Commit | Line | Data |
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a0d0e21e LW |
1 | =head1 NAME |
2 | ||
3 | perldiag - various Perl diagnostics | |
4 | ||
5 | =head1 DESCRIPTION | |
6 | ||
7 | These messages are classified as follows (listed in increasing order of | |
8 | desperation): | |
9 | ||
10 | (W) A warning (optional). | |
11 | (D) A deprecation (optional). | |
e476b1b5 | 12 | (S) A severe warning (default). |
a0d0e21e LW |
13 | (F) A fatal error (trappable). |
14 | (P) An internal error you should never see (trappable). | |
54310121 | 15 | (X) A very fatal error (nontrappable). |
cb1a09d0 | 16 | (A) An alien error message (not generated by Perl). |
a0d0e21e | 17 | |
75b44862 GS |
18 | The majority of messages from the first three classifications above |
19 | (W, D & S) can be controlled using the C<warnings> pragma. | |
e476b1b5 GS |
20 | |
21 | If a message can be controlled by the C<warnings> pragma, its warning | |
22 | category is included with the classification letter in the description | |
23 | below. | |
24 | ||
25 | Optional warnings are enabled by using the C<warnings> pragma or the B<-w> | |
26 | and B<-W> switches. Warnings may be captured by setting C<$SIG{__WARN__}> | |
27 | to a reference to a routine that will be called on each warning instead | |
28 | of printing it. See L<perlvar>. | |
29 | ||
30 | Default warnings are always enabled unless they are explicitly disabled | |
31 | with the C<warnings> pragma or the B<-X> switch. | |
4438c4b7 | 32 | |
748a9306 | 33 | Trappable errors may be trapped using the eval operator. See |
4438c4b7 JH |
34 | L<perlfunc/eval>. In almost all cases, warnings may be selectively |
35 | disabled or promoted to fatal errors using the C<warnings> pragma. | |
36 | See L<warnings>. | |
a0d0e21e | 37 | |
6df41af2 GS |
38 | The messages are in alphabetical order, without regard to upper or |
39 | lower-case. Some of these messages are generic. Spots that vary are | |
40 | denoted with a %s or other printf-style escape. These escapes are | |
41 | ignored by the alphabetical order, as are all characters other than | |
42 | letters. To look up your message, just ignore anything that is not a | |
43 | letter. | |
a0d0e21e LW |
44 | |
45 | =over 4 | |
46 | ||
6df41af2 | 47 | =item accept() on closed socket %s |
33633739 | 48 | |
be771a83 GS |
49 | (W closed) You tried to do an accept on a closed socket. Did you forget |
50 | to check the return value of your socket() call? See | |
51 | L<perlfunc/accept>. | |
33633739 | 52 | |
6df41af2 | 53 | =item Allocation too large: %lx |
a0d0e21e | 54 | |
6df41af2 | 55 | (X) You can't allocate more than 64K on an MS-DOS machine. |
a0d0e21e | 56 | |
f61d411c | 57 | =item '!' allowed only after types %s |
ef54e1a4 | 58 | |
f61d411c JH |
59 | (F) The '!' is allowed in pack() and unpack() only after certain types. |
60 | See L<perlfunc/pack>. | |
ef54e1a4 | 61 | |
6df41af2 | 62 | =item Ambiguous call resolved as CORE::%s(), qualify as such or use & |
43192e07 | 63 | |
75b44862 | 64 | (W ambiguous) A subroutine you have declared has the same name as a Perl |
be771a83 GS |
65 | keyword, and you have used the name without qualification for calling |
66 | one or the other. Perl decided to call the builtin because the | |
67 | subroutine is not imported. | |
43192e07 | 68 | |
6df41af2 GS |
69 | To force interpretation as a subroutine call, either put an ampersand |
70 | before the subroutine name, or qualify the name with its package. | |
71 | Alternatively, you can import the subroutine (or pretend that it's | |
72 | imported with the C<use subs> pragma). | |
43192e07 | 73 | |
6df41af2 GS |
74 | To silently interpret it as the Perl operator, use the C<CORE::> prefix |
75 | on the operator (e.g. C<CORE::log($x)>) or by declaring the subroutine | |
be771a83 GS |
76 | to be an object method (see L<perlsub/"Subroutine Attributes"> or |
77 | L<attributes>). | |
43192e07 | 78 | |
c2e66d9e GS |
79 | =item Ambiguous range in transliteration operator |
80 | ||
81 | (F) You wrote something like C<tr/a-z-0//> which doesn't mean anything at | |
82 | all. To include a C<-> character in a transliteration, put it either | |
83 | first or last. (In the past, C<tr/a-z-0//> was synonymous with | |
84 | C<tr/a-y//>, which was probably not what you would have expected.) | |
85 | ||
6df41af2 | 86 | =item Ambiguous use of %s resolved as %s |
43192e07 | 87 | |
6df41af2 GS |
88 | (W ambiguous)(S) You said something that may not be interpreted the way |
89 | you thought. Normally it's pretty easy to disambiguate it by supplying | |
90 | a missing quote, operator, parenthesis pair or declaration. | |
a0d0e21e | 91 | |
6df41af2 | 92 | =item '|' and '<' may not both be specified on command line |
a0d0e21e | 93 | |
be771a83 GS |
94 | (F) An error peculiar to VMS. Perl does its own command line |
95 | redirection, and found that STDIN was a pipe, and that you also tried to | |
96 | redirect STDIN using '<'. Only one STDIN stream to a customer, please. | |
c9f97d15 | 97 | |
6df41af2 | 98 | =item '|' and '>' may not both be specified on command line |
1028017a | 99 | |
be771a83 GS |
100 | (F) An error peculiar to VMS. Perl does its own command line |
101 | redirection, and thinks you tried to redirect stdout both to a file and | |
102 | into a pipe to another command. You need to choose one or the other, | |
103 | though nothing's stopping you from piping into a program or Perl script | |
104 | which 'splits' output into two streams, such as | |
1028017a | 105 | |
6df41af2 GS |
106 | open(OUT,">$ARGV[0]") or die "Can't write to $ARGV[0]: $!"; |
107 | while (<STDIN>) { | |
108 | print; | |
109 | print OUT; | |
110 | } | |
111 | close OUT; | |
c9f97d15 | 112 | |
6df41af2 | 113 | =item Applying %s to %s will act on scalar(%s) |
eb6e2d6f | 114 | |
be771a83 GS |
115 | (W misc) The pattern match (//), substitution (s///), and |
116 | transliteration (tr///) operators work on scalar values. If you apply | |
117 | one of them to an array or a hash, it will convert the array or hash to | |
118 | a scalar value -- the length of an array, or the population info of a | |
119 | hash -- and then work on that scalar value. This is probably not what | |
120 | you meant to do. See L<perlfunc/grep> and L<perlfunc/map> for | |
121 | alternatives. | |
eb6e2d6f | 122 | |
6df41af2 | 123 | =item Args must match #! line |
a0d0e21e | 124 | |
6df41af2 GS |
125 | (F) The setuid emulator requires that the arguments Perl was invoked |
126 | with match the arguments specified on the #! line. Since some systems | |
127 | impose a one-argument limit on the #! line, try combining switches; | |
128 | for example, turn C<-w -U> into C<-wU>. | |
a0d0e21e | 129 | |
6df41af2 | 130 | =item Arg too short for msgsnd |
76cd736e | 131 | |
6df41af2 | 132 | (F) msgsnd() requires a string at least as long as sizeof(long). |
76cd736e | 133 | |
8ea97a1e | 134 | =item %s argument is not a HASH or ARRAY element |
a0d0e21e | 135 | |
8ea97a1e | 136 | (F) The argument to exists() must be a hash or array element, such as: |
a0d0e21e LW |
137 | |
138 | $foo{$bar} | |
cb4f522a | 139 | $ref->{"susie"}[12] |
a0d0e21e | 140 | |
8ea97a1e | 141 | =item %s argument is not a HASH or ARRAY element or slice |
5f05dabc | 142 | |
be771a83 GS |
143 | (F) The argument to delete() must be either a hash or array element, |
144 | such as: | |
5f05dabc | 145 | |
146 | $foo{$bar} | |
cb4f522a | 147 | $ref->{"susie"}[12] |
5f05dabc | 148 | |
8ea97a1e | 149 | or a hash or array slice, such as: |
5f05dabc | 150 | |
6df41af2 GS |
151 | @foo[$bar, $baz, $xyzzy] |
152 | @{$ref->[12]}{"susie", "queue"} | |
5315574d | 153 | |
6df41af2 | 154 | =item %s argument is not a subroutine name |
a0d0e21e | 155 | |
6df41af2 | 156 | (F) The argument to exists() for C<exists &sub> must be a subroutine |
be771a83 GS |
157 | name, and not a subroutine call. C<exists &sub()> will generate this |
158 | error. | |
a0d0e21e | 159 | |
f86702cc | 160 | =item Argument "%s" isn't numeric%s |
a0d0e21e | 161 | |
be771a83 GS |
162 | (W numeric) The indicated string was fed as an argument to an operator |
163 | that expected a numeric value instead. If you're fortunate the message | |
164 | will identify which operator was so unfortunate. | |
a0d0e21e LW |
165 | |
166 | =item Array @%s missing the @ in argument %d of %s() | |
167 | ||
75b44862 GS |
168 | (D deprecated) Really old Perl let you omit the @ on array names in some |
169 | spots. This is now heavily deprecated. | |
a0d0e21e LW |
170 | |
171 | =item assertion botched: %s | |
172 | ||
173 | (P) The malloc package that comes with Perl had an internal failure. | |
174 | ||
175 | =item Assertion failed: file "%s" | |
176 | ||
177 | (P) A general assertion failed. The file in question must be examined. | |
178 | ||
179 | =item Assignment to both a list and a scalar | |
180 | ||
181 | (F) If you assign to a conditional operator, the 2nd and 3rd arguments | |
182 | must either both be scalars or both be lists. Otherwise Perl won't | |
183 | know which context to supply to the right side. | |
184 | ||
5243b939 | 185 | =item Negative offset to vec in lvalue context |
fe58ced6 | 186 | |
5243b939 RK |
187 | (F) When vec is called in an lvalue context, the second argument must be |
188 | greater than or equal to zero. | |
fe58ced6 | 189 | |
81689caa HS |
190 | =item Attempt to bless into a reference |
191 | ||
192 | (F) The CLASSNAME argument to the bless() operator is expected to be | |
193 | the name of the package to bless the resulting object into. You've | |
194 | supplied instead a reference to something: perhaps you wrote | |
195 | ||
196 | bless $self, $proto; | |
197 | ||
198 | when you intended | |
199 | ||
200 | bless $self, ref($proto) || $proto; | |
201 | ||
202 | If you actually want to bless into the stringified version | |
203 | of the reference supplied, you need to stringify it yourself, for | |
204 | example by: | |
205 | ||
206 | bless $self, "$proto"; | |
207 | ||
a0d0e21e LW |
208 | =item Attempt to free non-arena SV: 0x%lx |
209 | ||
be771a83 GS |
210 | (P internal) All SV objects are supposed to be allocated from arenas |
211 | that will be garbage collected on exit. An SV was discovered to be | |
212 | outside any of those arenas. | |
a0d0e21e | 213 | |
54310121 | 214 | =item Attempt to free nonexistent shared string |
bbce6d69 | 215 | |
be771a83 GS |
216 | (P internal) Perl maintains a reference counted internal table of |
217 | strings to optimize the storage and access of hash keys and other | |
218 | strings. This indicates someone tried to decrement the reference count | |
219 | of a string that can no longer be found in the table. | |
bbce6d69 | 220 | |
a0d0e21e LW |
221 | =item Attempt to free temp prematurely |
222 | ||
be771a83 GS |
223 | (W debugging) Mortalized values are supposed to be freed by the |
224 | free_tmps() routine. This indicates that something else is freeing the | |
225 | SV before the free_tmps() routine gets a chance, which means that the | |
