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). | |
15 | (X) A very fatal error (non-trappable). | |
16 | ||
748a9306 LW |
17 | Optional warnings are enabled by using the B<-w> switch. Warnings may |
18 | be captured by setting C<$^Q> to a reference to a routine that will be | |
19 | called on each warning instead of printing it. See L<perlvar>. | |
20 | Trappable errors may be trapped using the eval operator. See | |
21 | L<perlfunc/eval>. | |
a0d0e21e LW |
22 | |
23 | Some of these messages are generic. Spots that vary are denoted with a %s, | |
24 | just as in a printf format. Note that some message start with a %s! | |
25 | The symbols C<"%-?@> sort before the letters, while C<[> and C<\> sort after. | |
26 | ||
27 | =over 4 | |
28 | ||
29 | =item "my" variable %s can't be in a package | |
30 | ||
31 | (F) Lexically scoped variables aren't in a package, so it doesn't make sense | |
32 | to try to declare one with a package qualifier on the front. Use local() | |
33 | if you want to localize a package variable. | |
34 | ||
35 | =item "no" not allowed in expression | |
36 | ||
37 | (F) The "no" keyword is recognized and executed at compile time, and returns | |
38 | no useful value. See L<perlmod>. | |
39 | ||
40 | =item "use" not allowed in expression | |
41 | ||
42 | (F) The "use" keyword is recognized and executed at compile time, and returns | |
43 | no useful value. See L<perlmod>. | |
44 | ||
45 | =item % may only be used in unpack | |
46 | ||
47 | (F) You can't pack a string by supplying a checksum, since the | |
48 | checksumming process loses information, and you can't go the other | |
49 | way. See L<perlfunc/unpack>. | |
50 | ||
51 | =item %s (...) interpreted as function | |
52 | ||
53 | (W) You've run afoul of the rule that says that any list operator followed | |
54 | by parentheses turns into a function, with all the list operators arguments | |
55 | found inside the parens. See L<perlop/Terms and List Operators (Leftward)>. | |
56 | ||
57 | =item %s argument is not a HASH element | |
58 | ||
59 | (F) The argument to delete() or exists() must be a hash element, such as | |
60 | ||
61 | $foo{$bar} | |
62 | $ref->[12]->{"susie"} | |
63 | ||
64 | =item %s did not return a true value | |
65 | ||
66 | (F) A required (or used) file must return a true value to indicate that | |
67 | it compiled correctly and ran its initialization code correctly. It's | |
68 | traditional to end such a file with a "1;", though any true value would | |
69 | do. See L<perlfunc/require>. | |
70 | ||
71 | =item %s found where operator expected | |
72 | ||
73 | (S) The Perl lexer knows whether to expect a term or an operator. If it | |
74 | sees what it knows to be a term when it was expecting to see an operator, | |
75 | it gives you this warning. Usually it indicates that an operator or | |
76 | delimiter was omitted, such as a semicolon. | |
77 | ||
78 | =item %s had compilation errors. | |
79 | ||
80 | (F) The final summary message when a C<perl -c> fails. | |
81 | ||
82 | =item %s has too many errors. | |
83 | ||
84 | (F) The parser has given up trying to parse the program after 10 errors. | |
85 | Further error messages would likely be uninformative. | |
86 | ||
87 | =item %s matches null string many times | |
88 | ||
89 | (W) The pattern you've specified would be an infinite loop if the | |
90 | regular expression engine didn't specifically check for that. See L<perlre>. | |
91 | ||
92 | =item %s never introduced | |
93 | ||
94 | (S) The symbol in question was declared but somehow went out of scope | |
95 | before it could possibly have been used. | |
96 | ||
97 | =item %s syntax OK | |
98 | ||
99 | (F) The final summary message when a C<perl -c> succeeds. | |
100 | ||
101 | =item B<-P> not allowed for setuid/setgid script | |
102 | ||
103 | (F) The script would have to be opened by the C preprocessor by name, | |
104 | which provides a race condition that breaks security. | |
105 | ||
106 | =item C<-T> and C<-B> not implemented on filehandles | |
107 | ||
108 | (F) Perl can't peek at the stdio buffer of filehandles when it doesn't | |
109 | know about your kind of stdio. You'll have to use a filename instead. | |
110 | ||
111 | =item ?+* follows nothing in regexp | |
112 | ||
113 | (F) You started a regular expression with a quantifier. Backslash it | |
114 | if you meant it literally. See L<perlre>. | |
115 | ||
116 | =item @ outside of string | |
117 | ||
118 | (F) You had a pack template that specified an absolution position outside | |
119 | the string being unpacked. See L<perlfunc/pack>. | |
120 | ||
121 | =item accept() on closed fd | |
122 | ||
123 | (W) You tried to do an accept on a closed socket. Did you forget to check | |
124 | the return value of your socket() call? See L<perlfunc/accept>. | |
125 | ||
126 | =item Allocation too large: %lx | |
127 | ||
128 | (F) You can't allocate more than 64K on an MSDOS machine. | |
129 | ||
130 | =item Arg too short for msgsnd | |
131 | ||
132 | (F) msgsnd() requires a string at least as long as sizeof(long). | |
133 | ||
748a9306 LW |
134 | =item Ambiguous use of %s resolved as %s |
135 | ||
136 | (W)(S) You said something that may not be interpreted the way | |
137 | you thought. Normally it's pretty easy to disambiguate it by supplying | |
138 | a missing quote, operator, paren pair or declaration. | |
139 | ||
a0d0e21e LW |
140 | =item Args must match #! line |
141 | ||
142 | (F) The setuid emulator requires that the arguments Perl was invoked | |
143 | with match the arguments specified on the #! line. | |
144 | ||
145 | =item Argument "%s" isn't numeric | |
146 | ||
147 | (W) The indicated string was fed as an argument to an operator that | |
148 | expected a numeric value instead. If you're fortunate the message | |
149 | will identify which operator was so unfortunate. | |
150 | ||
151 | =item Array @%s missing the @ in argument %d of %s() | |
152 | ||
153 | (D) Really old Perl let you omit the @ on array names in some spots. This | |
154 | is now heavily deprecated. | |
155 | ||
156 | =item assertion botched: %s | |
157 | ||
158 | (P) The malloc package that comes with Perl had an internal failure. | |
159 | ||
160 | =item Assertion failed: file "%s" | |
161 | ||
162 | (P) A general assertion failed. The file in question must be examined. | |
163 | ||
164 | =item Assignment to both a list and a scalar | |
165 | ||
166 | (F) If you assign to a conditional operator, the 2nd and 3rd arguments | |
167 | must either both be scalars or both be lists. Otherwise Perl won't | |
168 | know which context to supply to the right side. | |
169 | ||
170 | =item Attempt to free non-arena SV: 0x%lx | |
171 | ||
172 | (P) All SV objects are supposed to be allocated from arenas that will | |
173 | be garbage collected on exit. An SV was discovered to be outside any | |
174 | of those arenas. | |
175 | ||
176 | =item Attempt to free temp prematurely | |
177 | ||
178 | (W) Mortalized values are supposed to be freed by the free_tmps() | |
179 | routine. This indicates that something else is freeing the SV before | |
180 | the free_tmps() routine gets a chance, which means that the free_tmps() | |
181 | routine will be freeing an unreferenced scalar when it does try to free | |
182 | it. | |
183 | ||
184 | =item Attempt to free unreferenced glob pointers | |
185 | ||
186 | (P) The reference counts got screwed up on symbol aliases. | |
187 | ||
188 | =item Attempt to free unreferenced scalar | |
189 | ||
190 | (W) Perl went to decrement the reference count of a scalar to see if it | |
191 | would go to 0, and discovered that it had already gone to 0 earlier, | |
192 | and should have been freed, and in fact, probably was freed. This | |
193 | could indicate that SvREFCNT_dec() was called too many times, or that | |
194 | SvREFCNT_inc() was called too few times, or that the SV was mortalized | |
195 | when it shouldn't have been, or that memory has been corrupted. | |
196 | ||
197 | =item Bad arg length for %s, is %d, should be %d | |
198 | ||
199 | (F) You passed a buffer of the wrong size to one of msgctl(), semctl() or | |
200 | shmctl(). In C parlance, the correct sized are, respectively, | |
201 | S<sizeof(struct msqid_ds *)>, S<sizeof(struct semid_ds *)> and | |
202 | S<sizeof(struct shmid_ds *)>. | |
203 | ||
204 | =item Bad associative array | |
205 | ||
206 | (P) One of the internal hash routines was passed a null HV pointer. | |
207 | ||
208 | =item Bad filehandle: %s | |
209 | ||
210 | (F) A symbol was passed to something wanting a filehandle, but the symbol | |
211 | has no filehandle associated with it. Perhaps you didn't do an open(), or | |
212 | did it in another package. | |
213 | ||
214 | =item Bad free() ignored | |
215 | ||
216 | (S) An internal routine called free() on something that had never been | |
217 | malloc()ed in the first place. | |
218 | ||
219 | =item Bad name after %s:: | |
220 | ||
221 | (F) You started to name a symbol by using a package prefix, and then didn't | |
222 | finish the symbol. In particular, you can't interpolate outside of quotes, | |
223 | so | |
224 | ||
225 | $var = 'myvar'; | |
226 | $sym = mypack::$var; | |
227 | ||
228 | is not the same as | |
229 | ||
230 | $var = 'myvar'; | |
231 | $sym = "mypack::$var"; | |
232 | ||
233 | =item Bad symbol for array | |
234 | ||
235 | (P) An internal request asked to add an array entry to something that | |
236 | wasn't a symbol table entry. | |
237 | ||
238 | =item Bad symbol for filehandle | |
239 | ||
240 | (P) An internal request asked to add a filehandle entry to something that | |
241 | wasn't a symbol table entry. | |
242 | ||
243 | =item Bad symbol for hash | |
244 | ||
245 | (P) An internal request asked to add a hash entry to something that | |
246 | wasn't a symbol table entry. | |
247 | ||
248 | =item BEGIN failed--compilation aborted | |
249 | ||
250 | (F) An untrapped exception was raised while executing a BEGIN subroutine. | |
251 | Compilation stops immediately and the interpreter is exited. | |
252 | ||
253 | =item bind() on closed fd | |
254 | ||
255 | (W) You tried to do a bind on a closed socket. Did you forget to check | |
256 | the return value of your socket() call? See L<perlfunc/bind>. | |
257 | ||
258 | =item Callback called exit | |
259 | ||
260 | (F) A subroutine invoked from an external package via perl_call_sv() | |
261 | exited by calling exit. | |
262 | ||
263 | =item Can't "last" outside a block | |
264 | ||
265 | (F) A "last" statement was executed to break out of the current block, | |
266 | except that there's this itty bitty problem called there isn't a | |
267 | current block. Note that an "if" or "else" block doesn't count as a | |
268 | "loopish" block. You can usually double the curlies to get the same | |
269 | effect though, since the inner curlies will be considered a block | |
270 | that loops once. See L<perlfunc/last>. | |
271 | ||
272 | =item Can't "next" outside a block | |
273 | ||
274 | (F) A "next" statement was executed to reiterate the current block, but | |
275 | there isn't a current block. Note that an "if" or "else" block doesn't | |
276 | count as a "loopish" block. You can usually double the curlies to get | |
277 | the same effect though, since the inner curlies will be considered a block | |
278 | that loops once. See L<perlfunc/last>. | |
279 | ||
280 | =item Can't "redo" outside a block | |
281 | ||
282 | (F) A "redo" statement was executed to restart the current block, but | |
283 | there isn't a current block. Note that an "if" or "else" block doesn't | |
284 | count as a "loopish" block. You can usually double the curlies to get | |
285 | the same effect though, since the inner curlies will be considered a block | |
286 | that loops once. See L<perlfunc/last>. | |
287 | ||
288 | =item Can't bless non-reference value | |
289 | ||
290 | (F) Only hard references may be blessed. This is how Perl "enforces" | |
