to iterate over %ENV, and |
1434 | didn't see the expected delimiter between key and value, so the |
1435 | line was ignored. |
a0d0e21e |
1436 | |
4fdae800 |
1437 | =item Illegal character %s (carriage return) |
1438 | |
1439 | (F) A carriage return character was found in the input. This is an |
1440 | error, and not a warning, because carriage return characters can break |
54310121 |
1441 | multi-line strings, including here documents (e.g., C<print E<lt>E<lt>EOF;>). |
1442 | |
1443 | Under Unix, this error is usually caused by executing Perl code -- |
68dc0745 |
1444 | either the main program, a module, or an eval'd string -- that was |
54310121 |
1445 | transferred over a network connection from a non-Unix system without |
68dc0745 |
1446 | properly converting the text file format. |
1447 | |
1448 | Under systems that use something other than '\n' to delimit lines of |
1449 | text, this error can also be caused by reading Perl code from a file |
1450 | handle that is in binary mode (as set by the C<binmode> operator). |
1451 | |
1452 | In either case, the Perl code in question will probably need to be |
1453 | converted with something like C<s/\x0D\x0A?/\n/g> before it can be |
1454 | executed. |
4fdae800 |
1455 | |
a0d0e21e |
1456 | =item Illegal division by zero |
1457 | |
1458 | (F) You tried to divide a number by 0. Either something was wrong in your |
1459 | logic, or you need to put a conditional in to guard against meaningless input. |
1460 | |
1461 | =item Illegal modulus zero |
1462 | |
1463 | (F) You tried to divide a number by 0 to get the remainder. Most numbers |
1464 | don't take to this kindly. |
1465 | |
399388f4 |
1466 | =item Illegal binary digit %s |
1467 | |
1468 | (F) You used a digit other than 0 and 1 in a binary number. |
1469 | |
1470 | =item Illegal octal digit %s |
a0d0e21e |
1471 | |
1472 | (F) You used an 8 or 9 in a octal number. |
1473 | |
399388f4 |
1474 | =item Illegal binary digit %s ignored |
1475 | |
1476 | (W) You may have tried to use a digit other than 0 or 1 in a binary number. |
1477 | Interpretation of the binary number stopped before the offending digit. |
1478 | |
1479 | =item Illegal octal digit %s ignored |
748a9306 |
1480 | |
1481 | (W) You may have tried to use an 8 or 9 in a octal number. Interpretation |
1482 | of the octal number stopped before the 8 or 9. |
1483 | |
651978e7 |
1484 | =item Illegal hexadecimal digit %s ignored |
6ff81951 |
1485 | |
1486 | (W) You may have tried to use a character other than 0 - 9 or A - F in a |
1487 | hexadecimal number. Interpretation of the hexadecimal number stopped |
1488 | before the illegal character. |
1489 | |
54310121 |
1490 | =item Illegal switch in PERL5OPT: %s |
1491 | |
1492 | (X) The PERL5OPT environment variable may only be used to set the |
1493 | following switches: B<-[DIMUdmw]>. |
1494 | |
9607fc9c |
1495 | =item In string, @%s now must be written as \@%s |
1496 | |
1497 | (F) It used to be that Perl would try to guess whether you wanted an |
1498 | array interpolated or a literal @. It did this when the string was first |
1499 | used at runtime. Now strings are parsed at compile time, and ambiguous |
1500 | instances of @ must be disambiguated, either by prepending a backslash to |
1501 | indicate a literal, or by declaring (or using) the array within the |
1502 | program before the string (lexically). (Someday it will simply assume |
1503 | that an unbackslashed @ interpolates an array.) |
1504 | |
a0d0e21e |
1505 | =item Insecure dependency in %s |
1506 | |
8b1a09fc |
1507 | (F) You tried to do something that the tainting mechanism didn't like. |
a0d0e21e |
1508 | The tainting mechanism is turned on when you're running setuid or setgid, |
1509 | or when you specify B<-T> to turn it on explicitly. The tainting mechanism |
1510 | labels all data that's derived directly or indirectly from the user, |
1511 | who is considered to be unworthy of your trust. If any such data is |
1512 | used in a "dangerous" operation, you get this error. See L<perlsec> |
1513 | for more information. |
1514 | |
1515 | =item Insecure directory in %s |
1516 | |
1517 | (F) You can't use system(), exec(), or a piped open in a setuid or setgid |
8b1a09fc |
1518 | script if C<$ENV{PATH}> contains a directory that is writable by the world. |
a0d0e21e |
1519 | See L<perlsec>. |
1520 | |
62f468fc |
1521 | =item Insecure $ENV{%s} while running %s |
a0d0e21e |
1522 | |
1523 | (F) You can't use system(), exec(), or a piped open in a setuid or |
62f468fc |
1524 | setgid script if any of C<$ENV{PATH}>, C<$ENV{IFS}>, C<$ENV{CDPATH}>, |
1525 | C<$ENV{ENV}> or C<$ENV{BASH_ENV}> are derived from data supplied (or |
a0d0e21e |
1526 | potentially supplied) by the user. The script must set the path to a |
1527 | known value, using trustworthy data. See L<perlsec>. |
1528 | |
a7ae9550 |
1529 | =item Integer overflow in %s number |
1530 | |
651978e7 |
1531 | (S) The literal hexadecimal, octal or binary number you have specified |
1532 | is too big for your architecture. On a 32-bit architecture the largest |
a7ae9550 |
1533 | literal hex, octal or binary number representable without overflow |
1534 | is 0xFFFFFFFF, 037777777777, or 0b11111111111111111111111111111111 |
1535 | respectively. Note that Perl transparently promotes decimal literals |
1536 | to a floating point representation internally--subject to loss of |
1537 | precision errors in subsequent operations--so this limit usually |
1538 | doesn't apply to decimal literals. |
bbce6d69 |
1539 | |
748a9306 |
1540 | =item Internal inconsistency in tracking vforks |
1541 | |
1542 | (S) A warning peculiar to VMS. Perl keeps track of the number |
5f05dabc |
1543 | of times you've called C<fork> and C<exec>, to determine |
2ba9eb46 |
1544 | whether the current call to C<exec> should affect the current |
b687b08b |
1545 | script or a subprocess (see L<perlvms/"exec LIST">). Somehow, this count |
748a9306 |
1546 | has become scrambled, so Perl is making a guess and treating |
1547 | this C<exec> as a request to terminate the Perl script |
1548 | and execute the specified command. |
1549 | |
a0d0e21e |
1550 | =item internal disaster in regexp |
1551 | |
1552 | (P) Something went badly wrong in the regular expression parser. |
1553 | |
4eb79ab5 |
1554 | =item glob failed (%s) |
1555 | |
1556 | (W) Something went wrong with the external program(s) used for C<glob> |
1557 | and C<E<lt>*.cE<gt>>. Usually, this means that you supplied a C<glob> |
1558 | pattern that caused the external program to fail and exit with a nonzero |
1559 | status. If the message indicates that the abnormal exit resulted in a |
1560 | coredump, this may also mean that your csh (C shell) is broken. If so, |
1561 | you should change all of the csh-related variables in config.sh: If you |
1562 | have tcsh, make the variables refer to it as if it were csh (e.g. |
1563 | C<full_csh='/usr/bin/tcsh'>); otherwise, make them all empty (except that |
1564 | C<d_csh> should be C<'undef'>) so that Perl will think csh is missing. |
1565 | In either case, after editing config.sh, run C<./Configure -S> and |
1566 | rebuild Perl. |
5cd24f17 |
1567 | |
a0d0e21e |
1568 | =item internal urp in regexp at /%s/ |
1569 | |
1570 | (P) Something went badly awry in the regular expression parser. |
1571 | |
1572 | =item invalid [] range in regexp |
1573 | |
1574 | (F) The range specified in a character class had a minimum character |
1575 | greater than the maximum character. See L<perlre>. |
1576 | |
c635e13b |
1577 | =item Invalid conversion in %s: "%s" |
1578 | |
878e08df |
1579 | (W) Perl does not understand the given format conversion. |
c635e13b |
1580 | See L<perlfunc/sprintf>. |
1581 | |
96e4d5b1 |
1582 | =item Invalid type in pack: '%s' |
1583 | |
8903cb82 |
1584 | (F) The given character is not a valid pack type. See L<perlfunc/pack>. |
fb73857a |
1585 | (W) The given character is not a valid pack type but used to be silently |
1586 | ignored. |
96e4d5b1 |
1587 | |
1588 | =item Invalid type in unpack: '%s' |
1589 | |
8903cb82 |
1590 | (F) The given character is not a valid unpack type. See L<perlfunc/unpack>. |
fb73857a |
1591 | (W) The given character is not a valid unpack type but used to be silently |
1592 | ignored. |
96e4d5b1 |
1593 | |
a0d0e21e |
1594 | =item ioctl is not implemented |
1595 | |
1596 | (F) Your machine apparently doesn't implement ioctl(), which is pretty |
1597 | strange for a machine that supports C. |
1598 | |
1599 | =item junk on end of regexp |
1600 | |
1601 | (P) The regular expression parser is confused. |
1602 | |
1603 | =item Label not found for "last %s" |
1604 | |
1605 | (F) You named a loop to break out of, but you're not currently in a |
1606 | loop of that name, not even if you count where you were called from. |
1607 | See L<perlfunc/last>. |
1608 | |
1609 | =item Label not found for "next %s" |
1610 | |
1611 | (F) You named a loop to continue, but you're not currently in a loop of |
1612 | that name, not even if you count where you were called from. See |
1613 | L<perlfunc/last>. |
1614 | |
1615 | =item Label not found for "redo %s" |
1616 | |
1617 | (F) You named a loop to restart, but you're not currently in a loop of |
1618 | that name, not even if you count where you were called from. See |
1619 | L<perlfunc/last>. |
1620 | |
85ab1d1d |
1621 | =item leaving effective %s failed |
5ff3f7a4 |
1622 | |
85ab1d1d |
1623 | (F) While under the C<use filetest> pragma, switching the real and |
5ff3f7a4 |
1624 | effective uids or gids failed. |
1625 | |
a0d0e21e |
1626 | =item listen() on closed fd |
1627 | |
1628 | (W) You tried to do a listen on a closed socket. Did you forget to check |
1629 | the return value of your socket() call? See L<perlfunc/listen>. |
1630 | |
a0d0e21e |
1631 | =item Method for operation %s not found in package %s during blessing |
1632 | |
1633 | (F) An attempt was made to specify an entry in an overloading table that |
e7ea3e70 |
1634 | doesn't resolve to a valid subroutine. See L<overload>. |
a0d0e21e |
1635 | |
1636 | =item Might be a runaway multi-line %s string starting on line %d |
1637 | |
1638 | (S) An advisory indicating that the previous error may have been caused |
1639 | by a missing delimiter on a string or pattern, because it eventually |
1640 | ended earlier on the current line. |
1641 | |
1642 | =item Misplaced _ in number |
1643 | |
1644 | (W) An underline in a decimal constant wasn't on a 3-digit boundary. |
1645 | |
1646 | =item Missing $ on loop variable |
1647 | |
8b1a09fc |
1648 | (F) Apparently you've been programming in B<csh> too much. Variables are always |
1649 | mentioned with the $ in Perl, unlike in the shells, where it can vary from |
a0d0e21e |
1650 | one line to the next. |
1651 | |
1652 | =item Missing comma after first argument to %s function |
1653 | |
1654 | (F) While certain functions allow you to specify a filehandle or an |