226 | free_tmps() routine will be freeing an unreferenced scalar when it does | |
227 | try to free it. | |
a0d0e21e LW |
228 | |
229 | =item Attempt to free unreferenced glob pointers | |
230 | ||
e476b1b5 | 231 | (P internal) The reference counts got screwed up on symbol aliases. |
a0d0e21e LW |
232 | |
233 | =item Attempt to free unreferenced scalar | |
234 | ||
be771a83 GS |
235 | (W internal) Perl went to decrement the reference count of a scalar to |
236 | see if it would go to 0, and discovered that it had already gone to 0 | |
237 | earlier, and should have been freed, and in fact, probably was freed. | |
238 | This could indicate that SvREFCNT_dec() was called too many times, or | |
239 | that SvREFCNT_inc() was called too few times, or that the SV was | |
240 | mortalized when it shouldn't have been, or that memory has been | |
241 | corrupted. | |
a0d0e21e | 242 | |
dcdda58d GS |
243 | =item Attempt to join self |
244 | ||
245 | (F) You tried to join a thread from within itself, which is an | |
be771a83 GS |
246 | impossible task. You may be joining the wrong thread, or you may need |
247 | to move the join() to some other thread. | |
dcdda58d | 248 | |
84902520 TB |
249 | =item Attempt to pack pointer to temporary value |
250 | ||
be771a83 GS |
251 | (W pack) You tried to pass a temporary value (like the result of a |
252 | function, or a computed expression) to the "p" pack() template. This | |
253 | means the result contains a pointer to a location that could become | |
254 | invalid anytime, even before the end of the current statement. Use | |
255 | literals or global values as arguments to the "p" pack() template to | |
256 | avoid this warning. | |
84902520 | 257 | |
b7a902f4 | 258 | =item Attempt to use reference as lvalue in substr |
259 | ||
be771a83 GS |
260 | (W substr) You supplied a reference as the first argument to substr() |
261 | used as an lvalue, which is pretty strange. Perhaps you forgot to | |
262 | dereference it first. See L<perlfunc/substr>. | |
b7a902f4 | 263 | |
a0d0e21e LW |
264 | =item Bad arg length for %s, is %d, should be %d |
265 | ||
be771a83 GS |
266 | (F) You passed a buffer of the wrong size to one of msgctl(), semctl() |
267 | or shmctl(). In C parlance, the correct sizes are, respectively, | |
5f05dabc | 268 | S<sizeof(struct msqid_ds *)>, S<sizeof(struct semid_ds *)>, and |
a0d0e21e LW |
269 | S<sizeof(struct shmid_ds *)>. |
270 | ||
7a95317d GS |
271 | =item Bad evalled substitution pattern |
272 | ||
273 | (F) You've used the /e switch to evaluate the replacement for a | |
274 | substitution, but perl found a syntax error in the code to evaluate, | |
275 | most likely an unexpected right brace '}'. | |
276 | ||
a0d0e21e LW |
277 | =item Bad filehandle: %s |
278 | ||
be771a83 GS |
279 | (F) A symbol was passed to something wanting a filehandle, but the |
280 | symbol has no filehandle associated with it. Perhaps you didn't do an | |
281 | open(), or did it in another package. | |
a0d0e21e LW |
282 | |
283 | =item Bad free() ignored | |
284 | ||
be771a83 GS |
285 | (S malloc) An internal routine called free() on something that had never |
286 | been malloc()ed in the first place. Mandatory, but can be disabled by | |
9ea8bc6d | 287 | setting environment variable C<PERL_BADFREE> to 0. |
33c8a3fe | 288 | |
9ea8bc6d | 289 | This message can be seen quite often with DB_File on systems with "hard" |
be771a83 GS |
290 | dynamic linking, like C<AIX> and C<OS/2>. It is a bug of C<Berkeley DB> |
291 | which is left unnoticed if C<DB> uses I<forgiving> system malloc(). | |
a0d0e21e | 292 | |
aa689395 | 293 | =item Bad hash |
294 | ||
295 | (P) One of the internal hash routines was passed a null HV pointer. | |
296 | ||
f1192cee GA |
297 | =item Bad index while coercing array into hash |
298 | ||
6f54a448 GS |
299 | (F) The index looked up in the hash found as the 0'th element of a |
300 | pseudo-hash is not legal. Index values must be at 1 or greater. | |
301 | See L<perlref>. | |
57079c46 | 302 | |
6df41af2 GS |
303 | =item Badly placed ()'s |
304 | ||
305 | (A) You've accidentally run your script through B<csh> instead | |
306 | of Perl. Check the #! line, or manually feed your script into | |
307 | Perl yourself. | |
308 | ||
a0d0e21e LW |
309 | =item Bad name after %s:: |
310 | ||
be771a83 GS |
311 | (F) You started to name a symbol by using a package prefix, and then |
312 | didn't finish the symbol. In particular, you can't interpolate outside | |
313 | of quotes, so | |
a0d0e21e LW |
314 | |
315 | $var = 'myvar'; | |
316 | $sym = mypack::$var; | |
317 | ||
318 | is not the same as | |
319 | ||
320 | $var = 'myvar'; | |
321 | $sym = "mypack::$var"; | |
322 | ||
4ad56ec9 IZ |
323 | =item Bad realloc() ignored |
324 | ||
be771a83 GS |
325 | (S malloc) An internal routine called realloc() on something that had |
326 | never been malloc()ed in the first place. Mandatory, but can be disabled | |
327 | by setting environment variable C<PERL_BADFREE> to 1. | |
4ad56ec9 | 328 | |
a0d0e21e LW |
329 | =item Bad symbol for array |
330 | ||
331 | (P) An internal request asked to add an array entry to something that | |
332 | wasn't a symbol table entry. | |
333 | ||
334 | =item Bad symbol for filehandle | |
335 | ||
be771a83 GS |
336 | (P) An internal request asked to add a filehandle entry to something |
337 | that wasn't a symbol table entry. | |
a0d0e21e LW |
338 | |
339 | =item Bad symbol for hash | |
340 | ||
341 | (P) An internal request asked to add a hash entry to something that | |
342 | wasn't a symbol table entry. | |
343 | ||
34d09196 GS |
344 | =item Bareword found in conditional |
345 | ||
be771a83 GS |
346 | (W bareword) The compiler found a bareword where it expected a |
347 | conditional, which often indicates that an || or && was parsed as part | |
348 | of the last argument of the previous construct, for example: | |
34d09196 GS |
349 | |
350 | open FOO || die; | |
351 | ||
be771a83 GS |
352 | It may also indicate a misspelled constant that has been interpreted as |
353 | a bareword: | |
34d09196 GS |
354 | |
355 | use constant TYPO => 1; | |
356 | if (TYOP) { print "foo" } | |
357 | ||
358 | The C<strict> pragma is useful in avoiding such errors. | |
359 | ||
6df41af2 GS |
360 | =item Bareword "%s" not allowed while "strict subs" in use |
361 | ||
362 | (F) With "strict subs" in use, a bareword is only allowed as a | |
be771a83 GS |
363 | subroutine identifier, in curly brackets or to the left of the "=>" |
364 | symbol. Perhaps you need to predeclare a subroutine? | |
6df41af2 GS |
365 | |
366 | =item Bareword "%s" refers to nonexistent package | |
367 | ||
be771a83 GS |
368 | (W bareword) You used a qualified bareword of the form C<Foo::>, but the |
369 | compiler saw no other uses of that namespace before that point. Perhaps | |
370 | you need to predeclare a package? | |
6df41af2 | 371 | |
a0d0e21e LW |
372 | =item BEGIN failed--compilation aborted |
373 | ||
be771a83 GS |
374 | (F) An untrapped exception was raised while executing a BEGIN |
375 | subroutine. Compilation stops immediately and the interpreter is | |
376 | exited. | |
a0d0e21e | 377 | |
68dc0745 | 378 | =item BEGIN not safe after errors--compilation aborted |
379 | ||
380 | (F) Perl found a C<BEGIN {}> subroutine (or a C<use> directive, which | |
be771a83 GS |
381 | implies a C<BEGIN {}>) after one or more compilation errors had already |
382 | occurred. Since the intended environment for the C<BEGIN {}> could not | |
383 | be guaranteed (due to the errors), and since subsequent code likely | |
384 | depends on its correct operation, Perl just gave up. | |
68dc0745 | 385 | |
6df41af2 GS |
386 | =item \1 better written as $1 |
387 | ||
be771a83 GS |
388 | (W syntax) Outside of patterns, backreferences live on as variables. |
389 | The use of backslashes is grandfathered on the right-hand side of a | |
390 | substitution, but stylistically it's better to use the variable form | |
391 | because other Perl programmers will expect it, and it works better if | |
392 | there are more than 9 backreferences. | |
6df41af2 | 393 | |
252aa082 JH |
394 | =item Binary number > 0b11111111111111111111111111111111 non-portable |
395 | ||
e476b1b5 | 396 | (W portable) The binary number you specified is larger than 2**32-1 |
9e24b6e2 JH |
397 | (4294967295) and therefore non-portable between systems. See |
398 | L<perlport> for more on portability concerns. | |
252aa082 | 399 | |
69282e91 | 400 | =item bind() on closed socket %s |
a0d0e21e | 401 | |
be771a83 GS |
402 | (W closed) You tried to do a bind on a closed socket. Did you forget to |
403 | check the return value of your socket() call? See L<perlfunc/bind>. | |
a0d0e21e | 404 | |
c289d2f7 JH |
405 | =item binmode() on closed filehandle %s |
406 | ||
407 | (W unopened) You tried binmode() on a filehandle that was never opened. | |
408 | Check you control flow and number of arguments. | |
409 | ||
c5a0f51a JH |
410 | =item Bit vector size > 32 non-portable |
411 | ||
e476b1b5 | 412 | (W portable) Using bit vector sizes larger than 32 is non-portable. |
c5a0f51a | 413 | |
4633a7c4 LW |
414 | =item Bizarre copy of %s in %s |
415 | ||
be771a83 | 416 | (P) Perl detected an attempt to copy an internal value that is not |
b45f050a | 417 | copyable. |
4633a7c4 | 418 | |
6df41af2 GS |
419 | =item B<-P> not allowed for setuid/setgid script |
420 | ||
421 | (F) The script would have to be opened by the C preprocessor by name, | |
422 | which provides a race condition that breaks security. | |
423 | ||
f675dbe5 CB |
424 | =item Buffer overflow in prime_env_iter: %s |
425 | ||
be771a83 GS |
426 | (W internal) A warning peculiar to VMS. While Perl was preparing to |
427 | iterate over %ENV, it encountered a logical name or symbol definition | |
428 | which was too long, so it was truncated to the string shown. | |
f675dbe5 | 429 | |
a0d0e21e LW |
430 | =item Callback called exit |
431 | ||
4929bf7b | 432 | (F) A subroutine invoked from an external package via call_sv() |
a0d0e21e LW |
433 | exited by calling exit. |
434 | ||
6df41af2 | 435 | =item %s() called too early to check prototype |
f675dbe5 | 436 | |
be771a83 GS |
437 | (W prototype) You've called a function that has a prototype before the |
438 | parser saw a definition or declaration for it, and Perl could not check | |
439 | that the call conforms to the prototype. You need to either add an | |
440 | early prototype declaration for the subroutine in question, or move the | |
441 | subroutine definition ahead of the call to get proper prototype | |
442 | checking. Alternatively, if you are certain that you're calling the | |
443 | function correctly, you may put an ampersand before the name to avoid | |
444 | the warning. See L<perlsub>. | |
f675dbe5 | 445 | |
6df41af2 | 446 | =item / cannot take a count |
a0d0e21e | 447 | |
be771a83 GS |
448 | (F) You had an unpack template indicating a counted-length string, but |