291 | encapsulation of objects. See L<perlobj>. | |
292 | ||
293 | =item Can't break at that line | |
294 | ||
295 | (S) A warning intended for while running within the debugger, indicating | |
296 | the line number specified wasn't the location of a statement that could | |
297 | be stopped at. | |
298 | ||
299 | =item Can't call method "%s" in empty package "%s" | |
300 | ||
301 | (F) You called a method correctly, and it correctly indicated a package | |
302 | functioning as a class, but that package doesn't have ANYTHING defined | |
303 | in it, let alone methods. See L<perlobj>. | |
304 | ||
305 | =item Can't call method "%s" on unblessed reference | |
306 | ||
307 | (F) A method call must know what package it's supposed to run in. It | |
308 | ordinarily finds this out from the object reference you supply, but | |
309 | you didn't supply an object reference in this case. A reference isn't | |
310 | an object reference until it has been blessed. See L<perlobj>. | |
311 | ||
312 | =item Can't call method "%s" without a package or object reference | |
313 | ||
314 | (F) You used the syntax of a method call, but the slot filled by the | |
315 | object reference or package name contains an expression that returns | |
316 | neither an object reference nor a package name. (Perhaps it's null?) | |
317 | Something like this will reproduce the error: | |
318 | ||
319 | $BADREF = undef; | |
320 | process $BADREF 1,2,3; | |
321 | $BADREF->process(1,2,3); | |
322 | ||
323 | =item Can't chdir to %s | |
324 | ||
325 | (F) You called C<perl -x/foo/bar>, but C</foo/bar> is not a directory | |
326 | that you can chdir to, possibly because it doesn't exist. | |
327 | ||
328 | =item Can't coerce %s to integer in %s | |
329 | ||
330 | (F) Certain types of SVs, in particular real symbol table entries | |
331 | (type GLOB), can't be forced to stop being what they are. So you can't | |
332 | say things like: | |
333 | ||
334 | *foo += 1; | |
335 | ||
336 | You CAN say | |
337 | ||
338 | $foo = *foo; | |
339 | $foo += 1; | |
340 | ||
341 | but then $foo no longer contains a glob. | |
342 | ||
343 | =item Can't coerce %s to number in %s | |
344 | ||
345 | (F) Certain types of SVs, in particular real symbol table entries | |
346 | (type GLOB), can't be forced to stop being what they are. | |
347 | ||
348 | =item Can't coerce %s to string in %s | |
349 | ||
350 | (F) Certain types of SVs, in particular real symbol table entries | |
351 | (type GLOB), can't be forced to stop being what they are. | |
352 | ||
353 | =item Can't create pipe mailbox | |
354 | ||
748a9306 LW |
355 | (P) An error peculiar to VMS. The process is suffering from exhausted quotas |
356 | or other plumbing problems. | |
a0d0e21e LW |
357 | |
358 | =item Can't declare %s in my | |
359 | ||
360 | (F) Only scalar, array and hash variables may be declared as lexical variables. | |
361 | They must have ordinary identifiers as names. | |
362 | ||
363 | =item Can't do inplace edit on %s: %s | |
364 | ||
365 | (S) The creation of the new file failed for the indicated reason. | |
366 | ||
367 | =item Can't do inplace edit without backup | |
368 | ||
369 | (F) You're on a system such as MSDOS that gets confused if you try reading | |
370 | from a deleted (but still opened) file. You have to say B<-i>C<.bak>, or some | |
371 | such. | |
372 | ||
373 | =item Can't do inplace edit: %s > 14 characters | |
374 | ||
375 | (S) There isn't enough room in the filename to make a backup name for the file. | |
376 | ||
377 | =item Can't do inplace edit: %s is not a regular file | |
378 | ||
379 | (S) You tried to use the B<-i> switch on a special file, such as a file in | |
380 | /dev, or a FIFO. The file was ignored. | |
381 | ||
382 | =item Can't do setegid! | |
383 | ||
384 | (P) The setegid() call failed for some reason in the setuid emulator | |
385 | of suidperl. | |
386 | ||
387 | =item Can't do seteuid! | |
388 | ||
389 | (P) The setuid emulator of suidperl failed for some reason. | |
390 | ||
391 | =item Can't do setuid | |
392 | ||
393 | (F) This typically means that ordinary perl tried to exec suidperl to | |
394 | do setuid emulation, but couldn't exec it. It looks for a name of the | |
395 | form sperl5.000 in the same directory that the perl executable resides | |
396 | under the name perl5.000, typically /usr/local/bin on Unix machines. | |
397 | If the file is there, check the execute permissions. If it isn't, ask | |
398 | your sysadmin why he and/or she removed it. | |
399 | ||
400 | =item Can't do waitpid with flags | |
401 | ||
402 | (F) This machine doesn't have either waitpid() or wait4(), so only waitpid() | |
403 | without flags is emulated. | |
404 | ||
405 | =item Can't do {n,m} with n > m | |
406 | ||
407 | (F) Minima must be less than or equal to maxima. If you really want | |
408 | your regexp to match something 0 times, just put {0}. See L<perlre>. | |
409 | ||
410 | =item Can't emulate -%s on #! line | |
411 | ||
412 | (F) The #! line specifies a switch that doesn't make sense at this point. | |
413 | For example, it'd be kind of silly to put a B<-x> on the #! line. | |
414 | ||
415 | =item Can't exec "%s": %s | |
416 | ||
417 | (W) An system(), exec() or piped open call could not execute the named | |
418 | program for the indicated reason. Typical reasons include: the permissions | |
419 | were wrong on the file, the file wasn't found in C<$ENV{PATH}>, the | |
420 | executable in question was compiled for another architecture, or the | |
421 | #! line in a script points to an interpreter that can't be run for | |
422 | similar reasons. (Or maybe your system doesn't support #! at all.) | |
423 | ||
424 | =item Can't exec %s | |
425 | ||
426 | (F) Perl was trying to execute the indicated program for you because that's | |
427 | what the #! line said. If that's not what you wanted, you may need to | |
428 | mention "perl" on the #! line somewhere. | |
429 | ||
430 | =item Can't execute %s | |
431 | ||
432 | (F) You used the B<-S> switch, but the script to execute could not be found | |
433 | in the PATH, or at least not with the correct permissions. | |
434 | ||
435 | =item Can't find label %s | |
436 | ||
437 | (F) You said to goto a label that isn't mentioned anywhere that it's possible | |
438 | for us to go to. See L<perlfunc/goto>. | |
439 | ||
440 | =item Can't find string terminator %s anywhere before EOF | |
441 | ||
442 | (F) Perl strings can stretch over multiple lines. This message means that | |
443 | the closing delimiter was omitted. Since bracketed quotes count nesting | |
444 | levels, the following is missing its final parenthesis: | |
445 | ||
446 | print q(The character '(' starts a side comment.) | |
447 | ||
448 | =item Can't fork | |
449 | ||
450 | (F) A fatal error occurred while trying to fork while opening a pipeline. | |
451 | ||
748a9306 LW |
452 | =item Can't get filespec - stale stat buffer? |
453 | ||
454 | (S) A warning peculiar to VMS. This arises because of the difference between | |
455 | access checks under VMS and under the Unix model Perl assumes. Under VMS, | |
456 | access checks are done by filename, rather than by bits in the stat buffer, so | |
457 | that ACLs and other protections can be taken into account. Unfortunately, Perl | |
458 | assumes that the stat buffer contains all the necessary information, and passes | |
459 | it, instead of the filespec, to the access checking routine. It will try to | |
460 | retrieve the filespec using the device name and FID present in the stat buffer, | |
461 | but this works only if you haven't made a subsequent call to the CRTL stat() | |
462 | routine, since the device name is overwritten with each call. If this warning | |
463 | appears, the name lookup failed, and the access checking routine gave up and | |
464 | returned FALSE, just to be conservative. (Note: The access checking routine | |
465 | knows about the Perl C<stat> operator and file tests, so you shouldn't ever | |
466 | see this warning in response to a Perl command; it arises only if some internal | |
467 | code takes stat buffers lightly.) | |
468 | ||
a0d0e21e LW |
469 | =item Can't get pipe mailbox device name |
470 | ||
748a9306 LW |
471 | (P) An error peculiar to VMS. After creating a mailbox to act as a pipe, Perl |
472 | can't retrieve its name for later use. | |
a0d0e21e LW |
473 | |
474 | =item Can't get SYSGEN parameter value for MAXBUF | |
475 | ||
748a9306 LW |
476 | (P) An error peculiar to VMS. Perl asked $GETSYI how big you want your |
477 | mailbox buffers to be, and didn't get an answer. | |
a0d0e21e LW |
478 | |
479 | =item Can't goto subroutine outside a subroutine | |
480 | ||
481 | (F) The deeply magical "goto subroutine" call can only replace one subroutine | |
482 | call for another. It can't manufacture one out of whole cloth. In general | |
483 | you should only be calling it out of an AUTOLOAD routine anyway. See | |
484 | L<perlfunc/goto>. | |
485 | ||
748a9306 LW |
486 | =item Can't localize lexical variable %s |
487 | ||
488 | (F) You used local on a variable name that was previous declared as a | |
489 | lexical variable using "my". This is not allowed. If you want to | |
490 | localize a package variable of the same name, qualify it with the | |
491 | package name. | |
492 | ||
a0d0e21e LW |
493 | =item Can't locate %s in @INC |
494 | ||
495 | (F) You said to do (or require, or use) a file that couldn't be found | |
496 | in any of the libraries mentioned in @INC. Perhaps you need to set | |
497 | the PERL5LIB environment variable to say where the extra library is, | |
498 | or maybe the script needs to add the library name to @INC. Or maybe | |
499 | you just misspelled the name of the file. See L<perlfunc/require>. | |
500 | ||
501 | =item Can't locate object method "%s" via package "%s" | |
502 | ||
503 | (F) You called a method correctly, and it correctly indicated a package | |
504 | functioning as a class, but that package doesn't define that particular | |
505 | method, nor does any of it's base classes. See L<perlobj>. | |
506 | ||
507 | =item Can't locate package %s for @%s::ISA | |
508 | ||
509 | (W) The @ISA array contained the name of another package that doesn't seem | |
510 | to exist. | |
511 | ||
512 | =item Can't mktemp() | |
513 | ||
514 | (F) The mktemp() routine failed for some reason while trying to process | |
515 | a B<-e> switch. Maybe your /tmp partition is full, or clobbered. | |
516 | ||
517 | =item Can't modify %s in %s | |
518 | ||
519 | (F) You aren't allowed to assign to the item indicated, or otherwise try to | |
520 | change it, such as with an autoincrement. | |
521 | ||
522 | =item Can't modify non-existent substring | |
523 | ||
524 | (P) The internal routine that does assignment to a substr() was handed | |
525 | a NULL. | |
526 | ||
527 | =item Can't msgrcv to readonly var | |
528 | ||
529 | (F) The target of a msgrcv must be modifiable in order to be used as a receive | |
530 | buffer. | |
531 | ||
532 | =item Can't open %s: %s | |
533 | ||
534 | (S) An inplace edit couldn't open the original file for the indicated reason. | |
535 | Usually this is because you don't have read permission for the file. | |
536 | ||
537 | =item Can't open bidirectional pipe | |
538 | ||
539 | (W) You tried to say C<open(CMD, "|cmd|")>, which is not supported. You can | |
540 | try any of several modules in the Perl library to do this, such as | |
541 | "open2.pl". Alternately, direct the pipe's output to a file using ">", | |
542 | and then read it in under a different file handle. | |
543 | ||
748a9306 LW |
544 | =item Can't open error file %s as stderr |
545 | ||
546 | (F) An error peculiar to VMS. Perl does its own command line redirection, and | |
547 | couldn't open the file specified after '2>' or '2>>' on the command line for | |
548 | writing. | |
549 | ||
550 | =item Can't open input file %s as stdin | |
551 | ||
552 | (F) An error peculiar to VMS. Perl does its own command line redirection, and | |