1655 | "indirect object" before the argument list, this ain't one of them. |
1656 | |
06eaf0bc |
1657 | =item Missing command in piped open |
1658 | |
1659 | (W) You used the C<open(FH, "| command")> or C<open(FH, "command |")> |
1660 | construction, but the command was missing or blank. |
1661 | |
748a9306 |
1662 | =item Missing operator before %s? |
1663 | |
1664 | (S) This is an educated guess made in conjunction with the message "%s |
1665 | found where operator expected". Often the missing operator is a comma. |
1666 | |
d98d5fff |
1667 | =item Missing right curly or square bracket |
a0d0e21e |
1668 | |
d98d5fff |
1669 | (F) The lexer counted more opening curly or square brackets than |
1670 | closing ones. As a general rule, you'll find it's missing near the place |
1671 | you were last editing. |
a0d0e21e |
1672 | |
a0d0e21e |
1673 | =item Modification of a read-only value attempted |
1674 | |
1675 | (F) You tried, directly or indirectly, to change the value of a |
5f05dabc |
1676 | constant. You didn't, of course, try "2 = 1", because the compiler |
a0d0e21e |
1677 | catches that. But an easy way to do the same thing is: |
1678 | |
1679 | sub mod { $_[0] = 1 } |
1680 | mod(2); |
1681 | |
1682 | Another way is to assign to a substr() that's off the end of the string. |
1683 | |
4fe4fdb3 |
1684 | =item Modification of non-creatable array value attempted, subscript %d |
a0d0e21e |
1685 | |
1686 | (F) You tried to make an array value spring into existence, and the |
1687 | subscript was probably negative, even counting from end of the array |
1688 | backwards. |
1689 | |
4fe4fdb3 |
1690 | =item Modification of non-creatable hash value attempted, subscript "%s" |
a0d0e21e |
1691 | |
19a09eb8 |
1692 | (P) You tried to make a hash value spring into existence, and it couldn't |
a0d0e21e |
1693 | be created for some peculiar reason. |
1694 | |
1695 | =item Module name must be constant |
1696 | |
1697 | (F) Only a bare module name is allowed as the first argument to a "use". |
1698 | |
1699 | =item msg%s not implemented |
1700 | |
1701 | (F) You don't have System V message IPC on your system. |
1702 | |
1703 | =item Multidimensional syntax %s not supported |
1704 | |
8b1a09fc |
1705 | (W) Multidimensional arrays aren't written like C<$foo[1,2,3]>. They're written |
1706 | like C<$foo[1][2][3]>, as in C. |
1707 | |
1708 | =item Name "%s::%s" used only once: possible typo |
1709 | |
68dc0745 |
1710 | (W) Typographical errors often show up as unique variable names. |
1711 | If you had a good reason for having a unique name, then just mention |
1712 | it again somehow to suppress the message. The C<use vars> pragma is |
1713 | provided for just this purpose. |
a0d0e21e |
1714 | |
1715 | =item Negative length |
1716 | |
1717 | (F) You tried to do a read/write/send/recv operation with a buffer length |
1718 | that is less than 0. This is difficult to imagine. |
1719 | |
1720 | =item nested *?+ in regexp |
1721 | |
5f05dabc |
1722 | (F) You can't quantify a quantifier without intervening parentheses. So |
a0d0e21e |
1723 | things like ** or +* or ?* are illegal. |
1724 | |
5f05dabc |
1725 | Note, however, that the minimal matching quantifiers, C<*?>, C<+?>, and C<??> appear |
a0d0e21e |
1726 | to be nested quantifiers, but aren't. See L<perlre>. |
1727 | |
1728 | =item No #! line |
1729 | |
1730 | (F) The setuid emulator requires that scripts have a well-formed #! line |
1731 | even on machines that don't support the #! construct. |
1732 | |
1733 | =item No %s allowed while running setuid |
1734 | |
1735 | (F) Certain operations are deemed to be too insecure for a setuid or setgid |
1736 | script to even be allowed to attempt. Generally speaking there will be |
1737 | another way to do what you want that is, if not secure, at least securable. |
1738 | See L<perlsec>. |
1739 | |
1740 | =item No B<-e> allowed in setuid scripts |
1741 | |
1742 | (F) A setuid script can't be specified by the user. |
1743 | |
1744 | =item No comma allowed after %s |
1745 | |
1746 | (F) A list operator that has a filehandle or "indirect object" is not |
1747 | allowed to have a comma between that and the following arguments. |
1748 | Otherwise it'd be just another one of the arguments. |
1749 | |
0a753a76 |
1750 | One possible cause for this is that you expected to have imported a |
1751 | constant to your name space with B<use> or B<import> while no such |
1752 | importing took place, it may for example be that your operating system |
1753 | does not support that particular constant. Hopefully you did use an |
1754 | explicit import list for the constants you expect to see, please see |
1755 | L<perlfunc/use> and L<perlfunc/import>. While an explicit import list |
1756 | would probably have caught this error earlier it naturally does not |
1757 | remedy the fact that your operating system still does not support that |
1758 | constant. Maybe you have a typo in the constants of the symbol import |
1759 | list of B<use> or B<import> or in the constant name at the line where |
1760 | this error was triggered? |
1761 | |
748a9306 |
1762 | =item No command into which to pipe on command line |
1763 | |
1764 | (F) An error peculiar to VMS. Perl handles its own command line redirection, |
54310121 |
1765 | and found a '|' at the end of the command line, so it doesn't know where you |
748a9306 |
1766 | want to pipe the output from this command. |
1767 | |
a0d0e21e |
1768 | =item No DB::DB routine defined |
1769 | |
1770 | (F) The currently executing code was compiled with the B<-d> switch, |
1771 | but for some reason the perl5db.pl file (or some facsimile thereof) |
1772 | didn't define a routine to be called at the beginning of each |
1773 | statement. Which is odd, because the file should have been required |
1774 | automatically, and should have blown up the require if it didn't parse |
1775 | right. |
1776 | |
1777 | =item No dbm on this machine |
1778 | |
1779 | (P) This is counted as an internal error, because every machine should |
5f05dabc |
1780 | supply dbm nowadays, because Perl comes with SDBM. See L<SDBM_File>. |
a0d0e21e |
1781 | |
1782 | =item No DBsub routine |
1783 | |
1784 | (F) The currently executing code was compiled with the B<-d> switch, |
1785 | but for some reason the perl5db.pl file (or some facsimile thereof) |
1786 | didn't define a DB::sub routine to be called at the beginning of each |
1787 | ordinary subroutine call. |
1788 | |
8b1a09fc |
1789 | =item No error file after 2E<gt> or 2E<gt>E<gt> on command line |
748a9306 |
1790 | |
1791 | (F) An error peculiar to VMS. Perl handles its own command line redirection, |
8b1a09fc |
1792 | and found a '2E<gt>' or a '2E<gt>E<gt>' on the command line, but can't find |
1793 | the name of the file to which to write data destined for stderr. |
748a9306 |
1794 | |
8b1a09fc |
1795 | =item No input file after E<lt> on command line |
748a9306 |
1796 | |
1797 | (F) An error peculiar to VMS. Perl handles its own command line redirection, |
8b1a09fc |
1798 | and found a 'E<lt>' on the command line, but can't find the name of the file |
1799 | from which to read data for stdin. |
748a9306 |
1800 | |
8b1a09fc |
1801 | =item No output file after E<gt> on command line |
748a9306 |
1802 | |
1803 | (F) An error peculiar to VMS. Perl handles its own command line redirection, |
8b1a09fc |
1804 | and found a lone 'E<gt>' at the end of the command line, so it doesn't know |
54310121 |
1805 | where you wanted to redirect stdout. |
748a9306 |
1806 | |
8b1a09fc |
1807 | =item No output file after E<gt> or E<gt>E<gt> on command line |
748a9306 |
1808 | |
1809 | (F) An error peculiar to VMS. Perl handles its own command line redirection, |
8b1a09fc |
1810 | and found a 'E<gt>' or a 'E<gt>E<gt>' on the command line, but can't find the |
1811 | name of the file to which to write data destined for stdout. |
748a9306 |
1812 | |
a0d0e21e |
1813 | =item No Perl script found in input |
1814 | |
1815 | (F) You called C<perl -x>, but no line was found in the file beginning |
1816 | with #! and containing the word "perl". |
1817 | |
1818 | =item No setregid available |
1819 | |
1820 | (F) Configure didn't find anything resembling the setregid() call for |
1821 | your system. |
1822 | |
1823 | =item No setreuid available |
1824 | |
1825 | (F) Configure didn't find anything resembling the setreuid() call for |
1826 | your system. |
1827 | |
1828 | =item No space allowed after B<-I> |
1829 | |
1830 | (F) The argument to B<-I> must follow the B<-I> immediately with no |
1831 | intervening space. |
1832 | |
57079c46 |
1833 | =item No such array field |
1834 | |
1835 | (F) You tried to access an array as a hash, but the field name used is |
1836 | not defined. The hash at index 0 should map all valid field names to |
1837 | array indices for that to work. |
1838 | |
f1192cee |
1839 | =item No such field "%s" in variable %s of type %s |
1840 | |
1841 | (F) You tried to access a field of a typed variable where the type |
1842 | does not know about the field name. The field names are looked up in |
1843 | the %FIELDS hash in the type package at compile time. The %FIELDS hash |
1844 | is usually set up with the 'fields' pragma. |
1845 | |
748a9306 |
1846 | =item No such pipe open |
1847 | |
1848 | (P) An error peculiar to VMS. The internal routine my_pclose() tried to |
1849 | close a pipe which hadn't been opened. This should have been caught earlier as |
1850 | an attempt to close an unopened filehandle. |
1851 | |
a0d0e21e |
1852 | =item No such signal: SIG%s |
1853 | |
1854 | (W) You specified a signal name as a subscript to %SIG that was not recognized. |
1855 | Say C<kill -l> in your shell to see the valid signal names on your system. |
1856 | |
bd3fa61c |
1857 | =item no UTC offset information; assuming local time is UTC |
1858 | |
db7c17d7 |
1859 | (S) A warning peculiar to VMS. Perl was unable to find the local |
f675dbe5 |
1860 | timezone offset, so it's assuming that local system time is equivalent |
1861 | to UTC. If it's not, define the logical name F<SYS$TIMEZONE_DIFFERENTIAL> |
1862 | to translate to the number of seconds which need to be added to UTC to |
1863 | get local time. |
1864 | |
a0d0e21e |
1865 | =item Not a CODE reference |
1866 | |
1867 | (F) Perl was trying to evaluate a reference to a code value (that is, a |
1868 | subroutine), but found a reference to something else instead. You can |
1869 | use the ref() function to find out what kind of ref it really was. |
1870 | See also L<perlref>. |
1871 | |
1872 | =item Not a format reference |
1873 | |
1874 | (F) I'm not sure how you managed to generate a reference to an anonymous |
1875 | format, but this indicates you did, and that it didn't exist. |
1876 | |
1877 | =item Not a GLOB reference |
1878 | |
55497cff |
1879 | (F) Perl was trying to evaluate a reference to a "typeglob" (that is, |
a0d0e21e |
1880 | a symbol table entry that looks like C<*foo>), but found a reference to |