449 | you have also specified an explicit size for the string. See | |
450 | L<perlfunc/pack>. | |
a0d0e21e LW |
451 | |
452 | =item Can't bless non-reference value | |
453 | ||
454 | (F) Only hard references may be blessed. This is how Perl "enforces" | |
455 | encapsulation of objects. See L<perlobj>. | |
456 | ||
a0d0e21e LW |
457 | =item Can't call method "%s" in empty package "%s" |
458 | ||
459 | (F) You called a method correctly, and it correctly indicated a package | |
460 | functioning as a class, but that package doesn't have ANYTHING defined | |
461 | in it, let alone methods. See L<perlobj>. | |
462 | ||
6df41af2 GS |
463 | =item Can't call method "%s" on an undefined value |
464 | ||
465 | (F) You used the syntax of a method call, but the slot filled by the | |
be771a83 GS |
466 | object reference or package name contains an undefined value. Something |
467 | like this will reproduce the error: | |
6df41af2 GS |
468 | |
469 | $BADREF = undef; | |
470 | process $BADREF 1,2,3; | |
471 | $BADREF->process(1,2,3); | |
472 | ||
a0d0e21e LW |
473 | =item Can't call method "%s" on unblessed reference |
474 | ||
54310121 | 475 | (F) A method call must know in what package it's supposed to run. It |
be771a83 GS |
476 | ordinarily finds this out from the object reference you supply, but you |
477 | didn't supply an object reference in this case. A reference isn't an | |
478 | object reference until it has been blessed. See L<perlobj>. | |
a0d0e21e LW |
479 | |
480 | =item Can't call method "%s" without a package or object reference | |
481 | ||
482 | (F) You used the syntax of a method call, but the slot filled by the | |
be771a83 GS |
483 | object reference or package name contains an expression that returns a |
484 | defined value which is neither an object reference nor a package name. | |
72b5445b GS |
485 | Something like this will reproduce the error: |
486 | ||
487 | $BADREF = 42; | |
488 | process $BADREF 1,2,3; | |
489 | $BADREF->process(1,2,3); | |
490 | ||
a0d0e21e LW |
491 | =item Can't chdir to %s |
492 | ||
493 | (F) You called C<perl -x/foo/bar>, but C</foo/bar> is not a directory | |
494 | that you can chdir to, possibly because it doesn't exist. | |
495 | ||
0545a864 | 496 | =item Can't check filesystem of script "%s" for nosuid |
104d25b7 | 497 | |
be771a83 GS |
498 | (P) For some reason you can't check the filesystem of the script for |
499 | nosuid. | |
104d25b7 | 500 | |
6df41af2 GS |
501 | =item Can't coerce array into hash |
502 | ||
503 | (F) You used an array where a hash was expected, but the array has no | |
504 | information on how to map from keys to array indices. You can do that | |
505 | only with arrays that have a hash reference at index 0. | |
506 | ||
a0d0e21e LW |
507 | =item Can't coerce %s to integer in %s |
508 | ||
509 | (F) Certain types of SVs, in particular real symbol table entries | |
55497cff | 510 | (typeglobs), can't be forced to stop being what they are. So you can't |
a0d0e21e LW |
511 | say things like: |
512 | ||
513 | *foo += 1; | |
514 | ||
515 | You CAN say | |
516 | ||
517 | $foo = *foo; | |
518 | $foo += 1; | |
519 | ||
520 | but then $foo no longer contains a glob. | |
521 | ||
522 | =item Can't coerce %s to number in %s | |
523 | ||
524 | (F) Certain types of SVs, in particular real symbol table entries | |
55497cff | 525 | (typeglobs), can't be forced to stop being what they are. |
a0d0e21e LW |
526 | |
527 | =item Can't coerce %s to string in %s | |
528 | ||
529 | (F) Certain types of SVs, in particular real symbol table entries | |
55497cff | 530 | (typeglobs), can't be forced to stop being what they are. |
a0d0e21e LW |
531 | |
532 | =item Can't create pipe mailbox | |
533 | ||
be771a83 GS |
534 | (P) An error peculiar to VMS. The process is suffering from exhausted |
535 | quotas or other plumbing problems. | |
a0d0e21e | 536 | |
eb64745e | 537 | =item Can't declare class for non-scalar %s in "%s" |
a0d0e21e | 538 | |
eb64745e GS |
539 | (S) Currently, only scalar variables can declared with a specific class |
540 | qualifier in a "my" or "our" declaration. The semantics may be extended | |
541 | for other types of variables in future. | |
542 | ||
543 | =item Can't declare %s in "%s" | |
544 | ||
545 | (F) Only scalar, array, and hash variables may be declared as "my" or | |
546 | "our" variables. They must have ordinary identifiers as names. | |
a0d0e21e | 547 | |
6df41af2 GS |
548 | =item Can't do inplace edit: %s is not a regular file |
549 | ||
be771a83 GS |
550 | (S inplace) You tried to use the B<-i> switch on a special file, such as |
551 | a file in /dev, or a FIFO. The file was ignored. | |
6df41af2 | 552 | |
a0d0e21e LW |
553 | =item Can't do inplace edit on %s: %s |
554 | ||
be771a83 GS |
555 | (S inplace) The creation of the new file failed for the indicated |
556 | reason. | |
a0d0e21e | 557 | |
54310121 | 558 | =item Can't do inplace edit without backup |
a0d0e21e | 559 | |
be771a83 GS |
560 | (F) You're on a system such as MS-DOS that gets confused if you try |
561 | reading from a deleted (but still opened) file. You have to say | |
562 | C<-i.bak>, or some such. | |
a0d0e21e | 563 | |
10f9c03d | 564 | =item Can't do inplace edit: %s would not be unique |
a0d0e21e | 565 | |
e476b1b5 | 566 | (S inplace) Your filesystem does not support filenames longer than 14 |
10f9c03d CK |
567 | characters and Perl was unable to create a unique filename during |
568 | inplace editing with the B<-i> switch. The file was ignored. | |
a0d0e21e | 569 | |
79eeca27 | 570 | =item Can't do {n,m} with n > m before << HERE in regex m/%s/ |
a0d0e21e | 571 | |
b45f050a | 572 | (F) Minima must be less than or equal to maxima. If you really want your |
79eeca27 | 573 | regexp to match something 0 times, just put {0}. The << HERE shows in the |
b45f050a | 574 | regular expression about where the problem was discovered. See L<perlre>. |
a0d0e21e LW |
575 | |
576 | =item Can't do setegid! | |
577 | ||
be771a83 GS |
578 | (P) The setegid() call failed for some reason in the setuid emulator of |
579 | suidperl. | |
a0d0e21e LW |
580 | |
581 | =item Can't do seteuid! | |
582 | ||
583 | (P) The setuid emulator of suidperl failed for some reason. | |
584 | ||
585 | =item Can't do setuid | |
586 | ||
be771a83 GS |
587 | (F) This typically means that ordinary perl tried to exec suidperl to do |
588 | setuid emulation, but couldn't exec it. It looks for a name of the form | |
589 | sperl5.000 in the same directory that the perl executable resides under | |
590 | the name perl5.000, typically /usr/local/bin on Unix machines. If the | |
591 | file is there, check the execute permissions. If it isn't, ask your | |
592 | sysadmin why he and/or she removed it. | |
a0d0e21e LW |
593 | |
594 | =item Can't do waitpid with flags | |
595 | ||
be771a83 GS |
596 | (F) This machine doesn't have either waitpid() or wait4(), so only |
597 | waitpid() without flags is emulated. | |
a0d0e21e | 598 | |
a0d0e21e LW |
599 | =item Can't emulate -%s on #! line |
600 | ||
be771a83 GS |
601 | (F) The #! line specifies a switch that doesn't make sense at this |
602 | point. For example, it'd be kind of silly to put a B<-x> on the #! | |
603 | line. | |
a0d0e21e LW |
604 | |
605 | =item Can't exec "%s": %s | |
606 | ||
be771a83 GS |
607 | (W exec) An system(), exec(), or piped open call could not execute the |
608 | named program for the indicated reason. Typical reasons include: the | |
609 | permissions were wrong on the file, the file wasn't found in | |
610 | C<$ENV{PATH}>, the executable in question was compiled for another | |
611 | architecture, or the #! line in a script points to an interpreter that | |
612 | can't be run for similar reasons. (Or maybe your system doesn't support | |
613 | #! at all.) | |
a0d0e21e LW |
614 | |
615 | =item Can't exec %s | |
616 | ||
be771a83 GS |
617 | (F) Perl was trying to execute the indicated program for you because |
618 | that's what the #! line said. If that's not what you wanted, you may | |
619 | need to mention "perl" on the #! line somewhere. | |
a0d0e21e LW |
620 | |
621 | =item Can't execute %s | |
622 | ||
be771a83 GS |
623 | (F) You used the B<-S> switch, but the copies of the script to execute |
624 | found in the PATH did not have correct permissions. | |
2a92aaa0 | 625 | |
6df41af2 | 626 | =item Can't find an opnumber for "%s" |
2a92aaa0 | 627 | |
be771a83 GS |
628 | (F) A string of a form C<CORE::word> was given to prototype(), but there |
629 | is no builtin with the name C<word>. | |
6df41af2 GS |
630 | |
631 | =item Can't find label %s | |
632 | ||
be771a83 GS |
633 | (F) You said to goto a label that isn't mentioned anywhere that it's |
634 | possible for us to go to. See L<perlfunc/goto>. | |
2a92aaa0 GS |
635 | |
636 | =item Can't find %s on PATH | |
637 | ||
be771a83 GS |
638 | (F) You used the B<-S> switch, but the script to execute could not be |
639 | found in the PATH. | |
a0d0e21e | 640 | |
6df41af2 | 641 | =item Can't find %s on PATH, '.' not in PATH |
a0d0e21e | 642 | |
be771a83 GS |
643 | (F) You used the B<-S> switch, but the script to execute could not be |
644 | found in the PATH, or at least not with the correct permissions. The | |
645 | script exists in the current directory, but PATH prohibits running it. | |
a0d0e21e LW |
646 | |
647 | =item Can't find string terminator %s anywhere before EOF | |
648 | ||
be771a83 GS |
649 | (F) Perl strings can stretch over multiple lines. This message means |
650 | that the closing delimiter was omitted. Because bracketed quotes count | |
651 | nesting levels, the following is missing its final parenthesis: | |
a0d0e21e | 652 | |
fb73857a | 653 | print q(The character '(' starts a side comment.); |
654 | ||
be771a83 GS |
655 | If you're getting this error from a here-document, you may have included |
656 | unseen whitespace before or after your closing tag. A good programmer's | |
657 | editor will have a way to help you find these characters. | |
a0d0e21e | 658 | |
0103b764 JH |
659 | =item Can't find %s property definition %s |
660 | ||
f91328b7 JH |
661 | (F) You may have tried to use C<\p> which means a Unicode property for |
662 | example \p{Lu} is all uppercase letters. Escape the C<\p>, either | |
663 | C<\\p> (just the C<\p>) or by C<\Q\p> (the rest of the string, until | |
664 | possible C<\E>). | |
0103b764 | 665 | |
a0d0e21e LW |
666 | =item Can't fork |
667 | ||
be771a83 GS |
668 | (F) A fatal error occurred while trying to fork while opening a |
669 | pipeline. | |
a0d0e21e | 670 | |
748a9306 LW |
671 | =item Can't get filespec - stale stat buffer? |
672 | ||
be771a83 GS |
673 | (S) A warning peculiar to VMS. This arises because of the difference |
674 | between access checks under VMS and under the Unix model Perl assumes. | |
675 | Under VMS, access checks are done by filename, rather than by bits in | |
676 | the stat buffer, so that ACLs and other protections can be taken into | |
677 | account. Unfortunately, Perl assumes that the stat buffer contains all | |
