Commit | Line | Data |
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a0d0e21e LW |
1 | =head1 NAME |
2 | ||
3 | perldiag - various Perl diagnostics | |
4 | ||
5 | =head1 DESCRIPTION | |
6 | ||
7 | These messages are classified as follows (listed in increasing order of | |
8 | desperation): | |
9 | ||
10 | (W) A warning (optional). | |
11 | (D) A deprecation (optional). | |
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). |
a0d0e21e | 17 | |
748a9306 | 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>. | |
4438c4b7 | 21 | |
748a9306 | 22 | Trappable errors may be trapped using the eval operator. See |
4438c4b7 JH |
23 | L<perlfunc/eval>. In almost all cases, warnings may be selectively |
24 | disabled or promoted to fatal errors using the C<warnings> pragma. | |
25 | See L<warnings>. | |
a0d0e21e LW |
26 | |
27 | Some of these messages are generic. Spots that vary are denoted with a %s, | |
2ba9eb46 | 28 | just as in a printf format. Note that some messages start with a %s! |
10f9c03d CK |
29 | Since the messages are listed in alphabetical order, the symbols |
30 | C<"%(-?@> sort before the letters, while C<[> and C<\> sort after. | |
a0d0e21e LW |
31 | |
32 | =over 4 | |
33 | ||
09bef843 SB |
34 | =item "my sub" not yet implemented |
35 | ||
36 | (F) Lexically scoped subroutines are not yet implemented. Don't try that | |
37 | yet. | |
38 | ||
a0d0e21e LW |
39 | =item "my" variable %s can't be in a package |
40 | ||
41 | (F) Lexically scoped variables aren't in a package, so it doesn't make sense | |
42 | to try to declare one with a package qualifier on the front. Use local() | |
43 | if you want to localize a package variable. | |
44 | ||
9fbbe825 | 45 | =item "my" variable %s masks earlier declaration in same %s |
2ba9eb46 | 46 | |
9fbbe825 GS |
47 | (W) A lexical variable has been redeclared in the current scope or statement, |
48 | effectively eliminating all access to the previous instance. This is almost | |
49 | always a typographical error. Note that the earlier variable will still exist | |
2ba9eb46 | 50 | until the end of the scope or until all closure referents to it are |
51 | destroyed. | |
52 | ||
a0d0e21e LW |
53 | =item "no" not allowed in expression |
54 | ||
55 | (F) The "no" keyword is recognized and executed at compile time, and returns | |
56 | no useful value. See L<perlmod>. | |
57 | ||
58 | =item "use" not allowed in expression | |
59 | ||
60 | (F) The "use" keyword is recognized and executed at compile time, and returns | |
61 | no useful value. See L<perlmod>. | |
62 | ||
f61d411c | 63 | =item '!' allowed only after types %s |
ef54e1a4 | 64 | |
f61d411c JH |
65 | (F) The '!' is allowed in pack() and unpack() only after certain types. |
66 | See L<perlfunc/pack>. | |
ef54e1a4 | 67 | |
17f4a12d | 68 | =item / cannot take a count |
43192e07 IP |
69 | |
70 | (F) You had an unpack template indicating a counted-length string, | |
71 | but you have also specified an explicit size for the string. | |
72 | See L<perlfunc/pack>. | |
73 | ||
17f4a12d | 74 | =item / must be followed by a, A or Z |
43192e07 IP |
75 | |
76 | (F) You had an unpack template indicating a counted-length string, | |
77 | which must be followed by one of the letters a, A or Z | |
78 | to indicate what sort of string is to be unpacked. | |
79 | See L<perlfunc/pack>. | |
80 | ||
17f4a12d | 81 | =item / must be followed by a*, A* or Z* |
43192e07 | 82 | |
437784d6 | 83 | (F) You had a pack template indicating a counted-length string, |
43192e07 IP |
84 | Currently the only things that can have their length counted are a*, A* or Z*. |
85 | See L<perlfunc/pack>. | |
86 | ||
17f4a12d | 87 | =item / must follow a numeric type |
43192e07 IP |
88 | |
89 | (F) You had an unpack template that contained a '#', | |
90 | but this did not follow some numeric unpack specification. | |
91 | See L<perlfunc/pack>. | |
92 | ||
a0d0e21e LW |
93 | =item % may only be used in unpack |
94 | ||
5f05dabc | 95 | (F) You can't pack a string by supplying a checksum, because the |
a0d0e21e LW |
96 | checksumming process loses information, and you can't go the other |
97 | way. See L<perlfunc/unpack>. | |
98 | ||
06387354 NT |
99 | =item Repeat count in pack overflows |
100 | ||
101 | (F) You can't specify a repeat count so large that it overflows | |
102 | your signed integers. See L<perlfunc/pack>. | |
103 | ||
104 | =item Repeat count in unpack overflows | |
105 | ||
106 | (F) You can't specify a repeat count so large that it overflows | |
107 | your signed integers. See L<perlfunc/unpack>. | |
108 | ||
c9f97d15 IZ |
109 | =item /%s/: Unrecognized escape \\%c passed through |
110 | ||
111 | (W) You used a backslash-character combination which is not recognized | |
112 | by Perl. This combination appears in an interpolated variable or a | |
113 | C<'>-delimited regular expression. | |
114 | ||
eb6e2d6f GS |
115 | =item /%s/ should probably be written as "%s" |
116 | ||
117 | (W) You have used a pattern where Perl expected to find a string, | |
437784d6 | 118 | as in the first argument to C<join>. Perl will treat the true |
eb6e2d6f GS |
119 | or false result of matching the pattern against $_ as the string, |
120 | which is probably not what you had in mind. | |
121 | ||
a0d0e21e LW |
122 | =item %s (...) interpreted as function |
123 | ||
124 | (W) You've run afoul of the rule that says that any list operator followed | |
8b1a09fc | 125 | by parentheses turns into a function, with all the list operators arguments |
5f05dabc | 126 | found inside the parentheses. See L<perlop/Terms and List Operators (Leftward)>. |
a0d0e21e | 127 | |
76cd736e GS |
128 | =item %s() called too early to check prototype |
129 | ||
130 | (W) You've called a function that has a prototype before the parser saw a | |
131 | definition or declaration for it, and Perl could not check that the call | |
132 | conforms to the prototype. You need to either add an early prototype | |
133 | declaration for the subroutine in question, or move the subroutine | |
134 | definition ahead of the call to get proper prototype checking. Alternatively, | |
135 | if you are certain that you're calling the function correctly, you may put | |
136 | an ampersand before the name to avoid the warning. See L<perlsub>. | |
137 | ||
a0d0e21e LW |
138 | =item %s argument is not a HASH element |
139 | ||
5f05dabc | 140 | (F) The argument to exists() must be a hash element, such as |
a0d0e21e LW |
141 | |
142 | $foo{$bar} | |
143 | $ref->[12]->{"susie"} | |
144 | ||
5f05dabc | 145 | =item %s argument is not a HASH element or slice |
146 | ||
147 | (F) The argument to delete() must be either a hash element, such as | |
148 | ||
149 | $foo{$bar} | |
150 | $ref->[12]->{"susie"} | |
151 | ||
152 | or a hash slice, such as | |
153 | ||
154 | @foo{$bar, $baz, $xyzzy} | |
155 | @{$ref->[12]}{"susie", "queue"} | |
156 | ||
a0d0e21e LW |
157 | =item %s did not return a true value |
158 | ||
159 | (F) A required (or used) file must return a true value to indicate that | |
160 | it compiled correctly and ran its initialization code correctly. It's | |
161 | traditional to end such a file with a "1;", though any true value would | |
162 | do. See L<perlfunc/require>. | |
163 | ||
164 | =item %s found where operator expected | |
165 | ||
166 | (S) The Perl lexer knows whether to expect a term or an operator. If it | |
167 | sees what it knows to be a term when it was expecting to see an operator, | |
168 | it gives you this warning. Usually it indicates that an operator or | |
169 | delimiter was omitted, such as a semicolon. | |
170 | ||
f86702cc | 171 | =item %s had compilation errors |
a0d0e21e LW |
172 | |
173 | (F) The final summary message when a C<perl -c> fails. | |
174 | ||
f86702cc | 175 | =item %s has too many errors |
a0d0e21e LW |
176 | |
177 | (F) The parser has given up trying to parse the program after 10 errors. | |
178 | Further error messages would likely be uninformative. | |
179 | ||
180 | =item %s matches null string many times | |
181 | ||
182 | (W) The pattern you've specified would be an infinite loop if the | |
183 | regular expression engine didn't specifically check for that. See L<perlre>. | |
184 | ||
185 | =item %s never introduced | |
186 | ||
187 | (S) The symbol in question was declared but somehow went out of scope | |
188 | before it could possibly have been used. | |
189 | ||
09bef843 SB |
190 | =item %s package attribute may clash with future reserved word: %s |
191 | ||
192 | (W) A lowercase attribute name was used that had a package-specific handler. | |
193 | That name might have a meaning to Perl itself some day, even though it | |
194 | doesn't yet. Perhaps you should use a mixed-case attribute name, instead. | |
195 | See L<attributes>. | |
196 | ||
a0d0e21e LW |
197 | =item %s syntax OK |
198 | ||
199 | (F) The final summary message when a C<perl -c> succeeds. | |
200 | ||
f86702cc | 201 | =item %s: Command not found |
cb1a09d0 AD |
202 | |
203 | (A) You've accidentally run your script through B<csh> instead | |
3a52c276 CS |
204 | of Perl. Check the #! line, or manually feed your script into |
205 | Perl yourself. | |
cb1a09d0 | 206 | |
f86702cc | 207 | =item %s: Expression syntax |
cb1a09d0 AD |
208 | |
209 | (A) You've accidentally run your script through B<csh> instead | |
3a52c276 CS |
210 | of Perl. Check the #! line, or manually feed your script into |
211 | Perl yourself. | |
cb1a09d0 | 212 | |
f86702cc | 213 | =item %s: Undefined variable |
cb1a09d0 AD |
214 | |
215 | (A) You've accidentally run your script through B<csh> instead | |
3a52c276 CS |
216 | of Perl. Check the #! line, or manually feed your script into |
217 | Perl yourself. | |
cb1a09d0 AD |
218 | |
219 | =item %s: not found | |
220 | ||
8b1a09fc | 221 | (A) You've accidentally run your script through the Bourne shell |
3a52c276 | 222 | instead of Perl. Check the #! line, or manually feed your script |
cb1a09d0 AD |
223 | into Perl yourself. |
224 | ||
a99e4ac2 GS |
225 | =item (in cleanup) %s |
226 | ||
227 | (W) This prefix usually indicates that a DESTROY() method raised | |
228 | the indicated exception. Since destructors are usually called by | |
229 | the system at arbitrary points during execution, and often a vast | |
230 | number of times, the warning is issued only once for any number | |
231 | of failures that would otherwise result in the same message being | |
232 | repeated. | |
233 | ||
234 | Failure of user callbacks dispatched using the C<G_KEEPERR> flag | |
235 | could also result in this warning. See L<perlcall/G_KEEPERR>. | |
236 | ||
702d120d MG |
237 | =item (Missing semicolon on previous line?) |
238 | ||
239 | (S) This is an educated guess made in conjunction with the message "%s | |
240 | found where operator expected". Don't automatically put a semicolon on | |
241 | the previous line just because you saw this message. | |
242 | ||
a0d0e21e LW |
243 | =item B<-P> not allowed for setuid/setgid script |
244 | ||
245 | (F) The script would have to be opened by the C preprocessor by name, | |
246 | which provides a race condition that breaks security. | |
247 | ||
248 | =item C<-T> and C<-B> not implemented on filehandles | |
249 | ||
250 | (F) Perl can't peek at the stdio buffer of filehandles when it doesn't | |
251 | know about your kind of stdio. You'll have to use a filename instead. | |
252 | ||
08e9d68e DD |
253 | =item C<-p> destination: %s |
254 | ||
255 | (F) An error occurred during the implicit output invoked by the C<-p> | |
256 | command-line switch. (This output goes to STDOUT unless you've | |
257 | redirected it with select().) | |
258 | ||
a5f75d66 AD |
259 | =item 500 Server error |
260 | ||
261 | See Server error. | |
262 | ||
a0d0e21e LW |
263 | =item ?+* follows nothing in regexp |
264 | ||
265 | (F) You started a regular expression with a quantifier. Backslash it | |
266 | if you meant it literally. See L<perlre>. | |
267 | ||
268 | =item @ outside of string | |
269 | ||
2ba9eb46 | 270 | (F) You had a pack template that specified an absolute position outside |
a0d0e21e LW |
271 | the string being unpacked. See L<perlfunc/pack>. |
272 | ||
742c16d1 MJD |
273 | =item <> should be quotes |
274 | ||
275 | (F) You wrote C<require E<lt>fileE<gt>> when you should have written | |
276 | C<require 'file'>. | |
277 | ||
a0d0e21e LW |
278 | =item accept() on closed fd |
279 | ||
280 | (W) You tried to do an accept on a closed socket. Did you forget to check | |
281 | the return value of your socket() call? See L<perlfunc/accept>. | |
282 | ||
283 | =item Allocation too large: %lx | |
284 | ||
54310121 | 285 | (X) You can't allocate more than 64K on an MS-DOS machine. |
55497cff | 286 | |
2ae324a7 | 287 | =item Applying %s to %s will act on scalar(%s) |
288 | ||
2c268ad5 | 289 | (W) The pattern match (//), substitution (s///), and transliteration (tr///) |
2ae324a7 | 290 | operators work on scalar values. If you apply one of them to an array |
291 | or a hash, it will convert the array or hash to a scalar value -- the | |
292 | length of an array, or the population info of a hash -- and then work on | |
293 | that scalar value. This is probably not what you meant to do. See | |
294 | L<perlfunc/grep> and L<perlfunc/map> for alternatives. | |
295 | ||
a0d0e21e LW |
296 | =item Arg too short for msgsnd |
297 | ||
298 | (F) msgsnd() requires a string at least as long as sizeof(long). | |
299 | ||
748a9306 LW |
300 | =item Ambiguous use of %s resolved as %s |
301 | ||
302 | (W)(S) You said something that may not be interpreted the way | |
303 | you thought. Normally it's pretty easy to disambiguate it by supplying | |
5f05dabc | 304 | a missing quote, operator, parenthesis pair or declaration. |
748a9306 | 305 | |
5315574d GS |
306 | =item Ambiguous call resolved as CORE::%s(), qualify as such or use & |
307 | ||
308 | (W) A subroutine you have declared has the same name as a Perl keyword, | |
309 | and you have used the name without qualification for calling one or the | |
310 | other. Perl decided to call the builtin because the subroutine is | |
311 | not imported. | |
312 | ||
313 | To force interpretation as a subroutine call, either put an ampersand | |
314 | before the subroutine name, or qualify the name with its package. | |
315 | Alternatively, you can import the subroutine (or pretend that it's | |
316 | imported with the C<use subs> pragma). | |
317 | ||
318 | To silently interpret it as the Perl operator, use the C<CORE::> prefix | |
319 | on the operator (e.g. C<CORE::log($x)>) or by declaring the subroutine | |
09bef843 SB |
320 | to be an object method (see L<perlsub/"Subroutine Attributes"> |
321 | or L<attributes>). | |
5315574d | 322 | |
a0d0e21e LW |
323 | =item Args must match #! line |
324 | ||
325 | (F) The setuid emulator requires that the arguments Perl was invoked | |
3a52c276 CS |
326 | with match the arguments specified on the #! line. Since some systems |
327 | impose a one-argument limit on the #! line, try combining switches; | |
328 | for example, turn C<-w -U> into C<-wU>. | |
a0d0e21e | 329 | |
f86702cc | 330 | =item Argument "%s" isn't numeric%s |
a0d0e21e LW |
331 | |
332 | (W) The indicated string was fed as an argument to an operator that | |
333 | expected a numeric value instead. If you're fortunate the message | |
334 | will identify which operator was so unfortunate. | |
335 | ||
336 | =item Array @%s missing the @ in argument %d of %s() | |
337 | ||
338 | (D) Really old Perl let you omit the @ on array names in some spots. This | |
339 | is now heavily deprecated. | |
340 | ||
341 | =item assertion botched: %s | |
342 | ||
343 | (P) The malloc package that comes with Perl had an internal failure. | |
344 | ||
345 | =item Assertion failed: file "%s" | |
346 | ||
347 | (P) A general assertion failed. The file in question must be examined. | |
348 | ||
349 | =item Assignment to both a list and a scalar | |
350 | ||
351 | (F) If you assign to a conditional operator, the 2nd and 3rd arguments | |
352 | must either both be scalars or both be lists. Otherwise Perl won't | |
353 | know which context to supply to the right side. | |
354 | ||
355 | =item Attempt to free non-arena SV: 0x%lx | |
356 | ||
357 | (P) All SV objects are supposed to be allocated from arenas that will | |
358 | be garbage collected on exit. An SV was discovered to be outside any | |
359 | of those arenas. | |
360 | ||
54310121 | 361 | =item Attempt to free nonexistent shared string |
bbce6d69 | 362 | |
363 | (P) Perl maintains a reference counted internal table of strings to | |
364 | optimize the storage and access of hash keys and other strings. This | |
365 | indicates someone tried to decrement the reference count of a string | |
366 | that can no longer be found in the table. | |
367 | ||
a0d0e21e LW |
368 | =item Attempt to free temp prematurely |
369 | ||
370 | (W) Mortalized values are supposed to be freed by the free_tmps() | |
371 | routine. This indicates that something else is freeing the SV before | |
372 | the free_tmps() routine gets a chance, which means that the free_tmps() | |
373 | routine will be freeing an unreferenced scalar when it does try to free | |
374 | it. | |
375 | ||
376 | =item Attempt to free unreferenced glob pointers | |
377 | ||
378 | (P) The reference counts got screwed up on symbol aliases. | |
379 | ||
380 | =item Attempt to free unreferenced scalar | |
381 | ||
382 | (W) Perl went to decrement the reference count of a scalar to see if it | |
383 | would go to 0, and discovered that it had already gone to 0 earlier, | |
384 | and should have been freed, and in fact, probably was freed. This | |
385 | could indicate that SvREFCNT_dec() was called too many times, or that | |
386 | SvREFCNT_inc() was called too few times, or that the SV was mortalized | |
387 | when it shouldn't have been, or that memory has been corrupted. | |
388 | ||
dcdda58d GS |
389 | =item Attempt to join self |
390 | ||
391 | (F) You tried to join a thread from within itself, which is an | |
392 | impossible task. You may be joining the wrong thread, or you may | |
393 | need to move the join() to some other thread. | |
394 | ||
84902520 TB |
395 | =item Attempt to pack pointer to temporary value |
396 | ||
397 | (W) You tried to pass a temporary value (like the result of a | |
398 | function, or a computed expression) to the "p" pack() template. This | |
399 | means the result contains a pointer to a location that could become | |
400 | invalid anytime, even before the end of the current statement. Use | |
401 | literals or global values as arguments to the "p" pack() template to | |
402 | avoid this warning. | |
403 | ||
b7a902f4 | 404 | =item Attempt to use reference as lvalue in substr |
405 | ||
406 | (W) You supplied a reference as the first argument to substr() used | |
8b1a09fc | 407 | as an lvalue, which is pretty strange. Perhaps you forgot to |
b7a902f4 | 408 | dereference it first. See L<perlfunc/substr>. |
409 | ||
a0d0e21e LW |
410 | =item Bad arg length for %s, is %d, should be %d |
411 | ||
412 | (F) You passed a buffer of the wrong size to one of msgctl(), semctl() or | |
2ba9eb46 | 413 | shmctl(). In C parlance, the correct sizes are, respectively, |
5f05dabc | 414 | S<sizeof(struct msqid_ds *)>, S<sizeof(struct semid_ds *)>, and |
a0d0e21e LW |
415 | S<sizeof(struct shmid_ds *)>. |
416 | ||
a0d0e21e LW |
417 | =item Bad filehandle: %s |
418 | ||
419 | (F) A symbol was passed to something wanting a filehandle, but the symbol | |
420 | has no filehandle associated with it. Perhaps you didn't do an open(), or | |
421 | did it in another package. | |
422 | ||
423 | =item Bad free() ignored | |
424 | ||
425 | (S) An internal routine called free() on something that had never been | |
33c8a3fe IZ |
426 | malloc()ed in the first place. Mandatory, but can be disabled by |
427 | setting environment variable C<PERL_BADFREE> to 1. | |
428 | ||
429 | This message can be quite often seen with DB_File on systems with | |
430 | "hard" dynamic linking, like C<AIX> and C<OS/2>. It is a bug of | |
431 | C<Berkeley DB> which is left unnoticed if C<DB> uses I<forgiving> | |
432 | system malloc(). | |
a0d0e21e | 433 | |
aa689395 | 434 | =item Bad hash |
435 | ||
436 | (P) One of the internal hash routines was passed a null HV pointer. | |
437 | ||
f1192cee GA |
438 | =item Bad index while coercing array into hash |
439 | ||
6f54a448 GS |
440 | (F) The index looked up in the hash found as the 0'th element of a |
441 | pseudo-hash is not legal. Index values must be at 1 or greater. | |
442 | See L<perlref>. | |
57079c46 | 443 | |
a0d0e21e LW |
444 | =item Bad name after %s:: |
445 | ||
446 | (F) You started to name a symbol by using a package prefix, and then didn't | |
447 | finish the symbol. In particular, you can't interpolate outside of quotes, | |
448 | so | |
449 | ||
450 | $var = 'myvar'; | |
451 | $sym = mypack::$var; | |
452 | ||
453 | is not the same as | |
454 | ||
455 | $var = 'myvar'; | |
456 | $sym = "mypack::$var"; | |
457 | ||
4ad56ec9 IZ |
458 | =item Bad realloc() ignored |
459 | ||
460 | (S) An internal routine called realloc() on something that had never been | |