553 | couldn't open the file specified after '<' on the command line for reading. | |
554 | ||
555 | =item Can't open output file %s as stdout | |
556 | ||
557 | (F) An error peculiar to VMS. Perl does its own command line redirection, and | |
558 | couldn't open the file specified after '>' or '>>' on the command line for | |
559 | writing. | |
560 | ||
561 | =item Can't open output pipe (name: %s) | |
562 | ||
563 | (P) An error peculiar to VMS. Perl does its own command line redirection, and | |
564 | couldn't open the pipe into which to send data destined for stdout. | |
565 | ||
a0d0e21e LW |
566 | =item Can't open perl script "%s": %s |
567 | ||
568 | (F) The script you specified can't be opened for the indicated reason. | |
569 | ||
570 | =item Can't rename %s to %s: %s, skipping file | |
571 | ||
572 | (S) The rename done by the B<-i> switch failed for some reason, probably because | |
573 | you don't have write permission to the directory. | |
574 | ||
748a9306 LW |
575 | =item Can't reopen input pipe (name: %s) in binary mode |
576 | ||
577 | (P) An error peculiar to VMS. Perl thought stdin was a pipe, and tried to | |
578 | reopen it to accept binary data. Alas, it failed. | |
579 | ||
a0d0e21e LW |
580 | =item Can't reswap uid and euid |
581 | ||
582 | (P) The setreuid() call failed for some reason in the setuid emulator | |
583 | of suidperl. | |
584 | ||
585 | =item Can't return outside a subroutine | |
586 | ||
587 | (F) The return statement was executed in mainline code, that is, where | |
588 | there was no subroutine call to return out of. See L<perlsub>. | |
589 | ||
590 | =item Can't stat script "%s" | |
591 | ||
592 | (P) For some reason you can't fstat() the script even though you have | |
593 | it open already. Bizarre. | |
594 | ||
595 | =item Can't swap uid and euid | |
596 | ||
597 | (P) The setreuid() call failed for some reason in the setuid emulator | |
598 | of suidperl. | |
599 | ||
600 | =item Can't take log of %g | |
601 | ||
602 | (F) Logarithms are only defined on positive real numbers. | |
603 | ||
604 | =item Can't take sqrt of %g | |
605 | ||
606 | (F) For ordinary real numbers, you can't take the square root of a | |
607 | negative number. There's a Complex package available for Perl, though, | |
608 | if you really want to do that. | |
609 | ||
610 | =item Can't undef active subroutine | |
611 | ||
612 | (F) You can't undefine a routine that's currently running. You can, | |
613 | however, redefine it while it's running, and you can even undef the | |
614 | redefined subroutine while the old routine is running. Go figure. | |
615 | ||
616 | =item Can't unshift | |
617 | ||
618 | (F) You tried to unshift an "unreal" array that can't be unshifted, such | |
619 | as the main Perl stack. | |
620 | ||
621 | =item Can't upgrade that kind of scalar | |
622 | ||
623 | (P) The internal sv_upgrade routine adds "members" to an SV, making | |
624 | it into a more specialized kind of SV. The top several SV types are | |
625 | so specialized, however, that they cannot be interconverted. This | |
626 | message indicates that such a conversion was attempted. | |
627 | ||
628 | =item Can't upgrade to undef | |
629 | ||
630 | (P) The undefined SV is the bottom of the totem pole, in the scheme | |
631 | of upgradability. Upgrading to undef indicates an error in the | |
632 | code calling sv_upgrade. | |
633 | ||
a0d0e21e LW |
634 | =item Can't use %s for loop variable |
635 | ||
636 | (F) Only a simple scalar variable may be used as a loop variable on a foreach. | |
637 | ||
638 | =item Can't use %s ref as %s ref | |
639 | ||
640 | (F) You've mixed up your reference types. You have to dereference a | |
641 | reference of the type needed. You can use the ref() function to | |
642 | test the type of the reference, if need be. | |
643 | ||
748a9306 LW |
644 | =item Can't use \1 to mean $1 in expression |
645 | ||
646 | (W) In an ordinary expression, backslash is a unary operator that creates | |
647 | a reference to its argument. The use of backslash to indicate a backreference | |
648 | to a matched substring is only valid as part of a regular expression pattern. | |
649 | Trying to do this in ordinary Perl code produces a value that prints | |
650 | out looking like SCALAR(0xdecaf). Use the $1 form instead. | |
651 | ||
652 | =item Can't use string ("%s") as %s ref while "strict refs" in use | |
a0d0e21e LW |
653 | |
654 | (F) Only hard references are allowed by "strict refs". Symbolic references | |
655 | are disallowed. See L<perlref>. | |
656 | ||
657 | =item Can't use an undefined value as %s reference | |
658 | ||
659 | (F) A value used as either a hard reference or a symbolic reference must | |
660 | be a defined value. This helps to de-lurk some insidious errors. | |
661 | ||
662 | =item Can't use delimiter brackets within expression | |
663 | ||
664 | (F) The ${name} construct is for disambiguating identifiers in strings, not | |
665 | in ordinary code. | |
666 | ||
667 | =item Can't use global %s in "my" | |
668 | ||
669 | (F) You tried to declare a magical variable as a lexical variable. This is | |
670 | not allowed, because the magic can only be tied to one location (namely | |
671 | the global variable) and it would be incredibly confusing to have | |
672 | variables in your program that looked like magical variables but | |
673 | weren't. | |
674 | ||
748a9306 LW |
675 | =item Can't use subscript on %s |
676 | ||
677 | (F) The compiler tried to interpret a bracketed expression as a | |
678 | subscript. But to the left of the brackets was an expression that | |
679 | didn't look like an array reference, or anything else subscriptable. | |
680 | ||
a0d0e21e LW |
681 | =item Can't write to temp file for B<-e>: %s |
682 | ||
683 | (F) The write routine failed for some reason while trying to process | |
684 | a B<-e> switch. Maybe your /tmp partition is full, or clobbered. | |
685 | ||
686 | =item Can't x= to readonly value | |
687 | ||
688 | (F) You tried to repeat a constant value (often the undefined value) with | |
689 | an assignment operator, which implies modifying the value itself. | |
690 | Perhaps you need to copy the value to a temporary, and repeat that. | |
691 | ||
692 | =item Cannot open temporary file | |
693 | ||
694 | (F) The create routine failed for some reaon while trying to process | |
695 | a B<-e> switch. Maybe your /tmp partition is full, or clobbered. | |
696 | ||
697 | =item chmod: mode argument is missing initial 0 | |
698 | ||
699 | (W) A novice will sometimes say | |
700 | ||
701 | chmod 777, $filename | |
702 | ||
703 | not realizing that 777 will be interpreted as a decimal number, equivalent | |
704 | to 01411. Octal constants are introduced with a leading 0 in Perl, as in C. | |
705 | ||
706 | =item Close on unopened file <%s> | |
707 | ||
708 | (W) You tried to close a filehandle that was never opened. | |
709 | ||
710 | =item connect() on closed fd | |
711 | ||
712 | (W) You tried to do a connect on a closed socket. Did you forget to check | |
713 | the return value of your socket() call? See L<perlfunc/connect>. | |
714 | ||
715 | =item Corrupt malloc ptr 0x%lx at 0x%lx | |
716 | ||
717 | (P) The malloc package that comes with Perl had an internal failure. | |
718 | ||
719 | =item corrupted regexp pointers | |
720 | ||
721 | (P) The regular expression engine got confused by what the regular | |
722 | expression compiler gave it. | |
723 | ||
724 | =item corrupted regexp program | |
725 | ||
726 | (P) The regular expression engine got passed a regexp program without | |
727 | a valid magic number. | |
728 | ||
729 | =item Deep recursion on subroutine "%s" | |
730 | ||
731 | (W) This subroutine has called itself (directly or indirectly) 100 | |
732 | times than it has returned. This probably indicates an infinite | |
733 | recursion, unless you're writing strange benchmark programs, in which | |
734 | case it indicates something else. | |
735 | ||
748a9306 | 736 | =item Did you mean $ or @ instead of %? |
a0d0e21e | 737 | |
748a9306 LW |
738 | (W) You probably said %hash{$key} when you meant $hash{$key} or @hash{@keys}. |
739 | On the other hand, maybe you just meant %hash and got carried away. | |
740 | ||
741 | =item Do you need to predeclare %s? | |
742 | ||
743 | (S) This is an educated guess made in conjunction with the message "%s | |
744 | found where operator expected". It often means a subroutine or module | |
745 | name is being referenced that hasn't been declared yet. This may be | |
746 | because of ordering problems in your file, or because of a missing | |
747 | "sub", "package", "require", or "use" statement. If you're | |
748 | referencing something that isn't defined yet, you don't actually have | |
749 | to define the subroutine or package before the current location. You | |
750 | can use an empty "sub foo;" or "package FOO;" to enter a "forward" | |
751 | declaration. | |
a0d0e21e LW |
752 | |
753 | =item Don't know how to handle magic of type '%s' | |
754 | ||
755 | (P) The internal handling of magical variables has been cursed. | |
756 | ||
757 | =item do_study: out of memory | |
758 | ||
759 | (P) This should have been caught by safemalloc() instead. | |
760 | ||
761 | =item Duplicate free() ignored | |
762 | ||
763 | (S) An internal routine called free() on something that had already | |
764 | been freed. | |
765 | ||
766 | =item END failed--cleanup aborted | |
767 | ||
768 | (F) An untrapped exception was raised while executing an END subroutine. | |
769 | The interpreter is immediately exited. | |
770 | ||
748a9306 LW |
771 | =item Error converting file specification %s |
772 | ||
773 | (F) An error peculiar to VMS. Since Perl may have to deal with file | |
774 | specifications in either VMS or Unix syntax, it converts them to a | |
775 | single form when it must operate on them directly. Either you've | |
776 | passed an invalid file specification to Perl, or you've found a | |
777 | case the conversion routines don't handle. Drat. | |
778 | ||
a0d0e21e LW |
779 | =item Execution of %s aborted due to compilation errors. |
780 | ||
781 | (F) The final summary message when a Perl compilation fails. | |
782 | ||
783 | =item Exiting eval via %s | |
784 | ||
785 | (W) You are exiting an eval by unconventional means, such as a | |
786 | a goto, or a loop control statement. | |
787 | ||
788 | =item Exiting subroutine via %s | |
789 | ||
790 | (W) You are exiting a subroutine by unconventional means, such as a | |
791 | a goto, or a loop control statement. | |
792 | ||
793 | =item Exiting substitution via %s | |
794 | ||
795 | (W) You are exiting a substitution by unconventional means, such as a | |
796 | a return, a goto, or a loop control statement. | |
797 | ||
748a9306 | 798 | =item Fatal VMS error at %s, line %d |
a0d0e21e | 799 | |
748a9306 LW |
800 | (P) An error peculiar to VMS. Something untoward happened in a VMS system |
801 | service or RTL routine; Perl's exit status should provide more details. The | |
802 | filename in "at %s" and the line number in "line %d" tell you which section of | |
803 | the Perl source code is distressed. | |
a0d0e21e LW |
804 | |
805 | =item fcntl is not implemented | |
806 | ||
807 | (F) Your machine apparently doesn't implement fcntl(). What is this, a | |
808 | PDP-11 or something? | |
809 | ||
810 | =item Filehandle %s never opened | |
811 | ||
812 | (W) An I/O operation was attempted on a filehandle that was never initialized. | |
813 | You need to do an open() or a socket() call, or call a constructor from | |
814 | the FileHandle package. | |
815 | ||
816 | =item Filehandle %s opened only for input | |
817 | ||
818 | (W) You tried to write on a read-only filehandle. If you | |
819 | intended it to be a read-write filehandle, you needed to open it with | |
820 | "+<" or "+>" or "+>>" instead of with "<" or nothing. If you only | |
821 | intended to write the file, use ">" or ">>". See L<perlfunc/open>. | |