678 | the necessary information, and passes it, instead of the filespec, to | |
679 | the access checking routine. It will try to retrieve the filespec using | |
680 | the device name and FID present in the stat buffer, but this works only | |
681 | if you haven't made a subsequent call to the CRTL stat() routine, | |
682 | because the device name is overwritten with each call. If this warning | |
683 | appears, the name lookup failed, and the access checking routine gave up | |
684 | and returned FALSE, just to be conservative. (Note: The access checking | |
685 | routine knows about the Perl C<stat> operator and file tests, so you | |
686 | shouldn't ever see this warning in response to a Perl command; it arises | |
687 | only if some internal code takes stat buffers lightly.) | |
748a9306 | 688 | |
a0d0e21e LW |
689 | =item Can't get pipe mailbox device name |
690 | ||
be771a83 GS |
691 | (P) An error peculiar to VMS. After creating a mailbox to act as a |
692 | pipe, Perl can't retrieve its name for later use. | |
a0d0e21e LW |
693 | |
694 | =item Can't get SYSGEN parameter value for MAXBUF | |
695 | ||
748a9306 LW |
696 | (P) An error peculiar to VMS. Perl asked $GETSYI how big you want your |
697 | mailbox buffers to be, and didn't get an answer. | |
a0d0e21e | 698 | |
6df41af2 | 699 | =item Can't "goto" into the middle of a foreach loop |
a0d0e21e | 700 | |
be771a83 GS |
701 | (F) A "goto" statement was executed to jump into the middle of a foreach |
702 | loop. You can't get there from here. See L<perlfunc/goto>. | |
6df41af2 GS |
703 | |
704 | =item Can't "goto" out of a pseudo block | |
705 | ||
be771a83 GS |
706 | (F) A "goto" statement was executed to jump out of what might look like |
707 | a block, except that it isn't a proper block. This usually occurs if | |
708 | you tried to jump out of a sort() block or subroutine, which is a no-no. | |
709 | See L<perlfunc/goto>. | |
a0d0e21e | 710 | |
b150fb22 RH |
711 | =item Can't goto subroutine from an eval-string |
712 | ||
be771a83 GS |
713 | (F) The "goto subroutine" call can't be used to jump out of an eval |
714 | "string". (You can use it to jump out of an eval {BLOCK}, but you | |
715 | probably don't want to.) | |
b150fb22 | 716 | |
6df41af2 GS |
717 | =item Can't goto subroutine outside a subroutine |
718 | ||
be771a83 GS |
719 | (F) The deeply magical "goto subroutine" call can only replace one |
720 | subroutine call for another. It can't manufacture one out of whole | |
721 | cloth. In general you should be calling it out of only an AUTOLOAD | |
722 | routine anyway. See L<perlfunc/goto>. | |
6df41af2 | 723 | |
0b5b802d GS |
724 | =item Can't ignore signal CHLD, forcing to default |
725 | ||
be771a83 GS |
726 | (W signal) Perl has detected that it is being run with the SIGCHLD |
727 | signal (sometimes known as SIGCLD) disabled. Since disabling this | |
728 | signal will interfere with proper determination of exit status of child | |
729 | processes, Perl has reset the signal to its default value. This | |
730 | situation typically indicates that the parent program under which Perl | |
731 | may be running (e.g. cron) is being very careless. | |
0b5b802d | 732 | |
6df41af2 | 733 | =item Can't "last" outside a loop block |
4633a7c4 | 734 | |
6df41af2 | 735 | (F) A "last" statement was executed to break out of the current block, |
be771a83 GS |
736 | except that there's this itty bitty problem called there isn't a current |
737 | block. Note that an "if" or "else" block doesn't count as a "loopish" | |
738 | block, as doesn't a block given to sort(), map() or grep(). You can | |
739 | usually double the curlies to get the same effect though, because the | |
740 | inner curlies will be considered a block that loops once. See | |
741 | L<perlfunc/last>. | |
4633a7c4 | 742 | |
748a9306 LW |
743 | =item Can't localize lexical variable %s |
744 | ||
2ba9eb46 | 745 | (F) You used local on a variable name that was previously declared as a |
748a9306 LW |
746 | lexical variable using "my". This is not allowed. If you want to |
747 | localize a package variable of the same name, qualify it with the | |
748 | package name. | |
749 | ||
0ebe0038 SM |
750 | =item Can't localize pseudo-hash element |
751 | ||
be771a83 GS |
752 | (F) You said something like C<< local $ar->{'key'} >>, where $ar is a |
753 | reference to a pseudo-hash. That hasn't been implemented yet, but you | |
754 | can get a similar effect by localizing the corresponding array element | |
755 | directly -- C<< local $ar->[$ar->[0]{'key'}] >>. | |
0ebe0038 | 756 | |
6df41af2 | 757 | =item Can't localize through a reference |
4727527e | 758 | |
6df41af2 GS |
759 | (F) You said something like C<local $$ref>, which Perl can't currently |
760 | handle, because when it goes to restore the old value of whatever $ref | |
be771a83 GS |
761 | pointed to after the scope of the local() is finished, it can't be sure |
762 | that $ref will still be a reference. | |
4727527e | 763 | |
ec889f3a GS |
764 | =item Can't locate %s |
765 | ||
766 | (F) You said to C<do> (or C<require>, or C<use>) a file that couldn't be | |
767 | found. Perl looks for the file in all the locations mentioned in @INC, | |
be771a83 GS |
768 | unless the file name included the full path to the file. Perhaps you |
769 | need to set the PERL5LIB or PERL5OPT environment variable to say where | |
770 | the extra library is, or maybe the script needs to add the library name | |
771 | to @INC. Or maybe you just misspelled the name of the file. See | |
772 | L<perlfunc/require> and L<lib>. | |
a0d0e21e | 773 | |
6df41af2 GS |
774 | =item Can't locate auto/%s.al in @INC |
775 | ||
be771a83 GS |
776 | (F) A function (or method) was called in a package which allows |
777 | autoload, but there is no function to autoload. Most probable causes | |
778 | are a misprint in a function/method name or a failure to C<AutoSplit> | |
779 | the file, say, by doing C<make install>. | |
6df41af2 | 780 | |
a0d0e21e LW |
781 | =item Can't locate object method "%s" via package "%s" |
782 | ||
783 | (F) You called a method correctly, and it correctly indicated a package | |
784 | functioning as a class, but that package doesn't define that particular | |
2ba9eb46 | 785 | method, nor does any of its base classes. See L<perlobj>. |
a0d0e21e | 786 | |
c1899e02 GS |
787 | =item (perhaps you forgot to load "%s"?) |
788 | ||
789 | (F) This is an educated guess made in conjunction with the message | |
790 | "Can't locate object method \"%s\" via package \"%s\"". It often means | |
791 | that a method requires a package that has not been loaded. | |
792 | ||
a0d0e21e LW |
793 | =item Can't locate package %s for @%s::ISA |
794 | ||
be771a83 GS |
795 | (W syntax) The @ISA array contained the name of another package that |
796 | doesn't seem to exist. | |
a0d0e21e | 797 | |
3e3baf6d TB |
798 | =item Can't make list assignment to \%ENV on this system |
799 | ||
be771a83 GS |
800 | (F) List assignment to %ENV is not supported on some systems, notably |
801 | VMS. | |
3e3baf6d | 802 | |
a0d0e21e LW |
803 | =item Can't modify %s in %s |
804 | ||
be771a83 GS |
805 | (F) You aren't allowed to assign to the item indicated, or otherwise try |
806 | to change it, such as with an auto-increment. | |
a0d0e21e | 807 | |
54310121 | 808 | =item Can't modify nonexistent substring |
a0d0e21e LW |
809 | |
810 | (P) The internal routine that does assignment to a substr() was handed | |
811 | a NULL. | |
812 | ||
6df41af2 GS |
813 | =item Can't modify non-lvalue subroutine call |
814 | ||
815 | (F) Subroutines meant to be used in lvalue context should be declared as | |
816 | such, see L<perlsub/"Lvalue subroutines">. | |
817 | ||
5f05dabc | 818 | =item Can't msgrcv to read-only var |
a0d0e21e | 819 | |
5f05dabc | 820 | (F) The target of a msgrcv must be modifiable to be used as a receive |
a0d0e21e LW |
821 | buffer. |
822 | ||
6df41af2 GS |
823 | =item Can't "next" outside a loop block |
824 | ||
825 | (F) A "next" statement was executed to reiterate the current block, but | |
826 | there isn't a current block. Note that an "if" or "else" block doesn't | |
be771a83 GS |
827 | count as a "loopish" block, as doesn't a block given to sort(), map() or |
828 | grep(). You can usually double the curlies to get the same effect | |
829 | though, because the inner curlies will be considered a block that loops | |
830 | once. See L<perlfunc/next>. | |
6df41af2 | 831 | |
a0d0e21e LW |
832 | =item Can't open %s: %s |
833 | ||
c47ff5f1 | 834 | (S inplace) The implicit opening of a file through use of the C<< <> >> |
08e9d68e DD |
835 | filehandle, either implicitly under the C<-n> or C<-p> command-line |
836 | switches, or explicitly, failed for the indicated reason. Usually this | |
be771a83 GS |
837 | is because you don't have read permission for a file which you named on |
838 | the command line. | |
a0d0e21e LW |
839 | |
840 | =item Can't open bidirectional pipe | |
841 | ||
be771a83 GS |
842 | (W pipe) You tried to say C<open(CMD, "|cmd|")>, which is not supported. |
843 | You can try any of several modules in the Perl library to do this, such | |
844 | as IPC::Open2. Alternately, direct the pipe's output to a file using | |
845 | ">", and then read it in under a different file handle. | |
a0d0e21e | 846 | |
748a9306 LW |
847 | =item Can't open error file %s as stderr |
848 | ||
be771a83 GS |
849 | (F) An error peculiar to VMS. Perl does its own command line |
850 | redirection, and couldn't open the file specified after '2>' or '2>>' on | |
851 | the command line for writing. | |
748a9306 LW |
852 | |
853 | =item Can't open input file %s as stdin | |
854 | ||
be771a83 GS |
855 | (F) An error peculiar to VMS. Perl does its own command line |
856 | redirection, and couldn't open the file specified after '<' on the | |
857 | command line for reading. | |
748a9306 LW |
858 | |
859 | =item Can't open output file %s as stdout | |
860 | ||
be771a83 GS |
861 | (F) An error peculiar to VMS. Perl does its own command line |
862 | redirection, and couldn't open the file specified after '>' or '>>' on | |
863 | the command line for writing. | |
748a9306 LW |
864 | |
865 | =item Can't open output pipe (name: %s) | |
866 | ||
be771a83 GS |
867 | (P) An error peculiar to VMS. Perl does its own command line |
868 | redirection, and couldn't open the pipe into which to send data destined | |
869 | for stdout. | |
748a9306 | 870 | |
a0d0e21e LW |
871 | =item Can't open perl script "%s": %s |
872 | ||
873 | (F) The script you specified can't be opened for the indicated reason. | |
874 | ||
6df41af2 GS |
875 | =item Can't read CRTL environ |
876 | ||
877 | (S) A warning peculiar to VMS. Perl tried to read an element of %ENV | |
878 | from the CRTL's internal environment array and discovered the array was | |
879 | missing. You need to figure out where your CRTL misplaced its environ | |
be771a83 GS |
880 | or define F<PERL_ENV_TABLES> (see L<perlvms>) so that environ is not |