461 | malloc()ed in the first place. Mandatory, but can be disabled by | |
462 | setting environment variable C<PERL_BADFREE> to 1. | |
463 | ||
a0d0e21e LW |
464 | =item Bad symbol for array |
465 | ||
466 | (P) An internal request asked to add an array entry to something that | |
467 | wasn't a symbol table entry. | |
468 | ||
469 | =item Bad symbol for filehandle | |
470 | ||
471 | (P) An internal request asked to add a filehandle entry to something that | |
472 | wasn't a symbol table entry. | |
473 | ||
474 | =item Bad symbol for hash | |
475 | ||
476 | (P) An internal request asked to add a hash entry to something that | |
477 | wasn't a symbol table entry. | |
478 | ||
8b1a09fc | 479 | =item Badly placed ()'s |
cb1a09d0 AD |
480 | |
481 | (A) You've accidentally run your script through B<csh> instead | |
3a52c276 CS |
482 | of Perl. Check the #! line, or manually feed your script into |
483 | Perl yourself. | |
cb1a09d0 | 484 | |
3fe9a6f1 | 485 | =item Bareword "%s" not allowed while "strict subs" in use |
486 | ||
487 | (F) With "strict subs" in use, a bareword is only allowed as a | |
d98d5fff | 488 | subroutine identifier, in curly brackets or to the left of the "=>" symbol. |
54310121 | 489 | Perhaps you need to predeclare a subroutine? |
3fe9a6f1 | 490 | |
c3e0f903 GS |
491 | =item Bareword "%s" refers to nonexistent package |
492 | ||
493 | (W) You used a qualified bareword of the form C<Foo::>, but | |
494 | the compiler saw no other uses of that namespace before that point. | |
495 | Perhaps you need to predeclare a package? | |
496 | ||
a0d0e21e LW |
497 | =item BEGIN failed--compilation aborted |
498 | ||
499 | (F) An untrapped exception was raised while executing a BEGIN subroutine. | |
500 | Compilation stops immediately and the interpreter is exited. | |
501 | ||
68dc0745 | 502 | =item BEGIN not safe after errors--compilation aborted |
503 | ||
504 | (F) Perl found a C<BEGIN {}> subroutine (or a C<use> directive, which | |
505 | implies a C<BEGIN {}>) after one or more compilation errors had | |
506 | already occurred. Since the intended environment for the C<BEGIN {}> | |
507 | could not be guaranteed (due to the errors), and since subsequent code | |
508 | likely depends on its correct operation, Perl just gave up. | |
509 | ||
252aa082 JH |
510 | =item Binary number > 0b11111111111111111111111111111111 non-portable |
511 | ||
9e24b6e2 JH |
512 | (W) The binary number you specified is larger than 2**32-1 |
513 | (4294967295) and therefore non-portable between systems. See | |
514 | L<perlport> for more on portability concerns. | |
252aa082 | 515 | |
a0d0e21e LW |
516 | =item bind() on closed fd |
517 | ||
518 | (W) You tried to do a bind on a closed socket. Did you forget to check | |
519 | the return value of your socket() call? See L<perlfunc/bind>. | |
520 | ||
c5a0f51a JH |
521 | =item Bit vector size > 32 non-portable |
522 | ||
523 | (W) Using bit vector sizes larger than 32 is non-portable. | |
524 | ||
4633a7c4 LW |
525 | =item Bizarre copy of %s in %s |
526 | ||
527 | (P) Perl detected an attempt to copy an internal value that is not copiable. | |
528 | ||
f675dbe5 CB |
529 | =item Buffer overflow in prime_env_iter: %s |
530 | ||
531 | (W) A warning peculiar to VMS. While Perl was preparing to iterate over | |
532 | %ENV, it encountered a logical name or symbol definition which was too long, | |
533 | so it was truncated to the string shown. | |
534 | ||
a0d0e21e LW |
535 | =item Callback called exit |
536 | ||
537 | (F) A subroutine invoked from an external package via perl_call_sv() | |
538 | exited by calling exit. | |
539 | ||
0a753a76 | 540 | =item Can't "goto" outside a block |
541 | ||
542 | (F) A "goto" statement was executed to jump out of what might look | |
543 | like a block, except that it isn't a proper block. This usually | |
544 | occurs if you tried to jump out of a sort() block or subroutine, which | |
545 | is a no-no. See L<perlfunc/goto>. | |
546 | ||
84902520 TB |
547 | =item Can't "goto" into the middle of a foreach loop |
548 | ||
549 | (F) A "goto" statement was executed to jump into the middle of a | |
550 | foreach loop. You can't get there from here. See L<perlfunc/goto>. | |
551 | ||
a0d0e21e LW |
552 | =item Can't "last" outside a block |
553 | ||
554 | (F) A "last" statement was executed to break out of the current block, | |
555 | except that there's this itty bitty problem called there isn't a | |
556 | current block. Note that an "if" or "else" block doesn't count as a | |
0a753a76 | 557 | "loopish" block, as doesn't a block given to sort(). You can usually double |
558 | the curlies to get the same effect though, because the inner curlies | |
559 | will be considered a block that loops once. See L<perlfunc/last>. | |
a0d0e21e LW |
560 | |
561 | =item Can't "next" outside a block | |
562 | ||
563 | (F) A "next" statement was executed to reiterate the current block, but | |
564 | there isn't a current block. Note that an "if" or "else" block doesn't | |
0a753a76 | 565 | count as a "loopish" block, as doesn't a block given to sort(). You can |
566 | usually double the curlies to get the same effect though, because the inner | |
54310121 | 567 | curlies will be considered a block that loops once. See L<perlfunc/next>. |
a0d0e21e | 568 | |
f675dbe5 CB |
569 | =item Can't read CRTL environ |
570 | ||
571 | (S) A warning peculiar to VMS. Perl tried to read an element of %ENV | |
572 | from the CRTL's internal environment array and discovered the array was | |
573 | missing. You need to figure out where your CRTL misplaced its environ | |
574 | or define F<PERL_ENV_TABLES> (see L<perlvms>) so that environ is not searched. | |
575 | ||
a0d0e21e LW |
576 | =item Can't "redo" outside a block |
577 | ||
578 | (F) A "redo" statement was executed to restart the current block, but | |
579 | there isn't a current block. Note that an "if" or "else" block doesn't | |
0a753a76 | 580 | count as a "loopish" block, as doesn't a block given to sort(). You can |
581 | usually double the curlies to get the same effect though, because the inner | |
54310121 | 582 | curlies will be considered a block that loops once. See L<perlfunc/redo>. |
a0d0e21e LW |
583 | |
584 | =item Can't bless non-reference value | |
585 | ||
586 | (F) Only hard references may be blessed. This is how Perl "enforces" | |
587 | encapsulation of objects. See L<perlobj>. | |
588 | ||
589 | =item Can't break at that line | |
590 | ||
54310121 | 591 | (S) A warning intended to only be printed while running within the debugger, indicating |
a0d0e21e LW |
592 | the line number specified wasn't the location of a statement that could |
593 | be stopped at. | |
594 | ||
595 | =item Can't call method "%s" in empty package "%s" | |
596 | ||
597 | (F) You called a method correctly, and it correctly indicated a package | |
598 | functioning as a class, but that package doesn't have ANYTHING defined | |
599 | in it, let alone methods. See L<perlobj>. | |
600 | ||
601 | =item Can't call method "%s" on unblessed reference | |
602 | ||
54310121 | 603 | (F) A method call must know in what package it's supposed to run. It |
a0d0e21e LW |
604 | ordinarily finds this out from the object reference you supply, but |
605 | you didn't supply an object reference in this case. A reference isn't | |
606 | an object reference until it has been blessed. See L<perlobj>. | |
607 | ||
608 | =item Can't call method "%s" without a package or object reference | |
609 | ||
610 | (F) You used the syntax of a method call, but the slot filled by the | |
611 | object reference or package name contains an expression that returns | |
72b5445b GS |
612 | a defined value which is neither an object reference nor a package name. |
613 | Something like this will reproduce the error: | |
614 | ||
615 | $BADREF = 42; | |
616 | process $BADREF 1,2,3; | |
617 | $BADREF->process(1,2,3); | |
618 | ||
619 | =item Can't call method "%s" on an undefined value | |
620 | ||
621 | (F) You used the syntax of a method call, but the slot filled by the | |
622 | object reference or package name contains an undefined value. | |
a0d0e21e LW |
623 | Something like this will reproduce the error: |
624 | ||
625 | $BADREF = undef; | |
626 | process $BADREF 1,2,3; | |
627 | $BADREF->process(1,2,3); | |
628 | ||
629 | =item Can't chdir to %s | |
630 | ||
631 | (F) You called C<perl -x/foo/bar>, but C</foo/bar> is not a directory | |
632 | that you can chdir to, possibly because it doesn't exist. | |
633 | ||
104d25b7 JH |
634 | =item Can't check filesystem of script "%s" |
635 | ||
636 | (P) For some reason you can't check the filesystem of the script for nosuid. | |
637 | ||
a0d0e21e LW |
638 | =item Can't coerce %s to integer in %s |
639 | ||
640 | (F) Certain types of SVs, in particular real symbol table entries | |
55497cff | 641 | (typeglobs), can't be forced to stop being what they are. So you can't |
a0d0e21e LW |
642 | say things like: |
643 | ||
644 | *foo += 1; | |
645 | ||
646 | You CAN say | |
647 | ||
648 | $foo = *foo; | |
649 | $foo += 1; | |
650 | ||
651 | but then $foo no longer contains a glob. | |
652 | ||
653 | =item Can't coerce %s to number in %s | |
654 | ||
655 | (F) Certain types of SVs, in particular real symbol table entries | |
55497cff | 656 | (typeglobs), can't be forced to stop being what they are. |
a0d0e21e LW |
657 | |
658 | =item Can't coerce %s to string in %s | |
659 | ||
660 | (F) Certain types of SVs, in particular real symbol table entries | |
55497cff | 661 | (typeglobs), can't be forced to stop being what they are. |
a0d0e21e | 662 | |
57079c46 GA |
663 | =item Can't coerce array into hash |
664 | ||
665 | (F) You used an array where a hash was expected, but the array has no | |
666 | information on how to map from keys to array indices. You can do that | |
667 | only with arrays that have a hash reference at index 0. | |
668 | ||
a0d0e21e LW |
669 | =item Can't create pipe mailbox |
670 | ||
748a9306 LW |
671 | (P) An error peculiar to VMS. The process is suffering from exhausted quotas |
672 | or other plumbing problems. | |
a0d0e21e LW |
673 | |
674 | =item Can't declare %s in my | |
675 | ||
5f05dabc | 676 | (F) Only scalar, array, and hash variables may be declared as lexical variables. |
a0d0e21e LW |
677 | They must have ordinary identifiers as names. |
678 | ||
679 | =item Can't do inplace edit on %s: %s | |
680 | ||
681 | (S) The creation of the new file failed for the indicated reason. | |
682 | ||
54310121 | 683 | =item Can't do inplace edit without backup |
a0d0e21e | 684 | |
54310121 | 685 | (F) You're on a system such as MS-DOS that gets confused if you try reading |
3fe9a6f1 | 686 | from a deleted (but still opened) file. You have to say C<-i.bak>, or some |
a0d0e21e LW |
687 | such. |
688 | ||
10f9c03d | 689 | =item Can't do inplace edit: %s would not be unique |
a0d0e21e | 690 | |
10f9c03d CK |
691 | (S) Your filesystem does not support filenames longer than 14 |
692 | characters and Perl was unable to create a unique filename during | |
693 | inplace editing with the B<-i> switch. The file was ignored. | |
a0d0e21e LW |
694 | |
695 | =item Can't do inplace edit: %s is not a regular file | |
696 | ||
697 | (S) You tried to use the B<-i> switch on a special file, such as a file in | |
698 | /dev, or a FIFO. The file was ignored. | |
699 | ||
700 | =item Can't do setegid! | |
701 | ||
702 | (P) The setegid() call failed for some reason in the setuid emulator | |
703 | of suidperl. | |
704 | ||
705 | =item Can't do seteuid! | |
706 | ||
707 | (P) The setuid emulator of suidperl failed for some reason. | |
708 | ||
709 | =item Can't do setuid | |
710 | ||
711 | (F) This typically means that ordinary perl tried to exec suidperl to | |
712 | do setuid emulation, but couldn't exec it. It looks for a name of the | |
713 | form sperl5.000 in the same directory that the perl executable resides | |
714 | under the name perl5.000, typically /usr/local/bin on Unix machines. | |
715 | If the file is there, check the execute permissions. If it isn't, ask | |
716 | your sysadmin why he and/or she removed it. | |
717 | ||
718 | =item Can't do waitpid with flags | |
719 | ||
720 | (F) This machine doesn't have either waitpid() or wait4(), so only waitpid() | |
721 | without flags is emulated. | |
722 | ||
8b1a09fc | 723 | =item Can't do {n,m} with n E<gt> m |
a0d0e21e LW |
724 | |
725 | (F) Minima must be less than or equal to maxima. If you really want | |
726 | your regexp to match something 0 times, just put {0}. See L<perlre>. | |
727 | ||
728 | =item Can't emulate -%s on #! line | |
729 | ||
730 | (F) The #! line specifies a switch that doesn't make sense at this point. | |
731 | For example, it'd be kind of silly to put a B<-x> on the #! line. | |
732 | ||
733 | =item Can't exec "%s": %s | |
734 | ||
5f05dabc | 735 | (W) An system(), exec(), or piped open call could not execute the named |
a0d0e21e LW |
736 | program for the indicated reason. Typical reasons include: the permissions |
737 | were wrong on the file, the file wasn't found in C<$ENV{PATH}>, the | |
738 | executable in question was compiled for another architecture, or the | |
739 | #! line in a script points to an interpreter that can't be run for | |
740 | similar reasons. (Or maybe your system doesn't support #! at all.) | |
741 | ||
742 | =item Can't exec %s | |
743 | ||
744 | (F) Perl was trying to execute the indicated program for you because that's | |
745 | what the #! line said. If that's not what you wanted, you may need to | |
746 | mention "perl" on the #! line somewhere. | |
747 | ||
748 | =item Can't execute %s | |
749 | ||
2a92aaa0 GS |
750 | (F) You used the B<-S> switch, but the copies of the script to execute found |
751 | in the PATH did not have correct permissions. | |
752 | ||
753 | =item Can't find %s on PATH, '.' not in PATH | |
754 | ||
755 | (F) You used the B<-S> switch, but the script to execute could not be found | |
756 | in the PATH, or at least not with the correct permissions. The script | |
757 | exists in the current directory, but PATH prohibits running it. | |
758 | ||
759 | =item Can't find %s on PATH | |
760 | ||
a0d0e21e | 761 | (F) You used the B<-S> switch, but the script to execute could not be found |
2a92aaa0 | 762 | in the PATH. |
a0d0e21e LW |
763 | |
764 | =item Can't find label %s | |
765 | ||
766 | (F) You said to goto a label that isn't mentioned anywhere that it's possible | |
767 | for us to go to. See L<perlfunc/goto>. | |
768 | ||
769 | =item Can't find string terminator %s anywhere before EOF | |
770 | ||
771 | (F) Perl strings can stretch over multiple lines. This message means that | |
5f05dabc | 772 | the closing delimiter was omitted. Because bracketed quotes count nesting |
a0d0e21e LW |
773 | levels, the following is missing its final parenthesis: |
774 | ||
fb73857a | 775 | print q(The character '(' starts a side comment.); |
776 | ||
777 | If you're getting this error from a here-document, you may have | |
778 | included unseen whitespace before or after your closing tag. A good | |
779 | programmer's editor will have a way to help you find these characters. | |
a0d0e21e LW |
780 | |
781 | =item Can't fork | |
782 | ||
783 | (F) A fatal error occurred while trying to fork while opening a pipeline. | |
784 | ||
748a9306 LW |
785 | =item Can't get filespec - stale stat buffer? |
786 | ||
787 | (S) A warning peculiar to VMS. This arises because of the difference between | |
788 | access checks under VMS and under the Unix model Perl assumes. Under VMS, | |
789 | access checks are done by filename, rather than by bits in the stat buffer, so | |
790 | that ACLs and other protections can be taken into account. Unfortunately, Perl | |
791 | assumes that the stat buffer contains all the necessary information, and passes | |
792 | it, instead of the filespec, to the access checking routine. It will try to | |
793 | retrieve the filespec using the device name and FID present in the stat buffer, | |
794 | but this works only if you haven't made a subsequent call to the CRTL stat() | |
5f05dabc | 795 | routine, because the device name is overwritten with each call. If this warning |
748a9306 LW |
796 | appears, the name lookup failed, and the access checking routine gave up and |
797 | returned FALSE, just to be conservative. (Note: The access checking routine | |
798 | knows about the Perl C<stat> operator and file tests, so you shouldn't ever | |
799 | see this warning in response to a Perl command; it arises only if some internal | |
800 | code takes stat buffers lightly.) | |
801 | ||
a0d0e21e LW |
802 | =item Can't get pipe mailbox device name |
803 | ||
748a9306 LW |
804 | (P) An error peculiar to VMS. After creating a mailbox to act as a pipe, Perl |
805 | can't retrieve its name for later use. | |
a0d0e21e LW |
806 | |
807 | =item Can't get SYSGEN parameter value for MAXBUF | |
808 | ||
748a9306 LW |
809 | (P) An error peculiar to VMS. Perl asked $GETSYI how big you want your |
810 | mailbox buffers to be, and didn't get an answer. | |
a0d0e21e LW |
811 | |
812 | =item Can't goto subroutine outside a subroutine | |
813 | ||
814 | (F) The deeply magical "goto subroutine" call can only replace one subroutine | |
815 | call for another. It can't manufacture one out of whole cloth. In general | |
5f05dabc | 816 | you should be calling it out of only an AUTOLOAD routine anyway. See |
a0d0e21e LW |
817 | L<perlfunc/goto>. |
818 | ||
b150fb22 RH |
819 | =item Can't goto subroutine from an eval-string |
820 | ||
821 | (F) The "goto subroutine" call can't be used to jump out of an eval "string". | |
822 | (You can use it to jump out of an eval {BLOCK}, but you probably don't want to.) | |
823 | ||
706a304b | 824 | =item Can't localize through a reference |
4633a7c4 | 825 | |
706a304b SM |
826 | (F) You said something like C<local $$ref>, which Perl can't currently |
827 | handle, because when it goes to restore the old value of whatever $ref | |
828 | pointed to after the scope of the local() is finished, it can't be | |
829 | sure that $ref will still be a reference. | |
4633a7c4 | 830 | |
748a9306 LW |
831 | =item Can't localize lexical variable %s |
832 | ||
2ba9eb46 | 833 | (F) You used local on a variable name that was previously declared as a |
748a9306 LW |
834 | lexical variable using "my". This is not allowed. If you want to |
835 | localize a package variable of the same name, qualify it with the | |
836 | package name. | |
837 | ||
0ebe0038 SM |
838 | =item Can't localize pseudo-hash element |
839 | ||
840 | (F) You said something like C<local $ar-E<gt>{'key'}>, where $ar is | |
841 | a reference to a pseudo-hash. That hasn't been implemented yet, but | |
842 | you can get a similar effect by localizing the corresponding array | |
843 | element directly -- C<local $ar-E<gt>[$ar-E<gt>[0]{'key'}]>. | |
844 | ||
4727527e IZ |
845 | =item Can't locate auto/%s.al in @INC |
846 | ||
847 | (F) A function (or method) was called in a package which allows autoload, | |
848 | but there is no function to autoload. Most probable causes are a misprint | |
849 | in a function/method name or a failure to C<AutoSplit> the file, say, by | |
850 | doing C<make install>. | |
851 | ||
ec889f3a GS |
852 | =item Can't locate %s |
853 | ||
854 | (F) You said to C<do> (or C<require>, or C<use>) a file that couldn't be | |
855 | found. Perl looks for the file in all the locations mentioned in @INC, | |
856 | unless the file name included the full path to the file. Perhaps you need | |
857 | to set the PERL5LIB or PERL5OPT environment variable to say where the extra | |
858 | library is, or maybe the script needs to add the library name to @INC. Or | |
859 | maybe you just misspelled the name of the file. See L<perlfunc/require> | |
860 | and L<lib>. | |
a0d0e21e LW |
861 | |
862 | =item Can't locate object method "%s" via package "%s" | |
863 | ||
864 | (F) You called a method correctly, and it correctly indicated a package | |
865 | functioning as a class, but that package doesn't define that particular | |
2ba9eb46 | 866 | method, nor does any of its base classes. See L<perlobj>. |
a0d0e21e LW |
867 | |
868 | =item Can't locate package %s for @%s::ISA | |
869 | ||
870 | (W) The @ISA array contained the name of another package that doesn't seem | |
871 | to exist. | |
872 | ||
3e3baf6d TB |
873 | =item Can't make list assignment to \%ENV on this system |
874 | ||
875 | (F) List assignment to %ENV is not supported on some systems, notably VMS. | |
876 | ||
a0d0e21e LW |
877 | =item Can't modify %s in %s |
878 | ||
879 | (F) You aren't allowed to assign to the item indicated, or otherwise try to | |
5f05dabc | 880 | change it, such as with an auto-increment. |
a0d0e21e | 881 | |
cd06dffe GS |
882 | =item Can't modify non-lvalue subroutine call |
883 | ||
437784d6 GS |
884 | (F) Subroutines meant to be used in lvalue context should be declared as |
885 | such, see L<perlsub/"Lvalue subroutines">. | |
cd06dffe | 886 | |
54310121 | 887 | =item Can't modify nonexistent substring |
a0d0e21e LW |
888 | |