1881 | something else instead. You can use the ref() function to find out |
1882 | what kind of ref it really was. See L<perlref>. |
1883 | |
1884 | =item Not a HASH reference |
1885 | |
1886 | (F) Perl was trying to evaluate a reference to a hash value, but |
1887 | found a reference to something else instead. You can use the ref() |
1888 | function to find out what kind of ref it really was. See L<perlref>. |
1889 | |
1890 | =item Not a perl script |
1891 | |
1892 | (F) The setuid emulator requires that scripts have a well-formed #! line |
1893 | even on machines that don't support the #! construct. The line must |
1894 | mention perl. |
1895 | |
1896 | =item Not a SCALAR reference |
1897 | |
1898 | (F) Perl was trying to evaluate a reference to a scalar value, but |
1899 | found a reference to something else instead. You can use the ref() |
1900 | function to find out what kind of ref it really was. See L<perlref>. |
1901 | |
1902 | =item Not a subroutine reference |
1903 | |
1904 | (F) Perl was trying to evaluate a reference to a code value (that is, a |
1905 | subroutine), but found a reference to something else instead. You can |
1906 | use the ref() function to find out what kind of ref it really was. |
1907 | See also L<perlref>. |
1908 | |
e7ea3e70 |
1909 | =item Not a subroutine reference in overload table |
a0d0e21e |
1910 | |
1911 | (F) An attempt was made to specify an entry in an overloading table that |
8b1a09fc |
1912 | doesn't somehow point to a valid subroutine. See L<overload>. |
a0d0e21e |
1913 | |
1914 | =item Not an ARRAY reference |
1915 | |
1916 | (F) Perl was trying to evaluate a reference to an array value, but |
1917 | found a reference to something else instead. You can use the ref() |
1918 | function to find out what kind of ref it really was. See L<perlref>. |
1919 | |
1920 | =item Not enough arguments for %s |
1921 | |
1922 | (F) The function requires more arguments than you specified. |
1923 | |
1924 | =item Not enough format arguments |
1925 | |
1926 | (W) A format specified more picture fields than the next line supplied. |
1927 | See L<perlform>. |
1928 | |
1929 | =item Null filename used |
1930 | |
5f05dabc |
1931 | (F) You can't require the null filename, especially because on many machines |
a0d0e21e |
1932 | that means the current directory! See L<perlfunc/require>. |
1933 | |
55497cff |
1934 | =item Null picture in formline |
1935 | |
1936 | (F) The first argument to formline must be a valid format picture |
1937 | specification. It was found to be empty, which probably means you |
1938 | supplied it an uninitialized value. See L<perlform>. |
1939 | |
a0d0e21e |
1940 | =item NULL OP IN RUN |
1941 | |
1942 | (P) Some internal routine called run() with a null opcode pointer. |
1943 | |
1944 | =item Null realloc |
1945 | |
1946 | (P) An attempt was made to realloc NULL. |
1947 | |
1948 | =item NULL regexp argument |
1949 | |
5f05dabc |
1950 | (P) The internal pattern matching routines blew it big time. |
a0d0e21e |
1951 | |
1952 | =item NULL regexp parameter |
1953 | |
1954 | (P) The internal pattern matching routines are out of their gourd. |
1955 | |
fc36a67e |
1956 | =item Number too long |
1957 | |
1958 | (F) Perl limits the representation of decimal numbers in programs to about |
1959 | about 250 characters. You've exceeded that length. Future versions of |
1960 | Perl are likely to eliminate this arbitrary limitation. In the meantime, |
1961 | try using scientific notation (e.g. "1e6" instead of "1_000_000"). |
1962 | |
1930e939 |
1963 | =item Odd number of elements in hash assignment |
a0d0e21e |
1964 | |
1930e939 |
1965 | (S) You specified an odd number of elements to initialize a hash, which |
1966 | is odd, because hashes come in key/value pairs. |
a0d0e21e |
1967 | |
bbce6d69 |
1968 | =item Offset outside string |
1969 | |
1970 | (F) You tried to do a read/write/send/recv operation with an offset |
1971 | pointing outside the buffer. This is difficult to imagine. |
1972 | The sole exception to this is that C<sysread()>ing past the buffer |
1973 | will extend the buffer and zero pad the new area. |
1974 | |
a0d0e21e |
1975 | =item oops: oopsAV |
1976 | |
1977 | (S) An internal warning that the grammar is screwed up. |
1978 | |
1979 | =item oops: oopsHV |
1980 | |
1981 | (S) An internal warning that the grammar is screwed up. |
1982 | |
56f7f34b |
1983 | =item Operation `%s': no method found, %s |
44a8e56a |
1984 | |
e7ea3e70 |
1985 | (F) An attempt was made to perform an overloaded operation for which |
1986 | no handler was defined. While some handlers can be autogenerated in |
1987 | terms of other handlers, there is no default handler for any |
1988 | operation, unless C<fallback> overloading key is specified to be |
1989 | true. See L<overload>. |
44a8e56a |
1990 | |
748a9306 |
1991 | =item Operator or semicolon missing before %s |
1992 | |
1993 | (S) You used a variable or subroutine call where the parser was |
1994 | expecting an operator. The parser has assumed you really meant |
1995 | to use an operator, but this is highly likely to be incorrect. |
1996 | For example, if you say "*foo *foo" it will be interpreted as |
1997 | if you said "*foo * 'foo'". |
1998 | |
a0d0e21e |
1999 | =item Out of memory for yacc stack |
2000 | |
2001 | (F) The yacc parser wanted to grow its stack so it could continue parsing, |
2002 | but realloc() wouldn't give it more memory, virtual or otherwise. |
2003 | |
1b979e0a |
2004 | =item Out of memory during request for %s |
a0d0e21e |
2005 | |
55497cff |
2006 | (X|F) The malloc() function returned 0, indicating there was insufficient |
54310121 |
2007 | remaining memory (or virtual memory) to satisfy the request. |
eff9c6e2 |
2008 | |
2009 | The request was judged to be small, so the possibility to trap it |
2010 | depends on the way perl was compiled. By default it is not trappable. |
2011 | However, if compiled for this, Perl may use the contents of C<$^M> as |
2012 | an emergency pool after die()ing with this message. In this case the |
55497cff |
2013 | error is trappable I<once>. |
2014 | |
1b979e0a |
2015 | =item Out of memory during "large" request for %s |
55497cff |
2016 | |
2017 | (F) The malloc() function returned 0, indicating there was insufficient |
2018 | remaining memory (or virtual memory) to satisfy the request. However, |
2019 | the request was judged large enough (compile-time default is 64K), so |
2020 | a possibility to shut down by trapping this error is granted. |
2021 | |
1b979e0a |
2022 | =item Out of memory during ridiculously large request |
2023 | |
2024 | (F) You can't allocate more than 2^31+"small amount" bytes. This error |
2025 | is most likely to be caused by a typo in the Perl program. e.g., C<$arr[time]> |
2026 | instead of C<$arr[$time]>. |
2027 | |
a0d0e21e |
2028 | =item page overflow |
2029 | |
2030 | (W) A single call to write() produced more lines than can fit on a page. |
2031 | See L<perlform>. |
2032 | |
2033 | =item panic: ck_grep |
2034 | |
2035 | (P) Failed an internal consistency check trying to compile a grep. |
2036 | |
2037 | =item panic: ck_split |
2038 | |
2039 | (P) Failed an internal consistency check trying to compile a split. |
2040 | |
2041 | =item panic: corrupt saved stack index |
2042 | |
2043 | (P) The savestack was requested to restore more localized values than there |
2044 | are in the savestack. |
2045 | |
810b8aa5 |
2046 | =item panic: del_backref |
2047 | |
2048 | (P) Failed an internal consistency check while trying to reset a weak |
2049 | reference. |
2050 | |
a0d0e21e |
2051 | =item panic: die %s |
2052 | |
2053 | (P) We popped the context stack to an eval context, and then discovered |
2054 | it wasn't an eval context. |
2055 | |
2056 | =item panic: do_match |
2057 | |
2058 | (P) The internal pp_match() routine was called with invalid operational data. |
2059 | |
2060 | =item panic: do_split |
2061 | |
2062 | (P) Something terrible went wrong in setting up for the split. |
2063 | |
2064 | =item panic: do_subst |
2065 | |
2066 | (P) The internal pp_subst() routine was called with invalid operational data. |
2067 | |
2068 | =item panic: do_trans |
2069 | |
2070 | (P) The internal do_trans() routine was called with invalid operational data. |
2071 | |
c635e13b |
2072 | =item panic: frexp |
2073 | |
2074 | (P) The library function frexp() failed, making printf("%f") impossible. |
2075 | |
a0d0e21e |
2076 | =item panic: goto |
2077 | |
2078 | (P) We popped the context stack to a context with the specified label, |
2079 | and then discovered it wasn't a context we know how to do a goto in. |
2080 | |
2081 | =item panic: INTERPCASEMOD |
2082 | |
2083 | (P) The lexer got into a bad state at a case modifier. |
2084 | |
2085 | =item panic: INTERPCONCAT |
2086 | |
2087 | (P) The lexer got into a bad state parsing a string with brackets. |
2088 | |
e446cec8 |
2089 | =item panic: kid popen errno read |
2090 | |
2091 | (F) forked child returned an incomprehensible message about its errno. |
2092 | |
a0d0e21e |
2093 | =item panic: last |
2094 | |
2095 | (P) We popped the context stack to a block context, and then discovered |
2096 | it wasn't a block context. |
2097 | |
2098 | =item panic: leave_scope clearsv |
2099 | |
5f05dabc |
2100 | (P) A writable lexical variable became read-only somehow within the scope. |
a0d0e21e |
2101 | |
2102 | =item panic: leave_scope inconsistency |
2103 | |
2104 | (P) The savestack probably got out of sync. At least, there was an |
2105 | invalid enum on the top of it. |
2106 | |
2107 | =item panic: malloc |
2108 | |
2109 | (P) Something requested a negative number of bytes of malloc. |
2110 | |
810b8aa5 |
2111 | =item panic: magic_killbackrefs |
2112 | |
2113 | (P) Failed an internal consistency check while trying to reset all weak |
2114 | references to an object. |
2115 | |
a0d0e21e |
2116 | =item panic: mapstart |
2117 | |
2118 | (P) The compiler is screwed up with respect to the map() function. |
2119 | |
2120 | =item panic: null array |
2121 | |
2122 | (P) One of the internal array routines was passed a null AV pointer. |
2123 | |
2124 | =item panic: pad_alloc |
2125 | |
2126 | (P) The compiler got confused about which scratch pad it was allocating |
2127 | and freeing temporaries and lexicals from. |
2128 | |
2129 | =item panic: pad_free curpad |
2130 | |
2131 | (P) The compiler got confused about which scratch pad it was allocating |
2132 | and freeing temporaries and lexicals from. |
2133 | |
2134 | =item panic: pad_free po |
2135 | |
2136 | (P) An invalid scratch pad offset was detected internally. |
2137 | |
2138 | =item panic: pad_reset curpad |
2139 | |
2140 | (P) The compiler got confused about which scratch pad it was allocating |
2141 | and freeing temporaries and lexicals from. |
2142 | |
2143 | =item panic: pad_sv po |
2144 | |
2145 | (P) An invalid scratch pad offset was detected internally. |