881 | searched. | |
6df41af2 | 882 | |
7bac28a0 | 883 | =item Can't redefine active sort subroutine %s |
884 | ||
885 | (F) Perl optimizes the internal handling of sort subroutines and keeps | |
be771a83 GS |
886 | pointers into them. You tried to redefine one such sort subroutine when |
887 | it was currently active, which is not allowed. If you really want to do | |
7bac28a0 | 888 | this, you should write C<sort { &func } @x> instead of C<sort func @x>. |
889 | ||
6df41af2 GS |
890 | =item Can't "redo" outside a loop block |
891 | ||
892 | (F) A "redo" statement was executed to restart the current block, but | |
893 | there isn't a current block. Note that an "if" or "else" block doesn't | |
894 | count as a "loopish" block, as doesn't a block given to sort(), map() | |
895 | or grep(). You can usually double the curlies to get the same effect | |
896 | though, because the inner curlies will be considered a block that | |
897 | loops once. See L<perlfunc/redo>. | |
898 | ||
10f9c03d CK |
899 | =item Can't remove %s: %s, skipping file |
900 | ||
be771a83 GS |
901 | (S inplace) You requested an inplace edit without creating a backup |
902 | file. Perl was unable to remove the original file to replace it with | |
903 | the modified file. The file was left unmodified. | |
10f9c03d | 904 | |
a0d0e21e LW |
905 | =item Can't rename %s to %s: %s, skipping file |
906 | ||
e476b1b5 | 907 | (S inplace) The rename done by the B<-i> switch failed for some reason, |
10f9c03d | 908 | probably because you don't have write permission to the directory. |
a0d0e21e | 909 | |
748a9306 LW |
910 | =item Can't reopen input pipe (name: %s) in binary mode |
911 | ||
be771a83 GS |
912 | (P) An error peculiar to VMS. Perl thought stdin was a pipe, and tried |
913 | to reopen it to accept binary data. Alas, it failed. | |
748a9306 | 914 | |
6df41af2 GS |
915 | =item Can't resolve method `%s' overloading `%s' in package `%s' |
916 | ||
be771a83 GS |
917 | (F|P) Error resolving overloading specified by a method name (as opposed |
918 | to a subroutine reference): no such method callable via the package. If | |
919 | method name is C<???>, this is an internal error. | |
6df41af2 | 920 | |
a0d0e21e LW |
921 | =item Can't reswap uid and euid |
922 | ||
be771a83 GS |
923 | (P) The setreuid() call failed for some reason in the setuid emulator of |
924 | suidperl. | |
a0d0e21e | 925 | |
cd06dffe GS |
926 | =item Can't return %s from lvalue subroutine |
927 | ||
be771a83 GS |
928 | (F) Perl detected an attempt to return illegal lvalues (such as |
929 | temporary or readonly values) from a subroutine used as an lvalue. This | |
930 | is not allowed. | |
cd06dffe | 931 | |
6df41af2 GS |
932 | =item Can't return outside a subroutine |
933 | ||
934 | (F) The return statement was executed in mainline code, that is, where | |
935 | there was no subroutine call to return out of. See L<perlsub>. | |
936 | ||
a0d0e21e LW |
937 | =item Can't stat script "%s" |
938 | ||
be771a83 GS |
939 | (P) For some reason you can't fstat() the script even though you have it |
940 | open already. Bizarre. | |
a0d0e21e LW |
941 | |
942 | =item Can't swap uid and euid | |
943 | ||
be771a83 GS |
944 | (P) The setreuid() call failed for some reason in the setuid emulator of |
945 | suidperl. | |
a0d0e21e LW |
946 | |
947 | =item Can't take log of %g | |
948 | ||
fb73857a | 949 | (F) For ordinary real numbers, you can't take the logarithm of a |
950 | negative number or zero. There's a Math::Complex package that comes | |
be771a83 GS |
951 | standard with Perl, though, if you really want to do that for the |
952 | negative numbers. | |
a0d0e21e LW |
953 | |
954 | =item Can't take sqrt of %g | |
955 | ||
956 | (F) For ordinary real numbers, you can't take the square root of a | |
fb73857a | 957 | negative number. There's a Math::Complex package that comes standard |
958 | with Perl, though, if you really want to do that. | |
a0d0e21e LW |
959 | |
960 | =item Can't undef active subroutine | |
961 | ||
962 | (F) You can't undefine a routine that's currently running. You can, | |
963 | however, redefine it while it's running, and you can even undef the | |
964 | redefined subroutine while the old routine is running. Go figure. | |
965 | ||
966 | =item Can't unshift | |
967 | ||
968 | (F) You tried to unshift an "unreal" array that can't be unshifted, such | |
969 | as the main Perl stack. | |
970 | ||
971 | =item Can't upgrade that kind of scalar | |
972 | ||
be771a83 GS |
973 | (P) The internal sv_upgrade routine adds "members" to an SV, making it |
974 | into a more specialized kind of SV. The top several SV types are so | |
975 | specialized, however, that they cannot be interconverted. This message | |
976 | indicates that such a conversion was attempted. | |
a0d0e21e LW |
977 | |
978 | =item Can't upgrade to undef | |
979 | ||
be771a83 GS |
980 | (P) The undefined SV is the bottom of the totem pole, in the scheme of |
981 | upgradability. Upgrading to undef indicates an error in the code | |
982 | calling sv_upgrade. | |
a0d0e21e | 983 | |
6df41af2 GS |
984 | =item Can't use an undefined value as %s reference |
985 | ||
986 | (F) A value used as either a hard reference or a symbolic reference must | |
987 | be a defined value. This helps to delurk some insidious errors. | |
988 | ||
989 | =item Can't use bareword ("%s") as %s ref while "strict refs" in use | |
990 | ||
be771a83 GS |
991 | (F) Only hard references are allowed by "strict refs". Symbolic |
992 | references are disallowed. See L<perlref>. | |
6df41af2 | 993 | |
1d2dff63 GS |
994 | =item Can't use %%! because Errno.pm is not available |
995 | ||
996 | (F) The first time the %! hash is used, perl automatically loads the | |
997 | Errno.pm module. The Errno module is expected to tie the %! hash to | |
998 | provide symbolic names for C<$!> errno values. | |
999 | ||
6df41af2 GS |
1000 | =item Can't use %s for loop variable |
1001 | ||
be771a83 GS |
1002 | (F) Only a simple scalar variable may be used as a loop variable on a |
1003 | foreach. | |
6df41af2 GS |
1004 | |
1005 | =item Can't use global %s in "my" | |
1006 | ||
be771a83 GS |
1007 | (F) You tried to declare a magical variable as a lexical variable. This |
1008 | is not allowed, because the magic can be tied to only one location | |
1009 | (namely the global variable) and it would be incredibly confusing to | |
1010 | have variables in your program that looked like magical variables but | |
6df41af2 GS |
1011 | weren't. |
1012 | ||
c07a80fd | 1013 | =item Can't use "my %s" in sort comparison |
1014 | ||
1015 | (F) The global variables $a and $b are reserved for sort comparisons. | |
c47ff5f1 | 1016 | You mentioned $a or $b in the same line as the <=> or cmp operator, |
c07a80fd | 1017 | and the variable had earlier been declared as a lexical variable. |
1018 | Either qualify the sort variable with the package name, or rename the | |
1019 | lexical variable. | |
1020 | ||
a0d0e21e LW |
1021 | =item Can't use %s ref as %s ref |
1022 | ||
1023 | (F) You've mixed up your reference types. You have to dereference a | |
1024 | reference of the type needed. You can use the ref() function to | |
1025 | test the type of the reference, if need be. | |
1026 | ||
748a9306 | 1027 | =item Can't use string ("%s") as %s ref while "strict refs" in use |
a0d0e21e | 1028 | |
be771a83 GS |
1029 | (F) Only hard references are allowed by "strict refs". Symbolic |
1030 | references are disallowed. See L<perlref>. | |
a0d0e21e | 1031 | |
748a9306 LW |
1032 | =item Can't use subscript on %s |
1033 | ||
1034 | (F) The compiler tried to interpret a bracketed expression as a | |
1035 | subscript. But to the left of the brackets was an expression that | |
1036 | didn't look like an array reference, or anything else subscriptable. | |
1037 | ||
6df41af2 GS |
1038 | =item Can't use \%c to mean $%c in expression |
1039 | ||
75b44862 GS |
1040 | (W syntax) In an ordinary expression, backslash is a unary operator that |
1041 | creates a reference to its argument. The use of backslash to indicate a | |
1042 | backreference to a matched substring is valid only as part of a regular | |
be771a83 GS |
1043 | expression pattern. Trying to do this in ordinary Perl code produces a |
1044 | value that prints out looking like SCALAR(0xdecaf). Use the $1 form | |
1045 | instead. | |
6df41af2 | 1046 | |
810b8aa5 GS |
1047 | =item Can't weaken a nonreference |
1048 | ||
1049 | (F) You attempted to weaken something that was not a reference. Only | |
1050 | references can be weakened. | |
1051 | ||
5f05dabc | 1052 | =item Can't x= to read-only value |
a0d0e21e | 1053 | |
be771a83 GS |
1054 | (F) You tried to repeat a constant value (often the undefined value) |
1055 | with an assignment operator, which implies modifying the value itself. | |
a0d0e21e LW |
1056 | Perhaps you need to copy the value to a temporary, and repeat that. |
1057 | ||
5a211162 | 1058 | =item chmod() mode argument is missing initial 0 |
a0d0e21e | 1059 | |
e476b1b5 | 1060 | (W chmod) A novice will sometimes say |
a0d0e21e LW |
1061 | |
1062 | chmod 777, $filename | |
1063 | ||
be771a83 GS |
1064 | not realizing that 777 will be interpreted as a decimal number, |
1065 | equivalent to 01411. Octal constants are introduced with a leading 0 in | |
1066 | Perl, as in C. | |
a0d0e21e | 1067 | |
9ddeeac9 | 1068 | =item close() on unopened filehandle %s |
a0d0e21e | 1069 | |
e476b1b5 | 1070 | (W unopened) You tried to close a filehandle that was never opened. |
a0d0e21e | 1071 | |
6df41af2 GS |
1072 | =item %s: Command not found |
1073 | ||
be771a83 GS |
1074 | (A) You've accidentally run your script through B<csh> instead of Perl. |
1075 | Check the #! line, or manually feed your script into Perl yourself. | |
6df41af2 | 1076 | |
7a2e2cd6 | 1077 | =item Compilation failed in require |
1078 | ||
1079 | (F) Perl could not compile a file specified in a C<require> statement. | |
be771a83 GS |
1080 | Perl uses this generic message when none of the errors that it |
1081 | encountered were severe enough to halt compilation immediately. | |
7a2e2cd6 | 1082 | |
c3464db5 DD |
1083 | =item Complex regular subexpression recursion limit (%d) exceeded |
1084 | ||
be771a83 GS |
1085 | (W regexp) The regular expression engine uses recursion in complex |
1086 | situations where back-tracking is required. Recursion depth is limited | |
1087 | to 32766, or perhaps less in architectures where the stack cannot grow | |
1088 | arbitrarily. ("Simple" and "medium" situations are handled without | |
1089 | recursion and are not subject to a limit.) Try shortening the string | |
1090 | under examination; looping in Perl code (e.g. with C<while>) rather than | |
1091 | in the regular expression engine; or rewriting the regular expression so | |
c2e66d9e | 1092 | that it is simpler or backtracks less. (See L<perlfaq2> for information |
be771a83 | 1093 | on I<Mastering Regular Expressions>.) |
c3464db5 | 1094 | |