889 | (P) The internal routine that does assignment to a substr() was handed | |
890 | a NULL. | |
891 | ||
5f05dabc | 892 | =item Can't msgrcv to read-only var |
a0d0e21e | 893 | |
5f05dabc | 894 | (F) The target of a msgrcv must be modifiable to be used as a receive |
a0d0e21e LW |
895 | buffer. |
896 | ||
897 | =item Can't open %s: %s | |
898 | ||
08e9d68e DD |
899 | (S) The implicit opening of a file through use of the C<E<lt>E<gt>> |
900 | filehandle, either implicitly under the C<-n> or C<-p> command-line | |
901 | switches, or explicitly, failed for the indicated reason. Usually this | |
902 | is because you don't have read permission for a file which you named | |
903 | on the command line. | |
a0d0e21e LW |
904 | |
905 | =item Can't open bidirectional pipe | |
906 | ||
907 | (W) You tried to say C<open(CMD, "|cmd|")>, which is not supported. You can | |
908 | try any of several modules in the Perl library to do this, such as | |
7e1af8bc | 909 | IPC::Open2. Alternately, direct the pipe's output to a file using "E<gt>", |
a0d0e21e LW |
910 | and then read it in under a different file handle. |
911 | ||
748a9306 LW |
912 | =item Can't open error file %s as stderr |
913 | ||
914 | (F) An error peculiar to VMS. Perl does its own command line redirection, and | |
8b1a09fc | 915 | couldn't open the file specified after '2E<gt>' or '2E<gt>E<gt>' on the |
916 | command line for writing. | |
748a9306 LW |
917 | |
918 | =item Can't open input file %s as stdin | |
919 | ||
920 | (F) An error peculiar to VMS. Perl does its own command line redirection, and | |
8b1a09fc | 921 | couldn't open the file specified after 'E<lt>' on the command line for reading. |
748a9306 LW |
922 | |
923 | =item Can't open output file %s as stdout | |
924 | ||
925 | (F) An error peculiar to VMS. Perl does its own command line redirection, and | |
8b1a09fc | 926 | couldn't open the file specified after 'E<gt>' or 'E<gt>E<gt>' on the command |
927 | line for writing. | |
748a9306 LW |
928 | |
929 | =item Can't open output pipe (name: %s) | |
930 | ||
931 | (P) An error peculiar to VMS. Perl does its own command line redirection, and | |
932 | couldn't open the pipe into which to send data destined for stdout. | |
933 | ||
a0d0e21e LW |
934 | =item Can't open perl script "%s": %s |
935 | ||
936 | (F) The script you specified can't be opened for the indicated reason. | |
937 | ||
7bac28a0 | 938 | =item Can't redefine active sort subroutine %s |
939 | ||
940 | (F) Perl optimizes the internal handling of sort subroutines and keeps | |
941 | pointers into them. You tried to redefine one such sort subroutine when it | |
942 | was currently active, which is not allowed. If you really want to do | |
943 | this, you should write C<sort { &func } @x> instead of C<sort func @x>. | |
944 | ||
10f9c03d CK |
945 | =item Can't remove %s: %s, skipping file |
946 | ||
947 | (S) You requested an inplace edit without creating a backup file. Perl | |
948 | was unable to remove the original file to replace it with the modified | |
949 | file. The file was left unmodified. | |
950 | ||
a0d0e21e LW |
951 | =item Can't rename %s to %s: %s, skipping file |
952 | ||
10f9c03d CK |
953 | (S) The rename done by the B<-i> switch failed for some reason, |
954 | probably because you don't have write permission to the directory. | |
a0d0e21e | 955 | |
748a9306 LW |
956 | =item Can't reopen input pipe (name: %s) in binary mode |
957 | ||
958 | (P) An error peculiar to VMS. Perl thought stdin was a pipe, and tried to | |
959 | reopen it to accept binary data. Alas, it failed. | |
960 | ||
a0d0e21e LW |
961 | =item Can't reswap uid and euid |
962 | ||
963 | (P) The setreuid() call failed for some reason in the setuid emulator | |
964 | of suidperl. | |
965 | ||
966 | =item Can't return outside a subroutine | |
967 | ||
968 | (F) The return statement was executed in mainline code, that is, where | |
969 | there was no subroutine call to return out of. See L<perlsub>. | |
970 | ||
cd06dffe GS |
971 | =item Can't return %s from lvalue subroutine |
972 | ||
973 | (F) Perl detected an attempt to return illegal lvalues (such | |
974 | as temporary or readonly values) from a subroutine used as an lvalue. | |
975 | This is not allowed. | |
976 | ||
a0d0e21e LW |
977 | =item Can't stat script "%s" |
978 | ||
979 | (P) For some reason you can't fstat() the script even though you have | |
980 | it open already. Bizarre. | |
981 | ||
982 | =item Can't swap uid and euid | |
983 | ||
984 | (P) The setreuid() call failed for some reason in the setuid emulator | |
985 | of suidperl. | |
986 | ||
987 | =item Can't take log of %g | |
988 | ||
fb73857a | 989 | (F) For ordinary real numbers, you can't take the logarithm of a |
990 | negative number or zero. There's a Math::Complex package that comes | |
991 | standard with Perl, though, if you really want to do that for | |
992 | the negative numbers. | |
a0d0e21e LW |
993 | |
994 | =item Can't take sqrt of %g | |
995 | ||
996 | (F) For ordinary real numbers, you can't take the square root of a | |
fb73857a | 997 | negative number. There's a Math::Complex package that comes standard |
998 | with Perl, though, if you really want to do that. | |
a0d0e21e LW |
999 | |
1000 | =item Can't undef active subroutine | |
1001 | ||
1002 | (F) You can't undefine a routine that's currently running. You can, | |
1003 | however, redefine it while it's running, and you can even undef the | |
1004 | redefined subroutine while the old routine is running. Go figure. | |
1005 | ||
1006 | =item Can't unshift | |
1007 | ||
1008 | (F) You tried to unshift an "unreal" array that can't be unshifted, such | |
1009 | as the main Perl stack. | |
1010 | ||
1011 | =item Can't upgrade that kind of scalar | |
1012 | ||
1013 | (P) The internal sv_upgrade routine adds "members" to an SV, making | |
1014 | it into a more specialized kind of SV. The top several SV types are | |
1015 | so specialized, however, that they cannot be interconverted. This | |
1016 | message indicates that such a conversion was attempted. | |
1017 | ||
1018 | =item Can't upgrade to undef | |
1019 | ||
1020 | (P) The undefined SV is the bottom of the totem pole, in the scheme | |
1021 | of upgradability. Upgrading to undef indicates an error in the | |
1022 | code calling sv_upgrade. | |
1023 | ||
1d2dff63 GS |
1024 | =item Can't use %%! because Errno.pm is not available |
1025 | ||
1026 | (F) The first time the %! hash is used, perl automatically loads the | |
1027 | Errno.pm module. The Errno module is expected to tie the %! hash to | |
1028 | provide symbolic names for C<$!> errno values. | |
1029 | ||
c07a80fd | 1030 | =item Can't use "my %s" in sort comparison |
1031 | ||
1032 | (F) The global variables $a and $b are reserved for sort comparisons. | |
8b1a09fc | 1033 | You mentioned $a or $b in the same line as the E<lt>=E<gt> or cmp operator, |
c07a80fd | 1034 | and the variable had earlier been declared as a lexical variable. |
1035 | Either qualify the sort variable with the package name, or rename the | |
1036 | lexical variable. | |
1037 | ||
e9fa98b2 HS |
1038 | =item Bad evalled substitution pattern |
1039 | ||
1040 | (F) You've used the /e switch to evaluate the replacement for a | |
1041 | substitution, but perl found a syntax error in the code to evaluate, | |
1042 | most likely an unexpected right brace '}'. | |
1043 | ||
a0d0e21e LW |
1044 | =item Can't use %s for loop variable |
1045 | ||
1046 | (F) Only a simple scalar variable may be used as a loop variable on a foreach. | |
1047 | ||
1048 | =item Can't use %s ref as %s ref | |
1049 | ||
1050 | (F) You've mixed up your reference types. You have to dereference a | |
1051 | reference of the type needed. You can use the ref() function to | |
1052 | test the type of the reference, if need be. | |
1053 | ||
748a9306 LW |
1054 | =item Can't use \1 to mean $1 in expression |
1055 | ||
1056 | (W) In an ordinary expression, backslash is a unary operator that creates | |
1057 | a reference to its argument. The use of backslash to indicate a backreference | |
5f05dabc | 1058 | to a matched substring is valid only as part of a regular expression pattern. |
748a9306 LW |
1059 | Trying to do this in ordinary Perl code produces a value that prints |
1060 | out looking like SCALAR(0xdecaf). Use the $1 form instead. | |
1061 | ||
44a8e56a | 1062 | =item Can't use bareword ("%s") as %s ref while \"strict refs\" in use |
1063 | ||
1064 | (F) Only hard references are allowed by "strict refs". Symbolic references | |
1065 | are disallowed. See L<perlref>. | |
1066 | ||
748a9306 | 1067 | =item Can't use string ("%s") as %s ref while "strict refs" in use |
a0d0e21e LW |
1068 | |
1069 | (F) Only hard references are allowed by "strict refs". Symbolic references | |
1070 | are disallowed. See L<perlref>. | |
1071 | ||
1072 | =item Can't use an undefined value as %s reference | |
1073 | ||
1074 | (F) A value used as either a hard reference or a symbolic reference must | |
54310121 | 1075 | be a defined value. This helps to delurk some insidious errors. |
a0d0e21e | 1076 | |
a0d0e21e LW |
1077 | =item Can't use global %s in "my" |
1078 | ||
1079 | (F) You tried to declare a magical variable as a lexical variable. This is | |
5f05dabc | 1080 | not allowed, because the magic can be tied to only one location (namely |
a0d0e21e LW |
1081 | the global variable) and it would be incredibly confusing to have |
1082 | variables in your program that looked like magical variables but | |
1083 | weren't. | |
1084 | ||
748a9306 LW |
1085 | =item Can't use subscript on %s |
1086 | ||
1087 | (F) The compiler tried to interpret a bracketed expression as a | |
1088 | subscript. But to the left of the brackets was an expression that | |
1089 | didn't look like an array reference, or anything else subscriptable. | |
1090 | ||
810b8aa5 GS |
1091 | =item Can't weaken a nonreference |
1092 | ||
1093 | (F) You attempted to weaken something that was not a reference. Only | |
1094 | references can be weakened. | |
1095 | ||
5f05dabc | 1096 | =item Can't x= to read-only value |
a0d0e21e LW |
1097 | |
1098 | (F) You tried to repeat a constant value (often the undefined value) with | |
1099 | an assignment operator, which implies modifying the value itself. | |
1100 | Perhaps you need to copy the value to a temporary, and repeat that. | |
1101 | ||
3f4520fe | 1102 | =item Can't find an opnumber for "%s" |
b6c543e3 IZ |
1103 | |
1104 | (F) A string of a form C<CORE::word> was given to prototype(), but | |
1105 | there is no builtin with the name C<word>. | |
1106 | ||
3f4520fe | 1107 | =item Can't resolve method `%s' overloading `%s' in package `%s' |
e7ea3e70 IZ |
1108 | |
1109 | (F|P) Error resolving overloading specified by a method name (as | |
1110 | opposed to a subroutine reference): no such method callable via the | |
1111 | package. If method name is C<???>, this is an internal error. | |
1112 | ||
b8c5462f | 1113 | =item Character class [:%s:] unknown |
4599a1de | 1114 | |
b8c5462f | 1115 | (F) The class in the character class [: :] syntax is unknown. |
437784d6 | 1116 | See L<perlre>. |
4599a1de | 1117 | |
b8c5462f JH |
1118 | =item Character class syntax [%s] belongs inside character classes |
1119 | ||
1120 | (W) The character class constructs [: :], [= =], and [. .] go | |
644a2880 | 1121 | I<inside> character classes, the [] are part of the construct, |
437784d6 GS |
1122 | for example: /[012[:alpha:]345]/. Note that [= =] and [. .] |
1123 | are not currently implemented; they are simply placeholders for | |
1124 | future extensions. | |
b8c5462f | 1125 | |
644a2880 | 1126 | =item Character class syntax [. .] is reserved for future extensions |
4599a1de JH |
1127 | |
1128 | (W) Within regular expression character classes ([]) the syntax beginning | |
b8c5462f | 1129 | with "[." and ending with ".]" is reserved for future extensions. |
4599a1de JH |
1130 | If you need to represent those character sequences inside a regular |
1131 | expression character class, just quote the square brackets with the | |
b8c5462f | 1132 | backslash: "\[." and ".\]". |
4599a1de JH |
1133 | |
1134 | =item Character class syntax [= =] is reserved for future extensions | |
1135 | ||
1136 | (W) Within regular expression character classes ([]) the syntax | |
1137 | beginning with "[=" and ending with "=]" is reserved for future extensions. | |
1138 | If you need to represent those character sequences inside a regular | |
1139 | expression character class, just quote the square brackets with the | |
1140 | backslash: "\[=" and "=\]". | |
1141 | ||
a0d0e21e LW |
1142 | =item chmod: mode argument is missing initial 0 |
1143 | ||
1144 | (W) A novice will sometimes say | |
1145 | ||
1146 | chmod 777, $filename | |
1147 | ||
1148 | not realizing that 777 will be interpreted as a decimal number, equivalent | |
1149 | to 01411. Octal constants are introduced with a leading 0 in Perl, as in C. | |
1150 | ||
8b1a09fc | 1151 | =item Close on unopened file E<lt>%sE<gt> |
a0d0e21e LW |
1152 | |
1153 | (W) You tried to close a filehandle that was never opened. | |
1154 | ||
7a2e2cd6 | 1155 | =item Compilation failed in require |
1156 | ||
1157 | (F) Perl could not compile a file specified in a C<require> statement. | |
1158 | Perl uses this generic message when none of the errors that it encountered | |
1159 | were severe enough to halt compilation immediately. | |
1160 | ||
c3464db5 DD |
1161 | =item Complex regular subexpression recursion limit (%d) exceeded |
1162 | ||
1163 | (W) The regular expression engine uses recursion in complex situations | |
1164 | where back-tracking is required. Recursion depth is limited to 32766, | |
1165 | or perhaps less in architectures where the stack cannot grow | |
1166 | arbitrarily. ("Simple" and "medium" situations are handled without | |
1167 | recursion and are not subject to a limit.) Try shortening the string | |
1168 | under examination; looping in Perl code (e.g. with C<while>) rather | |
1169 | than in the regular expression engine; or rewriting the regular | |
1170 | expression so that it is simpler or backtracks less. (See L<perlbook> | |
1171 | for information on I<Mastering Regular Expressions>.) | |
1172 | ||
a0d0e21e LW |
1173 | =item connect() on closed fd |
1174 | ||
1175 | (W) You tried to do a connect on a closed socket. Did you forget to check | |
1176 | the return value of your socket() call? See L<perlfunc/connect>. | |
1177 | ||
779c5bc9 GS |
1178 | =item Constant is not %s reference |
1179 | ||
1180 | (F) A constant value (perhaps declared using the C<use constant> pragma) | |
1181 | is being dereferenced, but it amounts to the wrong type of reference. The | |
1182 | message indicates the type of reference that was expected. This usually | |
1183 | indicates a syntax error in dereferencing the constant value. | |
1184 | See L<perlsub/"Constant Functions"> and L<constant>. | |
1185 | ||
4cee8e80 CS |
1186 | =item Constant subroutine %s redefined |
1187 | ||
1188 | (S) You redefined a subroutine which had previously been eligible for | |
1189 | inlining. See L<perlsub/"Constant Functions"> for commentary and | |
1190 | workarounds. | |
1191 | ||
9607fc9c | 1192 | =item Constant subroutine %s undefined |
1193 | ||
1194 | (S) You undefined a subroutine which had previously been eligible for | |
1195 | inlining. See L<perlsub/"Constant Functions"> for commentary and | |
1196 | workarounds. | |
1197 | ||
423cee85 JH |
1198 | =item constant(%s): %%^H is not localized |
1199 | ||
1200 | (F) When setting compile-time-lexicalized hash %^H one should set the | |
1201 | corresponding bit of $^H as well. | |
1202 | ||
1203 | =item constant(%s): %s | |
1204 | ||
1205 | (F) Compile-time-substitutions (such as overloaded constants and | |
1206 | character names) were not correctly set up. | |
1207 | ||
e7ea3e70 IZ |
1208 | =item Copy method did not return a reference |
1209 | ||
1210 | (F) The method which overloads "=" is buggy. See L<overload/Copy Constructor>. | |
1211 | ||
a0d0e21e LW |
1212 | =item Corrupt malloc ptr 0x%lx at 0x%lx |
1213 | ||
1214 | (P) The malloc package that comes with Perl had an internal failure. | |
1215 | ||
1216 | =item corrupted regexp pointers | |
1217 | ||
1218 | (P) The regular expression engine got confused by what the regular | |
1219 | expression compiler gave it. | |
1220 | ||
1221 | =item corrupted regexp program | |
1222 | ||
1223 | (P) The regular expression engine got passed a regexp program without | |
1224 | a valid magic number. | |
1225 | ||
1226 | =item Deep recursion on subroutine "%s" | |
1227 | ||
1228 | (W) This subroutine has called itself (directly or indirectly) 100 | |
3e3baf6d | 1229 | times more than it has returned. This probably indicates an infinite |
a0d0e21e LW |
1230 | recursion, unless you're writing strange benchmark programs, in which |
1231 | case it indicates something else. | |
1232 | ||
f10b0346 | 1233 | =item defined(@array) is deprecated |
69794302 MJD |
1234 | |
1235 | (D) defined() is not usually useful on arrays because it checks for an | |
1236 | undefined I<scalar> value. If you want to see if the array is empty, | |
1237 | just use C<if (@array) { # not empty }> for example. | |
1238 | ||
f10b0346 | 1239 | =item defined(%hash) is deprecated |
69794302 MJD |
1240 | |
1241 | (D) defined() is not usually useful on hashes because it checks for an | |
1242 | undefined I<scalar> value. If you want to see if the hash is empty, | |
1243 | just use C<if (%hash) { # not empty }> for example. | |
1244 | ||
fc36a67e | 1245 | =item Delimiter for here document is too long |
1246 | ||
1247 | (F) In a here document construct like C<E<lt>E<lt>FOO>, the label | |
1248 | C<FOO> is too long for Perl to handle. You have to be seriously | |
1249 | twisted to write code that triggers this error. | |
1250 | ||
3cdd684c TP |
1251 | =item Did not produce a valid header |
1252 | ||
1253 | See Server error. | |
1254 | ||
4633a7c4 LW |
1255 | =item Did you mean &%s instead? |
1256 | ||
1257 | (W) You probably referred to an imported subroutine &FOO as $FOO or some such. | |
1258 | ||
748a9306 | 1259 | =item Did you mean $ or @ instead of %? |
a0d0e21e | 1260 | |
748a9306 LW |
1261 | (W) You probably said %hash{$key} when you meant $hash{$key} or @hash{@keys}. |
1262 | On the other hand, maybe you just meant %hash and got carried away. | |
1263 | ||
7e1af8bc | 1264 | =item Died |
5f05dabc | 1265 | |
1266 | (F) You passed die() an empty string (the equivalent of C<die "">) or | |
1267 | you called it with no args and both C<$@> and C<$_> were empty. | |
1268 | ||
54310121 | 1269 | =item Do you need to predeclare %s? |
748a9306 LW |
1270 | |
1271 | (S) This is an educated guess made in conjunction with the message "%s | |
1272 | found where operator expected". It often means a subroutine or module | |
1273 | name is being referenced that hasn't been declared yet. This may be | |
1274 | because of ordering problems in your file, or because of a missing | |
1275 | "sub", "package", "require", or "use" statement. If you're | |
1276 | referencing something that isn't defined yet, you don't actually have | |
1277 | to define the subroutine or package before the current location. You | |
1278 | can use an empty "sub foo;" or "package FOO;" to enter a "forward" | |
1279 | declaration. | |
a0d0e21e | 1280 | |
3cdd684c TP |
1281 | =item Document contains no data |
1282 | ||
1283 | See Server error. | |
1284 | ||
a0d0e21e LW |
1285 | =item Don't know how to handle magic of type '%s' |
1286 | ||
1287 | (P) The internal handling of magical variables has been cursed. | |
1288 | ||
1289 | =item do_study: out of memory | |
1290 | ||
1291 | (P) This should have been caught by safemalloc() instead. | |
1292 | ||
1293 | =item Duplicate free() ignored | |
1294 | ||
1295 | (S) An internal routine called free() on something that had already | |
1296 | been freed. | |
1297 | ||
4633a7c4 LW |
1298 | =item elseif should be elsif |
1299 | ||
1300 | (S) There is no keyword "elseif" in Perl because Larry thinks it's | |
1301 | ugly. Your code will be interpreted as an attempt to call a method | |
1302 | named "elseif" for the class returned by the following block. This is | |
1303 | unlikely to be what you want. | |
1304 | ||
a0d0e21e LW |
1305 | =item END failed--cleanup aborted |
1306 | ||
1307 | (F) An untrapped exception was raised while executing an END subroutine. | |
1308 | The interpreter is immediately exited. | |
1309 | ||
85ab1d1d | 1310 | =item entering effective %s failed |
5ff3f7a4 | 1311 | |
85ab1d1d | 1312 | (F) While under the C<use filetest> pragma, switching the real and |
5ff3f7a4 GS |
1313 | effective uids or gids failed. |
1314 | ||
748a9306 LW |
1315 | =item Error converting file specification %s |
1316 | ||
5f05dabc | 1317 | (F) An error peculiar to VMS. Because Perl may have to deal with file |
748a9306 LW |
1318 | specifications in either VMS or Unix syntax, it converts them to a |
1319 | single form when it must operate on them directly. Either you've | |
1320 | passed an invalid file specification to Perl, or you've found a | |
1321 | case the conversion routines don't handle. Drat. | |