2146 | |
2147 | =item panic: pad_swipe curpad |
2148 | |
2149 | (P) The compiler got confused about which scratch pad it was allocating |
2150 | and freeing temporaries and lexicals from. |
2151 | |
2152 | =item panic: pad_swipe po |
2153 | |
2154 | (P) An invalid scratch pad offset was detected internally. |
2155 | |
2156 | =item panic: pp_iter |
2157 | |
2158 | (P) The foreach iterator got called in a non-loop context frame. |
2159 | |
2160 | =item panic: realloc |
2161 | |
2162 | (P) Something requested a negative number of bytes of realloc. |
2163 | |
2164 | =item panic: restartop |
2165 | |
2166 | (P) Some internal routine requested a goto (or something like it), and |
2167 | didn't supply the destination. |
2168 | |
2169 | =item panic: return |
2170 | |
2171 | (P) We popped the context stack to a subroutine or eval context, and |
2172 | then discovered it wasn't a subroutine or eval context. |
2173 | |
2174 | =item panic: scan_num |
2175 | |
2176 | (P) scan_num() got called on something that wasn't a number. |
2177 | |
2178 | =item panic: sv_insert |
2179 | |
2180 | (P) The sv_insert() routine was told to remove more string than there |
2181 | was string. |
2182 | |
2183 | =item panic: top_env |
2184 | |
6224f72b |
2185 | (P) The compiler attempted to do a goto, or something weird like that. |
a0d0e21e |
2186 | |
2187 | =item panic: yylex |
2188 | |
2189 | (P) The lexer got into a bad state while processing a case modifier. |
2190 | |
7b8d334a |
2191 | =item Parentheses missing around "%s" list |
a0d0e21e |
2192 | |
2193 | (W) You said something like |
2194 | |
2195 | my $foo, $bar = @_; |
2196 | |
2197 | when you meant |
2198 | |
2199 | my ($foo, $bar) = @_; |
2200 | |
2201 | Remember that "my" and "local" bind closer than comma. |
2202 | |
2203 | =item Perl %3.3f required--this is only version %s, stopped |
2204 | |
2205 | (F) The module in question uses features of a version of Perl more recent |
2206 | than the currently running version. How long has it been since you upgraded, |
2207 | anyway? See L<perlfunc/require>. |
2208 | |
2209 | =item Permission denied |
2210 | |
2211 | (F) The setuid emulator in suidperl decided you were up to no good. |
2212 | |
bd3fa61c |
2213 | =item pid %x not a child |
748a9306 |
2214 | |
2215 | (W) A warning peculiar to VMS. Waitpid() was asked to wait for a process which |
2216 | isn't a subprocess of the current process. While this is fine from VMS' |
2217 | perspective, it's probably not what you intended. |
2218 | |
a0d0e21e |
2219 | =item POSIX getpgrp can't take an argument |
2220 | |
2221 | (F) Your C compiler uses POSIX getpgrp(), which takes no argument, unlike |
2222 | the BSD version, which takes a pid. |
2223 | |
bbce6d69 |
2224 | =item Possible attempt to put comments in qw() list |
2225 | |
774d564b |
2226 | (W) qw() lists contain items separated by whitespace; as with literal |
2227 | strings, comment characters are not ignored, but are instead treated |
2228 | as literal data. (You may have used different delimiters than the |
7b8d334a |
2229 | parentheses shown here; braces are also frequently used.) |
bbce6d69 |
2230 | |
774d564b |
2231 | You probably wrote something like this: |
2232 | |
54310121 |
2233 | @list = qw( |
774d564b |
2234 | a # a comment |
bbce6d69 |
2235 | b # another comment |
774d564b |
2236 | ); |
bbce6d69 |
2237 | |
2238 | when you should have written this: |
2239 | |
774d564b |
2240 | @list = qw( |
54310121 |
2241 | a |
2242 | b |
774d564b |
2243 | ); |
2244 | |
2245 | If you really want comments, build your list the |
2246 | old-fashioned way, with quotes and commas: |
2247 | |
2248 | @list = ( |
2249 | 'a', # a comment |
2250 | 'b', # another comment |
2251 | ); |
bbce6d69 |
2252 | |
2253 | =item Possible attempt to separate words with commas |
2254 | |
774d564b |
2255 | (W) qw() lists contain items separated by whitespace; therefore commas |
68dc0745 |
2256 | aren't needed to separate the items. (You may have used different |
774d564b |
2257 | delimiters than the parentheses shown here; braces are also frequently |
2258 | used.) |
bbce6d69 |
2259 | |
54310121 |
2260 | You probably wrote something like this: |
bbce6d69 |
2261 | |
774d564b |
2262 | qw! a, b, c !; |
2263 | |
2264 | which puts literal commas into some of the list items. Write it without |
2265 | commas if you don't want them to appear in your data: |
bbce6d69 |
2266 | |
774d564b |
2267 | qw! a b c !; |
bbce6d69 |
2268 | |
a0d0e21e |
2269 | =item Possible memory corruption: %s overflowed 3rd argument |
2270 | |
2271 | (F) An ioctl() or fcntl() returned more than Perl was bargaining for. |
2272 | Perl guesses a reasonable buffer size, but puts a sentinel byte at the |
2273 | end of the buffer just in case. This sentinel byte got clobbered, and |
2274 | Perl assumes that memory is now corrupted. See L<perlfunc/ioctl>. |
2275 | |
2276 | =item Precedence problem: open %s should be open(%s) |
2277 | |
2278 | (S) The old irregular construct |
cb1a09d0 |
2279 | |
a0d0e21e |
2280 | open FOO || die; |
2281 | |
2282 | is now misinterpreted as |
2283 | |
2284 | open(FOO || die); |
2285 | |
68dc0745 |
2286 | because of the strict regularization of Perl 5's grammar into unary |
2287 | and list operators. (The old open was a little of both.) You must |
2288 | put parentheses around the filehandle, or use the new "or" operator |
2289 | instead of "||". |
a0d0e21e |
2290 | |
2291 | =item print on closed filehandle %s |
2292 | |
2293 | (W) The filehandle you're printing on got itself closed sometime before now. |
2294 | Check your logic flow. |
2295 | |
2296 | =item printf on closed filehandle %s |
2297 | |
2298 | (W) The filehandle you're writing to got itself closed sometime before now. |
2299 | Check your logic flow. |
2300 | |
2301 | =item Probable precedence problem on %s |
2302 | |
54310121 |
2303 | (W) The compiler found a bareword where it expected a conditional, |
a0d0e21e |
2304 | which often indicates that an || or && was parsed as part of the |
2305 | last argument of the previous construct, for example: |
2306 | |
2307 | open FOO || die; |
2308 | |
3fe9a6f1 |
2309 | =item Prototype mismatch: %s vs %s |
4633a7c4 |
2310 | |
3fe9a6f1 |
2311 | (S) The subroutine being declared or defined had previously been declared |
2312 | or defined with a different function prototype. |
4633a7c4 |
2313 | |
89ea2908 |
2314 | =item Range iterator outside integer range |
2315 | |
2316 | (F) One (or both) of the numeric arguments to the range operator ".." |
2317 | are outside the range which can be represented by integers internally. |
2318 | One possible workaround is to force Perl to use magical string |
2319 | increment by prepending "0" to your numbers. |
2320 | |
af8c498a |
2321 | =item Read on closed filehandle %s |
a0d0e21e |
2322 | |
2323 | (W) The filehandle you're reading from got itself closed sometime before now. |
2324 | Check your logic flow. |
2325 | |
2326 | =item Reallocation too large: %lx |
2327 | |
54310121 |
2328 | (F) You can't allocate more than 64K on an MS-DOS machine. |
a0d0e21e |
2329 | |
2330 | =item Recompile perl with B<-D>DEBUGGING to use B<-D> switch |
2331 | |
2332 | (F) You can't use the B<-D> option unless the code to produce the |
2333 | desired output is compiled into Perl, which entails some overhead, |
2334 | which is why it's currently left out of your copy. |
2335 | |
3e0ccd42 |
2336 | =item Recursive inheritance detected in package '%s' |
a0d0e21e |
2337 | |
2338 | (F) More than 100 levels of inheritance were used. Probably indicates |
2339 | an unintended loop in your inheritance hierarchy. |
2340 | |
3e0ccd42 |
2341 | =item Recursive inheritance detected while looking for method '%s' in package '%s' |
2342 | |
2343 | (F) More than 100 levels of inheritance were encountered while invoking a |
2344 | method. Probably indicates an unintended loop in your inheritance hierarchy. |
2345 | |
1930e939 |
2346 | =item Reference found where even-sized list expected |
2347 | |
2348 | (W) You gave a single reference where Perl was expecting a list with |
2349 | an even number of elements (for assignment to a hash). This |
2350 | usually means that you used the anon hash constructor when you meant |
2351 | to use parens. In any case, a hash requires key/value B<pairs>. |
7b8d334a |
2352 | |
2353 | %hash = { one => 1, two => 2, }; # WRONG |
2354 | %hash = [ qw/ an anon array / ]; # WRONG |
2355 | %hash = ( one => 1, two => 2, ); # right |
2356 | %hash = qw( one 1 two 2 ); # also fine |
2357 | |
810b8aa5 |
2358 | =item Reference is already weak |
2359 | |
2360 | (W) You have attempted to weaken a reference that is already weak. |
2361 | Doing so has no effect. |
2362 | |
a0d0e21e |
2363 | =item Reference miscount in sv_replace() |
2364 | |
2365 | (W) The internal sv_replace() function was handed a new SV with a |
2366 | reference count of other than 1. |
2367 | |
fb73857a |
2368 | =item regexp *+ operand could be empty |
2369 | |
2370 | (F) The part of the regexp subject to either the * or + quantifier |
2371 | could match an empty string. |
2372 | |
a0d0e21e |
2373 | =item regexp memory corruption |
2374 | |
2375 | (P) The regular expression engine got confused by what the regular |
2376 | expression compiler gave it. |
2377 | |
2378 | =item regexp out of space |
2379 | |
2380 | (P) A "can't happen" error, because safemalloc() should have caught it earlier. |
2381 | |
a0d0e21e |
2382 | =item Reversed %s= operator |
2383 | |
2384 | (W) You wrote your assignment operator backwards. The = must always |
2385 | comes last, to avoid ambiguity with subsequent unary operators. |
2386 | |
2387 | =item Runaway format |
2388 | |
2389 | (F) Your format contained the ~~ repeat-until-blank sequence, but it |
2390 | produced 200 lines at once, and the 200th line looked exactly like the |
2391 | 199th line. Apparently you didn't arrange for the arguments to exhaust |
2392 | themselves, either by using ^ instead of @ (for scalar variables), or by |
2393 | shifting or popping (for array variables). See L<perlform>. |
2394 | |
2395 | =item Scalar value @%s[%s] better written as $%s[%s] |
2396 | |
a6006777 |
2397 | (W) You've used an array slice (indicated by @) to select a single element of |
a0d0e21e |
2398 | an array. Generally it's better to ask for a scalar value (indicated by $). |
8b1a09fc |
2399 | The difference is that C<$foo[&bar]> always behaves like a scalar, both when |
2400 | assigning to it and when evaluating its argument, while C<@foo[&bar]> behaves |
a0d0e21e |
2401 | like a list when you assign to it, and provides a list context to its |
5f05dabc |
2402 | subscript, which can do weird things if you're expecting only one subscript. |
a0d0e21e |
2403 | |
748a9306 |
2404 | On the other hand, if you were actually hoping to treat the array |
5f05dabc |
2405 | element as a list, you need to look into how references work, because |
748a9306 |