822 | ||
823 | =item Filehandle only opened for input | |
824 | ||
825 | (W) You tried to write on a read-only filehandle. If you | |
826 | intended it to be a read-write filehandle, you needed to open it with | |
827 | "+<" or "+>" or "+>>" instead of with "<" or nothing. If you only | |
828 | intended to write the file, use ">" or ">>". See L<perlfunc/open>. | |
829 | ||
830 | =item Final $ should be \$ or $name | |
831 | ||
832 | (F) You must now decide whether the final $ in a string was meant to be | |
833 | a literal dollar sign, or was meant to introduce a variable name | |
834 | that happens to be missing. So you have to put either the backslash or | |
835 | the name. | |
836 | ||
837 | =item Final @ should be \@ or @name | |
838 | ||
839 | (F) You must now decide whether the final @ in a string was meant to be | |
840 | a literal "at" sign, or was meant to introduce a variable name | |
841 | that happens to be missing. So you have to put either the backslash or | |
842 | the name. | |
843 | ||
844 | =item Format %s redefined | |
845 | ||
846 | (W) You redefined a format. To suppress this warning, say | |
847 | ||
848 | { | |
849 | local $^W = 0; | |
850 | eval "format NAME =..."; | |
851 | } | |
852 | ||
853 | =item Format not terminated | |
854 | ||
855 | (F) A format must be terminated by a line with a solitary dot. Perl got | |
856 | to the end of your file without finding such a line. | |
857 | ||
858 | =item Found = in conditional, should be == | |
859 | ||
860 | (W) You said | |
861 | ||
862 | if ($foo = 123) | |
863 | ||
864 | when you meant | |
865 | ||
866 | if ($foo == 123) | |
867 | ||
868 | (or something like that). | |
869 | ||
870 | =item gdbm store returned %d, errno %d, key "%s" | |
871 | ||
872 | (S) A warning from the GDBM_File extension that a store failed. | |
873 | ||
874 | =item gethostent not implemented | |
875 | ||
876 | (F) Your C library apparently doesn't implement gethostent(), probably | |
877 | because if it did, it'd feel morally obligated to return every hostname | |
878 | on the Internet. | |
879 | ||
880 | =item get{sock,peer}name() on closed fd | |
881 | ||
882 | (W) You tried to get a socket or peer socket name on a closed socket. | |
883 | Did you forget to check the return value of your socket() call? | |
884 | ||
748a9306 LW |
885 | =item getpwnam returned invalid UIC %#o for user "%s" |
886 | ||
887 | (S) A warning peculiar to VMS. The call to C<sys$getuai> underlying the | |
888 | C<getpwnam> operator returned an invalid UIC. | |
889 | ||
890 | ||
a0d0e21e LW |
891 | =item Glob not terminated |
892 | ||
893 | (F) The lexer saw a left angle bracket in a place where it was expecting | |
894 | a term, so it's looking for the corresponding right angle bracket, and not | |
895 | finding it. Chances are you left some needed parentheses out earlier in | |
896 | the line, and you really meant a "less than". | |
897 | ||
898 | =item Global symbol "%s" requires explicit package name | |
899 | ||
900 | (F) You've said "use strict vars", which indicates that all variables must | |
901 | either be lexically scoped (using "my"), or explicitly qualified to | |
902 | say which package the global variable is in (using "::"). | |
903 | ||
904 | =item goto must have label | |
905 | ||
906 | (F) Unlike with "next" or "last", you're not allowed to goto an | |
907 | unspecified destination. See L<perlfunc/goto>. | |
908 | ||
909 | =item Had to create %s unexpectedly | |
910 | ||
911 | (S) A routine asked for a symbol from a symbol table that ought to have | |
912 | existed already, but for some reason it didn't, and had to be created on | |
913 | an emergency basis to prevent a core dump. | |
914 | ||
915 | =item Hash %%s missing the % in argument %d of %s() | |
916 | ||
917 | (D) Really old Perl let you omit the % on hash names in some spots. This | |
918 | is now heavily deprecated. | |
919 | ||
920 | =item Identifier "%s::%s" used only once: possible typo | |
921 | ||
922 | (W) Typographical errors often show up as unique identifiers. If you | |
923 | had a good reason for having a unique identifier, then just mention it | |
924 | again somehow to suppress the message. | |
925 | ||
926 | =item Illegal division by zero | |
927 | ||
928 | (F) You tried to divide a number by 0. Either something was wrong in your | |
929 | logic, or you need to put a conditional in to guard against meaningless input. | |
930 | ||
931 | =item Illegal modulus zero | |
932 | ||
933 | (F) You tried to divide a number by 0 to get the remainder. Most numbers | |
934 | don't take to this kindly. | |
935 | ||
936 | =item Illegal octal digit | |
937 | ||
938 | (F) You used an 8 or 9 in a octal number. | |
939 | ||
748a9306 LW |
940 | =item Illegal octal digit ignored |
941 | ||
942 | (W) You may have tried to use an 8 or 9 in a octal number. Interpretation | |
943 | of the octal number stopped before the 8 or 9. | |
944 | ||
a0d0e21e LW |
945 | =item Insecure dependency in %s |
946 | ||
947 | (F) You tried to do something that the tainting mechanism didn't like. | |
948 | The tainting mechanism is turned on when you're running setuid or setgid, | |
949 | or when you specify B<-T> to turn it on explicitly. The tainting mechanism | |
950 | labels all data that's derived directly or indirectly from the user, | |
951 | who is considered to be unworthy of your trust. If any such data is | |
952 | used in a "dangerous" operation, you get this error. See L<perlsec> | |
953 | for more information. | |
954 | ||
955 | =item Insecure directory in %s | |
956 | ||
957 | (F) You can't use system(), exec(), or a piped open in a setuid or setgid | |
958 | script if $ENV{PATH} contains a directory that is writable by the world. | |
959 | See L<perlsec>. | |
960 | ||
961 | =item Insecure PATH | |
962 | ||
963 | (F) You can't use system(), exec(), or a piped open in a setuid or | |
964 | setgid script if $ENV{PATH} is derived from data supplied (or | |
965 | potentially supplied) by the user. The script must set the path to a | |
966 | known value, using trustworthy data. See L<perlsec>. | |
967 | ||
748a9306 LW |
968 | =item Internal inconsistency in tracking vforks |
969 | ||
970 | (S) A warning peculiar to VMS. Perl keeps track of the number | |
971 | of times you've called C<fork> and C<exec>, in order to determine | |
972 | whether the current call to C<exec> should be affect the current | |
973 | script or a subprocess (see L<perlvms/exec>). Somehow, this count | |
974 | has become scrambled, so Perl is making a guess and treating | |
975 | this C<exec> as a request to terminate the Perl script | |
976 | and execute the specified command. | |
977 | ||
a0d0e21e LW |
978 | =item internal disaster in regexp |
979 | ||
980 | (P) Something went badly wrong in the regular expression parser. | |
981 | ||
982 | =item internal urp in regexp at /%s/ | |
983 | ||
984 | (P) Something went badly awry in the regular expression parser. | |
985 | ||
986 | =item invalid [] range in regexp | |
987 | ||
988 | (F) The range specified in a character class had a minimum character | |
989 | greater than the maximum character. See L<perlre>. | |
990 | ||
991 | =item ioctl is not implemented | |
992 | ||
993 | (F) Your machine apparently doesn't implement ioctl(), which is pretty | |
994 | strange for a machine that supports C. | |
995 | ||
996 | =item junk on end of regexp | |
997 | ||
998 | (P) The regular expression parser is confused. | |
999 | ||
1000 | =item Label not found for "last %s" | |
1001 | ||
1002 | (F) You named a loop to break out of, but you're not currently in a | |
1003 | loop of that name, not even if you count where you were called from. | |
1004 | See L<perlfunc/last>. | |
1005 | ||
1006 | =item Label not found for "next %s" | |
1007 | ||
1008 | (F) You named a loop to continue, but you're not currently in a loop of | |
1009 | that name, not even if you count where you were called from. See | |
1010 | L<perlfunc/last>. | |
1011 | ||
1012 | =item Label not found for "redo %s" | |
1013 | ||
1014 | (F) You named a loop to restart, but you're not currently in a loop of | |
1015 | that name, not even if you count where you were called from. See | |
1016 | L<perlfunc/last>. | |
1017 | ||
1018 | =item listen() on closed fd | |
1019 | ||
1020 | (W) You tried to do a listen on a closed socket. Did you forget to check | |
1021 | the return value of your socket() call? See L<perlfunc/listen>. | |
1022 | ||
1023 | =item Literal @%s now requires backslash | |
1024 | ||
1025 | (F) It used to be that Perl would try to guess whether you wanted an | |
1026 | array interpolated or a literal @. It did this when the string was | |
1027 | first used at runtime. Now strings are parsed at compile time, and | |
1028 | ambiguous instances of @ must be disambiguated, either by putting a | |
1029 | backslash to indicate a literal, or by declaring (or using) the array | |
1030 | within the program before the string (lexically). (Someday it will simply | |
1031 | assume that an unbackslashed @ interpolates an array.) | |
1032 | ||
1033 | =item Method for operation %s not found in package %s during blessing | |
1034 | ||
1035 | (F) An attempt was made to specify an entry in an overloading table that | |
1036 | doesn't somehow point to a valid method. See L<perlovl>. | |
1037 | ||
1038 | =item Might be a runaway multi-line %s string starting on line %d | |
1039 | ||
1040 | (S) An advisory indicating that the previous error may have been caused | |
1041 | by a missing delimiter on a string or pattern, because it eventually | |
1042 | ended earlier on the current line. | |
1043 | ||
1044 | =item Misplaced _ in number | |
1045 | ||
1046 | (W) An underline in a decimal constant wasn't on a 3-digit boundary. | |
1047 | ||
1048 | =item Missing $ on loop variable | |
1049 | ||
1050 | (F) Apparently you've been programming in csh too much. Variables are always | |
1051 | mentioned with the $ in Perl, unlike in the shells, where it can vary from | |
1052 | one line to the next. | |
1053 | ||
1054 | =item Missing comma after first argument to %s function | |
1055 | ||
1056 | (F) While certain functions allow you to specify a filehandle or an | |
1057 | "indirect object" before the argument list, this ain't one of them. | |
1058 | ||
748a9306 LW |
1059 | =item Missing operator before %s? |
1060 | ||
1061 | (S) This is an educated guess made in conjunction with the message "%s | |
1062 | found where operator expected". Often the missing operator is a comma. | |
1063 | ||
a0d0e21e LW |
1064 | =item Missing right bracket |
1065 | ||
1066 | (F) The lexer counted more opening curly brackets (braces) than closing ones. | |
1067 | As a general rule, you'll find it's missing near the place you were last | |
1068 | editing. | |
1069 | ||
1070 | =item Missing semicolon on previous line? | |
1071 | ||
1072 | (S) This is an educated guess made in conjunction with the message "%s | |
1073 | found where operator expected". Don't automatically put a semicolon on | |
1074 | the previous line just because you saw this message. | |
1075 | ||
1076 | =item Modification of a read-only value attempted | |
1077 | ||
1078 | (F) You tried, directly or indirectly, to change the value of a | |
1079 | constant. You didn't, of course, try "2 = 1", since the compiler | |
1080 | catches that. But an easy way to do the same thing is: | |
1081 | ||
1082 | sub mod { $_[0] = 1 } | |
1083 | mod(2); | |
1084 | ||
1085 | Another way is to assign to a substr() that's off the end of the string. | |
1086 | ||
1087 | =item Modification of non-creatable array value attempted, subscript %d | |
1088 | ||
1089 | (F) You tried to make an array value spring into existence, and the | |
1090 | subscript was probably negative, even counting from end of the array | |
1091 | backwards. | |
1092 | ||
1093 | =item Modification of non-creatable hash value attempted, subscript "%s" | |
1094 | ||