1322 | ||
e4d48cc9 GS |
1323 | =item %s: Eval-group in insecure regular expression |
1324 | ||
1325 | (F) Perl detected tainted data when trying to compile a regular expression | |
1326 | that contains the C<(?{ ... })> zero-width assertion, which is unsafe. | |
1327 | See L<perlre/(?{ code })>, and L<perlsec>. | |
1328 | ||
1329 | =item %s: Eval-group not allowed, use re 'eval' | |
1330 | ||
1331 | (F) A regular expression contained the C<(?{ ... })> zero-width assertion, | |
1332 | but that construct is only allowed when the C<use re 'eval'> pragma is | |
1333 | in effect. See L<perlre/(?{ code })>. | |
1334 | ||
1335 | =item %s: Eval-group not allowed at run time | |
1336 | ||
1337 | (F) Perl tried to compile a regular expression containing the C<(?{ ... })> | |
3c247ff3 GS |
1338 | zero-width assertion at run time, as it would when the pattern contains |
1339 | interpolated values. Since that is a security risk, it is not allowed. | |
e4d48cc9 GS |
1340 | If you insist, you may still do this by explicitly building the pattern |
1341 | from an interpolated string at run time and using that in an eval(). | |
1342 | See L<perlre/(?{ code })>. | |
1343 | ||
fc36a67e | 1344 | =item Excessively long <> operator |
1345 | ||
1346 | (F) The contents of a <> operator may not exceed the maximum size of a | |
1347 | Perl identifier. If you're just trying to glob a long list of | |
1348 | filenames, try using the glob() operator, or put the filenames into a | |
1349 | variable and glob that. | |
1350 | ||
f86702cc | 1351 | =item Execution of %s aborted due to compilation errors |
a0d0e21e LW |
1352 | |
1353 | (F) The final summary message when a Perl compilation fails. | |
1354 | ||
1355 | =item Exiting eval via %s | |
1356 | ||
8b1a09fc | 1357 | (W) You are exiting an eval by unconventional means, such as |
a0d0e21e LW |
1358 | a goto, or a loop control statement. |
1359 | ||
0a753a76 | 1360 | =item Exiting pseudo-block via %s |
1361 | ||
1362 | (W) You are exiting a rather special block construct (like a sort block or | |
1363 | subroutine) by unconventional means, such as a goto, or a loop control | |
1364 | statement. See L<perlfunc/sort>. | |
1365 | ||
a0d0e21e LW |
1366 | =item Exiting subroutine via %s |
1367 | ||
8b1a09fc | 1368 | (W) You are exiting a subroutine by unconventional means, such as |
a0d0e21e LW |
1369 | a goto, or a loop control statement. |
1370 | ||
1371 | =item Exiting substitution via %s | |
1372 | ||
8b1a09fc | 1373 | (W) You are exiting a substitution by unconventional means, such as |
a0d0e21e LW |
1374 | a return, a goto, or a loop control statement. |
1375 | ||
7b8d334a GS |
1376 | =item Explicit blessing to '' (assuming package main) |
1377 | ||
1378 | (W) You are blessing a reference to a zero length string. This has | |
1379 | the effect of blessing the reference into the package main. This is | |
1380 | usually not what you want. Consider providing a default target | |
ae6c4aac | 1381 | package, e.g. bless($ref, $p || 'MyPackage'); |
7b8d334a | 1382 | |
73b437c8 JH |
1383 | =item false [] range "%s" in regexp |
1384 | ||
1385 | (W) A character class range must start and end at a literal character, not | |
1386 | another character class like C<\d> or C<[:alpha:]>. The "-" in your false | |
1387 | range is interpreted as a literal "-". Consider quoting the "-", "\-". | |
1388 | See L<perlre>. | |
1389 | ||
748a9306 | 1390 | =item Fatal VMS error at %s, line %d |
a0d0e21e | 1391 | |
748a9306 LW |
1392 | (P) An error peculiar to VMS. Something untoward happened in a VMS system |
1393 | service or RTL routine; Perl's exit status should provide more details. The | |
1394 | filename in "at %s" and the line number in "line %d" tell you which section of | |
1395 | the Perl source code is distressed. | |
a0d0e21e LW |
1396 | |
1397 | =item fcntl is not implemented | |
1398 | ||
1399 | (F) Your machine apparently doesn't implement fcntl(). What is this, a | |
1400 | PDP-11 or something? | |
1401 | ||
1402 | =item Filehandle %s never opened | |
1403 | ||
1404 | (W) An I/O operation was attempted on a filehandle that was never initialized. | |
1405 | You need to do an open() or a socket() call, or call a constructor from | |
1406 | the FileHandle package. | |
1407 | ||
af8c498a | 1408 | =item Filehandle %s opened only for input |
a0d0e21e LW |
1409 | |
1410 | (W) You tried to write on a read-only filehandle. If you | |
1411 | intended it to be a read-write filehandle, you needed to open it with | |
8b1a09fc | 1412 | "+E<lt>" or "+E<gt>" or "+E<gt>E<gt>" instead of with "E<lt>" or nothing. If |
5f05dabc | 1413 | you intended only to write the file, use "E<gt>" or "E<gt>E<gt>". See |
8b1a09fc | 1414 | L<perlfunc/open>. |
a0d0e21e | 1415 | |
af8c498a | 1416 | =item Filehandle %s opened only for output |
a0d0e21e | 1417 | |
af8c498a | 1418 | (W) You tried to read from a filehandle opened only for writing. If you |
437784d6 | 1419 | intended it to be a read/write filehandle, you needed to open it with |
8b1a09fc | 1420 | "+E<lt>" or "+E<gt>" or "+E<gt>E<gt>" instead of with "E<lt>" or nothing. If |
af8c498a | 1421 | you intended only to read from the file, use "E<lt>". See |
8b1a09fc | 1422 | L<perlfunc/open>. |
a0d0e21e LW |
1423 | |
1424 | =item Final $ should be \$ or $name | |
1425 | ||
1426 | (F) You must now decide whether the final $ in a string was meant to be | |
1427 | a literal dollar sign, or was meant to introduce a variable name | |
1428 | that happens to be missing. So you have to put either the backslash or | |
1429 | the name. | |
1430 | ||
1431 | =item Final @ should be \@ or @name | |
1432 | ||
1433 | (F) You must now decide whether the final @ in a string was meant to be | |
1434 | a literal "at" sign, or was meant to introduce a variable name | |
1435 | that happens to be missing. So you have to put either the backslash or | |
1436 | the name. | |
1437 | ||
1438 | =item Format %s redefined | |
1439 | ||
1440 | (W) You redefined a format. To suppress this warning, say | |
1441 | ||
1442 | { | |
4438c4b7 | 1443 | no warnings; |
a0d0e21e LW |
1444 | eval "format NAME =..."; |
1445 | } | |
1446 | ||
1447 | =item Format not terminated | |
1448 | ||
1449 | (F) A format must be terminated by a line with a solitary dot. Perl got | |
1450 | to the end of your file without finding such a line. | |
1451 | ||
1452 | =item Found = in conditional, should be == | |
1453 | ||
1454 | (W) You said | |
1455 | ||
1456 | if ($foo = 123) | |
1457 | ||
1458 | when you meant | |
1459 | ||
1460 | if ($foo == 123) | |
1461 | ||
1462 | (or something like that). | |
1463 | ||
1464 | =item gdbm store returned %d, errno %d, key "%s" | |
1465 | ||
1466 | (S) A warning from the GDBM_File extension that a store failed. | |
1467 | ||
1468 | =item gethostent not implemented | |
1469 | ||
1470 | (F) Your C library apparently doesn't implement gethostent(), probably | |
1471 | because if it did, it'd feel morally obligated to return every hostname | |
1472 | on the Internet. | |
1473 | ||
1474 | =item get{sock,peer}name() on closed fd | |
1475 | ||
1476 | (W) You tried to get a socket or peer socket name on a closed socket. | |
1477 | Did you forget to check the return value of your socket() call? | |
1478 | ||
748a9306 LW |
1479 | =item getpwnam returned invalid UIC %#o for user "%s" |
1480 | ||
1481 | (S) A warning peculiar to VMS. The call to C<sys$getuai> underlying the | |
1482 | C<getpwnam> operator returned an invalid UIC. | |
1483 | ||
a0d0e21e LW |
1484 | =item Glob not terminated |
1485 | ||
1486 | (F) The lexer saw a left angle bracket in a place where it was expecting | |
1487 | a term, so it's looking for the corresponding right angle bracket, and not | |
1488 | finding it. Chances are you left some needed parentheses out earlier in | |
1489 | the line, and you really meant a "less than". | |
1490 | ||
1491 | =item Global symbol "%s" requires explicit package name | |
1492 | ||
68dc0745 | 1493 | (F) You've said "use strict vars", which indicates that all variables |
1494 | must either be lexically scoped (using "my"), or explicitly qualified to | |
a0d0e21e LW |
1495 | say which package the global variable is in (using "::"). |
1496 | ||
1497 | =item goto must have label | |
1498 | ||
1499 | (F) Unlike with "next" or "last", you're not allowed to goto an | |
1500 | unspecified destination. See L<perlfunc/goto>. | |
1501 | ||
1502 | =item Had to create %s unexpectedly | |
1503 | ||
1504 | (S) A routine asked for a symbol from a symbol table that ought to have | |
1505 | existed already, but for some reason it didn't, and had to be created on | |
1506 | an emergency basis to prevent a core dump. | |
1507 | ||
1508 | =item Hash %%s missing the % in argument %d of %s() | |
1509 | ||
1510 | (D) Really old Perl let you omit the % on hash names in some spots. This | |
1511 | is now heavily deprecated. | |
1512 | ||
252aa082 JH |
1513 | =item Hexadecimal number > 0xffffffff non-portable |
1514 | ||
9e24b6e2 JH |
1515 | (W) The hexadecimal number you specified is larger than 2**32-1 |
1516 | (4294967295) and therefore non-portable between systems. See | |
1517 | L<perlport> for more on portability concerns. | |
252aa082 | 1518 | |
8903cb82 | 1519 | =item Identifier too long |
1520 | ||
1521 | (F) Perl limits identifiers (names for variables, functions, etc.) to | |
fc36a67e | 1522 | about 250 characters for simple names, and somewhat more for compound |
1523 | names (like C<$A::B>). You've exceeded Perl's limits. Future | |
1524 | versions of Perl are likely to eliminate these arbitrary limitations. | |
8903cb82 | 1525 | |
f675dbe5 CB |
1526 | =item Ill-formed CRTL environ value "%s" |
1527 | ||
1528 | (W) A warning peculiar to VMS. Perl tried to read the CRTL's internal | |
1529 | environ array, and encountered an element without the C<=> delimiter | |
1530 | used to spearate keys from values. The element is ignored. | |
1531 | ||
1532 | =item Ill-formed message in prime_env_iter: |%s| | |
a0d0e21e | 1533 | |
f675dbe5 CB |
1534 | (W) A warning peculiar to VMS. Perl tried to read a logical name |
1535 | or CLI symbol definition when preparing to iterate over %ENV, and | |
1536 | didn't see the expected delimiter between key and value, so the | |
1537 | line was ignored. | |
a0d0e21e | 1538 | |
4fdae800 | 1539 | =item Illegal character %s (carriage return) |
1540 | ||
1541 | (F) A carriage return character was found in the input. This is an | |
1542 | error, and not a warning, because carriage return characters can break | |
54310121 | 1543 | multi-line strings, including here documents (e.g., C<print E<lt>E<lt>EOF;>). |
1544 | ||
1545 | Under Unix, this error is usually caused by executing Perl code -- | |
68dc0745 | 1546 | either the main program, a module, or an eval'd string -- that was |
54310121 | 1547 | transferred over a network connection from a non-Unix system without |
68dc0745 | 1548 | properly converting the text file format. |
1549 | ||
1550 | Under systems that use something other than '\n' to delimit lines of | |
1551 | text, this error can also be caused by reading Perl code from a file | |
1552 | handle that is in binary mode (as set by the C<binmode> operator). | |
1553 | ||
1554 | In either case, the Perl code in question will probably need to be | |
1555 | converted with something like C<s/\x0D\x0A?/\n/g> before it can be | |
1556 | executed. | |
4fdae800 | 1557 | |
a0d0e21e LW |
1558 | =item Illegal division by zero |
1559 | ||
1560 | (F) You tried to divide a number by 0. Either something was wrong in your | |
1561 | logic, or you need to put a conditional in to guard against meaningless input. | |
1562 | ||
1563 | =item Illegal modulus zero | |
1564 | ||
1565 | (F) You tried to divide a number by 0 to get the remainder. Most numbers | |
1566 | don't take to this kindly. | |
1567 | ||
399388f4 GS |
1568 | =item Illegal binary digit %s |
1569 | ||
437784d6 | 1570 | (F) You used a digit other than 0 or 1 in a binary number. |
399388f4 GS |
1571 | |
1572 | =item Illegal octal digit %s | |
a0d0e21e LW |
1573 | |
1574 | (F) You used an 8 or 9 in a octal number. | |
1575 | ||
399388f4 GS |
1576 | =item Illegal binary digit %s ignored |
1577 | ||
1578 | (W) You may have tried to use a digit other than 0 or 1 in a binary number. | |
1579 | Interpretation of the binary number stopped before the offending digit. | |
1580 | ||
1581 | =item Illegal octal digit %s ignored | |
748a9306 LW |
1582 | |
1583 | (W) You may have tried to use an 8 or 9 in a octal number. Interpretation | |
1584 | of the octal number stopped before the 8 or 9. | |
1585 | ||
651978e7 | 1586 | =item Illegal hexadecimal digit %s ignored |
6ff81951 | 1587 | |
252aa082 JH |
1588 | (W) You may have tried to use a character other than 0 - 9 or A - F, a - f |
1589 | in a hexadecimal number. Interpretation of the hexadecimal number stopped | |
6ff81951 GS |
1590 | before the illegal character. |
1591 | ||
81e118e0 JH |
1592 | =item Illegal number of bits in vec |
1593 | ||
0a1cd687 | 1594 | (F) The number of bits in vec() (the third argument) must be a power of |
c5a0f51a | 1595 | two from 1 to 32 (or 64, if your platform supports that). |
09bef843 | 1596 | |
54310121 | 1597 | =item Illegal switch in PERL5OPT: %s |
1598 | ||
1599 | (X) The PERL5OPT environment variable may only be used to set the | |
1600 | following switches: B<-[DIMUdmw]>. | |
1601 | ||
9607fc9c | 1602 | =item In string, @%s now must be written as \@%s |
1603 | ||
1604 | (F) It used to be that Perl would try to guess whether you wanted an | |
1605 | array interpolated or a literal @. It did this when the string was first | |
1606 | used at runtime. Now strings are parsed at compile time, and ambiguous | |
1607 | instances of @ must be disambiguated, either by prepending a backslash to | |
1608 | indicate a literal, or by declaring (or using) the array within the | |
1609 | program before the string (lexically). (Someday it will simply assume | |
1610 | that an unbackslashed @ interpolates an array.) | |
1611 | ||
a0d0e21e LW |
1612 | =item Insecure dependency in %s |
1613 | ||
8b1a09fc | 1614 | (F) You tried to do something that the tainting mechanism didn't like. |
a0d0e21e LW |
1615 | The tainting mechanism is turned on when you're running setuid or setgid, |
1616 | or when you specify B<-T> to turn it on explicitly. The tainting mechanism | |
1617 | labels all data that's derived directly or indirectly from the user, | |
1618 | who is considered to be unworthy of your trust. If any such data is | |
1619 | used in a "dangerous" operation, you get this error. See L<perlsec> | |
1620 | for more information. | |
1621 | ||
1622 | =item Insecure directory in %s | |
1623 | ||
1624 | (F) You can't use system(), exec(), or a piped open in a setuid or setgid | |
8b1a09fc | 1625 | script if C<$ENV{PATH}> contains a directory that is writable by the world. |
a0d0e21e LW |
1626 | See L<perlsec>. |
1627 | ||
62f468fc | 1628 | =item Insecure $ENV{%s} while running %s |
a0d0e21e LW |
1629 | |
1630 | (F) You can't use system(), exec(), or a piped open in a setuid or | |
62f468fc MG |
1631 | setgid script if any of C<$ENV{PATH}>, C<$ENV{IFS}>, C<$ENV{CDPATH}>, |
1632 | C<$ENV{ENV}> or C<$ENV{BASH_ENV}> are derived from data supplied (or | |
a0d0e21e LW |
1633 | potentially supplied) by the user. The script must set the path to a |
1634 | known value, using trustworthy data. See L<perlsec>. | |
1635 | ||
a7ae9550 GS |
1636 | =item Integer overflow in %s number |
1637 | ||
9e24b6e2 | 1638 | (W) The hexadecimal, octal or binary number you have specified either |
c6edd1b7 | 1639 | as a literal or as an argument to hex() or oct() is too big for your |
9e24b6e2 JH |
1640 | architecture, and has been converted to a floating point number. On a |
1641 | 32-bit architecture the largest hexadecimal, octal or binary number | |
1642 | representable without overflow is 0xFFFFFFFF, 037777777777, or | |
1643 | 0b11111111111111111111111111111111 respectively. Note that Perl | |
1644 | transparently promotes all numbers to a floating point representation | |
1645 | internally--subject to loss of precision errors in subsequent | |
1646 | operations. | |
bbce6d69 | 1647 | |
748a9306 LW |
1648 | =item Internal inconsistency in tracking vforks |
1649 | ||
1650 | (S) A warning peculiar to VMS. Perl keeps track of the number | |
5f05dabc | 1651 | of times you've called C<fork> and C<exec>, to determine |
2ba9eb46 | 1652 | whether the current call to C<exec> should affect the current |
b687b08b | 1653 | script or a subprocess (see L<perlvms/"exec LIST">). Somehow, this count |
748a9306 LW |
1654 | has become scrambled, so Perl is making a guess and treating |
1655 | this C<exec> as a request to terminate the Perl script | |
1656 | and execute the specified command. | |
1657 | ||
a0d0e21e LW |
1658 | =item internal disaster in regexp |
1659 | ||
1660 | (P) Something went badly wrong in the regular expression parser. | |
1661 | ||
4eb79ab5 GS |
1662 | =item glob failed (%s) |
1663 | ||
1664 | (W) Something went wrong with the external program(s) used for C<glob> | |
1665 | and C<E<lt>*.cE<gt>>. Usually, this means that you supplied a C<glob> | |
1666 | pattern that caused the external program to fail and exit with a nonzero | |
1667 | status. If the message indicates that the abnormal exit resulted in a | |
1668 | coredump, this may also mean that your csh (C shell) is broken. If so, | |
1669 | you should change all of the csh-related variables in config.sh: If you | |
1670 | have tcsh, make the variables refer to it as if it were csh (e.g. | |
1671 | C<full_csh='/usr/bin/tcsh'>); otherwise, make them all empty (except that | |
1672 | C<d_csh> should be C<'undef'>) so that Perl will think csh is missing. | |
1673 | In either case, after editing config.sh, run C<./Configure -S> and | |
1674 | rebuild Perl. | |
5cd24f17 | 1675 | |
a0d0e21e LW |
1676 | =item internal urp in regexp at /%s/ |
1677 | ||
1678 | (P) Something went badly awry in the regular expression parser. | |
1679 | ||
09bef843 SB |
1680 | =item Invalid %s attribute: %s |
1681 | ||
1682 | The indicated attribute for a subroutine or variable was not recognized | |
1683 | by Perl or by a user-supplied handler. See L<attributes>. | |
1684 | ||
1685 | =item Invalid %s attributes: %s | |
1686 | ||
1687 | The indicated attributes for a subroutine or variable were not recognized | |
1688 | by Perl or by a user-supplied handler. See L<attributes>. | |
1689 | ||
73b437c8 | 1690 | =item invalid [] range "%s" in regexp |
a0d0e21e LW |
1691 | |
1692 | (F) The range specified in a character class had a minimum character | |
1209ba90 | 1693 | greater than the maximum character. See L<perlre>. |
a0d0e21e | 1694 | |
c635e13b | 1695 | =item Invalid conversion in %s: "%s" |
1696 | ||
878e08df | 1697 | (W) Perl does not understand the given format conversion. |
c635e13b | 1698 | See L<perlfunc/sprintf>. |
1699 | ||
09bef843 SB |
1700 | =item Invalid separator character %s in attribute list |
1701 | ||
1702 | (F) Something other than a comma or whitespace was seen between the | |
1703 | elements of an attribute list. If the previous attribute | |
1704 | had a parenthesised parameter list, perhaps that list was terminated | |
1705 | too soon. See L<attributes>. | |
1706 | ||
96e4d5b1 | 1707 | =item Invalid type in pack: '%s' |
1708 | ||
8903cb82 | 1709 | (F) The given character is not a valid pack type. See L<perlfunc/pack>. |
fb73857a | 1710 | (W) The given character is not a valid pack type but used to be silently |
1711 | ignored. | |
96e4d5b1 | 1712 | |
1713 | =item Invalid type in unpack: '%s' | |
1714 | ||
8903cb82 | 1715 | (F) The given character is not a valid unpack type. See L<perlfunc/unpack>. |
fb73857a | 1716 | (W) The given character is not a valid unpack type but used to be silently |
1717 | ignored. | |
96e4d5b1 | 1718 | |
a0d0e21e LW |
1719 | =item ioctl is not implemented |
1720 | ||
1721 | (F) Your machine apparently doesn't implement ioctl(), which is pretty | |
1722 | strange for a machine that supports C. | |
1723 | ||
1724 | =item junk on end of regexp | |
1725 | ||
1726 | (P) The regular expression parser is confused. | |
1727 | ||
1728 | =item Label not found for "last %s" | |
1729 | ||
1730 | (F) You named a loop to break out of, but you're not currently in a | |
1731 | loop of that name, not even if you count where you were called from. | |
1732 | See L<perlfunc/last>. | |
1733 | ||
1734 | =item Label not found for "next %s" | |
1735 | ||
1736 | (F) You named a loop to continue, but you're not currently in a loop of | |
1737 | that name, not even if you count where you were called from. See | |
1738 | L<perlfunc/last>. | |
1739 | ||
1740 | =item Label not found for "redo %s" | |
1741 | ||
1742 | (F) You named a loop to restart, but you're not currently in a loop of | |
1743 | that name, not even if you count where you were called from. See | |
1744 | L<perlfunc/last>. | |
1745 | ||
85ab1d1d | 1746 | =item leaving effective %s failed |
5ff3f7a4 | 1747 | |
85ab1d1d | 1748 | (F) While under the C<use filetest> pragma, switching the real and |
5ff3f7a4 GS |