2406 | Perl will not magically convert between scalars and lists for you. See |
2407 | L<perlref>. |
2408 | |
a6006777 |
2409 | =item Scalar value @%s{%s} better written as $%s{%s} |
2410 | |
2411 | (W) You've used a hash slice (indicated by @) to select a single element of |
2412 | a hash. Generally it's better to ask for a scalar value (indicated by $). |
2413 | The difference is that C<$foo{&bar}> always behaves like a scalar, both when |
2414 | assigning to it and when evaluating its argument, while C<@foo{&bar}> behaves |
2415 | like a list when you assign to it, and provides a list context to its |
2416 | subscript, which can do weird things if you're expecting only one subscript. |
2417 | |
2418 | On the other hand, if you were actually hoping to treat the hash |
2419 | element as a list, you need to look into how references work, because |
2420 | Perl will not magically convert between scalars and lists for you. See |
2421 | L<perlref>. |
2422 | |
a0d0e21e |
2423 | =item Script is not setuid/setgid in suidperl |
2424 | |
54310121 |
2425 | (F) Oddly, the suidperl program was invoked on a script without a setuid |
2426 | or setgid bit set. This doesn't make much sense. |
a0d0e21e |
2427 | |
2428 | =item Search pattern not terminated |
2429 | |
2430 | (F) The lexer couldn't find the final delimiter of a // or m{} |
2431 | construct. Remember that bracketing delimiters count nesting level. |
fb73857a |
2432 | Missing the leading C<$> from a variable C<$m> may cause this error. |
a0d0e21e |
2433 | |
96e4d5b1 |
2434 | =item %sseek() on unopened file |
a0d0e21e |
2435 | |
96e4d5b1 |
2436 | (W) You tried to use the seek() or sysseek() function on a filehandle that |
2437 | was either never opened or has since been closed. |
a0d0e21e |
2438 | |
2439 | =item select not implemented |
2440 | |
2441 | (F) This machine doesn't implement the select() system call. |
2442 | |
2443 | =item sem%s not implemented |
2444 | |
2445 | (F) You don't have System V semaphore IPC on your system. |
2446 | |
2447 | =item semi-panic: attempt to dup freed string |
2448 | |
2449 | (S) The internal newSVsv() routine was called to duplicate a scalar |
2450 | that had previously been marked as free. |
2451 | |
2452 | =item Semicolon seems to be missing |
2453 | |
2454 | (W) A nearby syntax error was probably caused by a missing semicolon, |
2455 | or possibly some other missing operator, such as a comma. |
2456 | |
2457 | =item Send on closed socket |
2458 | |
2459 | (W) The filehandle you're sending to got itself closed sometime before now. |
2460 | Check your logic flow. |
2461 | |
1b1626e4 |
2462 | =item Sequence (? incomplete |
7b8d334a |
2463 | |
1b1626e4 |
2464 | (F) A regular expression ended with an incomplete extension (?. |
2465 | See L<perlre>. |
2466 | |
a0d0e21e |
2467 | =item Sequence (?#... not terminated |
2468 | |
2469 | (F) A regular expression comment must be terminated by a closing |
5f05dabc |
2470 | parenthesis. Embedded parentheses aren't allowed. See L<perlre>. |
a0d0e21e |
2471 | |
2472 | =item Sequence (?%s...) not implemented |
2473 | |
2474 | (F) A proposed regular expression extension has the character reserved |
2475 | but has not yet been written. See L<perlre>. |
2476 | |
2477 | =item Sequence (?%s...) not recognized |
2478 | |
2479 | (F) You used a regular expression extension that doesn't make sense. |
2480 | See L<perlre>. |
2481 | |
a5f75d66 |
2482 | =item Server error |
2483 | |
9607fc9c |
2484 | Also known as "500 Server error". |
2485 | |
2486 | B<This is a CGI error, not a Perl error>. |
2487 | |
2488 | You need to make sure your script is executable, is accessible by the user |
2489 | CGI is running the script under (which is probably not the user account you |
2490 | tested it under), does not rely on any environment variables (like PATH) |
2491 | from the user it isn't running under, and isn't in a location where the CGI |
2492 | server can't find it, basically, more or less. Please see the following |
2493 | for more information: |
2494 | |
be94a901 |
2495 | http://www.perl.com/CPAN/doc/FAQs/cgi/idiots-guide.html |
2496 | http://www.perl.com/CPAN/doc/FAQs/cgi/perl-cgi-faq.html |
9607fc9c |
2497 | ftp://rtfm.mit.edu/pub/usenet/news.answers/www/cgi-faq |
2498 | http://hoohoo.ncsa.uiuc.edu/cgi/interface.html |
2499 | http://www-genome.wi.mit.edu/WWW/faqs/www-security-faq.html |
a5f75d66 |
2500 | |
be94a901 |
2501 | You should also look at L<perlfaq9>. |
2502 | |
a0d0e21e |
2503 | =item setegid() not implemented |
2504 | |
8b1a09fc |
2505 | (F) You tried to assign to C<$)>, and your operating system doesn't support |
a0d0e21e |
2506 | the setegid() system call (or equivalent), or at least Configure didn't |
2507 | think so. |
2508 | |
2509 | =item seteuid() not implemented |
2510 | |
8b1a09fc |
2511 | (F) You tried to assign to C<$E<gt>>, and your operating system doesn't support |
a0d0e21e |
2512 | the seteuid() system call (or equivalent), or at least Configure didn't |
2513 | think so. |
2514 | |
2515 | =item setrgid() not implemented |
2516 | |
8b1a09fc |
2517 | (F) You tried to assign to C<$(>, and your operating system doesn't support |
a0d0e21e |
2518 | the setrgid() system call (or equivalent), or at least Configure didn't |
2519 | think so. |
2520 | |
2521 | =item setruid() not implemented |
2522 | |
1f8d2005 |
2523 | (F) You tried to assign to C<$E<lt>>, and your operating system doesn't support |
a0d0e21e |
2524 | the setruid() system call (or equivalent), or at least Configure didn't |
2525 | think so. |
2526 | |
2527 | =item Setuid/gid script is writable by world |
2528 | |
2529 | (F) The setuid emulator won't run a script that is writable by the world, |
2530 | because the world might have written on it already. |
2531 | |
2532 | =item shm%s not implemented |
2533 | |
2534 | (F) You don't have System V shared memory IPC on your system. |
2535 | |
2536 | =item shutdown() on closed fd |
2537 | |
2538 | (W) You tried to do a shutdown on a closed socket. Seems a bit superfluous. |
2539 | |
f86702cc |
2540 | =item SIG%s handler "%s" not defined |
a0d0e21e |
2541 | |
2542 | (W) The signal handler named in %SIG doesn't, in fact, exist. Perhaps you |
2543 | put it into the wrong package? |
2544 | |
2545 | =item sort is now a reserved word |
2546 | |
2547 | (F) An ancient error message that almost nobody ever runs into anymore. |
2548 | But before sort was a keyword, people sometimes used it as a filehandle. |
2549 | |
2550 | =item Sort subroutine didn't return a numeric value |
2551 | |
2552 | (F) A sort comparison routine must return a number. You probably blew |
4633a7c4 |
2553 | it by not using C<E<lt>=E<gt>> or C<cmp>, or by not using them correctly. |
a0d0e21e |
2554 | See L<perlfunc/sort>. |
2555 | |
2556 | =item Sort subroutine didn't return single value |
2557 | |
2558 | (F) A sort comparison subroutine may not return a list value with more |
2559 | or less than one element. See L<perlfunc/sort>. |
2560 | |
2561 | =item Split loop |
2562 | |
2563 | (P) The split was looping infinitely. (Obviously, a split shouldn't iterate |
2564 | more times than there are characters of input, which is what happened.) |
2565 | See L<perlfunc/split>. |
2566 | |
8b1a09fc |
2567 | =item Stat on unopened file E<lt>%sE<gt> |
a0d0e21e |
2568 | |
2569 | (W) You tried to use the stat() function (or an equivalent file test) |
54310121 |
2570 | on a filehandle that was either never opened or has since been closed. |
a0d0e21e |
2571 | |
2572 | =item Statement unlikely to be reached |
2573 | |
2574 | (W) You did an exec() with some statement after it other than a die(). |
2575 | This is almost always an error, because exec() never returns unless |
2576 | there was a failure. You probably wanted to use system() instead, |
2577 | which does return. To suppress this warning, put the exec() in a block |
2578 | by itself. |
2579 | |
17feb5d5 |
2580 | =item Strange *+?{} on zero-length expression |
2581 | |
2582 | (W) You applied a regular expression quantifier in a place where it |
2583 | makes no sense, such as on a zero-width assertion. |
2584 | Try putting the quantifier inside the assertion instead. For example, |
2585 | the way to match "abc" provided that it is followed by three |
2586 | repetitions of "xyz" is C</abc(?=(?:xyz){3})/>, not C</abc(?=xyz){3}/>. |
2587 | |
e7ea3e70 |
2588 | =item Stub found while resolving method `%s' overloading `%s' in package `%s' |
2589 | |
2590 | (P) Overloading resolution over @ISA tree may be broken by importation stubs. |
2591 | Stubs should never be implicitely created, but explicit calls to C<can> |
2592 | may break this. |
2593 | |
a0d0e21e |
2594 | =item Subroutine %s redefined |
2595 | |
2596 | (W) You redefined a subroutine. To suppress this warning, say |
2597 | |
2598 | { |
0453d815 |
2599 | no warning; |
a0d0e21e |
2600 | eval "sub name { ... }"; |
2601 | } |
2602 | |
2603 | =item Substitution loop |
2604 | |
2605 | (P) The substitution was looping infinitely. (Obviously, a |
2606 | substitution shouldn't iterate more times than there are characters of |
68dc0745 |
2607 | input, which is what happened.) See the discussion of substitution in |
5f05dabc |
2608 | L<perlop/"Quote and Quote-like Operators">. |
a0d0e21e |
2609 | |
2610 | =item Substitution pattern not terminated |
2611 | |
2612 | (F) The lexer couldn't find the interior delimiter of a s/// or s{}{} |
2613 | construct. Remember that bracketing delimiters count nesting level. |
fb73857a |
2614 | Missing the leading C<$> from variable C<$s> may cause this error. |
a0d0e21e |
2615 | |
2616 | =item Substitution replacement not terminated |
2617 | |
2618 | (F) The lexer couldn't find the final delimiter of a s/// or s{}{} |
2619 | construct. Remember that bracketing delimiters count nesting level. |
fb73857a |
2620 | Missing the leading C<$> from variable C<$s> may cause this error. |
a0d0e21e |
2621 | |
2622 | =item substr outside of string |
2623 | |
3e3baf6d |
2624 | (S),(W) You tried to reference a substr() that pointed outside of a |
2625 | string. That is, the absolute value of the offset was larger than the |
2626 | length of the string. See L<perlfunc/substr>. This warning is |
2627 | mandatory if substr is used in an lvalue context (as the left hand side |
2628 | of an assignment or as a subroutine argument for example). |
a0d0e21e |
2629 | |
f86702cc |
2630 | =item suidperl is no longer needed since %s |
a0d0e21e |
2631 | |
2632 | (F) Your Perl was compiled with B<-D>SETUID_SCRIPTS_ARE_SECURE_NOW, but a |
2633 | version of the setuid emulator somehow got run anyway. |
2634 | |
85ab1d1d |
2635 | =item switching effective %s is not implemented |
2636 | |
2637 | (F) While under the C<use filetest> pragma, we cannot switch the |
2638 | real and effective uids or gids. |
2639 | |
a0d0e21e |
2640 | =item syntax error |
2641 | |
2642 | (F) Probably means you had a syntax error. Common reasons include: |