1095 | (F) You tried to make a hash value spring into existence, and it couldn't | |
1096 | be created for some peculiar reason. | |
1097 | ||
1098 | =item Module name must be constant | |
1099 | ||
1100 | (F) Only a bare module name is allowed as the first argument to a "use". | |
1101 | ||
1102 | =item msg%s not implemented | |
1103 | ||
1104 | (F) You don't have System V message IPC on your system. | |
1105 | ||
1106 | =item Multidimensional syntax %s not supported | |
1107 | ||
1108 | (W) Multidimensional arrays aren't written like $foo[1,2,3]. They're written | |
1109 | like $foo[1][2][3], as in C. | |
1110 | ||
1111 | =item Negative length | |
1112 | ||
1113 | (F) You tried to do a read/write/send/recv operation with a buffer length | |
1114 | that is less than 0. This is difficult to imagine. | |
1115 | ||
1116 | =item nested *?+ in regexp | |
1117 | ||
1118 | (F) You can't quantify a quantifier without intervening parens. So | |
1119 | things like ** or +* or ?* are illegal. | |
1120 | ||
1121 | Note, however, that the minimal matching quantifiers, *?, +? and ?? appear | |
1122 | to be nested quantifiers, but aren't. See L<perlre>. | |
1123 | ||
1124 | =item No #! line | |
1125 | ||
1126 | (F) The setuid emulator requires that scripts have a well-formed #! line | |
1127 | even on machines that don't support the #! construct. | |
1128 | ||
1129 | =item No %s allowed while running setuid | |
1130 | ||
1131 | (F) Certain operations are deemed to be too insecure for a setuid or setgid | |
1132 | script to even be allowed to attempt. Generally speaking there will be | |
1133 | another way to do what you want that is, if not secure, at least securable. | |
1134 | See L<perlsec>. | |
1135 | ||
1136 | =item No B<-e> allowed in setuid scripts | |
1137 | ||
1138 | (F) A setuid script can't be specified by the user. | |
1139 | ||
1140 | =item No comma allowed after %s | |
1141 | ||
1142 | (F) A list operator that has a filehandle or "indirect object" is not | |
1143 | allowed to have a comma between that and the following arguments. | |
1144 | Otherwise it'd be just another one of the arguments. | |
1145 | ||
748a9306 LW |
1146 | =item No command into which to pipe on command line |
1147 | ||
1148 | (F) An error peculiar to VMS. Perl handles its own command line redirection, | |
1149 | and found a '|' at the end of the command line, so it doesn't know whither you | |
1150 | want to pipe the output from this command. | |
1151 | ||
a0d0e21e LW |
1152 | =item No DB::DB routine defined |
1153 | ||
1154 | (F) The currently executing code was compiled with the B<-d> switch, | |
1155 | but for some reason the perl5db.pl file (or some facsimile thereof) | |
1156 | didn't define a routine to be called at the beginning of each | |
1157 | statement. Which is odd, because the file should have been required | |
1158 | automatically, and should have blown up the require if it didn't parse | |
1159 | right. | |
1160 | ||
1161 | =item No dbm on this machine | |
1162 | ||
1163 | (P) This is counted as an internal error, because every machine should | |
1164 | supply dbm nowadays, since Perl comes with SDBM. See L<SDBM_File>. | |
1165 | ||
1166 | =item No DBsub routine | |
1167 | ||
1168 | (F) The currently executing code was compiled with the B<-d> switch, | |
1169 | but for some reason the perl5db.pl file (or some facsimile thereof) | |
1170 | didn't define a DB::sub routine to be called at the beginning of each | |
1171 | ordinary subroutine call. | |
1172 | ||
748a9306 LW |
1173 | =item No error file after 2> or 2>> on command line |
1174 | ||
1175 | (F) An error peculiar to VMS. Perl handles its own command line redirection, | |
1176 | and found a '2>' or a '2>>' on the command line, but can't find the name of the | |
1177 | file to which to write data destined for stderr. | |
1178 | ||
1179 | =item No input file after < on command line | |
1180 | ||
1181 | (F) An error peculiar to VMS. Perl handles its own command line redirection, | |
1182 | and found a '<' on the command line, but can't find the name of the file from | |
1183 | which to read data for stdin. | |
1184 | ||
1185 | =item No output file after > on command line | |
1186 | ||
1187 | (F) An error peculiar to VMS. Perl handles its own command line redirection, | |
1188 | and found a lone '>' at the end of the command line, so it doesn't know whither | |
1189 | you wanted to redirect stdout. | |
1190 | ||
1191 | =item No output file after > or >> on command line | |
1192 | ||
1193 | (F) An error peculiar to VMS. Perl handles its own command line redirection, | |
1194 | and found a '>' or a '>>' on the command line, but can't find the name of the | |
1195 | file to which to write data destined for stdout. | |
1196 | ||
a0d0e21e LW |
1197 | =item No Perl script found in input |
1198 | ||
1199 | (F) You called C<perl -x>, but no line was found in the file beginning | |
1200 | with #! and containing the word "perl". | |
1201 | ||
1202 | =item No setregid available | |
1203 | ||
1204 | (F) Configure didn't find anything resembling the setregid() call for | |
1205 | your system. | |
1206 | ||
1207 | =item No setreuid available | |
1208 | ||
1209 | (F) Configure didn't find anything resembling the setreuid() call for | |
1210 | your system. | |
1211 | ||
1212 | =item No space allowed after B<-I> | |
1213 | ||
1214 | (F) The argument to B<-I> must follow the B<-I> immediately with no | |
1215 | intervening space. | |
1216 | ||
748a9306 LW |
1217 | =item No such pipe open |
1218 | ||
1219 | (P) An error peculiar to VMS. The internal routine my_pclose() tried to | |
1220 | close a pipe which hadn't been opened. This should have been caught earlier as | |
1221 | an attempt to close an unopened filehandle. | |
1222 | ||
a0d0e21e LW |
1223 | =item No such signal: SIG%s |
1224 | ||
1225 | (W) You specified a signal name as a subscript to %SIG that was not recognized. | |
1226 | Say C<kill -l> in your shell to see the valid signal names on your system. | |
1227 | ||
1228 | =item Not a CODE reference | |
1229 | ||
1230 | (F) Perl was trying to evaluate a reference to a code value (that is, a | |
1231 | subroutine), but found a reference to something else instead. You can | |
1232 | use the ref() function to find out what kind of ref it really was. | |
1233 | See also L<perlref>. | |
1234 | ||
1235 | =item Not a format reference | |
1236 | ||
1237 | (F) I'm not sure how you managed to generate a reference to an anonymous | |
1238 | format, but this indicates you did, and that it didn't exist. | |
1239 | ||
1240 | =item Not a GLOB reference | |
1241 | ||
1242 | (F) Perl was trying to evaluate a reference to a "type glob" (that is, | |
1243 | a symbol table entry that looks like C<*foo>), but found a reference to | |
1244 | something else instead. You can use the ref() function to find out | |
1245 | what kind of ref it really was. See L<perlref>. | |
1246 | ||
1247 | =item Not a HASH reference | |
1248 | ||
1249 | (F) Perl was trying to evaluate a reference to a hash value, but | |
1250 | found a reference to something else instead. You can use the ref() | |
1251 | function to find out what kind of ref it really was. See L<perlref>. | |
1252 | ||
1253 | =item Not a perl script | |
1254 | ||
1255 | (F) The setuid emulator requires that scripts have a well-formed #! line | |
1256 | even on machines that don't support the #! construct. The line must | |
1257 | mention perl. | |
1258 | ||
1259 | =item Not a SCALAR reference | |
1260 | ||
1261 | (F) Perl was trying to evaluate a reference to a scalar value, but | |
1262 | found a reference to something else instead. You can use the ref() | |
1263 | function to find out what kind of ref it really was. See L<perlref>. | |
1264 | ||
1265 | =item Not a subroutine reference | |
1266 | ||
1267 | (F) Perl was trying to evaluate a reference to a code value (that is, a | |
1268 | subroutine), but found a reference to something else instead. You can | |
1269 | use the ref() function to find out what kind of ref it really was. | |
1270 | See also L<perlref>. | |
1271 | ||
1272 | =item Not a subroutine reference in %OVERLOAD | |
1273 | ||
1274 | (F) An attempt was made to specify an entry in an overloading table that | |
1275 | doesn't somehow point to a valid subroutine. See L<perlovl>. | |
1276 | ||
1277 | =item Not an ARRAY reference | |
1278 | ||
1279 | (F) Perl was trying to evaluate a reference to an array value, but | |
1280 | found a reference to something else instead. You can use the ref() | |
1281 | function to find out what kind of ref it really was. See L<perlref>. | |
1282 | ||
1283 | =item Not enough arguments for %s | |
1284 | ||
1285 | (F) The function requires more arguments than you specified. | |
1286 | ||
1287 | =item Not enough format arguments | |
1288 | ||
1289 | (W) A format specified more picture fields than the next line supplied. | |
1290 | See L<perlform>. | |
1291 | ||
1292 | =item Null filename used | |
1293 | ||
1294 | (F) You can't require the null filename, especially since on many machines | |
1295 | that means the current directory! See L<perlfunc/require>. | |
1296 | ||
1297 | =item NULL OP IN RUN | |
1298 | ||
1299 | (P) Some internal routine called run() with a null opcode pointer. | |
1300 | ||
1301 | =item Null realloc | |
1302 | ||
1303 | (P) An attempt was made to realloc NULL. | |
1304 | ||
1305 | =item NULL regexp argument | |
1306 | ||
1307 | (P) The internal pattern matching routines blew it bigtime. | |
1308 | ||
1309 | =item NULL regexp parameter | |
1310 | ||
1311 | (P) The internal pattern matching routines are out of their gourd. | |
1312 | ||
1313 | =item Odd number of elements in hash list | |
1314 | ||
1315 | (S) You specified an odd number of elements to a hash list, which is odd, | |
1316 | since hash lists come in key/value pairs. | |
1317 | ||
1318 | =item oops: oopsAV | |
1319 | ||
1320 | (S) An internal warning that the grammar is screwed up. | |
1321 | ||
1322 | =item oops: oopsHV | |
1323 | ||
1324 | (S) An internal warning that the grammar is screwed up. | |
1325 | ||
1326 | =item Operation `%s' %s: no method found, | |
1327 | ||
1328 | (F) An attempt was made to use an entry in an overloading table that | |
1329 | somehow no longer points to a valid method. See L<perlovl>. | |
1330 | ||
748a9306 LW |
1331 | =item Operator or semicolon missing before %s |
1332 | ||
1333 | (S) You used a variable or subroutine call where the parser was | |
1334 | expecting an operator. The parser has assumed you really meant | |
1335 | to use an operator, but this is highly likely to be incorrect. | |
1336 | For example, if you say "*foo *foo" it will be interpreted as | |
1337 | if you said "*foo * 'foo'". | |
1338 | ||
a0d0e21e LW |
1339 | =item Out of memory for yacc stack |
1340 | ||
1341 | (F) The yacc parser wanted to grow its stack so it could continue parsing, | |
1342 | but realloc() wouldn't give it more memory, virtual or otherwise. | |
1343 | ||
1344 | =item Out of memory! | |
1345 | ||
1346 | (X) The malloc() function returned 0, indicating there was insufficient | |
1347 | remaining memory (or virtual memory) to satisfy the request. | |
1348 | ||
1349 | =item page overflow | |
1350 | ||
1351 | (W) A single call to write() produced more lines than can fit on a page. | |
1352 | See L<perlform>. | |
1353 | ||
1354 | =item panic: ck_grep | |
1355 | ||
1356 | (P) Failed an internal consistency check trying to compile a grep. | |
1357 | ||
1358 | =item panic: ck_split | |
1359 | ||
1360 | (P) Failed an internal consistency check trying to compile a split. | |
1361 | ||
1362 | =item panic: corrupt saved stack index | |
1363 | ||
1364 | (P) The savestack was requested to restore more localized values than there | |
1365 | are in the savestack. | |
1366 | ||
1367 | =item panic: die %s | |
1368 | ||
1369 | (P) We popped the context stack to an eval context, and then discovered | |
1370 | it wasn't an eval context. | |