69282e91 | 1095 | =item connect() on closed socket %s |
a0d0e21e | 1096 | |
be771a83 GS |
1097 | (W closed) You tried to do a connect on a closed socket. Did you forget |
1098 | to check the return value of your socket() call? See | |
1099 | L<perlfunc/connect>. | |
a0d0e21e | 1100 | |
41ab332f | 1101 | =item Constant(%s)%s: %s |
6df41af2 | 1102 | |
be771a83 GS |
1103 | (F) The parser found inconsistencies either while attempting to define |
1104 | an overloaded constant, or when trying to find the character name | |
1105 | specified in the C<\N{...}> escape. Perhaps you forgot to load the | |
1106 | corresponding C<overload> or C<charnames> pragma? See L<charnames> and | |
1107 | L<overload>. | |
6df41af2 | 1108 | |
779c5bc9 GS |
1109 | =item Constant is not %s reference |
1110 | ||
1111 | (F) A constant value (perhaps declared using the C<use constant> pragma) | |
be771a83 GS |
1112 | is being dereferenced, but it amounts to the wrong type of reference. |
1113 | The message indicates the type of reference that was expected. This | |
1114 | usually indicates a syntax error in dereferencing the constant value. | |
779c5bc9 GS |
1115 | See L<perlsub/"Constant Functions"> and L<constant>. |
1116 | ||
4cee8e80 CS |
1117 | =item Constant subroutine %s redefined |
1118 | ||
be771a83 GS |
1119 | (S|W redefine) You redefined a subroutine which had previously been |
1120 | eligible for inlining. See L<perlsub/"Constant Functions"> for | |
1121 | commentary and workarounds. | |
4cee8e80 | 1122 | |
9607fc9c | 1123 | =item Constant subroutine %s undefined |
1124 | ||
be771a83 GS |
1125 | (W misc) You undefined a subroutine which had previously been eligible |
1126 | for inlining. See L<perlsub/"Constant Functions"> for commentary and | |
1127 | workarounds. | |
9607fc9c | 1128 | |
e7ea3e70 IZ |
1129 | =item Copy method did not return a reference |
1130 | ||
13a2d996 SP |
1131 | (F) The method which overloads "=" is buggy. See |
1132 | L<overload/Copy Constructor>. | |
e7ea3e70 | 1133 | |
6798c92b GS |
1134 | =item CORE::%s is not a keyword |
1135 | ||
1136 | (F) The CORE:: namespace is reserved for Perl keywords. | |
1137 | ||
a0d0e21e LW |
1138 | =item corrupted regexp pointers |
1139 | ||
1140 | (P) The regular expression engine got confused by what the regular | |
1141 | expression compiler gave it. | |
1142 | ||
1143 | =item corrupted regexp program | |
1144 | ||
be771a83 GS |
1145 | (P) The regular expression engine got passed a regexp program without a |
1146 | valid magic number. | |
a0d0e21e | 1147 | |
6df41af2 GS |
1148 | =item Corrupt malloc ptr 0x%lx at 0x%lx |
1149 | ||
1150 | (P) The malloc package that comes with Perl had an internal failure. | |
1151 | ||
1152 | =item C<-p> destination: %s | |
1153 | ||
1154 | (F) An error occurred during the implicit output invoked by the C<-p> | |
1155 | command-line switch. (This output goes to STDOUT unless you've | |
1156 | redirected it with select().) | |
1157 | ||
1158 | =item C<-T> and C<-B> not implemented on filehandles | |
1159 | ||
1160 | (F) Perl can't peek at the stdio buffer of filehandles when it doesn't | |
1161 | know about your kind of stdio. You'll have to use a filename instead. | |
1162 | ||
a0d0e21e LW |
1163 | =item Deep recursion on subroutine "%s" |
1164 | ||
be771a83 GS |
1165 | (W recursion) This subroutine has called itself (directly or indirectly) |
1166 | 100 times more than it has returned. This probably indicates an | |
1167 | infinite recursion, unless you're writing strange benchmark programs, in | |
1168 | which case it indicates something else. | |
a0d0e21e | 1169 | |
f10b0346 | 1170 | =item defined(@array) is deprecated |
69794302 | 1171 | |
be771a83 GS |
1172 | (D deprecated) defined() is not usually useful on arrays because it |
1173 | checks for an undefined I<scalar> value. If you want to see if the | |
1174 | array is empty, just use C<if (@array) { # not empty }> for example. | |
69794302 | 1175 | |
f10b0346 | 1176 | =item defined(%hash) is deprecated |
69794302 | 1177 | |
be771a83 GS |
1178 | (D deprecated) defined() is not usually useful on hashes because it |
1179 | checks for an undefined I<scalar> value. If you want to see if the hash | |
1180 | is empty, just use C<if (%hash) { # not empty }> for example. | |
69794302 | 1181 | |
fc36a67e | 1182 | =item Delimiter for here document is too long |
1183 | ||
be771a83 GS |
1184 | (F) In a here document construct like C<<<FOO>, the label C<FOO> is too |
1185 | long for Perl to handle. You have to be seriously twisted to write code | |
1186 | that triggers this error. | |
fc36a67e | 1187 | |
3cdd684c TP |
1188 | =item Did not produce a valid header |
1189 | ||
1190 | See Server error. | |
1191 | ||
6df41af2 GS |
1192 | =item %s did not return a true value |
1193 | ||
1194 | (F) A required (or used) file must return a true value to indicate that | |
1195 | it compiled correctly and ran its initialization code correctly. It's | |
1196 | traditional to end such a file with a "1;", though any true value would | |
1197 | do. See L<perlfunc/require>. | |
1198 | ||
cc507455 | 1199 | =item (Did you mean &%s instead?) |
4633a7c4 | 1200 | |
be771a83 GS |
1201 | (W) You probably referred to an imported subroutine &FOO as $FOO or some |
1202 | such. | |
4633a7c4 | 1203 | |
cc507455 | 1204 | =item (Did you mean "local" instead of "our"?) |
33633739 | 1205 | |
be771a83 GS |
1206 | (W misc) Remember that "our" does not localize the declared global |
1207 | variable. You have declared it again in the same lexical scope, which | |
1208 | seems superfluous. | |
33633739 | 1209 | |
cc507455 | 1210 | =item (Did you mean $ or @ instead of %?) |
a0d0e21e | 1211 | |
be771a83 GS |
1212 | (W) You probably said %hash{$key} when you meant $hash{$key} or |
1213 | @hash{@keys}. On the other hand, maybe you just meant %hash and got | |
1214 | carried away. | |
748a9306 | 1215 | |
7e1af8bc | 1216 | =item Died |
5f05dabc | 1217 | |
1218 | (F) You passed die() an empty string (the equivalent of C<die "">) or | |
1219 | you called it with no args and both C<$@> and C<$_> were empty. | |
1220 | ||
3cdd684c TP |
1221 | =item Document contains no data |
1222 | ||
1223 | See Server error. | |
1224 | ||
a0d0e21e LW |
1225 | =item Don't know how to handle magic of type '%s' |
1226 | ||
1227 | (P) The internal handling of magical variables has been cursed. | |
1228 | ||
1229 | =item do_study: out of memory | |
1230 | ||
1231 | (P) This should have been caught by safemalloc() instead. | |
1232 | ||
6df41af2 GS |
1233 | =item (Do you need to predeclare %s?) |
1234 | ||
1235 | (S) This is an educated guess made in conjunction with the message "%s | |
1236 | found where operator expected". It often means a subroutine or module | |
1237 | name is being referenced that hasn't been declared yet. This may be | |
1238 | because of ordering problems in your file, or because of a missing | |
be771a83 GS |
1239 | "sub", "package", "require", or "use" statement. If you're referencing |
1240 | something that isn't defined yet, you don't actually have to define the | |
1241 | subroutine or package before the current location. You can use an empty | |
1242 | "sub foo;" or "package FOO;" to enter a "forward" declaration. | |
6df41af2 | 1243 | |
a0d0e21e LW |
1244 | =item Duplicate free() ignored |
1245 | ||
be771a83 GS |
1246 | (S malloc) An internal routine called free() on something that had |
1247 | already been freed. | |
a0d0e21e | 1248 | |
4633a7c4 LW |
1249 | =item elseif should be elsif |
1250 | ||
be771a83 GS |
1251 | (S) There is no keyword "elseif" in Perl because Larry thinks it's ugly. |
1252 | Your code will be interpreted as an attempt to call a method named | |
1253 | "elseif" for the class returned by the following block. This is | |
4633a7c4 LW |
1254 | unlikely to be what you want. |
1255 | ||
85ab1d1d | 1256 | =item entering effective %s failed |
5ff3f7a4 | 1257 | |
85ab1d1d | 1258 | (F) While under the C<use filetest> pragma, switching the real and |
5ff3f7a4 GS |
1259 | effective uids or gids failed. |
1260 | ||
748a9306 LW |
1261 | =item Error converting file specification %s |
1262 | ||
5f05dabc | 1263 | (F) An error peculiar to VMS. Because Perl may have to deal with file |
748a9306 | 1264 | specifications in either VMS or Unix syntax, it converts them to a |
be771a83 GS |
1265 | single form when it must operate on them directly. Either you've passed |
1266 | an invalid file specification to Perl, or you've found a case the | |
1267 | conversion routines don't handle. Drat. | |
748a9306 | 1268 | |
e4d48cc9 GS |
1269 | =item %s: Eval-group in insecure regular expression |
1270 | ||
be771a83 GS |
1271 | (F) Perl detected tainted data when trying to compile a regular |
1272 | expression that contains the C<(?{ ... })> zero-width assertion, which | |
1273 | is unsafe. See L<perlre/(?{ code })>, and L<perlsec>. | |
e4d48cc9 | 1274 | |
e4d48cc9 GS |
1275 | =item %s: Eval-group not allowed at run time |
1276 | ||
be771a83 GS |
1277 | (F) Perl tried to compile a regular expression containing the |
1278 | C<(?{ ... })> zero-width assertion at run time, as it would when the | |
1279 | pattern contains interpolated values. Since that is a security risk, it | |
1280 | is not allowed. If you insist, you may still do this by explicitly | |
1281 | building the pattern from an interpolated string at run time and using | |
1282 | that in an eval(). See L<perlre/(?{ code })>. | |
e4d48cc9 | 1283 | |
6df41af2 GS |
1284 | =item %s: Eval-group not allowed, use re 'eval' |
1285 | ||
be771a83 GS |
1286 | (F) A regular expression contained the C<(?{ ... })> zero-width |
1287 | assertion, but that construct is only allowed when the C<use re 'eval'> | |
1288 | pragma is in effect. See L<perlre/(?{ code })>. | |
6df41af2 | 1289 | |
fc36a67e | 1290 | =item Excessively long <> operator |
1291 | ||
1292 | (F) The contents of a <> operator may not exceed the maximum size of a | |
1293 | Perl identifier. If you're just trying to glob a long list of | |
1294 | filenames, try using the glob() operator, or put the filenames into a | |
1295 | variable and glob that. | |
1296 | ||
f86702cc | 1297 | =item Execution of %s aborted due to compilation errors |
a0d0e21e LW |
1298 | |
1299 | (F) The final summary message when a Perl compilation fails. | |
1300 | ||
1301 | =item Exiting eval via %s | |
1302 | ||
be771a83 GS |
1303 | (W exiting) You are exiting an eval by unconventional means, such as a |
1304 | goto, or a loop control statement. | |
e476b1b5 GS |
1305 | |
1306 | =item Exiting format via %s | |
1307 | ||
be771a83 GS |
1308 | (W exiting) You are exiting an eval by unconventional means, such as a |
1309 | goto, or a loop control statement. | |
a0d0e21e | 1310 | |
0a753a76 | 1311 | =item Exiting pseudo-block via %s |
1312 | ||
be771a83 GS |
1313 | (W exiting) You are exiting a rather special block construct (like a |
1314 | sort block or subroutine) by unconventional means, such as a goto, or a | |