2643 | |
2644 | A keyword is misspelled. |
2645 | A semicolon is missing. |
2646 | A comma is missing. |
2647 | An opening or closing parenthesis is missing. |
2648 | An opening or closing brace is missing. |
2649 | A closing quote is missing. |
2650 | |
2651 | Often there will be another error message associated with the syntax |
2652 | error giving more information. (Sometimes it helps to turn on B<-w>.) |
2653 | The error message itself often tells you where it was in the line when |
2654 | it decided to give up. Sometimes the actual error is several tokens |
5f05dabc |
2655 | before this, because Perl is good at understanding random input. |
a0d0e21e |
2656 | Occasionally the line number may be misleading, and once in a blue moon |
2657 | the only way to figure out what's triggering the error is to call |
2658 | C<perl -c> repeatedly, chopping away half the program each time to see |
2659 | if the error went away. Sort of the cybernetic version of S<20 questions>. |
2660 | |
cb1a09d0 |
2661 | =item syntax error at line %d: `%s' unexpected |
2662 | |
8b1a09fc |
2663 | (A) You've accidentally run your script through the Bourne shell |
3a52c276 |
2664 | instead of Perl. Check the #! line, or manually feed your script |
cb1a09d0 |
2665 | into Perl yourself. |
2666 | |
6087ac44 |
2667 | =item System V %s is not implemented on this machine |
a0d0e21e |
2668 | |
6087ac44 |
2669 | (F) You tried to do something with a function beginning with "sem", |
2670 | "shm", or "msg" but that System V IPC is not implemented in your |
2671 | machine. In some machines the functionality can exist but be |
2672 | unconfigured. Consult your system support. |
a0d0e21e |
2673 | |
2674 | =item Syswrite on closed filehandle |
2675 | |
2676 | (W) The filehandle you're writing to got itself closed sometime before now. |
2677 | Check your logic flow. |
2678 | |
fc36a67e |
2679 | =item Target of goto is too deeply nested |
2680 | |
2681 | (F) You tried to use C<goto> to reach a label that was too deeply |
2682 | nested for Perl to reach. Perl is doing you a favor by refusing. |
2683 | |
8903cb82 |
2684 | =item tell() on unopened file |
a0d0e21e |
2685 | |
8903cb82 |
2686 | (W) You tried to use the tell() function on a filehandle that was either |
2687 | never opened or has since been closed. |
a0d0e21e |
2688 | |
8b1a09fc |
2689 | =item Test on unopened file E<lt>%sE<gt> |
a0d0e21e |
2690 | |
2691 | (W) You tried to invoke a file test operator on a filehandle that isn't |
2692 | open. Check your logic. See also L<perlfunc/-X>. |
2693 | |
2694 | =item That use of $[ is unsupported |
2695 | |
8b1a09fc |
2696 | (F) Assignment to C<$[> is now strictly circumscribed, and interpreted as |
5f05dabc |
2697 | a compiler directive. You may say only one of |
a0d0e21e |
2698 | |
2699 | $[ = 0; |
2700 | $[ = 1; |
2701 | ... |
2702 | local $[ = 0; |
2703 | local $[ = 1; |
2704 | ... |
2705 | |
2706 | This is to prevent the problem of one module changing the array base |
2707 | out from under another module inadvertently. See L<perlvar/$[>. |
2708 | |
2709 | =item The %s function is unimplemented |
2710 | |
2711 | The function indicated isn't implemented on this architecture, according |
2712 | to the probings of Configure. |
2713 | |
f86702cc |
2714 | =item The crypt() function is unimplemented due to excessive paranoia |
a0d0e21e |
2715 | |
2716 | (F) Configure couldn't find the crypt() function on your machine, |
2717 | probably because your vendor didn't supply it, probably because they |
8b1a09fc |
2718 | think the U.S. Government thinks it's a secret, or at least that they |
a0d0e21e |
2719 | will continue to pretend that it is. And if you quote me on that, I |
2720 | will deny it. |
2721 | |
2722 | =item The stat preceding C<-l _> wasn't an lstat |
2723 | |
2724 | (F) It makes no sense to test the current stat buffer for symbolic linkhood |
2725 | if the last stat that wrote to the stat buffer already went past |
2726 | the symlink to get to the real file. Use an actual filename instead. |
2727 | |
f675dbe5 |
2728 | =item This Perl can't reset CRTL eviron elements (%s) |
2729 | |
2730 | =item This Perl can't set CRTL environ elements (%s=%s) |
2731 | |
2732 | (W) Warnings peculiar to VMS. You tried to change or delete an element |
2733 | of the CRTL's internal environ array, but your copy of Perl wasn't |
2734 | built with a CRTL that contained the setenv() function. You'll need to |
2735 | rebuild Perl with a CRTL that does, or redefine F<PERL_ENV_TABLES> (see |
2736 | L<perlvms>) so that the environ array isn't the target of the change to |
2737 | %ENV which produced the warning. |
2738 | |
a0d0e21e |
2739 | =item times not implemented |
2740 | |
2741 | (F) Your version of the C library apparently doesn't do times(). I suspect |
2742 | you're not running on Unix. |
2743 | |
2744 | =item Too few args to syscall |
2745 | |
2746 | (F) There has to be at least one argument to syscall() to specify the |
2747 | system call to call, silly dilly. |
2748 | |
9607fc9c |
2749 | =item Too late for "B<-T>" option |
2750 | |
2751 | (X) The #! line (or local equivalent) in a Perl script contains the |
8cc95fdb |
2752 | B<-T> option, but Perl was not invoked with B<-T> in its command line. |
2753 | This is an error because, by the time Perl discovers a B<-T> in a |
2754 | script, it's too late to properly taint everything from the environment. |
2755 | So Perl gives up. |
f86702cc |
2756 | |
9607fc9c |
2757 | If the Perl script is being executed as a command using the #! |
2758 | mechanism (or its local equivalent), this error can usually be fixed |
2759 | by editing the #! line so that the B<-T> option is a part of Perl's |
2760 | first argument: e.g. change C<perl -n -T> to C<perl -T -n>. |
f86702cc |
2761 | |
9607fc9c |
2762 | If the Perl script is being executed as C<perl scriptname>, then the |
2763 | B<-T> option must appear on the command line: C<perl -T scriptname>. |
f86702cc |
2764 | |
8cc95fdb |
2765 | =item Too late for "-%s" option |
2766 | |
2767 | (X) The #! line (or local equivalent) in a Perl script contains the |
2768 | B<-M> or B<-m> option. This is an error because B<-M> and B<-m> options |
2769 | are not intended for use inside scripts. Use the C<use> pragma instead. |
2770 | |
cb1a09d0 |
2771 | =item Too many ('s |
2772 | |
2773 | =item Too many )'s |
2774 | |
2775 | (A) You've accidentally run your script through B<csh> instead |
3a52c276 |
2776 | of Perl. Check the #! line, or manually feed your script into |
2777 | Perl yourself. |
cb1a09d0 |
2778 | |
a0d0e21e |
2779 | =item Too many args to syscall |
2780 | |
5f05dabc |
2781 | (F) Perl supports a maximum of only 14 args to syscall(). |
a0d0e21e |
2782 | |
2783 | =item Too many arguments for %s |
2784 | |
2785 | (F) The function requires fewer arguments than you specified. |
2786 | |
2787 | =item trailing \ in regexp |
2788 | |
2789 | (F) The regular expression ends with an unbackslashed backslash. Backslash |
2790 | it. See L<perlre>. |
2791 | |
2c268ad5 |
2792 | =item Transliteration pattern not terminated |
a0d0e21e |
2793 | |
2794 | (F) The lexer couldn't find the interior delimiter of a tr/// or tr[][] |
fb73857a |
2795 | or y/// or y[][] construct. Missing the leading C<$> from variables |
2796 | C<$tr> or C<$y> may cause this error. |
a0d0e21e |
2797 | |
2c268ad5 |
2798 | =item Transliteration replacement not terminated |
a0d0e21e |
2799 | |
2800 | (F) The lexer couldn't find the final delimiter of a tr/// or tr[][] |
2801 | construct. |
2802 | |
2803 | =item truncate not implemented |
2804 | |
2805 | (F) Your machine doesn't implement a file truncation mechanism that |
2806 | Configure knows about. |
2807 | |
2808 | =item Type of arg %d to %s must be %s (not %s) |
2809 | |
2810 | (F) This function requires the argument in that position to be of a |
8b1a09fc |
2811 | certain type. Arrays must be @NAME or C<@{EXPR}>. Hashes must be |
2812 | %NAME or C<%{EXPR}>. No implicit dereferencing is allowed--use the |
a0d0e21e |
2813 | {EXPR} forms as an explicit dereference. See L<perlref>. |
2814 | |
2815 | =item umask: argument is missing initial 0 |
2816 | |
eec2d3df |
2817 | (W) A umask of 222 is incorrect. It should be 0222, because octal |
2818 | literals always start with 0 in Perl, as in C. |
2819 | |
2820 | =item umask not implemented |
2821 | |
2822 | (F) Your machine doesn't implement the umask function and you tried |
2823 | to use it to restrict permissions for yourself (EXPR & 0700). |
a0d0e21e |
2824 | |
4633a7c4 |
2825 | =item Unable to create sub named "%s" |
2826 | |
2827 | (F) You attempted to create or access a subroutine with an illegal name. |
2828 | |
a0d0e21e |
2829 | =item Unbalanced context: %d more PUSHes than POPs |
2830 | |
2831 | (W) The exit code detected an internal inconsistency in how many execution |
2832 | contexts were entered and left. |
2833 | |
2834 | =item Unbalanced saves: %d more saves than restores |
2835 | |
2836 | (W) The exit code detected an internal inconsistency in how many |
2837 | values were temporarily localized. |
2838 | |
2839 | =item Unbalanced scopes: %d more ENTERs than LEAVEs |
2840 | |
2841 | (W) The exit code detected an internal inconsistency in how many blocks |
2842 | were entered and left. |
2843 | |
2844 | =item Unbalanced tmps: %d more allocs than frees |
2845 | |
2846 | (W) The exit code detected an internal inconsistency in how many mortal |
2847 | scalars were allocated and freed. |
2848 | |
2849 | =item Undefined format "%s" called |
2850 | |
2851 | (F) The format indicated doesn't seem to exist. Perhaps it's really in |
2852 | another package? See L<perlform>. |
2853 | |
2854 | =item Undefined sort subroutine "%s" called |
2855 | |
2856 | (F) The sort comparison routine specified doesn't seem to exist. Perhaps |
2857 | it's in a different package? See L<perlfunc/sort>. |
2858 | |
2859 | =item Undefined subroutine &%s called |
2860 | |
2861 | (F) The subroutine indicated hasn't been defined, or if it was, it |
2862 | has since been undefined. |
2863 | |
2864 | =item Undefined subroutine called |
2865 | |
2866 | (F) The anonymous subroutine you're trying to call hasn't been defined, |
2867 | or if it was, it has since been undefined. |
2868 | |
2869 | =item Undefined subroutine in sort |
2870 | |
2871 | (F) The sort comparison routine specified is declared but doesn't seem to |
2872 | have been defined yet. See L<perlfunc/sort>. |
2873 | |
4633a7c4 |
2874 | =item Undefined top format "%s" called |
2875 | |
2876 | (F) The format indicated doesn't seem to exist. Perhaps it's really in |
2877 | another package? See L<perlform>. |
2878 | |
20408e3c |
2879 | =item Undefined value assigned to typeglob |
2880 | |
2881 | (W) An undefined value was assigned to a typeglob, a la C<*foo = undef>. |
2882 | This does nothing. It's possible that you really mean C<undef *foo>. |
2883 | |
a0d0e21e |