1371 | ||
1372 | =item panic: do_match | |
1373 | ||
1374 | (P) The internal pp_match() routine was called with invalid operational data. | |
1375 | ||
1376 | =item panic: do_split | |
1377 | ||
1378 | (P) Something terrible went wrong in setting up for the split. | |
1379 | ||
1380 | =item panic: do_subst | |
1381 | ||
1382 | (P) The internal pp_subst() routine was called with invalid operational data. | |
1383 | ||
1384 | =item panic: do_trans | |
1385 | ||
1386 | (P) The internal do_trans() routine was called with invalid operational data. | |
1387 | ||
1388 | =item panic: goto | |
1389 | ||
1390 | (P) We popped the context stack to a context with the specified label, | |
1391 | and then discovered it wasn't a context we know how to do a goto in. | |
1392 | ||
1393 | =item panic: INTERPCASEMOD | |
1394 | ||
1395 | (P) The lexer got into a bad state at a case modifier. | |
1396 | ||
1397 | =item panic: INTERPCONCAT | |
1398 | ||
1399 | (P) The lexer got into a bad state parsing a string with brackets. | |
1400 | ||
1401 | =item panic: last | |
1402 | ||
1403 | (P) We popped the context stack to a block context, and then discovered | |
1404 | it wasn't a block context. | |
1405 | ||
1406 | =item panic: leave_scope clearsv | |
1407 | ||
1408 | (P) A writable lexical variable became readonly somehow within the scope. | |
1409 | ||
1410 | =item panic: leave_scope inconsistency | |
1411 | ||
1412 | (P) The savestack probably got out of sync. At least, there was an | |
1413 | invalid enum on the top of it. | |
1414 | ||
1415 | =item panic: malloc | |
1416 | ||
1417 | (P) Something requested a negative number of bytes of malloc. | |
1418 | ||
1419 | =item panic: mapstart | |
1420 | ||
1421 | (P) The compiler is screwed up with respect to the map() function. | |
1422 | ||
1423 | =item panic: null array | |
1424 | ||
1425 | (P) One of the internal array routines was passed a null AV pointer. | |
1426 | ||
1427 | =item panic: pad_alloc | |
1428 | ||
1429 | (P) The compiler got confused about which scratch pad it was allocating | |
1430 | and freeing temporaries and lexicals from. | |
1431 | ||
1432 | =item panic: pad_free curpad | |
1433 | ||
1434 | (P) The compiler got confused about which scratch pad it was allocating | |
1435 | and freeing temporaries and lexicals from. | |
1436 | ||
1437 | =item panic: pad_free po | |
1438 | ||
1439 | (P) An invalid scratch pad offset was detected internally. | |
1440 | ||
1441 | =item panic: pad_reset curpad | |
1442 | ||
1443 | (P) The compiler got confused about which scratch pad it was allocating | |
1444 | and freeing temporaries and lexicals from. | |
1445 | ||
1446 | =item panic: pad_sv po | |
1447 | ||
1448 | (P) An invalid scratch pad offset was detected internally. | |
1449 | ||
1450 | =item panic: pad_swipe curpad | |
1451 | ||
1452 | (P) The compiler got confused about which scratch pad it was allocating | |
1453 | and freeing temporaries and lexicals from. | |
1454 | ||
1455 | =item panic: pad_swipe po | |
1456 | ||
1457 | (P) An invalid scratch pad offset was detected internally. | |
1458 | ||
1459 | =item panic: pp_iter | |
1460 | ||
1461 | (P) The foreach iterator got called in a non-loop context frame. | |
1462 | ||
1463 | =item panic: realloc | |
1464 | ||
1465 | (P) Something requested a negative number of bytes of realloc. | |
1466 | ||
1467 | =item panic: restartop | |
1468 | ||
1469 | (P) Some internal routine requested a goto (or something like it), and | |
1470 | didn't supply the destination. | |
1471 | ||
1472 | =item panic: return | |
1473 | ||
1474 | (P) We popped the context stack to a subroutine or eval context, and | |
1475 | then discovered it wasn't a subroutine or eval context. | |
1476 | ||
1477 | =item panic: scan_num | |
1478 | ||
1479 | (P) scan_num() got called on something that wasn't a number. | |
1480 | ||
1481 | =item panic: sv_insert | |
1482 | ||
1483 | (P) The sv_insert() routine was told to remove more string than there | |
1484 | was string. | |
1485 | ||
1486 | =item panic: top_env | |
1487 | ||
1488 | (P) The compiler attempted to do a goto, or something weird like that. | |
1489 | ||
1490 | =item panic: yylex | |
1491 | ||
1492 | (P) The lexer got into a bad state while processing a case modifier. | |
1493 | ||
1494 | =item Parens missing around "%s" list | |
1495 | ||
1496 | (W) You said something like | |
1497 | ||
1498 | my $foo, $bar = @_; | |
1499 | ||
1500 | when you meant | |
1501 | ||
1502 | my ($foo, $bar) = @_; | |
1503 | ||
1504 | Remember that "my" and "local" bind closer than comma. | |
1505 | ||
1506 | =item Perl %3.3f required--this is only version %s, stopped | |
1507 | ||
1508 | (F) The module in question uses features of a version of Perl more recent | |
1509 | than the currently running version. How long has it been since you upgraded, | |
1510 | anyway? See L<perlfunc/require>. | |
1511 | ||
1512 | =item Permission denied | |
1513 | ||
1514 | (F) The setuid emulator in suidperl decided you were up to no good. | |
1515 | ||
748a9306 LW |
1516 | =item pid %d not a child |
1517 | ||
1518 | (W) A warning peculiar to VMS. Waitpid() was asked to wait for a process which | |
1519 | isn't a subprocess of the current process. While this is fine from VMS' | |
1520 | perspective, it's probably not what you intended. | |
1521 | ||
a0d0e21e LW |
1522 | =item POSIX getpgrp can't take an argument |
1523 | ||
1524 | (F) Your C compiler uses POSIX getpgrp(), which takes no argument, unlike | |
1525 | the BSD version, which takes a pid. | |
1526 | ||
1527 | =item Possible memory corruption: %s overflowed 3rd argument | |
1528 | ||
1529 | (F) An ioctl() or fcntl() returned more than Perl was bargaining for. | |
1530 | Perl guesses a reasonable buffer size, but puts a sentinel byte at the | |
1531 | end of the buffer just in case. This sentinel byte got clobbered, and | |
1532 | Perl assumes that memory is now corrupted. See L<perlfunc/ioctl>. | |
1533 | ||
1534 | =item Precedence problem: open %s should be open(%s) | |
1535 | ||
1536 | (S) The old irregular construct | |
1537 | ||
1538 | open FOO || die; | |
1539 | ||
1540 | is now misinterpreted as | |
1541 | ||
1542 | open(FOO || die); | |
1543 | ||
1544 | because of the strict regularization of Perl 5's grammar into unary and | |
1545 | list operators. (The old open was a little of both.) You must put | |
1546 | parens around the filehandle, or use the new "or" operator instead of "||". | |
1547 | ||
1548 | =item print on closed filehandle %s | |
1549 | ||
1550 | (W) The filehandle you're printing on got itself closed sometime before now. | |
1551 | Check your logic flow. | |
1552 | ||
1553 | =item printf on closed filehandle %s | |
1554 | ||
1555 | (W) The filehandle you're writing to got itself closed sometime before now. | |
1556 | Check your logic flow. | |
1557 | ||
1558 | =item Probable precedence problem on %s | |
1559 | ||
1560 | (W) The compiler found a bare word where it expected a conditional, | |
1561 | which often indicates that an || or && was parsed as part of the | |
1562 | last argument of the previous construct, for example: | |
1563 | ||
1564 | open FOO || die; | |
1565 | ||
1566 | =item Read on closed filehandle <%s> | |
1567 | ||
1568 | (W) The filehandle you're reading from got itself closed sometime before now. | |
1569 | Check your logic flow. | |
1570 | ||
1571 | =item Reallocation too large: %lx | |
1572 | ||
1573 | (F) You can't allocate more than 64K on an MSDOS machine. | |
1574 | ||
1575 | =item Recompile perl with B<-D>DEBUGGING to use B<-D> switch | |
1576 | ||
1577 | (F) You can't use the B<-D> option unless the code to produce the | |
1578 | desired output is compiled into Perl, which entails some overhead, | |
1579 | which is why it's currently left out of your copy. | |
1580 | ||
1581 | =item Recursive inheritance detected | |
1582 | ||
1583 | (F) More than 100 levels of inheritance were used. Probably indicates | |
1584 | an unintended loop in your inheritance hierarchy. | |
1585 | ||
1586 | =item Reference miscount in sv_replace() | |
1587 | ||
1588 | (W) The internal sv_replace() function was handed a new SV with a | |
1589 | reference count of other than 1. | |
1590 | ||
1591 | =item regexp memory corruption | |
1592 | ||
1593 | (P) The regular expression engine got confused by what the regular | |
1594 | expression compiler gave it. | |
1595 | ||
1596 | =item regexp out of space | |
1597 | ||
1598 | (P) A "can't happen" error, because safemalloc() should have caught it earlier. | |
1599 | ||
1600 | =item regexp too big | |
1601 | ||
1602 | (F) The current implementation of regular expression uses shorts as | |
1603 | address offsets within a string. Unfortunately this means that if | |
1604 | the regular expression compiles to longer than 32767, it'll blow up. | |
1605 | Usually when you want a regular expression this big, there is a better | |
1606 | way to do it with multiple statements. See L<perlre>. | |
1607 | ||
1608 | =item Reversed %s= operator | |
1609 | ||
1610 | (W) You wrote your assignment operator backwards. The = must always | |
1611 | comes last, to avoid ambiguity with subsequent unary operators. | |
1612 | ||
1613 | =item Runaway format | |
1614 | ||
1615 | (F) Your format contained the ~~ repeat-until-blank sequence, but it | |
1616 | produced 200 lines at once, and the 200th line looked exactly like the | |
1617 | 199th line. Apparently you didn't arrange for the arguments to exhaust | |
1618 | themselves, either by using ^ instead of @ (for scalar variables), or by | |
1619 | shifting or popping (for array variables). See L<perlform>. | |
1620 | ||
1621 | =item Scalar value @%s[%s] better written as $%s[%s] | |
1622 | ||
1623 | (W) You've used an array slice (indicated by @) to select a single value of | |
1624 | an array. Generally it's better to ask for a scalar value (indicated by $). | |
1625 | The difference is that $foo[&bar] always behaves like a scalar, both when | |
1626 | assigning to it and when evaluating its argument, while @foo[&bar] behaves | |
1627 | like a list when you assign to it, and provides a list context to its | |
1628 | subscript, which can do weird things if you're only expecting one subscript. | |
1629 | ||
748a9306 LW |
1630 | On the other hand, if you were actually hoping to treat the array |
1631 | element as a list, you need to look into how references work, since | |
1632 | Perl will not magically convert between scalars and lists for you. See | |
1633 | L<perlref>. | |
1634 | ||
a0d0e21e LW |
1635 | =item Script is not setuid/setgid in suidperl |
1636 | ||
1637 | (F) Oddly, the suidperl program was invoked on a script with its setuid | |
1638 | or setgid bit set. This doesn't make much sense. | |
1639 | ||
1640 | =item Search pattern not terminated | |
1641 | ||
1642 | (F) The lexer couldn't find the final delimiter of a // or m{} | |
1643 | construct. Remember that bracketing delimiters count nesting level. | |
1644 | ||
1645 | =item seek() on unopened file | |
1646 | ||
1647 | (W) You tried to use the seek() function on a filehandle that was either | |
1648 | never opened or has been closed since. | |
1649 | ||
1650 | =item select not implemented | |
1651 | ||
1652 | (F) This machine doesn't implement the select() system call. | |
1653 | ||
1654 | =item sem%s not implemented | |
1655 | ||
1656 | (F) You don't have System V semaphore IPC on your system. | |
1657 | ||
1658 | =item semi-panic: attempt to dup freed string | |
1659 | ||
1660 | (S) The internal newSVsv() routine was called to duplicate a scalar | |
1661 | that had previously been marked as free. | |
1662 | ||
1663 | =item Semicolon seems to be missing | |
1664 | ||
1665 | (W) A nearby syntax error was probably caused by a missing semicolon, | |
1666 | or possibly some other missing operator, such as a comma. | |
1667 | ||
1668 | =item Send on closed socket | |
1669 | ||
1670 | (W) The filehandle you're sending to got itself closed sometime before now. | |