1749 | effective uids or gids failed. |
1750 | ||
a0d0e21e LW |
1751 | =item listen() on closed fd |
1752 | ||
1753 | (W) You tried to do a listen on a closed socket. Did you forget to check | |
1754 | the return value of your socket() call? See L<perlfunc/listen>. | |
1755 | ||
cd06dffe GS |
1756 | =item Lvalue subs returning %s not implemented yet |
1757 | ||
1758 | (F) Due to limitations in the current implementation, array and hash | |
1759 | values cannot be returned in subroutines used in lvalue context. | |
1760 | See L<perlsub/"Lvalue subroutines">. | |
1761 | ||
a0d0e21e LW |
1762 | =item Method for operation %s not found in package %s during blessing |
1763 | ||
1764 | (F) An attempt was made to specify an entry in an overloading table that | |
e7ea3e70 | 1765 | doesn't resolve to a valid subroutine. See L<overload>. |
a0d0e21e | 1766 | |
3cdd684c TP |
1767 | =item Method %s not permitted |
1768 | ||
1769 | See Server error. | |
1770 | ||
a0d0e21e LW |
1771 | =item Might be a runaway multi-line %s string starting on line %d |
1772 | ||
1773 | (S) An advisory indicating that the previous error may have been caused | |
1774 | by a missing delimiter on a string or pattern, because it eventually | |
1775 | ended earlier on the current line. | |
1776 | ||
1777 | =item Misplaced _ in number | |
1778 | ||
1779 | (W) An underline in a decimal constant wasn't on a 3-digit boundary. | |
1780 | ||
1781 | =item Missing $ on loop variable | |
1782 | ||
8b1a09fc | 1783 | (F) Apparently you've been programming in B<csh> too much. Variables are always |
1784 | mentioned with the $ in Perl, unlike in the shells, where it can vary from | |
a0d0e21e LW |
1785 | one line to the next. |
1786 | ||
4a2d328f | 1787 | =item Missing %sbrace%s on \N{} |
423cee85 | 1788 | |
4a2d328f | 1789 | (F) Wrong syntax of character name literal C<\N{charname}> within |
423cee85 JH |
1790 | double-quotish context. |
1791 | ||
a0d0e21e LW |
1792 | =item Missing comma after first argument to %s function |
1793 | ||
1794 | (F) While certain functions allow you to specify a filehandle or an | |
1795 | "indirect object" before the argument list, this ain't one of them. | |
1796 | ||
06eaf0bc GS |
1797 | =item Missing command in piped open |
1798 | ||
1799 | (W) You used the C<open(FH, "| command")> or C<open(FH, "command |")> | |
1800 | construction, but the command was missing or blank. | |
1801 | ||
748a9306 LW |
1802 | =item Missing operator before %s? |
1803 | ||
1804 | (S) This is an educated guess made in conjunction with the message "%s | |
1805 | found where operator expected". Often the missing operator is a comma. | |
1806 | ||
d98d5fff | 1807 | =item Missing right curly or square bracket |
a0d0e21e | 1808 | |
d98d5fff GS |
1809 | (F) The lexer counted more opening curly or square brackets than |
1810 | closing ones. As a general rule, you'll find it's missing near the place | |
1811 | you were last editing. | |
a0d0e21e | 1812 | |
a0d0e21e LW |
1813 | =item Modification of a read-only value attempted |
1814 | ||
1815 | (F) You tried, directly or indirectly, to change the value of a | |
5f05dabc | 1816 | constant. You didn't, of course, try "2 = 1", because the compiler |
a0d0e21e LW |
1817 | catches that. But an easy way to do the same thing is: |
1818 | ||
1819 | sub mod { $_[0] = 1 } | |
1820 | mod(2); | |
1821 | ||
1822 | Another way is to assign to a substr() that's off the end of the string. | |
1823 | ||
4fe4fdb3 | 1824 | =item Modification of non-creatable array value attempted, subscript %d |
a0d0e21e LW |
1825 | |
1826 | (F) You tried to make an array value spring into existence, and the | |
1827 | subscript was probably negative, even counting from end of the array | |
1828 | backwards. | |
1829 | ||
4fe4fdb3 | 1830 | =item Modification of non-creatable hash value attempted, subscript "%s" |
a0d0e21e | 1831 | |
19a09eb8 | 1832 | (P) You tried to make a hash value spring into existence, and it couldn't |
a0d0e21e LW |
1833 | be created for some peculiar reason. |
1834 | ||
1835 | =item Module name must be constant | |
1836 | ||
1837 | (F) Only a bare module name is allowed as the first argument to a "use". | |
1838 | ||
1839 | =item msg%s not implemented | |
1840 | ||
1841 | (F) You don't have System V message IPC on your system. | |
1842 | ||
1843 | =item Multidimensional syntax %s not supported | |
1844 | ||
8b1a09fc | 1845 | (W) Multidimensional arrays aren't written like C<$foo[1,2,3]>. They're written |
1846 | like C<$foo[1][2][3]>, as in C. | |
1847 | ||
09bef843 SB |
1848 | =item Missing name in "my sub" |
1849 | ||
1850 | (F) The reserved syntax for lexically scoped subroutines requires that they | |
1851 | have a name with which they can be found. | |
1852 | ||
8b1a09fc | 1853 | =item Name "%s::%s" used only once: possible typo |
1854 | ||
68dc0745 | 1855 | (W) Typographical errors often show up as unique variable names. |
1856 | If you had a good reason for having a unique name, then just mention | |
77ca0c92 LW |
1857 | it again somehow to suppress the message. The C<our> declaration is |
1858 | provided for this purpose. | |
a0d0e21e LW |
1859 | |
1860 | =item Negative length | |
1861 | ||
1862 | (F) You tried to do a read/write/send/recv operation with a buffer length | |
1863 | that is less than 0. This is difficult to imagine. | |
1864 | ||
1865 | =item nested *?+ in regexp | |
1866 | ||
5f05dabc | 1867 | (F) You can't quantify a quantifier without intervening parentheses. So |
a0d0e21e LW |
1868 | things like ** or +* or ?* are illegal. |
1869 | ||
5f05dabc | 1870 | Note, however, that the minimal matching quantifiers, C<*?>, C<+?>, and C<??> appear |
a0d0e21e LW |
1871 | to be nested quantifiers, but aren't. See L<perlre>. |
1872 | ||
1873 | =item No #! line | |
1874 | ||
1875 | (F) The setuid emulator requires that scripts have a well-formed #! line | |
1876 | even on machines that don't support the #! construct. | |
1877 | ||
1878 | =item No %s allowed while running setuid | |
1879 | ||
1880 | (F) Certain operations are deemed to be too insecure for a setuid or setgid | |
1881 | script to even be allowed to attempt. Generally speaking there will be | |
1882 | another way to do what you want that is, if not secure, at least securable. | |
1883 | See L<perlsec>. | |
1884 | ||
1885 | =item No B<-e> allowed in setuid scripts | |
1886 | ||
1887 | (F) A setuid script can't be specified by the user. | |
1888 | ||
1889 | =item No comma allowed after %s | |
1890 | ||
1891 | (F) A list operator that has a filehandle or "indirect object" is not | |
1892 | allowed to have a comma between that and the following arguments. | |
1893 | Otherwise it'd be just another one of the arguments. | |
1894 | ||
0a753a76 | 1895 | One possible cause for this is that you expected to have imported a |
1896 | constant to your name space with B<use> or B<import> while no such | |
1897 | importing took place, it may for example be that your operating system | |
1898 | does not support that particular constant. Hopefully you did use an | |
1899 | explicit import list for the constants you expect to see, please see | |
1900 | L<perlfunc/use> and L<perlfunc/import>. While an explicit import list | |
1901 | would probably have caught this error earlier it naturally does not | |
1902 | remedy the fact that your operating system still does not support that | |
1903 | constant. Maybe you have a typo in the constants of the symbol import | |
1904 | list of B<use> or B<import> or in the constant name at the line where | |
1905 | this error was triggered? | |
1906 | ||
748a9306 LW |
1907 | =item No command into which to pipe on command line |
1908 | ||
1909 | (F) An error peculiar to VMS. Perl handles its own command line redirection, | |
54310121 | 1910 | and found a '|' at the end of the command line, so it doesn't know where you |
748a9306 LW |
1911 | want to pipe the output from this command. |
1912 | ||
a0d0e21e LW |
1913 | =item No DB::DB routine defined |
1914 | ||
1915 | (F) The currently executing code was compiled with the B<-d> switch, | |
1916 | but for some reason the perl5db.pl file (or some facsimile thereof) | |
1917 | didn't define a routine to be called at the beginning of each | |
1918 | statement. Which is odd, because the file should have been required | |
1919 | automatically, and should have blown up the require if it didn't parse | |
1920 | right. | |
1921 | ||
1922 | =item No dbm on this machine | |
1923 | ||
1924 | (P) This is counted as an internal error, because every machine should | |
5f05dabc | 1925 | supply dbm nowadays, because Perl comes with SDBM. See L<SDBM_File>. |
a0d0e21e LW |
1926 | |
1927 | =item No DBsub routine | |
1928 | ||
1929 | (F) The currently executing code was compiled with the B<-d> switch, | |
1930 | but for some reason the perl5db.pl file (or some facsimile thereof) | |
1931 | didn't define a DB::sub routine to be called at the beginning of each | |
1932 | ordinary subroutine call. | |
1933 | ||
8b1a09fc | 1934 | =item No error file after 2E<gt> or 2E<gt>E<gt> on command line |
748a9306 LW |
1935 | |
1936 | (F) An error peculiar to VMS. Perl handles its own command line redirection, | |
8b1a09fc | 1937 | and found a '2E<gt>' or a '2E<gt>E<gt>' on the command line, but can't find |
1938 | the name of the file to which to write data destined for stderr. | |
748a9306 | 1939 | |
8b1a09fc | 1940 | =item No input file after E<lt> on command line |
748a9306 LW |
1941 | |
1942 | (F) An error peculiar to VMS. Perl handles its own command line redirection, | |
8b1a09fc | 1943 | and found a 'E<lt>' on the command line, but can't find the name of the file |
1944 | from which to read data for stdin. | |
748a9306 | 1945 | |
8b1a09fc | 1946 | =item No output file after E<gt> on command line |
748a9306 LW |
1947 | |
1948 | (F) An error peculiar to VMS. Perl handles its own command line redirection, | |
8b1a09fc | 1949 | and found a lone 'E<gt>' at the end of the command line, so it doesn't know |
54310121 | 1950 | where you wanted to redirect stdout. |
748a9306 | 1951 | |
8b1a09fc | 1952 | =item No output file after E<gt> or E<gt>E<gt> on command line |
748a9306 LW |
1953 | |
1954 | (F) An error peculiar to VMS. Perl handles its own command line redirection, | |
8b1a09fc | 1955 | and found a 'E<gt>' or a 'E<gt>E<gt>' on the command line, but can't find the |
1956 | name of the file to which to write data destined for stdout. | |
748a9306 | 1957 | |
a0d0e21e LW |
1958 | =item No Perl script found in input |
1959 | ||
1960 | (F) You called C<perl -x>, but no line was found in the file beginning | |
1961 | with #! and containing the word "perl". | |
1962 | ||
1963 | =item No setregid available | |
1964 | ||
1965 | (F) Configure didn't find anything resembling the setregid() call for | |
1966 | your system. | |
1967 | ||
1968 | =item No setreuid available | |
1969 | ||
1970 | (F) Configure didn't find anything resembling the setreuid() call for | |
1971 | your system. | |
1972 | ||
1973 | =item No space allowed after B<-I> | |
1974 | ||
1975 | (F) The argument to B<-I> must follow the B<-I> immediately with no | |
1976 | intervening space. | |
1977 | ||
88e9b055 | 1978 | =item No such pseudo-hash field "%s" |
57079c46 | 1979 | |
88e9b055 | 1980 | (F) You tried to access an array as a hash, but the field name used is |
57079c46 GA |
1981 | not defined. The hash at index 0 should map all valid field names to |
1982 | array indices for that to work. | |
1983 | ||
88e9b055 | 1984 | =item No such pseudo-hash field "%s" in variable %s of type %s |
f1192cee GA |
1985 | |
1986 | (F) You tried to access a field of a typed variable where the type | |
1987 | does not know about the field name. The field names are looked up in | |
1988 | the %FIELDS hash in the type package at compile time. The %FIELDS hash | |
1989 | is usually set up with the 'fields' pragma. | |
1990 | ||
748a9306 LW |
1991 | =item No such pipe open |
1992 | ||
1993 | (P) An error peculiar to VMS. The internal routine my_pclose() tried to | |
1994 | close a pipe which hadn't been opened. This should have been caught earlier as | |
1995 | an attempt to close an unopened filehandle. | |
1996 | ||
a0d0e21e LW |
1997 | =item No such signal: SIG%s |
1998 | ||
1999 | (W) You specified a signal name as a subscript to %SIG that was not recognized. | |
2000 | Say C<kill -l> in your shell to see the valid signal names on your system. | |
2001 | ||
bd3fa61c CB |
2002 | =item no UTC offset information; assuming local time is UTC |
2003 | ||
db7c17d7 | 2004 | (S) A warning peculiar to VMS. Perl was unable to find the local |
f675dbe5 CB |
2005 | timezone offset, so it's assuming that local system time is equivalent |
2006 | to UTC. If it's not, define the logical name F<SYS$TIMEZONE_DIFFERENTIAL> | |
2007 | to translate to the number of seconds which need to be added to UTC to | |
2008 | get local time. | |
2009 | ||
a0d0e21e LW |
2010 | =item Not a CODE reference |
2011 | ||
2012 | (F) Perl was trying to evaluate a reference to a code value (that is, a | |
2013 | subroutine), but found a reference to something else instead. You can | |
2014 | use the ref() function to find out what kind of ref it really was. | |
2015 | See also L<perlref>. | |
2016 | ||
2017 | =item Not a format reference | |
2018 | ||
2019 | (F) I'm not sure how you managed to generate a reference to an anonymous | |
2020 | format, but this indicates you did, and that it didn't exist. | |
2021 | ||
2022 | =item Not a GLOB reference | |
2023 | ||
55497cff | 2024 | (F) Perl was trying to evaluate a reference to a "typeglob" (that is, |
a0d0e21e LW |
2025 | a symbol table entry that looks like C<*foo>), but found a reference to |
2026 | something else instead. You can use the ref() function to find out | |
2027 | what kind of ref it really was. See L<perlref>. | |
2028 | ||
2029 | =item Not a HASH reference | |
2030 | ||
2031 | (F) Perl was trying to evaluate a reference to a hash value, but | |
2032 | found a reference to something else instead. You can use the ref() | |
2033 | function to find out what kind of ref it really was. See L<perlref>. | |
2034 | ||
2035 | =item Not a perl script | |
2036 | ||
2037 | (F) The setuid emulator requires that scripts have a well-formed #! line | |
2038 | even on machines that don't support the #! construct. The line must | |
2039 | mention perl. | |
2040 | ||
2041 | =item Not a SCALAR reference | |
2042 | ||
2043 | (F) Perl was trying to evaluate a reference to a scalar value, but | |
2044 | found a reference to something else instead. You can use the ref() | |
2045 | function to find out what kind of ref it really was. See L<perlref>. | |
2046 | ||
2047 | =item Not a subroutine reference | |
2048 | ||
2049 | (F) Perl was trying to evaluate a reference to a code value (that is, a | |
2050 | subroutine), but found a reference to something else instead. You can | |
2051 | use the ref() function to find out what kind of ref it really was. | |
2052 | See also L<perlref>. | |
2053 | ||
e7ea3e70 | 2054 | =item Not a subroutine reference in overload table |
a0d0e21e LW |
2055 | |
2056 | (F) An attempt was made to specify an entry in an overloading table that | |
8b1a09fc | 2057 | doesn't somehow point to a valid subroutine. See L<overload>. |
a0d0e21e LW |
2058 | |
2059 | =item Not an ARRAY reference | |
2060 | ||
2061 | (F) Perl was trying to evaluate a reference to an array value, but | |
2062 | found a reference to something else instead. You can use the ref() | |
2063 | function to find out what kind of ref it really was. See L<perlref>. | |
2064 | ||
2065 | =item Not enough arguments for %s | |
2066 | ||
2067 | (F) The function requires more arguments than you specified. | |
2068 | ||
2069 | =item Not enough format arguments | |
2070 | ||
2071 | (W) A format specified more picture fields than the next line supplied. | |
2072 | See L<perlform>. | |
2073 | ||
2074 | =item Null filename used | |
2075 | ||
5f05dabc | 2076 | (F) You can't require the null filename, especially because on many machines |
a0d0e21e LW |
2077 | that means the current directory! See L<perlfunc/require>. |
2078 | ||
55497cff | 2079 | =item Null picture in formline |
2080 | ||
2081 | (F) The first argument to formline must be a valid format picture | |
2082 | specification. It was found to be empty, which probably means you | |
2083 | supplied it an uninitialized value. See L<perlform>. | |
2084 | ||
a0d0e21e LW |
2085 | =item NULL OP IN RUN |
2086 | ||
2087 | (P) Some internal routine called run() with a null opcode pointer. | |
2088 | ||
2089 | =item Null realloc | |
2090 | ||
2091 | (P) An attempt was made to realloc NULL. | |
2092 | ||
2093 | =item NULL regexp argument | |
2094 | ||
5f05dabc | 2095 | (P) The internal pattern matching routines blew it big time. |
a0d0e21e LW |
2096 | |
2097 | =item NULL regexp parameter | |
2098 | ||
2099 | (P) The internal pattern matching routines are out of their gourd. | |
2100 | ||
fc36a67e | 2101 | =item Number too long |
2102 | ||
2103 | (F) Perl limits the representation of decimal numbers in programs to about | |
2104 | about 250 characters. You've exceeded that length. Future versions of | |
2105 | Perl are likely to eliminate this arbitrary limitation. In the meantime, | |
2106 | try using scientific notation (e.g. "1e6" instead of "1_000_000"). | |
2107 | ||
252aa082 JH |
2108 | =item Octal number > 037777777777 non-portable |
2109 | ||
9e24b6e2 JH |
2110 | (W) The octal number you specified is larger than 2**32-1 (4294967295) |
2111 | and therefore non-portable between systems. See L<perlport> for more | |
2112 | on portability concerns. | |
252aa082 JH |
2113 | |
2114 | See also L<perlport> for writing portable code. | |
2115 | ||
1930e939 | 2116 | =item Odd number of elements in hash assignment |
a0d0e21e | 2117 | |
1930e939 TP |
2118 | (S) You specified an odd number of elements to initialize a hash, which |
2119 | is odd, because hashes come in key/value pairs. | |
a0d0e21e | 2120 | |
bbce6d69 | 2121 | =item Offset outside string |
2122 | ||
2123 | (F) You tried to do a read/write/send/recv operation with an offset | |
2124 | pointing outside the buffer. This is difficult to imagine. | |
2125 | The sole exception to this is that C<sysread()>ing past the buffer | |
2126 | will extend the buffer and zero pad the new area. | |
2127 | ||
a0d0e21e LW |
2128 | =item oops: oopsAV |
2129 | ||
2130 | (S) An internal warning that the grammar is screwed up. | |
2131 | ||
2132 | =item oops: oopsHV | |
2133 | ||
2134 | (S) An internal warning that the grammar is screwed up. | |
2135 | ||
56f7f34b | 2136 | =item Operation `%s': no method found, %s |
44a8e56a | 2137 | |
e7ea3e70 IZ |
2138 | (F) An attempt was made to perform an overloaded operation for which |
2139 | no handler was defined. While some handlers can be autogenerated in | |
2140 | terms of other handlers, there is no default handler for any | |
2141 | operation, unless C<fallback> overloading key is specified to be | |
2142 | true. See L<overload>. | |
44a8e56a | 2143 | |
748a9306 LW |
2144 | =item Operator or semicolon missing before %s |
2145 | ||
2146 | (S) You used a variable or subroutine call where the parser was | |
2147 | expecting an operator. The parser has assumed you really meant | |
2148 | to use an operator, but this is highly likely to be incorrect. | |
2149 | For example, if you say "*foo *foo" it will be interpreted as | |
2150 | if you said "*foo * 'foo'". | |
2151 | ||
a80b8354 GS |
2152 | =item Out of memory! |
2153 | ||
2154 | (X) The malloc() function returned 0, indicating there was insufficient | |
2155 | remaining memory (or virtual memory) to satisfy the request. Perl | |
2156 | has no option but to exit immediately. | |
2157 | ||
a0d0e21e LW |
2158 | =item Out of memory for yacc stack |
2159 | ||
2160 | (F) The yacc parser wanted to grow its stack so it could continue parsing, | |
2161 | but realloc() wouldn't give it more memory, virtual or otherwise. | |
2162 | ||
1b979e0a | 2163 | =item Out of memory during request for %s |
a0d0e21e | 2164 | |
55497cff | 2165 | (X|F) The malloc() function returned 0, indicating there was insufficient |
54310121 | 2166 | remaining memory (or virtual memory) to satisfy the request. |
eff9c6e2 CS |
2167 | |
2168 | The request was judged to be small, so the possibility to trap it | |
2169 | depends on the way perl was compiled. By default it is not trappable. | |
2170 | However, if compiled for this, Perl may use the contents of C<$^M> as | |
2171 | an emergency pool after die()ing with this message. In this case the | |
55497cff | 2172 | error is trappable I<once>. |
2173 | ||
1b979e0a | 2174 | =item Out of memory during "large" request for %s |
55497cff | 2175 | |
2176 | (F) The malloc() function returned 0, indicating there was insufficient | |
2177 | remaining memory (or virtual memory) to satisfy the request. However, | |
2178 | the request was judged large enough (compile-time default is 64K), so | |
2179 | a possibility to shut down by trapping this error is granted. | |
2180 | ||
1b979e0a IZ |
2181 | =item Out of memory during ridiculously large request |