2884 | =item unexec of %s into %s failed! |
2885 | |
2886 | (F) The unexec() routine failed for some reason. See your local FSF |
2887 | representative, who probably put it there in the first place. |
2888 | |
2889 | =item Unknown BYTEORDER |
2890 | |
5f05dabc |
2891 | (F) There are no byte-swapping functions for a machine with this byte order. |
a0d0e21e |
2892 | |
f675dbe5 |
2893 | =item Unknown process %x sent message to prime_env_iter: %s |
2894 | |
2895 | (P) An error peculiar to VMS. Perl was reading values for %ENV before |
2896 | iterating over it, and someone else stuck a message in the stream of |
2897 | data Perl expected. Someone's very confused, or perhaps trying to |
2898 | subvert Perl's population of %ENV for nefarious purposes. |
2899 | |
a0d0e21e |
2900 | =item unmatched () in regexp |
2901 | |
2902 | (F) Unbackslashed parentheses must always be balanced in regular |
2903 | expressions. If you're a vi user, the % key is valuable for finding |
5f05dabc |
2904 | the matching parenthesis. See L<perlre>. |
a0d0e21e |
2905 | |
d98d5fff |
2906 | =item Unmatched right %s bracket |
a0d0e21e |
2907 | |
d98d5fff |
2908 | (F) The lexer counted more closing curly or square brackets than |
2909 | opening ones, so you're probably missing a matching opening bracket. |
2910 | As a general rule, you'll find the missing one (so to speak) near the |
2911 | place you were last editing. |
a0d0e21e |
2912 | |
2913 | =item unmatched [] in regexp |
2914 | |
2915 | (F) The brackets around a character class must match. If you wish to |
2916 | include a closing bracket in a character class, backslash it or put it first. |
2917 | See L<perlre>. |
2918 | |
2919 | =item Unquoted string "%s" may clash with future reserved word |
2920 | |
54310121 |
2921 | (W) You used a bareword that might someday be claimed as a reserved word. |
a0d0e21e |
2922 | It's best to put such a word in quotes, or capitalize it somehow, or insert |
2923 | an underbar into it. You might also declare it as a subroutine. |
2924 | |
54310121 |
2925 | =item Unrecognized character %s |
a0d0e21e |
2926 | |
54310121 |
2927 | (F) The Perl parser has no idea what to do with the specified character |
2928 | in your Perl script (or eval). Perhaps you tried to run a compressed |
2929 | script, a binary program, or a directory as a Perl program. |
a0d0e21e |
2930 | |
c9f97d15 |
2931 | =item Unrecognized escape \\%c passed through |
2932 | |
2933 | (W) You used a backslash-character combination which is not recognized |
2934 | by Perl. |
2935 | |
a0d0e21e |
2936 | =item Unrecognized signal name "%s" |
2937 | |
2938 | (F) You specified a signal name to the kill() function that was not recognized. |
2939 | Say C<kill -l> in your shell to see the valid signal names on your system. |
2940 | |
90248788 |
2941 | =item Unrecognized switch: -%s (-h will show valid options) |
a0d0e21e |
2942 | |
2943 | (F) You specified an illegal option to Perl. Don't do that. |
2944 | (If you think you didn't do that, check the #! line to see if it's |
2945 | supplying the bad switch on your behalf.) |
2946 | |
2947 | =item Unsuccessful %s on filename containing newline |
2948 | |
2949 | (W) A file operation was attempted on a filename, and that operation |
2950 | failed, PROBABLY because the filename contained a newline, PROBABLY |
54310121 |
2951 | because you forgot to chop() or chomp() it off. See L<perlfunc/chomp>. |
a0d0e21e |
2952 | |
2953 | =item Unsupported directory function "%s" called |
2954 | |
2955 | (F) Your machine doesn't support opendir() and readdir(). |
2956 | |
54310121 |
2957 | =item Unsupported function fork |
2958 | |
2959 | (F) Your version of executable does not support forking. |
2960 | |
2961 | Note that under some systems, like OS/2, there may be different flavors of |
2962 | Perl executables, some of which may support fork, some not. Try changing |
2963 | the name you call Perl by to C<perl_>, C<perl__>, and so on. |
2964 | |
a0d0e21e |
2965 | =item Unsupported function %s |
2966 | |
7b8d334a |
2967 | (F) This machine doesn't implement the indicated function, apparently. |
a0d0e21e |
2968 | At least, Configure doesn't think so. |
2969 | |
2970 | =item Unsupported socket function "%s" called |
2971 | |
2972 | (F) Your machine doesn't support the Berkeley socket mechanism, or at |
2973 | least that's what Configure thought. |
2974 | |
8b1a09fc |
2975 | =item Unterminated E<lt>E<gt> operator |
a0d0e21e |
2976 | |
2977 | (F) The lexer saw a left angle bracket in a place where it was expecting |
2978 | a term, so it's looking for the corresponding right angle bracket, and not |
2979 | finding it. Chances are you left some needed parentheses out earlier in |
2980 | the line, and you really meant a "less than". |
2981 | |
2982 | =item Use of $# is deprecated |
2983 | |
8b1a09fc |
2984 | (D) This was an ill-advised attempt to emulate a poorly defined B<awk> feature. |
a0d0e21e |
2985 | Use an explicit printf() or sprintf() instead. |
2986 | |
2987 | =item Use of $* is deprecated |
2988 | |
4a6725af |
2989 | (D) This variable magically turned on multi-line pattern matching, both for |
a0d0e21e |
2990 | you and for any luckless subroutine that you happen to call. You should |
2991 | use the new C<//m> and C<//s> modifiers now to do that without the dangerous |
2992 | action-at-a-distance effects of C<$*>. |
2993 | |
748a9306 |
2994 | =item Use of %s in printf format not supported |
2995 | |
5f05dabc |
2996 | (F) You attempted to use a feature of printf that is accessible from |
2997 | only C. This usually means there's a better way to do it in Perl. |
748a9306 |
2998 | |
8b1a09fc |
2999 | =item Use of bare E<lt>E<lt> to mean E<lt>E<lt>"" is deprecated |
4633a7c4 |
3000 | |
3001 | (D) You are now encouraged to use the explicitly quoted form if you |
3fe9a6f1 |
3002 | wish to use an empty line as the terminator of the here-document. |
4633a7c4 |
3003 | |
a0d0e21e |
3004 | =item Use of implicit split to @_ is deprecated |
3005 | |
3006 | (D) It makes a lot of work for the compiler when you clobber a |
3007 | subroutine's argument list, so it's better if you assign the results of |
3008 | a split() explicitly to an array (or list). |
3009 | |
dc848c6f |
3010 | =item Use of inherited AUTOLOAD for non-method %s() is deprecated |
3011 | |
5cd24f17 |
3012 | (D) As an (ahem) accidental feature, C<AUTOLOAD> subroutines are looked |
3013 | up as methods (using the C<@ISA> hierarchy) even when the subroutines to |
3014 | be autoloaded were called as plain functions (e.g. C<Foo::bar()>), not |
7b8d334a |
3015 | as methods (e.g. C<Foo-E<gt>bar()> or C<$obj-E<gt>bar()>). |
dc848c6f |
3016 | |
3017 | This bug will be rectified in Perl 5.005, which will use method lookup |
3018 | only for methods' C<AUTOLOAD>s. However, there is a significant base |
3019 | of existing code that may be using the old behavior. So, as an |
3020 | interim step, Perl 5.004 issues an optional warning when non-methods |
3021 | use inherited C<AUTOLOAD>s. |
3022 | |
3023 | The simple rule is: Inheritance will not work when autoloading |
3024 | non-methods. The simple fix for old code is: In any module that used to |
3025 | depend on inheriting C<AUTOLOAD> for non-methods from a base class named |
3026 | C<BaseClass>, execute C<*AUTOLOAD = \&BaseClass::AUTOLOAD> during startup. |
3027 | |
fb73857a |
3028 | In code that currently says C<use AutoLoader; @ISA = qw(AutoLoader);> you |
3029 | should remove AutoLoader from @ISA and change C<use AutoLoader;> to |
7b8d334a |
3030 | C<use AutoLoader 'AUTOLOAD';>. |
fb73857a |
3031 | |
85b81015 |
3032 | =item Use of reserved word "%s" is deprecated |
3033 | |
3034 | (D) The indicated bareword is a reserved word. Future versions of perl |
3035 | may use it as a keyword, so you're better off either explicitly quoting |
3036 | the word in a manner appropriate for its context of use, or using a |
3037 | different name altogether. The warning can be suppressed for subroutine |
3038 | names by either adding a C<&> prefix, or using a package qualifier, |
3039 | e.g. C<&our()>, or C<Foo::our()>. |
3040 | |
dc848c6f |
3041 | =item Use of %s is deprecated |
3042 | |
3043 | (D) The construct indicated is no longer recommended for use, generally |
3044 | because there's a better way to do it, and also because the old way has |
3045 | bad side effects. |
3046 | |
a0d0e21e |
3047 | =item Use of uninitialized value |
3048 | |
3049 | (W) An undefined value was used as if it were already defined. It was |
3050 | interpreted as a "" or a 0, but maybe it was a mistake. To suppress this |
5311ebfa |
3051 | warning assign a defined value to your variables. |
a0d0e21e |
3052 | |
8202fd39 |
3053 | =item Useless use of "re" pragma |
3054 | |
3055 | (W) You did C<use re;> without any arguments. That isn't very useful. |
3056 | |
a0d0e21e |
3057 | =item Useless use of %s in void context |
3058 | |
3059 | (W) You did something without a side effect in a context that does nothing |
3060 | with the return value, such as a statement that doesn't return a value |
3061 | from a block, or the left side of a scalar comma operator. Very often |
3062 | this points not to stupidity on your part, but a failure of Perl to parse |
3063 | your program the way you thought it would. For example, you'd get this |
3064 | if you mixed up your C precedence with Python precedence and said |
3065 | |
3066 | $one, $two = 1, 2; |
3067 | |
3068 | when you meant to say |
3069 | |
3070 | ($one, $two) = (1, 2); |
3071 | |
748a9306 |
3072 | Another common error is to use ordinary parentheses to construct a list |
3073 | reference when you should be using square or curly brackets, for |
3074 | example, if you say |
3075 | |
3076 | $array = (1,2); |
3077 | |
3078 | when you should have said |
3079 | |
3080 | $array = [1,2]; |
3081 | |
3082 | The square brackets explicitly turn a list value into a scalar value, |
3083 | while parentheses do not. So when a parenthesized list is evaluated in |
3084 | a scalar context, the comma is treated like C's comma operator, which |
3085 | throws away the left argument, which is not what you want. See |
3086 | L<perlref> for more on this. |
3087 | |
55497cff |
3088 | =item untie attempted while %d inner references still exist |
3089 | |
3090 | (W) A copy of the object returned from C<tie> (or C<tied>) was still |
3091 | valid when C<untie> was called. |
3092 | |
68dc0745 |
3093 | =item Value of %s can be "0"; test with defined() |
a6006777 |
3094 | |
68dc0745 |
3095 | (W) In a conditional expression, you used <HANDLE>, <*> (glob), C<each()>, |
3096 | or C<readdir()> as a boolean value. Each of these constructs can return a |
3097 | value of "0"; that would make the conditional expression false, which is |
3098 | probably not what you intended. When using these constructs in conditional |
3099 | expressions, test their values with the C<defined> operator. |
a6006777 |
3100 | |
f675dbe5 |