1671 | Check your logic flow. | |
1672 | ||
1673 | =item Sequence (?#... not terminated | |
1674 | ||
1675 | (F) A regular expression comment must be terminated by a closing | |
1676 | parenthesis. Embedded parens aren't allowed. See L<perlre>. | |
1677 | ||
1678 | =item Sequence (?%s...) not implemented | |
1679 | ||
1680 | (F) A proposed regular expression extension has the character reserved | |
1681 | but has not yet been written. See L<perlre>. | |
1682 | ||
1683 | =item Sequence (?%s...) not recognized | |
1684 | ||
1685 | (F) You used a regular expression extension that doesn't make sense. | |
1686 | See L<perlre>. | |
1687 | ||
1688 | =item setegid() not implemented | |
1689 | ||
1690 | (F) You tried to assign to $), and your operating system doesn't support | |
1691 | the setegid() system call (or equivalent), or at least Configure didn't | |
1692 | think so. | |
1693 | ||
1694 | =item seteuid() not implemented | |
1695 | ||
1696 | (F) You tried to assign to $>, and your operating system doesn't support | |
1697 | the seteuid() system call (or equivalent), or at least Configure didn't | |
1698 | think so. | |
1699 | ||
1700 | =item setrgid() not implemented | |
1701 | ||
1702 | (F) You tried to assign to $(, and your operating system doesn't support | |
1703 | the setrgid() system call (or equivalent), or at least Configure didn't | |
1704 | think so. | |
1705 | ||
1706 | =item setruid() not implemented | |
1707 | ||
1708 | (F) You tried to assign to $<, and your operating system doesn't support | |
1709 | the setruid() system call (or equivalent), or at least Configure didn't | |
1710 | think so. | |
1711 | ||
1712 | =item Setuid/gid script is writable by world | |
1713 | ||
1714 | (F) The setuid emulator won't run a script that is writable by the world, | |
1715 | because the world might have written on it already. | |
1716 | ||
1717 | =item shm%s not implemented | |
1718 | ||
1719 | (F) You don't have System V shared memory IPC on your system. | |
1720 | ||
1721 | =item shutdown() on closed fd | |
1722 | ||
1723 | (W) You tried to do a shutdown on a closed socket. Seems a bit superfluous. | |
1724 | ||
1725 | =item SIG%s handler "%s" not defined. | |
1726 | ||
1727 | (W) The signal handler named in %SIG doesn't, in fact, exist. Perhaps you | |
1728 | put it into the wrong package? | |
1729 | ||
1730 | =item sort is now a reserved word | |
1731 | ||
1732 | (F) An ancient error message that almost nobody ever runs into anymore. | |
1733 | But before sort was a keyword, people sometimes used it as a filehandle. | |
1734 | ||
1735 | =item Sort subroutine didn't return a numeric value | |
1736 | ||
1737 | (F) A sort comparison routine must return a number. You probably blew | |
1738 | it by not using C<E<lt>=E<gt> or C<cmp>, or by not using them correctly. | |
1739 | See L<perlfunc/sort>. | |
1740 | ||
1741 | =item Sort subroutine didn't return single value | |
1742 | ||
1743 | (F) A sort comparison subroutine may not return a list value with more | |
1744 | or less than one element. See L<perlfunc/sort>. | |
1745 | ||
1746 | =item Split loop | |
1747 | ||
1748 | (P) The split was looping infinitely. (Obviously, a split shouldn't iterate | |
1749 | more times than there are characters of input, which is what happened.) | |
1750 | See L<perlfunc/split>. | |
1751 | ||
1752 | =item Stat on unopened file <%s> | |
1753 | ||
1754 | (W) You tried to use the stat() function (or an equivalent file test) | |
1755 | on a filehandle that was either never opened or has been closed since. | |
1756 | ||
1757 | =item Statement unlikely to be reached | |
1758 | ||
1759 | (W) You did an exec() with some statement after it other than a die(). | |
1760 | This is almost always an error, because exec() never returns unless | |
1761 | there was a failure. You probably wanted to use system() instead, | |
1762 | which does return. To suppress this warning, put the exec() in a block | |
1763 | by itself. | |
1764 | ||
1765 | =item Subroutine %s redefined | |
1766 | ||
1767 | (W) You redefined a subroutine. To suppress this warning, say | |
1768 | ||
1769 | { | |
1770 | local $^W = 0; | |
1771 | eval "sub name { ... }"; | |
1772 | } | |
1773 | ||
1774 | =item Substitution loop | |
1775 | ||
1776 | (P) The substitution was looping infinitely. (Obviously, a | |
1777 | substitution shouldn't iterate more times than there are characters of | |
1778 | input, which is what happened.) See the discussion of substitution in | |
1779 | L<perlop/"Quote and Quotelike Operators">. | |
1780 | ||
1781 | =item Substitution pattern not terminated | |
1782 | ||
1783 | (F) The lexer couldn't find the interior delimiter of a s/// or s{}{} | |
1784 | construct. Remember that bracketing delimiters count nesting level. | |
1785 | ||
1786 | =item Substitution replacement not terminated | |
1787 | ||
1788 | (F) The lexer couldn't find the final delimiter of a s/// or s{}{} | |
1789 | construct. Remember that bracketing delimiters count nesting level. | |
1790 | ||
1791 | =item substr outside of string | |
1792 | ||
1793 | (W) You tried to reference a substr() that pointed outside of a string. | |
1794 | That is, the absolute value of the offset was larger than the length of | |
1795 | the string. See L<perlfunc/substr>. | |
1796 | ||
1797 | =item suidperl is no longer needed since... | |
1798 | ||
1799 | (F) Your Perl was compiled with B<-D>SETUID_SCRIPTS_ARE_SECURE_NOW, but a | |
1800 | version of the setuid emulator somehow got run anyway. | |
1801 | ||
1802 | =item syntax error | |
1803 | ||
1804 | (F) Probably means you had a syntax error. Common reasons include: | |
1805 | ||
1806 | A keyword is misspelled. | |
1807 | A semicolon is missing. | |
1808 | A comma is missing. | |
1809 | An opening or closing parenthesis is missing. | |
1810 | An opening or closing brace is missing. | |
1811 | A closing quote is missing. | |
1812 | ||
1813 | Often there will be another error message associated with the syntax | |
1814 | error giving more information. (Sometimes it helps to turn on B<-w>.) | |
1815 | The error message itself often tells you where it was in the line when | |
1816 | it decided to give up. Sometimes the actual error is several tokens | |
1817 | before this, since Perl is good at understanding random input. | |
1818 | Occasionally the line number may be misleading, and once in a blue moon | |
1819 | the only way to figure out what's triggering the error is to call | |
1820 | C<perl -c> repeatedly, chopping away half the program each time to see | |
1821 | if the error went away. Sort of the cybernetic version of S<20 questions>. | |
1822 | ||
1823 | =item System V IPC is not implemented on this machine | |
1824 | ||
1825 | (F) You tried to do something with a function beginning with "sem", "shm" | |
1826 | or "msg". See L<perlfunc/semctl>, for example. | |
1827 | ||
1828 | =item Syswrite on closed filehandle | |
1829 | ||
1830 | (W) The filehandle you're writing to got itself closed sometime before now. | |
1831 | Check your logic flow. | |
1832 | ||
1833 | =item tell() on unopened file | |
1834 | ||
1835 | (W) You tried to use the tell() function on a filehandle that was either | |
1836 | never opened or has been closed since. | |
1837 | ||
1838 | =item Test on unopened file <%s> | |
1839 | ||
1840 | (W) You tried to invoke a file test operator on a filehandle that isn't | |
1841 | open. Check your logic. See also L<perlfunc/-X>. | |
1842 | ||
1843 | =item That use of $[ is unsupported | |
1844 | ||
1845 | (F) Assignment to $[ is now strictly circumscribed, and interpreted as | |
1846 | a compiler directive. You may only say one of | |
1847 | ||
1848 | $[ = 0; | |
1849 | $[ = 1; | |
1850 | ... | |
1851 | local $[ = 0; | |
1852 | local $[ = 1; | |
1853 | ... | |
1854 | ||
1855 | This is to prevent the problem of one module changing the array base | |
1856 | out from under another module inadvertently. See L<perlvar/$[>. | |
1857 | ||
1858 | =item The %s function is unimplemented | |
1859 | ||
1860 | The function indicated isn't implemented on this architecture, according | |
1861 | to the probings of Configure. | |
1862 | ||
1863 | =item The crypt() function is unimplemented due to excessive paranoia. | |
1864 | ||
1865 | (F) Configure couldn't find the crypt() function on your machine, | |
1866 | probably because your vendor didn't supply it, probably because they | |
1867 | think the U.S. Govermnment thinks it's a secret, or at least that they | |
1868 | will continue to pretend that it is. And if you quote me on that, I | |
1869 | will deny it. | |
1870 | ||
1871 | =item The stat preceding C<-l _> wasn't an lstat | |
1872 | ||
1873 | (F) It makes no sense to test the current stat buffer for symbolic linkhood | |
1874 | if the last stat that wrote to the stat buffer already went past | |
1875 | the symlink to get to the real file. Use an actual filename instead. | |
1876 | ||
1877 | =item times not implemented | |
1878 | ||
1879 | (F) Your version of the C library apparently doesn't do times(). I suspect | |
1880 | you're not running on Unix. | |
1881 | ||
1882 | =item Too few args to syscall | |
1883 | ||
1884 | (F) There has to be at least one argument to syscall() to specify the | |
1885 | system call to call, silly dilly. | |
1886 | ||
1887 | =item Too many args to syscall | |
1888 | ||
1889 | (F) Perl only supports a maximum of 14 args to syscall(). | |
1890 | ||
1891 | =item Too many arguments for %s | |
1892 | ||
1893 | (F) The function requires fewer arguments than you specified. | |
1894 | ||
1895 | =item trailing \ in regexp | |
1896 | ||
1897 | (F) The regular expression ends with an unbackslashed backslash. Backslash | |
1898 | it. See L<perlre>. | |
1899 | ||
1900 | =item Translation pattern not terminated | |
1901 | ||
1902 | (F) The lexer couldn't find the interior delimiter of a tr/// or tr[][] | |
1903 | construct. | |
1904 | ||
1905 | =item Translation replacement not terminated | |
1906 | ||
1907 | (F) The lexer couldn't find the final delimiter of a tr/// or tr[][] | |
1908 | construct. | |
1909 | ||
1910 | =item truncate not implemented | |
1911 | ||
1912 | (F) Your machine doesn't implement a file truncation mechanism that | |
1913 | Configure knows about. | |
1914 | ||
1915 | =item Type of arg %d to %s must be %s (not %s) | |
1916 | ||
1917 | (F) This function requires the argument in that position to be of a | |
1918 | certain type. Arrays must be @NAME or @{EXPR}. Hashes must be | |
1919 | %NAME or %{EXPR}. No implicit dereferencing is allowed--use the | |
1920 | {EXPR} forms as an explicit dereference. See L<perlref>. | |
1921 | ||
1922 | =item umask: argument is missing initial 0 | |
1923 | ||
1924 | (W) A umask of 222 is incorrect. It should be 0222, since octal literals | |
1925 | always start with 0 in Perl, as in C. | |
1926 | ||
1927 | =item Unbalanced context: %d more PUSHes than POPs | |
1928 | ||
1929 | (W) The exit code detected an internal inconsistency in how many execution | |
1930 | contexts were entered and left. | |
1931 | ||
1932 | =item Unbalanced saves: %d more saves than restores | |
1933 | ||
1934 | (W) The exit code detected an internal inconsistency in how many | |
1935 | values were temporarily localized. | |
1936 | ||
1937 | =item Unbalanced scopes: %d more ENTERs than LEAVEs | |
1938 | ||
1939 | (W) The exit code detected an internal inconsistency in how many blocks | |
1940 | were entered and left. | |
1941 | ||
1942 | =item Unbalanced tmps: %d more allocs than frees | |
1943 | ||
1944 | (W) The exit code detected an internal inconsistency in how many mortal | |
1945 | scalars were allocated and freed. | |
1946 | ||
1947 | =item Undefined format "%s" called | |
1948 | ||
1949 | (F) The format indicated doesn't seem to exist. Perhaps it's really in | |
1950 | another package? See L<perlform>. | |
1951 | ||
1952 | =item Undefined sort subroutine "%s" called | |
1953 | ||