2182 | ||
2183 | (F) You can't allocate more than 2^31+"small amount" bytes. This error | |
2184 | is most likely to be caused by a typo in the Perl program. e.g., C<$arr[time]> | |
2185 | instead of C<$arr[$time]>. | |
2186 | ||
a0d0e21e LW |
2187 | =item page overflow |
2188 | ||
2189 | (W) A single call to write() produced more lines than can fit on a page. | |
2190 | See L<perlform>. | |
2191 | ||
2192 | =item panic: ck_grep | |
2193 | ||
2194 | (P) Failed an internal consistency check trying to compile a grep. | |
2195 | ||
2196 | =item panic: ck_split | |
2197 | ||
2198 | (P) Failed an internal consistency check trying to compile a split. | |
2199 | ||
2200 | =item panic: corrupt saved stack index | |
2201 | ||
2202 | (P) The savestack was requested to restore more localized values than there | |
2203 | are in the savestack. | |
2204 | ||
810b8aa5 GS |
2205 | =item panic: del_backref |
2206 | ||
2207 | (P) Failed an internal consistency check while trying to reset a weak | |
2208 | reference. | |
2209 | ||
a0d0e21e LW |
2210 | =item panic: die %s |
2211 | ||
2212 | (P) We popped the context stack to an eval context, and then discovered | |
2213 | it wasn't an eval context. | |
2214 | ||
2215 | =item panic: do_match | |
2216 | ||
2217 | (P) The internal pp_match() routine was called with invalid operational data. | |
2218 | ||
2219 | =item panic: do_split | |
2220 | ||
2221 | (P) Something terrible went wrong in setting up for the split. | |
2222 | ||
2223 | =item panic: do_subst | |
2224 | ||
2225 | (P) The internal pp_subst() routine was called with invalid operational data. | |
2226 | ||
2227 | =item panic: do_trans | |
2228 | ||
2229 | (P) The internal do_trans() routine was called with invalid operational data. | |
2230 | ||
c635e13b | 2231 | =item panic: frexp |
2232 | ||
2233 | (P) The library function frexp() failed, making printf("%f") impossible. | |
2234 | ||
a0d0e21e LW |
2235 | =item panic: goto |
2236 | ||
2237 | (P) We popped the context stack to a context with the specified label, | |
2238 | and then discovered it wasn't a context we know how to do a goto in. | |
2239 | ||
2240 | =item panic: INTERPCASEMOD | |
2241 | ||
2242 | (P) The lexer got into a bad state at a case modifier. | |
2243 | ||
2244 | =item panic: INTERPCONCAT | |
2245 | ||
2246 | (P) The lexer got into a bad state parsing a string with brackets. | |
2247 | ||
e446cec8 IZ |
2248 | =item panic: kid popen errno read |
2249 | ||
2250 | (F) forked child returned an incomprehensible message about its errno. | |
2251 | ||
a0d0e21e LW |
2252 | =item panic: last |
2253 | ||
2254 | (P) We popped the context stack to a block context, and then discovered | |
2255 | it wasn't a block context. | |
2256 | ||
2257 | =item panic: leave_scope clearsv | |
2258 | ||
5f05dabc | 2259 | (P) A writable lexical variable became read-only somehow within the scope. |
a0d0e21e LW |
2260 | |
2261 | =item panic: leave_scope inconsistency | |
2262 | ||
2263 | (P) The savestack probably got out of sync. At least, there was an | |
2264 | invalid enum on the top of it. | |
2265 | ||
2266 | =item panic: malloc | |
2267 | ||
2268 | (P) Something requested a negative number of bytes of malloc. | |
2269 | ||
810b8aa5 GS |
2270 | =item panic: magic_killbackrefs |
2271 | ||
2272 | (P) Failed an internal consistency check while trying to reset all weak | |
2273 | references to an object. | |
2274 | ||
a0d0e21e LW |
2275 | =item panic: mapstart |
2276 | ||
2277 | (P) The compiler is screwed up with respect to the map() function. | |
2278 | ||
2279 | =item panic: null array | |
2280 | ||
2281 | (P) One of the internal array routines was passed a null AV pointer. | |
2282 | ||
2283 | =item panic: pad_alloc | |
2284 | ||
2285 | (P) The compiler got confused about which scratch pad it was allocating | |
2286 | and freeing temporaries and lexicals from. | |
2287 | ||
2288 | =item panic: pad_free curpad | |
2289 | ||
2290 | (P) The compiler got confused about which scratch pad it was allocating | |
2291 | and freeing temporaries and lexicals from. | |
2292 | ||
2293 | =item panic: pad_free po | |
2294 | ||
2295 | (P) An invalid scratch pad offset was detected internally. | |
2296 | ||
2297 | =item panic: pad_reset curpad | |
2298 | ||
2299 | (P) The compiler got confused about which scratch pad it was allocating | |
2300 | and freeing temporaries and lexicals from. | |
2301 | ||
2302 | =item panic: pad_sv po | |
2303 | ||
2304 | (P) An invalid scratch pad offset was detected internally. | |
2305 | ||
2306 | =item panic: pad_swipe curpad | |
2307 | ||
2308 | (P) The compiler got confused about which scratch pad it was allocating | |
2309 | and freeing temporaries and lexicals from. | |
2310 | ||
2311 | =item panic: pad_swipe po | |
2312 | ||
2313 | (P) An invalid scratch pad offset was detected internally. | |
2314 | ||
2315 | =item panic: pp_iter | |
2316 | ||
2317 | (P) The foreach iterator got called in a non-loop context frame. | |
2318 | ||
2319 | =item panic: realloc | |
2320 | ||
2321 | (P) Something requested a negative number of bytes of realloc. | |
2322 | ||
2323 | =item panic: restartop | |
2324 | ||
2325 | (P) Some internal routine requested a goto (or something like it), and | |
2326 | didn't supply the destination. | |
2327 | ||
2328 | =item panic: return | |
2329 | ||
2330 | (P) We popped the context stack to a subroutine or eval context, and | |
2331 | then discovered it wasn't a subroutine or eval context. | |
2332 | ||
2333 | =item panic: scan_num | |
2334 | ||
2335 | (P) scan_num() got called on something that wasn't a number. | |
2336 | ||
2337 | =item panic: sv_insert | |
2338 | ||
2339 | (P) The sv_insert() routine was told to remove more string than there | |
2340 | was string. | |
2341 | ||
2342 | =item panic: top_env | |
2343 | ||
6224f72b | 2344 | (P) The compiler attempted to do a goto, or something weird like that. |
a0d0e21e LW |
2345 | |
2346 | =item panic: yylex | |
2347 | ||
2348 | (P) The lexer got into a bad state while processing a case modifier. | |
2349 | ||
7b8d334a | 2350 | =item Parentheses missing around "%s" list |
a0d0e21e LW |
2351 | |
2352 | (W) You said something like | |
2353 | ||
2354 | my $foo, $bar = @_; | |
2355 | ||
2356 | when you meant | |
2357 | ||
2358 | my ($foo, $bar) = @_; | |
2359 | ||
2360 | Remember that "my" and "local" bind closer than comma. | |
2361 | ||
2362 | =item Perl %3.3f required--this is only version %s, stopped | |
2363 | ||
2364 | (F) The module in question uses features of a version of Perl more recent | |
2365 | than the currently running version. How long has it been since you upgraded, | |
2366 | anyway? See L<perlfunc/require>. | |
2367 | ||
2368 | =item Permission denied | |
2369 | ||
2370 | (F) The setuid emulator in suidperl decided you were up to no good. | |
2371 | ||
bd3fa61c | 2372 | =item pid %x not a child |
748a9306 LW |
2373 | |
2374 | (W) A warning peculiar to VMS. Waitpid() was asked to wait for a process which | |
2375 | isn't a subprocess of the current process. While this is fine from VMS' | |
2376 | perspective, it's probably not what you intended. | |
2377 | ||
a0d0e21e LW |
2378 | =item POSIX getpgrp can't take an argument |
2379 | ||
81777298 | 2380 | (F) Your system has POSIX getpgrp(), which takes no argument, unlike |
a0d0e21e LW |
2381 | the BSD version, which takes a pid. |
2382 | ||
6bc102ca GS |
2383 | =item Possible Y2K bug: %s |
2384 | ||
2385 | (W) You are concatenating the number 19 with another number, which | |
2386 | could be a potential Year 2000 problem. | |
2387 | ||
bbce6d69 | 2388 | =item Possible attempt to put comments in qw() list |
2389 | ||
774d564b | 2390 | (W) qw() lists contain items separated by whitespace; as with literal |
2391 | strings, comment characters are not ignored, but are instead treated | |
2392 | as literal data. (You may have used different delimiters than the | |
7b8d334a | 2393 | parentheses shown here; braces are also frequently used.) |
bbce6d69 | 2394 | |
774d564b | 2395 | You probably wrote something like this: |
2396 | ||
54310121 | 2397 | @list = qw( |
774d564b | 2398 | a # a comment |
bbce6d69 | 2399 | b # another comment |
774d564b | 2400 | ); |
bbce6d69 | 2401 | |
2402 | when you should have written this: | |
2403 | ||
774d564b | 2404 | @list = qw( |
54310121 | 2405 | a |
2406 | b | |
774d564b | 2407 | ); |
2408 | ||
2409 | If you really want comments, build your list the | |
2410 | old-fashioned way, with quotes and commas: | |
2411 | ||
2412 | @list = ( | |
2413 | 'a', # a comment | |
2414 | 'b', # another comment | |
2415 | ); | |
bbce6d69 | 2416 | |
2417 | =item Possible attempt to separate words with commas | |
2418 | ||
774d564b | 2419 | (W) qw() lists contain items separated by whitespace; therefore commas |
68dc0745 | 2420 | aren't needed to separate the items. (You may have used different |
774d564b | 2421 | delimiters than the parentheses shown here; braces are also frequently |
2422 | used.) | |
bbce6d69 | 2423 | |
54310121 | 2424 | You probably wrote something like this: |
bbce6d69 | 2425 | |
774d564b | 2426 | qw! a, b, c !; |
2427 | ||
2428 | which puts literal commas into some of the list items. Write it without | |
2429 | commas if you don't want them to appear in your data: | |
bbce6d69 | 2430 | |
774d564b | 2431 | qw! a b c !; |
bbce6d69 | 2432 | |
a0d0e21e LW |
2433 | =item Possible memory corruption: %s overflowed 3rd argument |
2434 | ||
2435 | (F) An ioctl() or fcntl() returned more than Perl was bargaining for. | |
2436 | Perl guesses a reasonable buffer size, but puts a sentinel byte at the | |
2437 | end of the buffer just in case. This sentinel byte got clobbered, and | |
2438 | Perl assumes that memory is now corrupted. See L<perlfunc/ioctl>. | |
2439 | ||
2440 | =item Precedence problem: open %s should be open(%s) | |
2441 | ||
2442 | (S) The old irregular construct | |
cb1a09d0 | 2443 | |
a0d0e21e LW |
2444 | open FOO || die; |
2445 | ||
2446 | is now misinterpreted as | |
2447 | ||
2448 | open(FOO || die); | |
2449 | ||
68dc0745 | 2450 | because of the strict regularization of Perl 5's grammar into unary |
2451 | and list operators. (The old open was a little of both.) You must | |
2452 | put parentheses around the filehandle, or use the new "or" operator | |
2453 | instead of "||". | |
a0d0e21e | 2454 | |
3cdd684c TP |
2455 | =item Premature end of script headers |
2456 | ||
2457 | See Server error. | |
2458 | ||
a0d0e21e LW |
2459 | =item print on closed filehandle %s |
2460 | ||
2461 | (W) The filehandle you're printing on got itself closed sometime before now. | |
2462 | Check your logic flow. | |
2463 | ||
2464 | =item printf on closed filehandle %s | |
2465 | ||
2466 | (W) The filehandle you're writing to got itself closed sometime before now. | |
2467 | Check your logic flow. | |
2468 | ||
2469 | =item Probable precedence problem on %s | |
2470 | ||
54310121 | 2471 | (W) The compiler found a bareword where it expected a conditional, |
a0d0e21e LW |
2472 | which often indicates that an || or && was parsed as part of the |
2473 | last argument of the previous construct, for example: | |
2474 | ||
2475 | open FOO || die; | |
2476 | ||
3fe9a6f1 | 2477 | =item Prototype mismatch: %s vs %s |
4633a7c4 | 2478 | |
3fe9a6f1 | 2479 | (S) The subroutine being declared or defined had previously been declared |
2480 | or defined with a different function prototype. | |
4633a7c4 | 2481 | |
89ea2908 GA |
2482 | =item Range iterator outside integer range |
2483 | ||
2484 | (F) One (or both) of the numeric arguments to the range operator ".." | |
2485 | are outside the range which can be represented by integers internally. | |
2486 | One possible workaround is to force Perl to use magical string | |
2487 | increment by prepending "0" to your numbers. | |
2488 | ||
af8c498a | 2489 | =item Read on closed filehandle %s |
a0d0e21e LW |
2490 | |
2491 | (W) The filehandle you're reading from got itself closed sometime before now. | |
2492 | Check your logic flow. | |
2493 | ||
4ad56ec9 IZ |
2494 | =item realloc() of freed memory ignored |
2495 | ||
2496 | (S) An internal routine called realloc() on something that had already | |
2497 | been freed. | |
2498 | ||
a0d0e21e LW |
2499 | =item Reallocation too large: %lx |
2500 | ||
54310121 | 2501 | (F) You can't allocate more than 64K on an MS-DOS machine. |
a0d0e21e LW |
2502 | |
2503 | =item Recompile perl with B<-D>DEBUGGING to use B<-D> switch | |
2504 | ||
2505 | (F) You can't use the B<-D> option unless the code to produce the | |
2506 | desired output is compiled into Perl, which entails some overhead, | |
2507 | which is why it's currently left out of your copy. | |
2508 | ||
3e0ccd42 | 2509 | =item Recursive inheritance detected in package '%s' |
a0d0e21e LW |
2510 | |
2511 | (F) More than 100 levels of inheritance were used. Probably indicates | |
2512 | an unintended loop in your inheritance hierarchy. | |
2513 | ||
3e0ccd42 JP |
2514 | =item Recursive inheritance detected while looking for method '%s' in package '%s' |
2515 | ||
2516 | (F) More than 100 levels of inheritance were encountered while invoking a | |
2517 | method. Probably indicates an unintended loop in your inheritance hierarchy. | |
2518 | ||
1930e939 TP |
2519 | =item Reference found where even-sized list expected |
2520 | ||
2521 | (W) You gave a single reference where Perl was expecting a list with | |
2522 | an even number of elements (for assignment to a hash). This | |
2523 | usually means that you used the anon hash constructor when you meant | |
2524 | to use parens. In any case, a hash requires key/value B<pairs>. | |
7b8d334a GS |
2525 | |
2526 | %hash = { one => 1, two => 2, }; # WRONG | |
2527 | %hash = [ qw/ an anon array / ]; # WRONG | |
2528 | %hash = ( one => 1, two => 2, ); # right | |
2529 | %hash = qw( one 1 two 2 ); # also fine | |
2530 | ||
810b8aa5 GS |
2531 | =item Reference is already weak |
2532 | ||
2533 | (W) You have attempted to weaken a reference that is already weak. | |
2534 | Doing so has no effect. | |
2535 | ||
a0d0e21e LW |
2536 | =item Reference miscount in sv_replace() |
2537 | ||
2538 | (W) The internal sv_replace() function was handed a new SV with a | |
2539 | reference count of other than 1. | |
2540 | ||
fb73857a | 2541 | =item regexp *+ operand could be empty |
2542 | ||
2543 | (F) The part of the regexp subject to either the * or + quantifier | |
2544 | could match an empty string. | |
2545 | ||
a0d0e21e LW |
2546 | =item regexp memory corruption |
2547 | ||
2548 | (P) The regular expression engine got confused by what the regular | |
2549 | expression compiler gave it. | |
2550 | ||
2551 | =item regexp out of space | |
2552 | ||
2553 | (P) A "can't happen" error, because safemalloc() should have caught it earlier. | |
2554 | ||
a0d0e21e LW |
2555 | =item Reversed %s= operator |
2556 | ||
2557 | (W) You wrote your assignment operator backwards. The = must always | |
2558 | comes last, to avoid ambiguity with subsequent unary operators. | |
2559 | ||
2560 | =item Runaway format | |
2561 | ||
2562 | (F) Your format contained the ~~ repeat-until-blank sequence, but it | |
2563 | produced 200 lines at once, and the 200th line looked exactly like the | |
2564 | 199th line. Apparently you didn't arrange for the arguments to exhaust | |
2565 | themselves, either by using ^ instead of @ (for scalar variables), or by | |
2566 | shifting or popping (for array variables). See L<perlform>. | |
2567 | ||
2568 | =item Scalar value @%s[%s] better written as $%s[%s] | |
2569 | ||
a6006777 | 2570 | (W) You've used an array slice (indicated by @) to select a single element of |
a0d0e21e | 2571 | an array. Generally it's better to ask for a scalar value (indicated by $). |
8b1a09fc | 2572 | The difference is that C<$foo[&bar]> always behaves like a scalar, both when |
2573 | assigning to it and when evaluating its argument, while C<@foo[&bar]> behaves | |
a0d0e21e | 2574 | like a list when you assign to it, and provides a list context to its |
5f05dabc | 2575 | subscript, which can do weird things if you're expecting only one subscript. |
a0d0e21e | 2576 | |
748a9306 | 2577 | On the other hand, if you were actually hoping to treat the array |
5f05dabc | 2578 | element as a list, you need to look into how references work, because |
748a9306 LW |
2579 | Perl will not magically convert between scalars and lists for you. See |
2580 | L<perlref>. | |
2581 | ||
a6006777 | 2582 | =item Scalar value @%s{%s} better written as $%s{%s} |
2583 | ||
2584 | (W) You've used a hash slice (indicated by @) to select a single element of | |
2585 | a hash. Generally it's better to ask for a scalar value (indicated by $). | |
2586 | The difference is that C<$foo{&bar}> always behaves like a scalar, both when | |
2587 | assigning to it and when evaluating its argument, while C<@foo{&bar}> behaves | |
2588 | like a list when you assign to it, and provides a list context to its | |
2589 | subscript, which can do weird things if you're expecting only one subscript. | |
2590 | ||
2591 | On the other hand, if you were actually hoping to treat the hash | |
2592 | element as a list, you need to look into how references work, because | |
2593 | Perl will not magically convert between scalars and lists for you. See | |
2594 | L<perlref>. | |
2595 | ||
a0d0e21e LW |
2596 | =item Script is not setuid/setgid in suidperl |
2597 | ||
54310121 | 2598 | (F) Oddly, the suidperl program was invoked on a script without a setuid |
2599 | or setgid bit set. This doesn't make much sense. | |
a0d0e21e LW |
2600 | |
2601 | =item Search pattern not terminated | |
2602 | ||
2603 | (F) The lexer couldn't find the final delimiter of a // or m{} | |
2604 | construct. Remember that bracketing delimiters count nesting level. | |
fb73857a | 2605 | Missing the leading C<$> from a variable C<$m> may cause this error. |
a0d0e21e | 2606 | |
96e4d5b1 | 2607 | =item %sseek() on unopened file |
a0d0e21e | 2608 | |
96e4d5b1 | 2609 | (W) You tried to use the seek() or sysseek() function on a filehandle that |
2610 | was either never opened or has since been closed. | |
a0d0e21e LW |
2611 | |
2612 | =item select not implemented | |
2613 | ||
2614 | (F) This machine doesn't implement the select() system call. | |
2615 | ||
2616 | =item sem%s not implemented | |
2617 | ||
2618 | (F) You don't have System V semaphore IPC on your system. | |
2619 | ||
2620 | =item semi-panic: attempt to dup freed string | |
2621 | ||
2622 | (S) The internal newSVsv() routine was called to duplicate a scalar | |
2623 | that had previously been marked as free. | |
2624 | ||
2625 | =item Semicolon seems to be missing | |
2626 | ||
2627 | (W) A nearby syntax error was probably caused by a missing semicolon, | |
2628 | or possibly some other missing operator, such as a comma. | |
2629 | ||
2630 | =item Send on closed socket | |
2631 | ||
2632 | (W) The filehandle you're sending to got itself closed sometime before now. | |
2633 | Check your logic flow. | |
2634 | ||
1b1626e4 | 2635 | =item Sequence (? incomplete |
7b8d334a | 2636 | |
1b1626e4 MG |
2637 | (F) A regular expression ended with an incomplete extension (?. |
2638 | See L<perlre>. | |
2639 | ||
a0d0e21e LW |
2640 | =item Sequence (?#... not terminated |
2641 | ||
2642 | (F) A regular expression comment must be terminated by a closing | |
5f05dabc | 2643 | parenthesis. Embedded parentheses aren't allowed. See L<perlre>. |
a0d0e21e LW |
2644 | |
2645 | =item Sequence (?%s...) not implemented | |
2646 | ||
2647 | (F) A proposed regular expression extension has the character reserved | |
2648 | but has not yet been written. See L<perlre>. | |
2649 | ||
2650 | =item Sequence (?%s...) not recognized | |
2651 | ||
2652 | (F) You used a regular expression extension that doesn't make sense. | |
2653 | See L<perlre>. | |
2654 | ||
a5f75d66 AD |
2655 | =item Server error |
2656 | ||
3cdd684c TP |
2657 | This is the error message generally seen in a browser window when trying |
2658 | to run a CGI program (including SSI) over the web. The actual error | |
2659 | text varies widely from server to server. The most frequently-seen | |
2660 | variants are "500 Server error", "Method (something) not permitted", | |
2661 | "Document contains no data", "Premature end of script headers", and | |
2662 | "Did not produce a valid header". | |
9607fc9c | 2663 | |
2664 | B<This is a CGI error, not a Perl error>. | |
2665 | ||
2666 | You need to make sure your script is executable, is accessible by the user | |
2667 | CGI is running the script under (which is probably not the user account you | |
2668 | tested it under), does not rely on any environment variables (like PATH) | |
2669 | from the user it isn't running under, and isn't in a location where the CGI | |
2670 | server can't find it, basically, more or less. Please see the following | |
2671 | for more information: | |
2672 | ||
be94a901 GS |
2673 | http://www.perl.com/CPAN/doc/FAQs/cgi/idiots-guide.html |
2674 | http://www.perl.com/CPAN/doc/FAQs/cgi/perl-cgi-faq.html | |
9607fc9c | 2675 | ftp://rtfm.mit.edu/pub/usenet/news.answers/www/cgi-faq |