3101 | =item Value of CLI symbol "%s" too long |
3102 | |
3103 | (W) A warning peculiar to VMS. Perl tried to read the value of an %ENV |
3104 | element from a CLI symbol table, and found a resultant string longer |
3105 | than 1024 characters. The return value has been truncated to 1024 |
3106 | characters. |
3107 | |
9607fc9c |
3108 | =item Variable "%s" is not imported%s |
4633a7c4 |
3109 | |
3110 | (F) While "use strict" in effect, you referred to a global variable |
3111 | that you apparently thought was imported from another module, because |
3112 | something else of the same name (usually a subroutine) is exported |
3113 | by that module. It usually means you put the wrong funny character |
3114 | on the front of your variable. |
3115 | |
44a8e56a |
3116 | =item Variable "%s" may be unavailable |
3117 | |
3118 | (W) An inner (nested) I<anonymous> subroutine is inside a I<named> |
3119 | subroutine, and outside that is another subroutine; and the anonymous |
3120 | (innermost) subroutine is referencing a lexical variable defined in |
3121 | the outermost subroutine. For example: |
3122 | |
3123 | sub outermost { my $a; sub middle { sub { $a } } } |
3124 | |
3125 | If the anonymous subroutine is called or referenced (directly or |
3126 | indirectly) from the outermost subroutine, it will share the variable |
3127 | as you would expect. But if the anonymous subroutine is called or |
3128 | referenced when the outermost subroutine is not active, it will see |
3129 | the value of the shared variable as it was before and during the |
3130 | *first* call to the outermost subroutine, which is probably not what |
3131 | you want. |
3132 | |
3133 | In these circumstances, it is usually best to make the middle |
3134 | subroutine anonymous, using the C<sub {}> syntax. Perl has specific |
3135 | support for shared variables in nested anonymous subroutines; a named |
3136 | subroutine in between interferes with this feature. |
3137 | |
3138 | =item Variable "%s" will not stay shared |
3139 | |
3140 | (W) An inner (nested) I<named> subroutine is referencing a lexical |
3141 | variable defined in an outer subroutine. |
3142 | |
3143 | When the inner subroutine is called, it will probably see the value of |
3144 | the outer subroutine's variable as it was before and during the |
3145 | *first* call to the outer subroutine; in this case, after the first |
3146 | call to the outer subroutine is complete, the inner and outer |
3147 | subroutines will no longer share a common value for the variable. In |
3148 | other words, the variable will no longer be shared. |
3149 | |
3150 | Furthermore, if the outer subroutine is anonymous and references a |
3151 | lexical variable outside itself, then the outer and inner subroutines |
3152 | will I<never> share the given variable. |
3153 | |
3154 | This problem can usually be solved by making the inner subroutine |
3155 | anonymous, using the C<sub {}> syntax. When inner anonymous subs that |
3156 | reference variables in outer subroutines are called or referenced, |
54310121 |
3157 | they are automatically rebound to the current values of such |
44a8e56a |
3158 | variables. |
3159 | |
f86702cc |
3160 | =item Variable syntax |
cb1a09d0 |
3161 | |
3162 | (A) You've accidentally run your script through B<csh> instead |
3a52c276 |
3163 | of Perl. Check the #! line, or manually feed your script into |
3164 | Perl yourself. |
cb1a09d0 |
3165 | |
3e6e419a |
3166 | =item perl: warning: Setting locale failed. |
3167 | |
3168 | (S) The whole warning message will look something like: |
3169 | |
3170 | perl: warning: Setting locale failed. |
3171 | perl: warning: Please check that your locale settings: |
3172 | LC_ALL = "En_US", |
3173 | LANG = (unset) |
3174 | are supported and installed on your system. |
3175 | perl: warning: Falling back to the standard locale ("C"). |
3176 | |
3177 | Exactly what were the failed locale settings varies. In the above the |
3178 | settings were that the LC_ALL was "En_US" and the LANG had no value. |
3179 | This error means that Perl detected that you and/or your system |
3180 | administrator have set up the so-called variable system but Perl could |
3181 | not use those settings. This was not dead serious, fortunately: there |
3182 | is a "default locale" called "C" that Perl can and will use, the |
3183 | script will be run. Before you really fix the problem, however, you |
3184 | will get the same error message each time you run Perl. How to really |
3185 | fix the problem can be found in L<perllocale> section B<LOCALE PROBLEMS>. |
3186 | |
7e1af8bc |
3187 | =item Warning: something's wrong |
5f05dabc |
3188 | |
3189 | (W) You passed warn() an empty string (the equivalent of C<warn "">) or |
3190 | you called it with no args and C<$_> was empty. |
3191 | |
f86702cc |
3192 | =item Warning: unable to close filehandle %s properly |
a0d0e21e |
3193 | |
8b1a09fc |
3194 | (S) The implicit close() done by an open() got an error indication on the |
5f05dabc |
3195 | close(). This usually indicates your file system ran out of disk space. |
a0d0e21e |
3196 | |
5f05dabc |
3197 | =item Warning: Use of "%s" without parentheses is ambiguous |
a0d0e21e |
3198 | |
3199 | (S) You wrote a unary operator followed by something that looks like a |
3200 | binary operator that could also have been interpreted as a term or |
3201 | unary operator. For instance, if you know that the rand function |
3202 | has a default argument of 1.0, and you write |
3203 | |
3204 | rand + 5; |
3205 | |
3206 | you may THINK you wrote the same thing as |
3207 | |
3208 | rand() + 5; |
3209 | |
3210 | but in actual fact, you got |
3211 | |
3212 | rand(+5); |
3213 | |
5f05dabc |
3214 | So put in parentheses to say what you really mean. |
a0d0e21e |
3215 | |
af8c498a |
3216 | =item Write on closed filehandle %s |
a0d0e21e |
3217 | |
3218 | (W) The filehandle you're writing to got itself closed sometime before now. |
3219 | Check your logic flow. |
3220 | |
3221 | =item X outside of string |
3222 | |
3223 | (F) You had a pack template that specified a relative position before |
3224 | the beginning of the string being unpacked. See L<perlfunc/pack>. |
3225 | |
3226 | =item x outside of string |
3227 | |
3228 | (F) You had a pack template that specified a relative position after |
3229 | the end of the string being unpacked. See L<perlfunc/pack>. |
3230 | |
3231 | =item Xsub "%s" called in sort |
3232 | |
3233 | (F) The use of an external subroutine as a sort comparison is not yet supported. |
3234 | |
3235 | =item Xsub called in sort |
3236 | |
3237 | (F) The use of an external subroutine as a sort comparison is not yet supported. |
3238 | |
3239 | =item You can't use C<-l> on a filehandle |
3240 | |
3241 | (F) A filehandle represents an opened file, and when you opened the file it |
3242 | already went past any symlink you are presumably trying to look for. |
3243 | Use a filename instead. |
3244 | |
3245 | =item YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET! |
3246 | |
5f05dabc |
3247 | (F) And you probably never will, because you probably don't have the |
a0d0e21e |
3248 | sources to your kernel, and your vendor probably doesn't give a rip |
3249 | about what you want. Your best bet is to use the wrapsuid script in |
3250 | the eg directory to put a setuid C wrapper around your script. |
3251 | |
3252 | =item You need to quote "%s" |
3253 | |
3254 | (W) You assigned a bareword as a signal handler name. Unfortunately, you |
3255 | already have a subroutine of that name declared, which means that Perl 5 |
3256 | will try to call the subroutine when the assignment is executed, which is |
3257 | probably not what you want. (If it IS what you want, put an & in front.) |
3258 | |
3259 | =item [gs]etsockopt() on closed fd |
3260 | |
3261 | (W) You tried to get or set a socket option on a closed socket. |
3262 | Did you forget to check the return value of your socket() call? |
3263 | See L<perlfunc/getsockopt>. |
3264 | |
3265 | =item \1 better written as $1 |
3266 | |
3267 | (W) Outside of patterns, backreferences live on as variables. The use |
5f05dabc |
3268 | of backslashes is grandfathered on the right-hand side of a |
a0d0e21e |
3269 | substitution, but stylistically it's better to use the variable form |
3270 | because other Perl programmers will expect it, and it works better |
3271 | if there are more than 9 backreferences. |
3272 | |
8b1a09fc |
3273 | =item '|' and 'E<lt>' may not both be specified on command line |
748a9306 |
3274 | |
3275 | (F) An error peculiar to VMS. Perl does its own command line redirection, and |
3276 | found that STDIN was a pipe, and that you also tried to redirect STDIN using |
8b1a09fc |
3277 | 'E<lt>'. Only one STDIN stream to a customer, please. |
748a9306 |
3278 | |
8b1a09fc |
3279 | =item '|' and 'E<gt>' may not both be specified on command line |
748a9306 |
3280 | |
3281 | (F) An error peculiar to VMS. Perl does its own command line redirection, and |
3282 | thinks you tried to redirect stdout both to a file and into a pipe to another |
3283 | command. You need to choose one or the other, though nothing's stopping you |
3284 | from piping into a program or Perl script which 'splits' output into two |
3285 | streams, such as |
3286 | |
3287 | open(OUT,">$ARGV[0]") or die "Can't write to $ARGV[0]: $!"; |
3288 | while (<STDIN>) { |
3289 | print; |
3290 | print OUT; |
3291 | } |
3292 | close OUT; |
3293 | |
774d564b |
3294 | =item Got an error from DosAllocMem |
33c8a3fe |
3295 | |
774d564b |
3296 | (P) An error peculiar to OS/2. Most probably you're using an obsolete |
3297 | version of Perl, and this should not happen anyway. |
33c8a3fe |
3298 | |
3299 | =item Malformed PERLLIB_PREFIX |
3300 | |
dc848c6f |
3301 | (F) An error peculiar to OS/2. PERLLIB_PREFIX should be of the form |
33c8a3fe |
3302 | |
3303 | prefix1;prefix2 |
3304 | |
3305 | or |
3306 | |
3307 | prefix1 prefix2 |
3308 | |
dc848c6f |
3309 | with nonempty prefix1 and prefix2. If C<prefix1> is indeed a prefix |
3310 | of a builtin library search path, prefix2 is substituted. The error |
3311 | may appear if components are not found, or are too long. See |
3312 | "PERLLIB_PREFIX" in F<README.os2>. |
33c8a3fe |
3313 | |
3314 | =item PERL_SH_DIR too long |
3315 | |
54310121 |
3316 | (F) An error peculiar to OS/2. PERL_SH_DIR is the directory to find the |
dc848c6f |
3317 | C<sh>-shell in. See "PERL_SH_DIR" in F<README.os2>. |
33c8a3fe |
3318 | |
3319 | =item Process terminated by SIG%s |
3320 | |
3321 | (W) This is a standard message issued by OS/2 applications, while *nix |
dc848c6f |
3322 | applications die in silence. It is considered a feature of the OS/2 |
3323 | port. One can easily disable this by appropriate sighandlers, see |
3324 | L<perlipc/"Signals">. See also "Process terminated by SIGTERM/SIGINT" |
3325 | in F<README.os2>. |
33c8a3fe |
3326 | |
a0d0e21e |
3327 | =back |
3328 | |