1954 | (F) The sort comparison routine specified doesn't seem to exist. Perhaps | |
1955 | it's in a different package? See L<perlfunc/sort>. | |
1956 | ||
1957 | =item Undefined subroutine &%s called | |
1958 | ||
1959 | (F) The subroutine indicated hasn't been defined, or if it was, it | |
1960 | has since been undefined. | |
1961 | ||
1962 | =item Undefined subroutine called | |
1963 | ||
1964 | (F) The anonymous subroutine you're trying to call hasn't been defined, | |
1965 | or if it was, it has since been undefined. | |
1966 | ||
1967 | =item Undefined subroutine in sort | |
1968 | ||
1969 | (F) The sort comparison routine specified is declared but doesn't seem to | |
1970 | have been defined yet. See L<perlfunc/sort>. | |
1971 | ||
1972 | =item unexec of %s into %s failed! | |
1973 | ||
1974 | (F) The unexec() routine failed for some reason. See your local FSF | |
1975 | representative, who probably put it there in the first place. | |
1976 | ||
1977 | =item Unknown BYTEORDER | |
1978 | ||
1979 | (F) There are no byteswapping functions for a machine with this byte order. | |
1980 | ||
1981 | =item unmatched () in regexp | |
1982 | ||
1983 | (F) Unbackslashed parentheses must always be balanced in regular | |
1984 | expressions. If you're a vi user, the % key is valuable for finding | |
1985 | the matching paren. See L<perlre>. | |
1986 | ||
1987 | =item Unmatched right bracket | |
1988 | ||
1989 | (F) The lexer counted more closing curly brackets (braces) than opening | |
1990 | ones, so you're probably missing an opening bracket. As a general | |
1991 | rule, you'll find the missing one (so to speak) near the place you were | |
1992 | last editing. | |
1993 | ||
1994 | =item unmatched [] in regexp | |
1995 | ||
1996 | (F) The brackets around a character class must match. If you wish to | |
1997 | include a closing bracket in a character class, backslash it or put it first. | |
1998 | See L<perlre>. | |
1999 | ||
2000 | =item Unquoted string "%s" may clash with future reserved word | |
2001 | ||
2002 | (W) You used a bare word that might someday be claimed as a reserved word. | |
2003 | It's best to put such a word in quotes, or capitalize it somehow, or insert | |
2004 | an underbar into it. You might also declare it as a subroutine. | |
2005 | ||
2006 | =item Unrecognized character \%03o ignored | |
2007 | ||
2008 | (S) A garbage character was found in the input, and ignored, in case it's | |
2009 | a weird control character on an EBCDIC machine, or some such. | |
2010 | ||
2011 | =item Unrecognized signal name "%s" | |
2012 | ||
2013 | (F) You specified a signal name to the kill() function that was not recognized. | |
2014 | Say C<kill -l> in your shell to see the valid signal names on your system. | |
2015 | ||
2016 | =item Unrecognized switch: -%s | |
2017 | ||
2018 | (F) You specified an illegal option to Perl. Don't do that. | |
2019 | (If you think you didn't do that, check the #! line to see if it's | |
2020 | supplying the bad switch on your behalf.) | |
2021 | ||
2022 | =item Unsuccessful %s on filename containing newline | |
2023 | ||
2024 | (W) A file operation was attempted on a filename, and that operation | |
2025 | failed, PROBABLY because the filename contained a newline, PROBABLY | |
2026 | because you forgot to chop() or chomp() it off. See L<perlfunc/chop>. | |
2027 | ||
2028 | =item Unsupported directory function "%s" called | |
2029 | ||
2030 | (F) Your machine doesn't support opendir() and readdir(). | |
2031 | ||
2032 | =item Unsupported function %s | |
2033 | ||
2034 | (F) This machines doesn't implement the indicated function, apparently. | |
2035 | At least, Configure doesn't think so. | |
2036 | ||
2037 | =item Unsupported socket function "%s" called | |
2038 | ||
2039 | (F) Your machine doesn't support the Berkeley socket mechanism, or at | |
2040 | least that's what Configure thought. | |
2041 | ||
2042 | =item Unterminated <> operator | |
2043 | ||
2044 | (F) The lexer saw a left angle bracket in a place where it was expecting | |
2045 | a term, so it's looking for the corresponding right angle bracket, and not | |
2046 | finding it. Chances are you left some needed parentheses out earlier in | |
2047 | the line, and you really meant a "less than". | |
2048 | ||
2049 | =item Use of $# is deprecated | |
2050 | ||
2051 | (D) This was an ill-advised attempt to emulate a poorly defined awk feature. | |
2052 | Use an explicit printf() or sprintf() instead. | |
2053 | ||
2054 | =item Use of $* is deprecated | |
2055 | ||
2056 | (D) This variable magically turned on multiline pattern matching, both for | |
2057 | you and for any luckless subroutine that you happen to call. You should | |
2058 | use the new C<//m> and C<//s> modifiers now to do that without the dangerous | |
2059 | action-at-a-distance effects of C<$*>. | |
2060 | ||
748a9306 LW |
2061 | =item Use of %s in printf format not supported |
2062 | ||
2063 | (F) You attempted to use a feature of printf that is accessible only | |
2064 | from C. This usually means there's a better way to do it in Perl. | |
2065 | ||
a0d0e21e LW |
2066 | =item Use of %s is deprecated |
2067 | ||
2068 | (D) The construct indicated is no longer recommended for use, generally | |
2069 | because there's a better way to do it, and also because the old way has | |
2070 | bad side effects. | |
2071 | ||
2072 | =item Use of implicit split to @_ is deprecated | |
2073 | ||
2074 | (D) It makes a lot of work for the compiler when you clobber a | |
2075 | subroutine's argument list, so it's better if you assign the results of | |
2076 | a split() explicitly to an array (or list). | |
2077 | ||
2078 | =item Use of uninitialized value | |
2079 | ||
2080 | (W) An undefined value was used as if it were already defined. It was | |
2081 | interpreted as a "" or a 0, but maybe it was a mistake. To suppress this | |
2082 | warning assign an initial value to your variables. | |
2083 | ||
2084 | =item Useless use of %s in void context | |
2085 | ||
2086 | (W) You did something without a side effect in a context that does nothing | |
2087 | with the return value, such as a statement that doesn't return a value | |
2088 | from a block, or the left side of a scalar comma operator. Very often | |
2089 | this points not to stupidity on your part, but a failure of Perl to parse | |
2090 | your program the way you thought it would. For example, you'd get this | |
2091 | if you mixed up your C precedence with Python precedence and said | |
2092 | ||
2093 | $one, $two = 1, 2; | |
2094 | ||
2095 | when you meant to say | |
2096 | ||
2097 | ($one, $two) = (1, 2); | |
2098 | ||
748a9306 LW |
2099 | Another common error is to use ordinary parentheses to construct a list |
2100 | reference when you should be using square or curly brackets, for | |
2101 | example, if you say | |
2102 | ||
2103 | $array = (1,2); | |
2104 | ||
2105 | when you should have said | |
2106 | ||
2107 | $array = [1,2]; | |
2108 | ||
2109 | The square brackets explicitly turn a list value into a scalar value, | |
2110 | while parentheses do not. So when a parenthesized list is evaluated in | |
2111 | a scalar context, the comma is treated like C's comma operator, which | |
2112 | throws away the left argument, which is not what you want. See | |
2113 | L<perlref> for more on this. | |
2114 | ||
a0d0e21e LW |
2115 | =item Warning: unable to close filehandle %s properly. |
2116 | ||
2117 | (S) The implicit close() done by an open() got an error indication on the | |
2118 | close(0. This usually indicates your filesystem ran out of disk space. | |
2119 | ||
2120 | =item Warning: Use of "%s" without parens is ambiguous | |
2121 | ||
2122 | (S) You wrote a unary operator followed by something that looks like a | |
2123 | binary operator that could also have been interpreted as a term or | |
2124 | unary operator. For instance, if you know that the rand function | |
2125 | has a default argument of 1.0, and you write | |
2126 | ||
2127 | rand + 5; | |
2128 | ||
2129 | you may THINK you wrote the same thing as | |
2130 | ||
2131 | rand() + 5; | |
2132 | ||
2133 | but in actual fact, you got | |
2134 | ||
2135 | rand(+5); | |
2136 | ||
2137 | So put in parens to say what you really mean. | |
2138 | ||
2139 | =item Write on closed filehandle | |
2140 | ||
2141 | (W) The filehandle you're writing to got itself closed sometime before now. | |
2142 | Check your logic flow. | |
2143 | ||
2144 | =item X outside of string | |
2145 | ||
2146 | (F) You had a pack template that specified a relative position before | |
2147 | the beginning of the string being unpacked. See L<perlfunc/pack>. | |
2148 | ||
2149 | =item x outside of string | |
2150 | ||
2151 | (F) You had a pack template that specified a relative position after | |
2152 | the end of the string being unpacked. See L<perlfunc/pack>. | |
2153 | ||
2154 | =item Xsub "%s" called in sort | |
2155 | ||
2156 | (F) The use of an external subroutine as a sort comparison is not yet supported. | |
2157 | ||
2158 | =item Xsub called in sort | |
2159 | ||
2160 | (F) The use of an external subroutine as a sort comparison is not yet supported. | |
2161 | ||
2162 | =item You can't use C<-l> on a filehandle | |
2163 | ||
2164 | (F) A filehandle represents an opened file, and when you opened the file it | |
2165 | already went past any symlink you are presumably trying to look for. | |
2166 | Use a filename instead. | |
2167 | ||
2168 | =item YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET! | |
2169 | ||
2170 | (F) And you probably never will, since you probably don't have the | |
2171 | sources to your kernel, and your vendor probably doesn't give a rip | |
2172 | about what you want. Your best bet is to use the wrapsuid script in | |
2173 | the eg directory to put a setuid C wrapper around your script. | |
2174 | ||
2175 | =item You need to quote "%s" | |
2176 | ||
2177 | (W) You assigned a bareword as a signal handler name. Unfortunately, you | |
2178 | already have a subroutine of that name declared, which means that Perl 5 | |
2179 | will try to call the subroutine when the assignment is executed, which is | |
2180 | probably not what you want. (If it IS what you want, put an & in front.) | |
2181 | ||
2182 | =item [gs]etsockopt() on closed fd | |
2183 | ||
2184 | (W) You tried to get or set a socket option on a closed socket. | |
2185 | Did you forget to check the return value of your socket() call? | |
2186 | See L<perlfunc/getsockopt>. | |
2187 | ||
2188 | =item \1 better written as $1 | |
2189 | ||
2190 | (W) Outside of patterns, backreferences live on as variables. The use | |
2191 | of backslashes is grandfathered on the righthand side of a | |
2192 | substitution, but stylistically it's better to use the variable form | |
2193 | because other Perl programmers will expect it, and it works better | |
2194 | if there are more than 9 backreferences. | |
2195 | ||
748a9306 LW |
2196 | =item '|' and '<' may not both be specified on command line |
2197 | ||
2198 | (F) An error peculiar to VMS. Perl does its own command line redirection, and | |
2199 | found that STDIN was a pipe, and that you also tried to redirect STDIN using | |
2200 | '<'. Only one STDIN stream to a customer, please. | |
2201 | ||
2202 | =item '|' and '>' may not both be specified on command line | |
2203 | ||
2204 | (F) An error peculiar to VMS. Perl does its own command line redirection, and | |
2205 | thinks you tried to redirect stdout both to a file and into a pipe to another | |
2206 | command. You need to choose one or the other, though nothing's stopping you | |
2207 | from piping into a program or Perl script which 'splits' output into two | |
2208 | streams, such as | |
2209 | ||
2210 | open(OUT,">$ARGV[0]") or die "Can't write to $ARGV[0]: $!"; | |
2211 | while (<STDIN>) { | |
2212 | print; | |
2213 | print OUT; | |
2214 | } | |
2215 | close OUT; | |
2216 | ||
a0d0e21e LW |
2217 | =back |
2218 |