1315 | loop control statement. See L<perlfunc/sort>. | |
0a753a76 | 1316 | |
a0d0e21e LW |
1317 | =item Exiting subroutine via %s |
1318 | ||
be771a83 GS |
1319 | (W exiting) You are exiting a subroutine by unconventional means, such |
1320 | as a goto, or a loop control statement. | |
a0d0e21e LW |
1321 | |
1322 | =item Exiting substitution via %s | |
1323 | ||
be771a83 GS |
1324 | (W exiting) You are exiting a substitution by unconventional means, such |
1325 | as a return, a goto, or a loop control statement. | |
a0d0e21e | 1326 | |
7b8d334a GS |
1327 | =item Explicit blessing to '' (assuming package main) |
1328 | ||
be771a83 GS |
1329 | (W misc) You are blessing a reference to a zero length string. This has |
1330 | the effect of blessing the reference into the package main. This is | |
1331 | usually not what you want. Consider providing a default target package, | |
1332 | e.g. bless($ref, $p || 'MyPackage'); | |
7b8d334a | 1333 | |
6df41af2 GS |
1334 | =item %s: Expression syntax |
1335 | ||
be771a83 GS |
1336 | (A) You've accidentally run your script through B<csh> instead of Perl. |
1337 | Check the #! line, or manually feed your script into Perl yourself. | |
6df41af2 GS |
1338 | |
1339 | =item %s failed--call queue aborted | |
1340 | ||
1341 | (F) An untrapped exception was raised while executing a CHECK, INIT, or | |
1342 | END subroutine. Processing of the remainder of the queue of such | |
1343 | routines has been prematurely ended. | |
1344 | ||
73b437c8 JH |
1345 | =item false [] range "%s" in regexp |
1346 | ||
be771a83 GS |
1347 | (W regexp) A character class range must start and end at a literal |
1348 | character, not another character class like C<\d> or C<[:alpha:]>. The | |
1349 | "-" in your false range is interpreted as a literal "-". Consider | |
1350 | quoting the "-", "\-". See L<perlre>. | |
73b437c8 | 1351 | |
748a9306 | 1352 | =item Fatal VMS error at %s, line %d |
a0d0e21e | 1353 | |
be771a83 GS |
1354 | (P) An error peculiar to VMS. Something untoward happened in a VMS |
1355 | system service or RTL routine; Perl's exit status should provide more | |
1356 | details. The filename in "at %s" and the line number in "line %d" tell | |
1357 | you which section of the Perl source code is distressed. | |
a0d0e21e LW |
1358 | |
1359 | =item fcntl is not implemented | |
1360 | ||
1361 | (F) Your machine apparently doesn't implement fcntl(). What is this, a | |
1362 | PDP-11 or something? | |
1363 | ||
af8c498a | 1364 | =item Filehandle %s opened only for input |
a0d0e21e | 1365 | |
be771a83 GS |
1366 | (W io) You tried to write on a read-only filehandle. If you intended it |
1367 | to be a read-write filehandle, you needed to open it with "+<" or "+>" | |
1368 | or "+>>" instead of with "<" or nothing. If you intended only to write | |
1369 | the file, use ">" or ">>". See L<perlfunc/open>. | |
a0d0e21e | 1370 | |
af8c498a | 1371 | =item Filehandle %s opened only for output |
a0d0e21e | 1372 | |
be771a83 GS |
1373 | (W io) You tried to read from a filehandle opened only for writing. If |
1374 | you intended it to be a read/write filehandle, you needed to open it | |
1375 | with "+<" or "+>" or "+>>" instead of with "<" or nothing. If you | |
1376 | intended only to read from the file, use "<". See L<perlfunc/open>. | |
a0d0e21e LW |
1377 | |
1378 | =item Final $ should be \$ or $name | |
1379 | ||
1380 | (F) You must now decide whether the final $ in a string was meant to be | |
be771a83 GS |
1381 | a literal dollar sign, or was meant to introduce a variable name that |
1382 | happens to be missing. So you have to put either the backslash or the | |
1383 | name. | |
a0d0e21e LW |
1384 | |
1385 | =item Final @ should be \@ or @name | |
1386 | ||
1387 | (F) You must now decide whether the final @ in a string was meant to be | |
be771a83 GS |
1388 | a literal "at" sign, or was meant to introduce a variable name that |
1389 | happens to be missing. So you have to put either the backslash or the | |
1390 | name. | |
a0d0e21e | 1391 | |
56e90b21 GS |
1392 | =item flock() on closed filehandle %s |
1393 | ||
be771a83 | 1394 | (W closed) The filehandle you're attempting to flock() got itself closed |
c289d2f7 | 1395 | some time before now. Check your control flow. flock() operates on |
be771a83 GS |
1396 | filehandles. Are you attempting to call flock() on a dirhandle by the |
1397 | same name? | |
56e90b21 | 1398 | |
79eeca27 | 1399 | =item Quantifier follows nothing before << HERE in regex m/%s/ |
6df41af2 | 1400 | |
b45f050a | 1401 | (F) You started a regular expression with a quantifier. Backslash it if you |
79eeca27 | 1402 | meant it literally. The << HERE shows in the regular expression about where the |
b45f050a | 1403 | problem was discovered. See L<perlre>. |
6df41af2 GS |
1404 | |
1405 | =item Format not terminated | |
1406 | ||
1407 | (F) A format must be terminated by a line with a solitary dot. Perl got | |
1408 | to the end of your file without finding such a line. | |
1409 | ||
a0d0e21e LW |
1410 | =item Format %s redefined |
1411 | ||
e476b1b5 | 1412 | (W redefine) You redefined a format. To suppress this warning, say |
a0d0e21e LW |
1413 | |
1414 | { | |
4438c4b7 | 1415 | no warnings; |
a0d0e21e LW |
1416 | eval "format NAME =..."; |
1417 | } | |
1418 | ||
a0d0e21e LW |
1419 | =item Found = in conditional, should be == |
1420 | ||
e476b1b5 | 1421 | (W syntax) You said |
a0d0e21e LW |
1422 | |
1423 | if ($foo = 123) | |
1424 | ||
1425 | when you meant | |
1426 | ||
1427 | if ($foo == 123) | |
1428 | ||
1429 | (or something like that). | |
1430 | ||
6df41af2 GS |
1431 | =item %s found where operator expected |
1432 | ||
1433 | (S) The Perl lexer knows whether to expect a term or an operator. If it | |
be771a83 GS |
1434 | sees what it knows to be a term when it was expecting to see an |
1435 | operator, it gives you this warning. Usually it indicates that an | |
1436 | operator or delimiter was omitted, such as a semicolon. | |
6df41af2 | 1437 | |
a0d0e21e LW |
1438 | =item gdbm store returned %d, errno %d, key "%s" |
1439 | ||
1440 | (S) A warning from the GDBM_File extension that a store failed. | |
1441 | ||
1442 | =item gethostent not implemented | |
1443 | ||
1444 | (F) Your C library apparently doesn't implement gethostent(), probably | |
1445 | because if it did, it'd feel morally obligated to return every hostname | |
1446 | on the Internet. | |
1447 | ||
69282e91 | 1448 | =item get%sname() on closed socket %s |
a0d0e21e | 1449 | |
be771a83 GS |
1450 | (W closed) You tried to get a socket or peer socket name on a closed |
1451 | socket. Did you forget to check the return value of your socket() call? | |
a0d0e21e | 1452 | |
748a9306 LW |
1453 | =item getpwnam returned invalid UIC %#o for user "%s" |
1454 | ||
1455 | (S) A warning peculiar to VMS. The call to C<sys$getuai> underlying the | |
1456 | C<getpwnam> operator returned an invalid UIC. | |
1457 | ||
6df41af2 GS |
1458 | =item getsockopt() on closed socket %s |
1459 | ||
be771a83 GS |
1460 | (W closed) You tried to get a socket option on a closed socket. Did you |
1461 | forget to check the return value of your socket() call? See | |
6df41af2 GS |
1462 | L<perlfunc/getsockopt>. |
1463 | ||
1464 | =item Global symbol "%s" requires explicit package name | |
1465 | ||
1466 | (F) You've said "use strict vars", which indicates that all variables | |
1467 | must either be lexically scoped (using "my"), declared beforehand using | |
1468 | "our", or explicitly qualified to say which package the global variable | |
1469 | is in (using "::"). | |
1470 | ||
e476b1b5 GS |
1471 | =item glob failed (%s) |
1472 | ||
be771a83 GS |
1473 | (W glob) Something went wrong with the external program(s) used for |
1474 | C<glob> and C<< <*.c> >>. Usually, this means that you supplied a | |
1475 | C<glob> pattern that caused the external program to fail and exit with a | |
1476 | nonzero status. If the message indicates that the abnormal exit | |
1477 | resulted in a coredump, this may also mean that your csh (C shell) is | |
1478 | broken. If so, you should change all of the csh-related variables in | |
1479 | config.sh: If you have tcsh, make the variables refer to it as if it | |
1480 | were csh (e.g. C<full_csh='/usr/bin/tcsh'>); otherwise, make them all | |
1481 | empty (except that C<d_csh> should be C<'undef'>) so that Perl will | |
1482 | think csh is missing. In either case, after editing config.sh, run | |
75b44862 | 1483 | C<./Configure -S> and rebuild Perl. |
e476b1b5 | 1484 | |
a0d0e21e LW |
1485 | =item Glob not terminated |
1486 | ||
1487 | (F) The lexer saw a left angle bracket in a place where it was expecting | |
be771a83 GS |
1488 | a term, so it's looking for the corresponding right angle bracket, and |
1489 | not finding it. Chances are you left some needed parentheses out | |
1490 | earlier in the line, and you really meant a "less than". | |
a0d0e21e | 1491 | |
6df41af2 | 1492 | =item Got an error from DosAllocMem |
a0d0e21e | 1493 | |
6df41af2 GS |
1494 | (P) An error peculiar to OS/2. Most probably you're using an obsolete |
1495 | version of Perl, and this should not happen anyway. | |
a0d0e21e LW |
1496 | |
1497 | =item goto must have label | |
1498 | ||
1499 | (F) Unlike with "next" or "last", you're not allowed to goto an | |
1500 | unspecified destination. See L<perlfunc/goto>. | |
1501 | ||
6df41af2 GS |
1502 | =item %s had compilation errors |
1503 | ||
1504 | (F) The final summary message when a C<perl -c> fails. | |
1505 | ||
a0d0e21e LW |
1506 | =item Had to create %s unexpectedly |
1507 | ||
be771a83 GS |
1508 | (S internal) A routine asked for a symbol from a symbol table that ought |
1509 | to have existed already, but for some reason it didn't, and had to be | |
1510 | created on an emergency basis to prevent a core dump. | |
a0d0e21e LW |
1511 | |
1512 | =item Hash %%s missing the % in argument %d of %s() | |
1513 | ||
be771a83 GS |
1514 | (D deprecated) Really old Perl let you omit the % on hash names in some |
1515 | spots. This is now heavily deprecated. | |
a0d0e21e | 1516 | |
6df41af2 GS |
1517 | =item %s has too many errors |
1518 | ||
1519 | (F) The parser has given up trying to parse the program after 10 errors. | |
1520 | Further error messages would likely be uninformative. | |
1521 | ||
252aa082 JH |
1522 | =item Hexadecimal number > 0xffffffff non-portable |
1523 | ||
e476b1b5 | 1524 | (W portable) The hexadecimal number you specified is larger than 2**32-1 |
9e24b6e2 JH |
1525 | (4294967295) and therefore non-portable between systems. See |
1526 | L<perlport> for more on portability concerns. | |
252aa082 | 1527 | |
8903cb82 | 1528 | =item Identifier too long |
1529 | ||
1530 | (F) Perl limits identifiers (names for variables, functions, etc.) to | |
fc36a67e | 1531 | about 250 characters for simple names, and somewhat more for compound |
be771a83 GS |
1532 | names (like C<$A::B>). You've exceeded Perl's limits. Future versions |