2676 | http://hoohoo.ncsa.uiuc.edu/cgi/interface.html | |
2677 | http://www-genome.wi.mit.edu/WWW/faqs/www-security-faq.html | |
a5f75d66 | 2678 | |
be94a901 GS |
2679 | You should also look at L<perlfaq9>. |
2680 | ||
a0d0e21e LW |
2681 | =item setegid() not implemented |
2682 | ||
8b1a09fc | 2683 | (F) You tried to assign to C<$)>, and your operating system doesn't support |
a0d0e21e LW |
2684 | the setegid() system call (or equivalent), or at least Configure didn't |
2685 | think so. | |
2686 | ||
2687 | =item seteuid() not implemented | |
2688 | ||
8b1a09fc | 2689 | (F) You tried to assign to C<$E<gt>>, and your operating system doesn't support |
a0d0e21e LW |
2690 | the seteuid() system call (or equivalent), or at least Configure didn't |
2691 | think so. | |
2692 | ||
81777298 GS |
2693 | =item setpgrp can't take arguments |
2694 | ||
2695 | (F) Your system has the setpgrp() from BSD 4.2, which takes no arguments, | |
2696 | unlike POSIX setpgid(), which takes a process ID and process group ID. | |
2697 | ||
a0d0e21e LW |
2698 | =item setrgid() not implemented |
2699 | ||
8b1a09fc | 2700 | (F) You tried to assign to C<$(>, and your operating system doesn't support |
a0d0e21e LW |
2701 | the setrgid() system call (or equivalent), or at least Configure didn't |
2702 | think so. | |
2703 | ||
2704 | =item setruid() not implemented | |
2705 | ||
1f8d2005 | 2706 | (F) You tried to assign to C<$E<lt>>, and your operating system doesn't support |
a0d0e21e LW |
2707 | the setruid() system call (or equivalent), or at least Configure didn't |
2708 | think so. | |
2709 | ||
2710 | =item Setuid/gid script is writable by world | |
2711 | ||
2712 | (F) The setuid emulator won't run a script that is writable by the world, | |
2713 | because the world might have written on it already. | |
2714 | ||
2715 | =item shm%s not implemented | |
2716 | ||
2717 | (F) You don't have System V shared memory IPC on your system. | |
2718 | ||
2719 | =item shutdown() on closed fd | |
2720 | ||
2721 | (W) You tried to do a shutdown on a closed socket. Seems a bit superfluous. | |
2722 | ||
f86702cc | 2723 | =item SIG%s handler "%s" not defined |
a0d0e21e LW |
2724 | |
2725 | (W) The signal handler named in %SIG doesn't, in fact, exist. Perhaps you | |
2726 | put it into the wrong package? | |
2727 | ||
2728 | =item sort is now a reserved word | |
2729 | ||
2730 | (F) An ancient error message that almost nobody ever runs into anymore. | |
2731 | But before sort was a keyword, people sometimes used it as a filehandle. | |
2732 | ||
2733 | =item Sort subroutine didn't return a numeric value | |
2734 | ||
2735 | (F) A sort comparison routine must return a number. You probably blew | |
4633a7c4 | 2736 | it by not using C<E<lt>=E<gt>> or C<cmp>, or by not using them correctly. |
a0d0e21e LW |
2737 | See L<perlfunc/sort>. |
2738 | ||
2739 | =item Sort subroutine didn't return single value | |
2740 | ||
2741 | (F) A sort comparison subroutine may not return a list value with more | |
2742 | or less than one element. See L<perlfunc/sort>. | |
2743 | ||
2744 | =item Split loop | |
2745 | ||
2746 | (P) The split was looping infinitely. (Obviously, a split shouldn't iterate | |
2747 | more times than there are characters of input, which is what happened.) | |
2748 | See L<perlfunc/split>. | |
2749 | ||
8b1a09fc | 2750 | =item Stat on unopened file E<lt>%sE<gt> |
a0d0e21e LW |
2751 | |
2752 | (W) You tried to use the stat() function (or an equivalent file test) | |
54310121 | 2753 | on a filehandle that was either never opened or has since been closed. |
a0d0e21e LW |
2754 | |
2755 | =item Statement unlikely to be reached | |
2756 | ||
2757 | (W) You did an exec() with some statement after it other than a die(). | |
2758 | This is almost always an error, because exec() never returns unless | |
2759 | there was a failure. You probably wanted to use system() instead, | |
2760 | which does return. To suppress this warning, put the exec() in a block | |
2761 | by itself. | |
2762 | ||
17feb5d5 DD |
2763 | =item Strange *+?{} on zero-length expression |
2764 | ||
2765 | (W) You applied a regular expression quantifier in a place where it | |
2766 | makes no sense, such as on a zero-width assertion. | |
2767 | Try putting the quantifier inside the assertion instead. For example, | |
2768 | the way to match "abc" provided that it is followed by three | |
2769 | repetitions of "xyz" is C</abc(?=(?:xyz){3})/>, not C</abc(?=xyz){3}/>. | |
2770 | ||
e7ea3e70 IZ |
2771 | =item Stub found while resolving method `%s' overloading `%s' in package `%s' |
2772 | ||
2773 | (P) Overloading resolution over @ISA tree may be broken by importation stubs. | |
2774 | Stubs should never be implicitely created, but explicit calls to C<can> | |
2775 | may break this. | |
2776 | ||
a0d0e21e LW |
2777 | =item Subroutine %s redefined |
2778 | ||
2779 | (W) You redefined a subroutine. To suppress this warning, say | |
2780 | ||
2781 | { | |
4438c4b7 | 2782 | no warnings; |
a0d0e21e LW |
2783 | eval "sub name { ... }"; |
2784 | } | |
2785 | ||
2786 | =item Substitution loop | |
2787 | ||
2788 | (P) The substitution was looping infinitely. (Obviously, a | |
2789 | substitution shouldn't iterate more times than there are characters of | |
68dc0745 | 2790 | input, which is what happened.) See the discussion of substitution in |
5f05dabc | 2791 | L<perlop/"Quote and Quote-like Operators">. |
a0d0e21e LW |
2792 | |
2793 | =item Substitution pattern not terminated | |
2794 | ||
2795 | (F) The lexer couldn't find the interior delimiter of a s/// or s{}{} | |
2796 | construct. Remember that bracketing delimiters count nesting level. | |
fb73857a | 2797 | Missing the leading C<$> from variable C<$s> may cause this error. |
a0d0e21e LW |
2798 | |
2799 | =item Substitution replacement not terminated | |
2800 | ||
2801 | (F) The lexer couldn't find the final delimiter of a s/// or s{}{} | |
2802 | construct. Remember that bracketing delimiters count nesting level. | |
fb73857a | 2803 | Missing the leading C<$> from variable C<$s> may cause this error. |
a0d0e21e LW |
2804 | |
2805 | =item substr outside of string | |
2806 | ||
3e3baf6d TB |
2807 | (S),(W) You tried to reference a substr() that pointed outside of a |
2808 | string. That is, the absolute value of the offset was larger than the | |
2809 | length of the string. See L<perlfunc/substr>. This warning is | |
2810 | mandatory if substr is used in an lvalue context (as the left hand side | |
2811 | of an assignment or as a subroutine argument for example). | |
a0d0e21e | 2812 | |
f86702cc | 2813 | =item suidperl is no longer needed since %s |
a0d0e21e LW |
2814 | |
2815 | (F) Your Perl was compiled with B<-D>SETUID_SCRIPTS_ARE_SECURE_NOW, but a | |
2816 | version of the setuid emulator somehow got run anyway. | |
2817 | ||
85ab1d1d JH |
2818 | =item switching effective %s is not implemented |
2819 | ||
2820 | (F) While under the C<use filetest> pragma, we cannot switch the | |
2821 | real and effective uids or gids. | |
2822 | ||
a0d0e21e LW |
2823 | =item syntax error |
2824 | ||
2825 | (F) Probably means you had a syntax error. Common reasons include: | |
2826 | ||
2827 | A keyword is misspelled. | |
2828 | A semicolon is missing. | |
2829 | A comma is missing. | |
2830 | An opening or closing parenthesis is missing. | |
2831 | An opening or closing brace is missing. | |
2832 | A closing quote is missing. | |
2833 | ||
2834 | Often there will be another error message associated with the syntax | |
2835 | error giving more information. (Sometimes it helps to turn on B<-w>.) | |
2836 | The error message itself often tells you where it was in the line when | |
2837 | it decided to give up. Sometimes the actual error is several tokens | |
5f05dabc | 2838 | before this, because Perl is good at understanding random input. |
a0d0e21e LW |
2839 | Occasionally the line number may be misleading, and once in a blue moon |
2840 | the only way to figure out what's triggering the error is to call | |
2841 | C<perl -c> repeatedly, chopping away half the program each time to see | |
2842 | if the error went away. Sort of the cybernetic version of S<20 questions>. | |
2843 | ||
cb1a09d0 AD |
2844 | =item syntax error at line %d: `%s' unexpected |
2845 | ||
8b1a09fc | 2846 | (A) You've accidentally run your script through the Bourne shell |
3a52c276 | 2847 | instead of Perl. Check the #! line, or manually feed your script |
cb1a09d0 AD |
2848 | into Perl yourself. |
2849 | ||
6087ac44 | 2850 | =item System V %s is not implemented on this machine |
a0d0e21e | 2851 | |
6087ac44 JH |
2852 | (F) You tried to do something with a function beginning with "sem", |
2853 | "shm", or "msg" but that System V IPC is not implemented in your | |
2854 | machine. In some machines the functionality can exist but be | |
2855 | unconfigured. Consult your system support. | |
a0d0e21e LW |
2856 | |
2857 | =item Syswrite on closed filehandle | |
2858 | ||
2859 | (W) The filehandle you're writing to got itself closed sometime before now. | |
2860 | Check your logic flow. | |
2861 | ||
fc36a67e | 2862 | =item Target of goto is too deeply nested |
2863 | ||
2864 | (F) You tried to use C<goto> to reach a label that was too deeply | |
2865 | nested for Perl to reach. Perl is doing you a favor by refusing. | |
2866 | ||
8903cb82 | 2867 | =item tell() on unopened file |
a0d0e21e | 2868 | |
8903cb82 | 2869 | (W) You tried to use the tell() function on a filehandle that was either |
2870 | never opened or has since been closed. | |
a0d0e21e | 2871 | |
8b1a09fc | 2872 | =item Test on unopened file E<lt>%sE<gt> |
a0d0e21e LW |
2873 | |
2874 | (W) You tried to invoke a file test operator on a filehandle that isn't | |
2875 | open. Check your logic. See also L<perlfunc/-X>. | |
2876 | ||
2877 | =item That use of $[ is unsupported | |
2878 | ||
8b1a09fc | 2879 | (F) Assignment to C<$[> is now strictly circumscribed, and interpreted as |
5f05dabc | 2880 | a compiler directive. You may say only one of |
a0d0e21e LW |
2881 | |
2882 | $[ = 0; | |
2883 | $[ = 1; | |
2884 | ... | |
2885 | local $[ = 0; | |
2886 | local $[ = 1; | |
2887 | ... | |
2888 | ||
2889 | This is to prevent the problem of one module changing the array base | |
2890 | out from under another module inadvertently. See L<perlvar/$[>. | |
2891 | ||
2892 | =item The %s function is unimplemented | |
2893 | ||
2894 | The function indicated isn't implemented on this architecture, according | |
2895 | to the probings of Configure. | |
2896 | ||
f86702cc | 2897 | =item The crypt() function is unimplemented due to excessive paranoia |
a0d0e21e LW |
2898 | |
2899 | (F) Configure couldn't find the crypt() function on your machine, | |
2900 | probably because your vendor didn't supply it, probably because they | |
8b1a09fc | 2901 | think the U.S. Government thinks it's a secret, or at least that they |
a0d0e21e LW |
2902 | will continue to pretend that it is. And if you quote me on that, I |
2903 | will deny it. | |
2904 | ||
2905 | =item The stat preceding C<-l _> wasn't an lstat | |
2906 | ||
2907 | (F) It makes no sense to test the current stat buffer for symbolic linkhood | |
2908 | if the last stat that wrote to the stat buffer already went past | |
2909 | the symlink to get to the real file. Use an actual filename instead. | |
2910 | ||
437784d6 | 2911 | =item This Perl can't reset CRTL environ elements (%s) |
f675dbe5 CB |
2912 | |
2913 | =item This Perl can't set CRTL environ elements (%s=%s) | |
2914 | ||
2915 | (W) Warnings peculiar to VMS. You tried to change or delete an element | |
2916 | of the CRTL's internal environ array, but your copy of Perl wasn't | |
2917 | built with a CRTL that contained the setenv() function. You'll need to | |
2918 | rebuild Perl with a CRTL that does, or redefine F<PERL_ENV_TABLES> (see | |
2919 | L<perlvms>) so that the environ array isn't the target of the change to | |
2920 | %ENV which produced the warning. | |
2921 | ||
a0d0e21e LW |
2922 | =item times not implemented |
2923 | ||
2924 | (F) Your version of the C library apparently doesn't do times(). I suspect | |
2925 | you're not running on Unix. | |
2926 | ||
2927 | =item Too few args to syscall | |
2928 | ||
2929 | (F) There has to be at least one argument to syscall() to specify the | |
2930 | system call to call, silly dilly. | |
2931 | ||
9607fc9c | 2932 | =item Too late for "B<-T>" option |
2933 | ||
2934 | (X) The #! line (or local equivalent) in a Perl script contains the | |
8cc95fdb | 2935 | B<-T> option, but Perl was not invoked with B<-T> in its command line. |
2936 | This is an error because, by the time Perl discovers a B<-T> in a | |
2937 | script, it's too late to properly taint everything from the environment. | |
2938 | So Perl gives up. | |
f86702cc | 2939 | |
9607fc9c | 2940 | If the Perl script is being executed as a command using the #! |
2941 | mechanism (or its local equivalent), this error can usually be fixed | |
2942 | by editing the #! line so that the B<-T> option is a part of Perl's | |
2943 | first argument: e.g. change C<perl -n -T> to C<perl -T -n>. | |
f86702cc | 2944 | |
9607fc9c | 2945 | If the Perl script is being executed as C<perl scriptname>, then the |
2946 | B<-T> option must appear on the command line: C<perl -T scriptname>. | |
f86702cc | 2947 | |
8cc95fdb | 2948 | =item Too late for "-%s" option |
2949 | ||
2950 | (X) The #! line (or local equivalent) in a Perl script contains the | |
2951 | B<-M> or B<-m> option. This is an error because B<-M> and B<-m> options | |
2952 | are not intended for use inside scripts. Use the C<use> pragma instead. | |
2953 | ||
cb1a09d0 AD |
2954 | =item Too many ('s |
2955 | ||
2956 | =item Too many )'s | |
2957 | ||
2958 | (A) You've accidentally run your script through B<csh> instead | |
3a52c276 CS |
2959 | of Perl. Check the #! line, or manually feed your script into |
2960 | Perl yourself. | |
cb1a09d0 | 2961 | |
a0d0e21e LW |
2962 | =item Too many args to syscall |
2963 | ||
5f05dabc | 2964 | (F) Perl supports a maximum of only 14 args to syscall(). |
a0d0e21e LW |
2965 | |
2966 | =item Too many arguments for %s | |
2967 | ||
2968 | (F) The function requires fewer arguments than you specified. | |
2969 | ||
2970 | =item trailing \ in regexp | |
2971 | ||
2972 | (F) The regular expression ends with an unbackslashed backslash. Backslash | |
2973 | it. See L<perlre>. | |
2974 | ||
2c268ad5 | 2975 | =item Transliteration pattern not terminated |
a0d0e21e LW |
2976 | |
2977 | (F) The lexer couldn't find the interior delimiter of a tr/// or tr[][] | |
fb73857a | 2978 | or y/// or y[][] construct. Missing the leading C<$> from variables |
2979 | C<$tr> or C<$y> may cause this error. | |
a0d0e21e | 2980 | |
2c268ad5 | 2981 | =item Transliteration replacement not terminated |
a0d0e21e LW |
2982 | |
2983 | (F) The lexer couldn't find the final delimiter of a tr/// or tr[][] | |
2984 | construct. | |
2985 | ||
2986 | =item truncate not implemented | |
2987 | ||
2988 | (F) Your machine doesn't implement a file truncation mechanism that | |
2989 | Configure knows about. | |
2990 | ||
2991 | =item Type of arg %d to %s must be %s (not %s) | |
2992 | ||
2993 | (F) This function requires the argument in that position to be of a | |
8b1a09fc | 2994 | certain type. Arrays must be @NAME or C<@{EXPR}>. Hashes must be |
2995 | %NAME or C<%{EXPR}>. No implicit dereferencing is allowed--use the | |
a0d0e21e LW |
2996 | {EXPR} forms as an explicit dereference. See L<perlref>. |
2997 | ||
2998 | =item umask: argument is missing initial 0 | |
2999 | ||
eec2d3df GS |
3000 | (W) A umask of 222 is incorrect. It should be 0222, because octal |
3001 | literals always start with 0 in Perl, as in C. | |
3002 | ||
3003 | =item umask not implemented | |
3004 | ||
3005 | (F) Your machine doesn't implement the umask function and you tried | |
3006 | to use it to restrict permissions for yourself (EXPR & 0700). | |
a0d0e21e | 3007 | |
4633a7c4 LW |
3008 | =item Unable to create sub named "%s" |
3009 | ||
3010 | (F) You attempted to create or access a subroutine with an illegal name. | |
3011 | ||
a0d0e21e LW |
3012 | =item Unbalanced context: %d more PUSHes than POPs |
3013 | ||
3014 | (W) The exit code detected an internal inconsistency in how many execution | |
3015 | contexts were entered and left. | |
3016 | ||
3017 | =item Unbalanced saves: %d more saves than restores | |
3018 | ||
3019 | (W) The exit code detected an internal inconsistency in how many | |
3020 | values were temporarily localized. | |
3021 | ||
3022 | =item Unbalanced scopes: %d more ENTERs than LEAVEs | |
3023 | ||
3024 | (W) The exit code detected an internal inconsistency in how many blocks | |
3025 | were entered and left. | |
3026 | ||
3027 | =item Unbalanced tmps: %d more allocs than frees | |
3028 | ||
3029 | (W) The exit code detected an internal inconsistency in how many mortal | |
3030 | scalars were allocated and freed. | |
3031 | ||
3032 | =item Undefined format "%s" called | |
3033 | ||
3034 | (F) The format indicated doesn't seem to exist. Perhaps it's really in | |
3035 | another package? See L<perlform>. | |
3036 | ||
3037 | =item Undefined sort subroutine "%s" called | |
3038 | ||
3039 | (F) The sort comparison routine specified doesn't seem to exist. Perhaps | |
3040 | it's in a different package? See L<perlfunc/sort>. | |
3041 | ||
3042 | =item Undefined subroutine &%s called | |
3043 | ||
3044 | (F) The subroutine indicated hasn't been defined, or if it was, it | |
3045 | has since been undefined. | |
3046 | ||
3047 | =item Undefined subroutine called | |
3048 | ||
3049 | (F) The anonymous subroutine you're trying to call hasn't been defined, | |
3050 | or if it was, it has since been undefined. | |
3051 | ||
3052 | =item Undefined subroutine in sort | |
3053 | ||
3054 | (F) The sort comparison routine specified is declared but doesn't seem to | |
3055 | have been defined yet. See L<perlfunc/sort>. | |
3056 | ||
4633a7c4 LW |
3057 | =item Undefined top format "%s" called |
3058 | ||
3059 | (F) The format indicated doesn't seem to exist. Perhaps it's really in | |
3060 | another package? See L<perlform>. | |
3061 | ||
20408e3c GS |
3062 | =item Undefined value assigned to typeglob |
3063 | ||
3064 | (W) An undefined value was assigned to a typeglob, a la C<*foo = undef>. | |
3065 | This does nothing. It's possible that you really mean C<undef *foo>. | |
3066 | ||
a0d0e21e LW |
3067 | =item unexec of %s into %s failed! |
3068 | ||
3069 | (F) The unexec() routine failed for some reason. See your local FSF | |
3070 | representative, who probably put it there in the first place. | |
3071 | ||
3072 | =item Unknown BYTEORDER | |
3073 | ||
5f05dabc | 3074 | (F) There are no byte-swapping functions for a machine with this byte order. |
a0d0e21e | 3075 | |
6170680b IZ |
3076 | =item Unknown open() mode '%s' |
3077 | ||
437784d6 GS |
3078 | (F) The second argument of 3-argument open() is not among the list |
3079 | of valid modes: C<L<lt>>, C<L<gt>>, C<E<gt>E<gt>>, C<+L<lt>>, | |
3080 | C<+L<gt>>, C<+E<gt>E<gt>>, C<-|>, C<|->. | |
6170680b | 3081 | |
f675dbe5 CB |
3082 | =item Unknown process %x sent message to prime_env_iter: %s |
3083 | ||
3084 | (P) An error peculiar to VMS. Perl was reading values for %ENV before | |
3085 | iterating over it, and someone else stuck a message in the stream of | |
3086 | data Perl expected. Someone's very confused, or perhaps trying to | |
3087 | subvert Perl's population of %ENV for nefarious purposes. | |
3088 | ||
a0d0e21e LW |
3089 | =item unmatched () in regexp |
3090 | ||
3091 | (F) Unbackslashed parentheses must always be balanced in regular | |
3092 | expressions. If you're a vi user, the % key is valuable for finding | |
5f05dabc | 3093 | the matching parenthesis. See L<perlre>. |
a0d0e21e | 3094 | |
d98d5fff | 3095 | =item Unmatched right %s bracket |
a0d0e21e | 3096 | |
d98d5fff GS |
3097 | (F) The lexer counted more closing curly or square brackets than |
3098 | opening ones, so you're probably missing a matching opening bracket. | |
3099 | As a general rule, you'll find the missing one (so to speak) near the | |
3100 | place you were last editing. | |
a0d0e21e LW |
3101 | |
3102 | =item unmatched [] in regexp | |
3103 | ||
3104 | (F) The brackets around a character class must match. If you wish to | |
3105 | include a closing bracket in a character class, backslash it or put it first. | |
3106 | See L<perlre>. | |
3107 | ||
3108 | =item Unquoted string "%s" may clash with future reserved word | |
3109 | ||
54310121 | 3110 | (W) You used a bareword that might someday be claimed as a reserved word. |
a0d0e21e LW |
3111 | It's best to put such a word in quotes, or capitalize it somehow, or insert |
3112 | an underbar into it. You might also declare it as a subroutine. | |
3113 | ||
54310121 | 3114 | =item Unrecognized character %s |
a0d0e21e | 3115 | |
54310121 | 3116 | (F) The Perl parser has no idea what to do with the specified character |
3117 | in your Perl script (or eval). Perhaps you tried to run a compressed | |
3118 | script, a binary program, or a directory as a Perl program. | |
a0d0e21e | 3119 | |
c9f97d15 IZ |
3120 | =item Unrecognized escape \\%c passed through |
3121 | ||
3122 | (W) You used a backslash-character combination which is not recognized | |
3123 | by Perl. | |
3124 | ||
a0d0e21e LW |
3125 | =item Unrecognized signal name "%s" |
3126 | ||
3127 | (F) You specified a signal name to the kill() function that was not recognized. | |
3128 | Say C<kill -l> in your shell to see the valid signal names on your system. | |
3129 | ||
90248788 | 3130 | =item Unrecognized switch: -%s (-h will show valid options) |
a0d0e21e LW |
3131 | |
3132 | (F) You specified an illegal option to Perl. Don't do that. | |
3133 | (If you think you didn't do that, check the #! line to see if it's | |
3134 | supplying the bad switch on your behalf.) | |
3135 | ||
3136 | =item Unsuccessful %s on filename containing newline | |
3137 | ||
3138 | (W) A file operation was attempted on a filename, and that operation | |
3139 | failed, PROBABLY because the filename contained a newline, PROBABLY | |
54310121 | 3140 | because you forgot to chop() or chomp() it off. See L<perlfunc/chomp>. |
a0d0e21e LW |
3141 | |
3142 | =item Unsupported directory function "%s" called | |
3143 | ||
3144 | (F) Your machine doesn't support opendir() and readdir(). | |
3145 | ||
54310121 | 3146 | =item Unsupported function fork |
3147 | ||
3148 | (F) Your version of executable does not support forking. | |
3149 | ||
3150 | Note that under some systems, like OS/2, there may be different flavors of | |
3151 | Perl executables, some of which may support fork, some not. Try changing | |
3152 | the name you call Perl by to C<perl_>, C<perl__>, and so on. | |
3153 | ||
a0d0e21e LW |
3154 | =item Unsupported function %s |
3155 | ||
7b8d334a | 3156 | (F) This machine doesn't implement the indicated function, apparently. |
a0d0e21e LW |
3157 | At least, Configure doesn't think so. |
3158 | ||
3159 | =item Unsupported socket function "%s" called | |
3160 | ||
3161 | (F) Your machine doesn't support the Berkeley socket mechanism, or at | |
3162 | least that's what Configure thought. | |
3163 | ||
8b1a09fc | 3164 | =item Unterminated E<lt>E<gt> operator |
a0d0e21e LW |
3165 | |
3166 | (F) The lexer saw a left angle bracket in a place where it was expecting | |
3167 | a term, so it's looking for the corresponding right angle bracket, and not | |
3168 | finding it. Chances are you left some needed parentheses out earlier in | |
3169 | the line, and you really meant a "less than". | |
3170 | ||
09bef843 SB |
3171 | =item Unterminated attribute parameter in attribute list |
3172 | ||
3173 | (F) The lexer saw an opening (left) parenthesis character while parsing an | |
3174 | attribute list, but the matching closing (right) parenthesis | |
3175 | character was not found. You may need to add (or remove) a backslash | |
3176 | character to get your parentheses to balance. See L<attributes>. | |
3177 | ||
3178 | =item Unterminated attribute list | |
3179 | ||
3180 | (F) The lexer found something other than a simple identifier at the start | |
3181 | of an attribute, and it wasn't a semicolon or the start of a | |
3182 | block. Perhaps you terminated the parameter list of the previous attribute | |
3183 | too soon. See L<attributes>. | |
3184 | ||
a0d0e21e LW |
3185 | =item Use of $# is deprecated |
3186 | ||
8b1a09fc | 3187 | (D) This was an ill-advised attempt to emulate a poorly defined B<awk> feature. |
a0d0e21e LW |
3188 | Use an explicit printf() or sprintf() instead. |
3189 | ||
3190 | =item Use of $* is deprecated | |
3191 | ||
4a6725af | 3192 | (D) This variable magically turned on multi-line pattern matching, both for |
a0d0e21e LW |
3193 | you and for any luckless subroutine that you happen to call. You should |
3194 | use the new C<//m> and C<//s> modifiers now to do that without the dangerous | |
3195 | action-at-a-distance effects of C<$*>. | |
3196 | ||
748a9306 LW |
3197 | =item Use of %s in printf format not supported |
3198 | ||
5f05dabc | 3199 | (F) You attempted to use a feature of printf that is accessible from |
3200 | only C. This usually means there's a better way to do it in Perl. | |
748a9306 | 3201 | |
8b1a09fc | 3202 | =item Use of bare E<lt>E<lt> to mean E<lt>E<lt>"" is deprecated |
4633a7c4 LW |
3203 | |
3204 | (D) You are now encouraged to use the explicitly quoted form if you | |
3fe9a6f1 | 3205 | wish to use an empty line as the terminator of the here-document. |
4633a7c4 | 3206 | |
a0d0e21e LW |
3207 | =item Use of implicit split to @_ is deprecated |
3208 | ||
3209 | (D) It makes a lot of work for the compiler when you clobber a | |
3210 | subroutine's argument list, so it's better if you assign the results of | |
3211 | a split() explicitly to an array (or list). | |
3212 | ||
dc848c6f | 3213 | =item Use of inherited AUTOLOAD for non-method %s() is deprecated |
3214 | ||
5cd24f17 | 3215 | (D) As an (ahem) accidental feature, C<AUTOLOAD> subroutines are looked |
3216 | up as methods (using the C<@ISA> hierarchy) even when the subroutines to | |
3217 | be autoloaded were called as plain functions (e.g. C<Foo::bar()>), not | |
7b8d334a | 3218 | as methods (e.g. C<Foo-E<gt>bar()> or C<$obj-E<gt>bar()>). |
dc848c6f | 3219 | |
3220 | This bug will be rectified in Perl 5.005, which will use method lookup | |
3221 | only for methods' C<AUTOLOAD>s. However, there is a significant base | |
3222 | of existing code that may be using the old behavior. So, as an | |
3223 | interim step, Perl 5.004 issues an optional warning when non-methods | |
3224 | use inherited C<AUTOLOAD>s. | |
3225 | ||
3226 | The simple rule is: Inheritance will not work when autoloading | |
3227 | non-methods. The simple fix for old code is: In any module that used to | |
3228 | depend on inheriting C<AUTOLOAD> for non-methods from a base class named | |
3229 | C<BaseClass>, execute C<*AUTOLOAD = \&BaseClass::AUTOLOAD> during startup. | |
3230 | ||
fb73857a | 3231 | In code that currently says C<use AutoLoader; @ISA = qw(AutoLoader);> you |
3232 | should remove AutoLoader from @ISA and change C<use AutoLoader;> to | |
7b8d334a | 3233 | C<use AutoLoader 'AUTOLOAD';>. |
fb73857a | 3234 | |
85b81015 LW |
3235 | =item Use of reserved word "%s" is deprecated |
3236 | ||
3237 | (D) The indicated bareword is a reserved word. Future versions of perl | |
3238 | may use it as a keyword, so you're better off either explicitly quoting | |
3239 | the word in a manner appropriate for its context of use, or using a | |
3240 | different name altogether. The warning can be suppressed for subroutine | |
3241 | names by either adding a C<&> prefix, or using a package qualifier, | |
3242 | e.g. C<&our()>, or C<Foo::our()>. | |
3243 | ||
dc848c6f | 3244 | =item Use of %s is deprecated |
3245 | ||
3246 | (D) The construct indicated is no longer recommended for use, generally | |
3247 | because there's a better way to do it, and also because the old way has | |
3248 | bad side effects. | |
3249 | ||
a0d0e21e LW |
3250 | =item Use of uninitialized value |
3251 | ||
3252 | (W) An undefined value was used as if it were already defined. It was | |
3253 | interpreted as a "" or a 0, but maybe it was a mistake. To suppress this | |
5311ebfa | 3254 | warning assign a defined value to your variables. |
a0d0e21e | 3255 | |
8202fd39 MG |
3256 | =item Useless use of "re" pragma |
3257 | ||
3258 | (W) You did C<use re;> without any arguments. That isn't very useful. | |
3259 | ||
a0d0e21e LW |
3260 | =item Useless use of %s in void context |
3261 | ||
3262 | (W) You did something without a side effect in a context that does nothing | |
3263 | with the return value, such as a statement that doesn't return a value | |
3264 | from a block, or the left side of a scalar comma operator. Very often | |
3265 | this points not to stupidity on your part, but a failure of Perl to parse | |
3266 | your program the way you thought it would. For example, you'd get this | |
3267 | if you mixed up your C precedence with Python precedence and said | |
3268 | ||
3269 | $one, $two = 1, 2; | |
3270 | ||
3271 | when you meant to say | |
3272 | ||
3273 | ($one, $two) = (1, 2); | |
3274 | ||
748a9306 LW |
3275 | Another common error is to use ordinary parentheses to construct a list |
3276 | reference when you should be using square or curly brackets, for | |
3277 | example, if you say | |
3278 | ||
3279 | $array = (1,2); | |
3280 | ||
3281 | when you should have said | |
3282 | ||
3283 | $array = [1,2]; | |
3284 | ||
3285 | The square brackets explicitly turn a list value into a scalar value, | |
3286 | while parentheses do not. So when a parenthesized list is evaluated in | |
3287 | a scalar context, the comma is treated like C's comma operator, which | |
3288 | throws away the left argument, which is not what you want. See | |
3289 | L<perlref> for more on this. | |
3290 | ||
55497cff | 3291 | =item untie attempted while %d inner references still exist |
3292 | ||
3293 | (W) A copy of the object returned from C<tie> (or C<tied>) was still | |
3294 | valid when C<untie> was called. | |
3295 | ||
68dc0745 | 3296 | =item Value of %s can be "0"; test with defined() |
a6006777 | 3297 | |
68dc0745 | 3298 | (W) In a conditional expression, you used <HANDLE>, <*> (glob), C<each()>, |
3299 | or C<readdir()> as a boolean value. Each of these constructs can return a | |
3300 | value of "0"; that would make the conditional expression false, which is | |
3301 | probably not what you intended. When using these constructs in conditional | |
3302 | expressions, test their values with the C<defined> operator. | |
a6006777 | 3303 | |
f675dbe5 CB |
3304 | =item Value of CLI symbol "%s" too long |
3305 | ||
3306 | (W) A warning peculiar to VMS. Perl tried to read the value of an %ENV | |
3307 | element from a CLI symbol table, and found a resultant string longer | |
3308 | than 1024 characters. The return value has been truncated to 1024 | |
3309 | characters. | |
3310 | ||
9607fc9c | 3311 | =item Variable "%s" is not imported%s |
4633a7c4 LW |
3312 | |
3313 | (F) While "use strict" in effect, you referred to a global variable | |
3314 | that you apparently thought was imported from another module, because | |
3315 | something else of the same name (usually a subroutine) is exported | |
3316 | by that module. It usually means you put the wrong funny character | |
3317 | on the front of your variable. | |
3318 | ||
44a8e56a | 3319 | =item Variable "%s" may be unavailable |
3320 | ||
3321 | (W) An inner (nested) I<anonymous> subroutine is inside a I<named> | |
3322 | subroutine, and outside that is another subroutine; and the anonymous | |
3323 | (innermost) subroutine is referencing a lexical variable defined in | |
3324 | the outermost subroutine. For example: | |
3325 | ||
3326 | sub outermost { my $a; sub middle { sub { $a } } } | |
3327 | ||
3328 | If the anonymous subroutine is called or referenced (directly or | |
3329 | indirectly) from the outermost subroutine, it will share the variable | |
3330 | as you would expect. But if the anonymous subroutine is called or | |
3331 | referenced when the outermost subroutine is not active, it will see | |
3332 | the value of the shared variable as it was before and during the | |
3333 | *first* call to the outermost subroutine, which is probably not what | |
3334 | you want. | |
3335 | ||
3336 | In these circumstances, it is usually best to make the middle | |
3337 | subroutine anonymous, using the C<sub {}> syntax. Perl has specific | |
3338 | support for shared variables in nested anonymous subroutines; a named | |
3339 | subroutine in between interferes with this feature. | |
3340 | ||
3341 | =item Variable "%s" will not stay shared | |
3342 | ||
3343 | (W) An inner (nested) I<named> subroutine is referencing a lexical | |
3344 | variable defined in an outer subroutine. | |
3345 | ||
3346 | When the inner subroutine is called, it will probably see the value of | |
3347 | the outer subroutine's variable as it was before and during the | |
3348 | *first* call to the outer subroutine; in this case, after the first | |
3349 | call to the outer subroutine is complete, the inner and outer | |
3350 | subroutines will no longer share a common value for the variable. In | |
3351 | other words, the variable will no longer be shared. | |
3352 | ||
3353 | Furthermore, if the outer subroutine is anonymous and references a | |
3354 | lexical variable outside itself, then the outer and inner subroutines | |
3355 | will I<never> share the given variable. | |
3356 | ||
3357 | This problem can usually be solved by making the inner subroutine | |
3358 | anonymous, using the C<sub {}> syntax. When inner anonymous subs that | |
3359 | reference variables in outer subroutines are called or referenced, | |
54310121 | 3360 | they are automatically rebound to the current values of such |
44a8e56a | 3361 | variables. |
3362 | ||
f86702cc | 3363 | =item Variable syntax |
cb1a09d0 AD |
3364 | |
3365 | (A) You've accidentally run your script through B<csh> instead | |
3a52c276 CS |
3366 | of Perl. Check the #! line, or manually feed your script into |
3367 | Perl yourself. | |
cb1a09d0 | 3368 | |
084610c0 GS |
3369 | =item Version number must be a constant number |
3370 | ||
3371 | (P) The attempt to translate a C<use Module n.n LIST> statement into | |
3372 | its equivalent C<BEGIN> block found an internal inconsistency with | |
3373 | the version number. | |
3374 | ||
3e6e419a JH |
3375 | =item perl: warning: Setting locale failed. |
3376 | ||
3377 | (S) The whole warning message will look something like: | |
3378 | ||
3379 | perl: warning: Setting locale failed. | |
3380 | perl: warning: Please check that your locale settings: | |
3381 | LC_ALL = "En_US", | |
3382 | LANG = (unset) | |
3383 | are supported and installed on your system. | |
3384 | perl: warning: Falling back to the standard locale ("C"). | |
3385 | ||
3386 | Exactly what were the failed locale settings varies. In the above the | |
3387 | settings were that the LC_ALL was "En_US" and the LANG had no value. | |
3388 | This error means that Perl detected that you and/or your system | |
3389 | administrator have set up the so-called variable system but Perl could | |
3390 | not use those settings. This was not dead serious, fortunately: there | |
3391 | is a "default locale" called "C" that Perl can and will use, the | |
3392 | script will be run. Before you really fix the problem, however, you | |
3393 | will get the same error message each time you run Perl. How to really | |
3394 | fix the problem can be found in L<perllocale> section B<LOCALE PROBLEMS>. | |
3395 | ||
7e1af8bc | 3396 | =item Warning: something's wrong |
5f05dabc | 3397 | |
3398 | (W) You passed warn() an empty string (the equivalent of C<warn "">) or | |
3399 | you called it with no args and C<$_> was empty. | |
3400 | ||
f86702cc | 3401 | =item Warning: unable to close filehandle %s properly |
a0d0e21e | 3402 | |
8b1a09fc | 3403 | (S) The implicit close() done by an open() got an error indication on the |
5f05dabc | 3404 | close(). This usually indicates your file system ran out of disk space. |
a0d0e21e | 3405 | |
5f05dabc | 3406 | =item Warning: Use of "%s" without parentheses is ambiguous |
a0d0e21e LW |
3407 | |
3408 | (S) You wrote a unary operator followed by something that looks like a | |
3409 | binary operator that could also have been interpreted as a term or | |
3410 | unary operator. For instance, if you know that the rand function | |
3411 | has a default argument of 1.0, and you write | |
3412 | ||
3413 | rand + 5; | |
3414 | ||
3415 | you may THINK you wrote the same thing as | |
3416 | ||
3417 | rand() + 5; | |
3418 | ||
3419 | but in actual fact, you got | |
3420 | ||
3421 | rand(+5); | |
3422 | ||
5f05dabc | 3423 | So put in parentheses to say what you really mean. |
a0d0e21e | 3424 | |
af8c498a | 3425 | =item Write on closed filehandle %s |
a0d0e21e LW |
3426 | |
3427 | (W) The filehandle you're writing to got itself closed sometime before now. | |
3428 | Check your logic flow. | |
3429 | ||
3430 | =item X outside of string | |
3431 | ||
3432 | (F) You had a pack template that specified a relative position before | |
3433 | the beginning of the string being unpacked. See L<perlfunc/pack>. | |
3434 | ||
3435 | =item x outside of string | |
3436 | ||
3437 | (F) You had a pack template that specified a relative position after | |
3438 | the end of the string being unpacked. See L<perlfunc/pack>. | |
3439 | ||
3440 | =item Xsub "%s" called in sort | |
3441 | ||
3442 | (F) The use of an external subroutine as a sort comparison is not yet supported. | |
3443 | ||
3444 | =item Xsub called in sort | |
3445 | ||
3446 | (F) The use of an external subroutine as a sort comparison is not yet supported. | |
3447 | ||
3448 | =item You can't use C<-l> on a filehandle | |
3449 | ||
3450 | (F) A filehandle represents an opened file, and when you opened the file it | |
3451 | already went past any symlink you are presumably trying to look for. | |
3452 | Use a filename instead. | |
3453 | ||
3454 | =item YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET! | |
3455 | ||
5f05dabc | 3456 | (F) And you probably never will, because you probably don't have the |
a0d0e21e LW |
3457 | sources to your kernel, and your vendor probably doesn't give a rip |
3458 | about what you want. Your best bet is to use the wrapsuid script in | |
3459 | the eg directory to put a setuid C wrapper around your script. | |
3460 | ||
3461 | =item You need to quote "%s" | |
3462 | ||
3463 | (W) You assigned a bareword as a signal handler name. Unfortunately, you | |
3464 | already have a subroutine of that name declared, which means that Perl 5 | |
3465 | will try to call the subroutine when the assignment is executed, which is | |
3466 | probably not what you want. (If it IS what you want, put an & in front.) | |
3467 | ||
3468 | =item [gs]etsockopt() on closed fd | |
3469 | ||
3470 | (W) You tried to get or set a socket option on a closed socket. | |
3471 | Did you forget to check the return value of your socket() call? | |
3472 | See L<perlfunc/getsockopt>. | |
3473 | ||
3474 | =item \1 better written as $1 | |
3475 | ||
3476 | (W) Outside of patterns, backreferences live on as variables. The use | |
5f05dabc | 3477 | of backslashes is grandfathered on the right-hand side of a |
a0d0e21e LW |
3478 | substitution, but stylistically it's better to use the variable form |
3479 | because other Perl programmers will expect it, and it works better | |
3480 | if there are more than 9 backreferences. | |
3481 | ||
8b1a09fc | 3482 | =item '|' and 'E<lt>' may not both be specified on command line |
748a9306 LW |
3483 | |
3484 | (F) An error peculiar to VMS. Perl does its own command line redirection, and | |
3485 | found that STDIN was a pipe, and that you also tried to redirect STDIN using | |
8b1a09fc | 3486 | 'E<lt>'. Only one STDIN stream to a customer, please. |
748a9306 | 3487 | |
8b1a09fc | 3488 | =item '|' and 'E<gt>' may not both be specified on command line |
748a9306 LW |
3489 | |
3490 | (F) An error peculiar to VMS. Perl does its own command line redirection, and | |
3491 | thinks you tried to redirect stdout both to a file and into a pipe to another | |
3492 | command. You need to choose one or the other, though nothing's stopping you | |
3493 | from piping into a program or Perl script which 'splits' output into two | |
3494 | streams, such as | |
3495 | ||
3496 | open(OUT,">$ARGV[0]") or die "Can't write to $ARGV[0]: $!"; | |
3497 | while (<STDIN>) { | |
3498 | print; | |
3499 | print OUT; | |
3500 | } | |
3501 | close OUT; | |
3502 | ||
774d564b | 3503 | =item Got an error from DosAllocMem |
33c8a3fe | 3504 | |
774d564b | 3505 | (P) An error peculiar to OS/2. Most probably you're using an obsolete |
3506 | version of Perl, and this should not happen anyway. | |
33c8a3fe IZ |
3507 | |
3508 | =item Malformed PERLLIB_PREFIX | |
3509 | ||
dc848c6f | 3510 | (F) An error peculiar to OS/2. PERLLIB_PREFIX should be of the form |
33c8a3fe IZ |
3511 | |
3512 | prefix1;prefix2 | |
3513 | ||
3514 | or | |
3515 | ||
3516 | prefix1 prefix2 | |
3517 | ||
dc848c6f | 3518 | with nonempty prefix1 and prefix2. If C<prefix1> is indeed a prefix |
3519 | of a builtin library search path, prefix2 is substituted. The error | |
3520 | may appear if components are not found, or are too long. See | |
3521 | "PERLLIB_PREFIX" in F<README.os2>. | |
33c8a3fe IZ |
3522 | |
3523 | =item PERL_SH_DIR too long | |
3524 | ||
54310121 | 3525 | (F) An error peculiar to OS/2. PERL_SH_DIR is the directory to find the |
dc848c6f | 3526 | C<sh>-shell in. See "PERL_SH_DIR" in F<README.os2>. |
33c8a3fe IZ |
3527 | |
3528 | =item Process terminated by SIG%s | |
3529 | ||
3530 | (W) This is a standard message issued by OS/2 applications, while *nix | |
dc848c6f | 3531 | applications die in silence. It is considered a feature of the OS/2 |
3532 | port. One can easily disable this by appropriate sighandlers, see | |
3533 | L<perlipc/"Signals">. See also "Process terminated by SIGTERM/SIGINT" | |
3534 | in F<README.os2>. | |
33c8a3fe | 3535 | |
a0d0e21e LW |
3536 | =back |
3537 |