1533 | of Perl are likely to eliminate these arbitrary limitations. | |
8903cb82 | 1534 | |
6df41af2 | 1535 | =item Illegal binary digit %s |
f675dbe5 | 1536 | |
6df41af2 | 1537 | (F) You used a digit other than 0 or 1 in a binary number. |
f675dbe5 | 1538 | |
6df41af2 | 1539 | =item Illegal binary digit %s ignored |
a0d0e21e | 1540 | |
be771a83 GS |
1541 | (W digit) You may have tried to use a digit other than 0 or 1 in a |
1542 | binary number. Interpretation of the binary number stopped before the | |
1543 | offending digit. | |
a0d0e21e | 1544 | |
4fdae800 | 1545 | =item Illegal character %s (carriage return) |
1546 | ||
d5898338 | 1547 | (F) Perl normally treats carriage returns in the program text as it |
be771a83 GS |
1548 | would any other whitespace, which means you should never see this error |
1549 | when Perl was built using standard options. For some reason, your | |
1550 | version of Perl appears to have been built without this support. Talk | |
1551 | to your Perl administrator. | |
4fdae800 | 1552 | |
a0d0e21e LW |
1553 | =item Illegal division by zero |
1554 | ||
be771a83 GS |
1555 | (F) You tried to divide a number by 0. Either something was wrong in |
1556 | your logic, or you need to put a conditional in to guard against | |
1557 | meaningless input. | |
a0d0e21e | 1558 | |
6df41af2 GS |
1559 | =item Illegal hexadecimal digit %s ignored |
1560 | ||
be771a83 GS |
1561 | (W digit) You may have tried to use a character other than 0 - 9 or |
1562 | A - F, a - f in a hexadecimal number. Interpretation of the hexadecimal | |
1563 | number stopped before the illegal character. | |
6df41af2 | 1564 | |
a0d0e21e LW |
1565 | =item Illegal modulus zero |
1566 | ||
be771a83 GS |
1567 | (F) You tried to divide a number by 0 to get the remainder. Most |
1568 | numbers don't take to this kindly. | |
a0d0e21e | 1569 | |
6df41af2 | 1570 | =item Illegal number of bits in vec |
399388f4 | 1571 | |
6df41af2 GS |
1572 | (F) The number of bits in vec() (the third argument) must be a power of |
1573 | two from 1 to 32 (or 64, if your platform supports that). | |
399388f4 GS |
1574 | |
1575 | =item Illegal octal digit %s | |
a0d0e21e LW |
1576 | |
1577 | (F) You used an 8 or 9 in a octal number. | |
1578 | ||
399388f4 | 1579 | =item Illegal octal digit %s ignored |
748a9306 | 1580 | |
75b44862 GS |
1581 | (W digit) You may have tried to use an 8 or 9 in a octal number. |
1582 | Interpretation of the octal number stopped before the 8 or 9. | |
748a9306 | 1583 | |
6df41af2 | 1584 | =item Illegal switch in PERL5OPT: %s |
6ff81951 | 1585 | |
6df41af2 GS |
1586 | (X) The PERL5OPT environment variable may only be used to set the |
1587 | following switches: B<-[DIMUdmw]>. | |
6ff81951 | 1588 | |
6df41af2 | 1589 | =item Ill-formed CRTL environ value "%s" |
81e118e0 | 1590 | |
75b44862 | 1591 | (W internal) A warning peculiar to VMS. Perl tried to read the CRTL's |
be771a83 GS |
1592 | internal environ array, and encountered an element without the C<=> |
1593 | delimiter used to separate keys from values. The element is ignored. | |
09bef843 | 1594 | |
6df41af2 | 1595 | =item Ill-formed message in prime_env_iter: |%s| |
54310121 | 1596 | |
be771a83 GS |
1597 | (W internal) A warning peculiar to VMS. Perl tried to read a logical |
1598 | name or CLI symbol definition when preparing to iterate over %ENV, and | |
1599 | didn't see the expected delimiter between key and value, so the line was | |
1600 | ignored. | |
54310121 | 1601 | |
6df41af2 | 1602 | =item (in cleanup) %s |
9607fc9c | 1603 | |
be771a83 GS |
1604 | (W misc) This prefix usually indicates that a DESTROY() method raised |
1605 | the indicated exception. Since destructors are usually called by the | |
1606 | system at arbitrary points during execution, and often a vast number of | |
1607 | times, the warning is issued only once for any number of failures that | |
1608 | would otherwise result in the same message being repeated. | |
6df41af2 | 1609 | |
be771a83 GS |
1610 | Failure of user callbacks dispatched using the C<G_KEEPERR> flag could |
1611 | also result in this warning. See L<perlcall/G_KEEPERR>. | |
9607fc9c | 1612 | |
a0d0e21e LW |
1613 | =item Insecure dependency in %s |
1614 | ||
8b1a09fc | 1615 | (F) You tried to do something that the tainting mechanism didn't like. |
be771a83 GS |
1616 | The tainting mechanism is turned on when you're running setuid or |
1617 | setgid, or when you specify B<-T> to turn it on explicitly. The | |
1618 | tainting mechanism labels all data that's derived directly or indirectly | |
1619 | from the user, who is considered to be unworthy of your trust. If any | |
1620 | such data is used in a "dangerous" operation, you get this error. See | |
1621 | L<perlsec> for more information. | |
a0d0e21e LW |
1622 | |
1623 | =item Insecure directory in %s | |
1624 | ||
be771a83 GS |
1625 | (F) You can't use system(), exec(), or a piped open in a setuid or |
1626 | setgid script if C<$ENV{PATH}> contains a directory that is writable by | |
1627 | the world. See L<perlsec>. | |
a0d0e21e | 1628 | |
62f468fc | 1629 | =item Insecure $ENV{%s} while running %s |
a0d0e21e LW |
1630 | |
1631 | (F) You can't use system(), exec(), or a piped open in a setuid or | |
62f468fc MG |
1632 | setgid script if any of C<$ENV{PATH}>, C<$ENV{IFS}>, C<$ENV{CDPATH}>, |
1633 | C<$ENV{ENV}> or C<$ENV{BASH_ENV}> are derived from data supplied (or | |
a0d0e21e LW |
1634 | potentially supplied) by the user. The script must set the path to a |
1635 | known value, using trustworthy data. See L<perlsec>. | |
1636 | ||
a7ae9550 GS |
1637 | =item Integer overflow in %s number |
1638 | ||
75b44862 | 1639 | (W overflow) The hexadecimal, octal or binary number you have specified |
be771a83 GS |
1640 | either as a literal or as an argument to hex() or oct() is too big for |
1641 | your architecture, and has been converted to a floating point number. | |
1642 | On a 32-bit architecture the largest hexadecimal, octal or binary number | |
9e24b6e2 JH |
1643 | representable without overflow is 0xFFFFFFFF, 037777777777, or |
1644 | 0b11111111111111111111111111111111 respectively. Note that Perl | |
1645 | transparently promotes all numbers to a floating point representation | |
1646 | internally--subject to loss of precision errors in subsequent | |
1647 | operations. | |
bbce6d69 | 1648 | |
79eeca27 | 1649 | =item Internal disaster before << HERE in regex m/%s/ |
6df41af2 GS |
1650 | |
1651 | (P) Something went badly wrong in the regular expression parser. | |
79eeca27 | 1652 | The << HERE shows in the regular expression about where the problem was |
b45f050a JF |
1653 | discovered. |
1654 | ||
6df41af2 | 1655 | |
748a9306 LW |
1656 | =item Internal inconsistency in tracking vforks |
1657 | ||
be771a83 GS |
1658 | (S) A warning peculiar to VMS. Perl keeps track of the number of times |
1659 | you've called C<fork> and C<exec>, to determine whether the current call | |
1660 | to C<exec> should affect the current script or a subprocess (see | |
1661 | L<perlvms/"exec LIST">). Somehow, this count has become scrambled, so | |
1662 | Perl is making a guess and treating this C<exec> as a request to | |
1663 | terminate the Perl script and execute the specified command. | |
748a9306 | 1664 | |
79eeca27 | 1665 | =item Internal urp before << HERE in regex m/%s/ |
b45f050a | 1666 | |
79eeca27 | 1667 | (P) Something went badly awry in the regular expression parser. The <<<HERE |
b45f050a | 1668 | shows in the regular expression about where the problem was discovered. |
a0d0e21e | 1669 | |
a0d0e21e | 1670 | |
6df41af2 GS |
1671 | =item %s (...) interpreted as function |
1672 | ||
75b44862 | 1673 | (W syntax) You've run afoul of the rule that says that any list operator |
be771a83 | 1674 | followed by parentheses turns into a function, with all the list |
13a2d996 SP |
1675 | operators arguments found inside the parentheses. See |
1676 | L<perlop/Terms and List Operators (Leftward)>. | |
6df41af2 | 1677 | |
09bef843 SB |
1678 | =item Invalid %s attribute: %s |
1679 | ||
1680 | The indicated attribute for a subroutine or variable was not recognized | |
1681 | by Perl or by a user-supplied handler. See L<attributes>. | |
1682 | ||
1683 | =item Invalid %s attributes: %s | |
1684 | ||
be771a83 GS |
1685 | The indicated attributes for a subroutine or variable were not |
1686 | recognized by Perl or by a user-supplied handler. See L<attributes>. | |
09bef843 | 1687 | |
c635e13b | 1688 | =item Invalid conversion in %s: "%s" |
1689 | ||
be771a83 GS |
1690 | (W printf) Perl does not understand the given format conversion. See |
1691 | L<perlfunc/sprintf>. | |
c635e13b | 1692 | |
6df41af2 GS |
1693 | =item invalid [] range "%s" in regexp |
1694 | ||
1695 | (F) The range specified in a character class had a minimum character | |
1696 | greater than the maximum character. See L<perlre>. | |
1697 | ||
c2e66d9e GS |
1698 | =item invalid [] range "%s" in transliteration operator |
1699 | ||
1700 | (F) The range specified in the tr/// or y/// operator had a minimum | |
1701 | character greater than the maximum character. See L<perlop>. | |
1702 | ||
09bef843 SB |
1703 | =item Invalid separator character %s in attribute list |
1704 | ||
0120eecf | 1705 | (F) Something other than a colon or whitespace was seen between the |
be771a83 GS |
1706 | elements of an attribute list. If the previous attribute had a |
1707 | parenthesised parameter list, perhaps that list was terminated too soon. | |
1708 | See L<attributes>. | |
09bef843 | 1709 | |
96e4d5b1 | 1710 | =item Invalid type in pack: '%s' |
1711 | ||
8903cb82 | 1712 | (F) The given character is not a valid pack type. See L<perlfunc/pack>. |
be771a83 GS |
1713 | (W pack) The given character is not a valid pack type but used to be |
1714 | silently ignored. | |
96e4d5b1 | 1715 | |
1716 | =item Invalid type in unpack: '%s' | |
1717 | ||
be771a83 GS |
1718 | (F) The given character is not a valid unpack type. See |
1719 | L<perlfunc/unpack>. | |
75b44862 GS |
1720 | (W unpack) The given character is not a valid unpack type but used to be |
1721 | silently ignored. | |
96e4d5b1 | 1722 | |
a0d0e21e LW |
1723 | =item ioctl is not implemented |
1724 | ||
1725 | (F) Your machine apparently doesn't implement ioctl(), which is pretty | |
1726 | strange for a machine that supports C. | |
1727 | ||
c289d2f7 JH |
1728 | =item ioctl() on unopened %s |
1729 | ||
1730 | (W unopened) You tried ioctl() on a filehandle that was never opened. | |
1731 | Check you control flow and number of arguments. | |
1732 | ||
6ad11d81 JH |
1733 | =item `%s' is not a code reference |
1734 | ||
1735 | (W) The second (fourth, sixth, ...) argument of overload::constant needs | |
1736 | to be a code reference. Either an anonymous subroutine, or a reference | |
1737 | to a subroutine. | |
1738 | ||
1739 | =item `%s' is not an overloadable type | |
1740 | ||
1741 | (W) You tried to overload a constant type the overload package is unaware of. | |
1742 | ||
a0d0e21e LW |
1743 | =item junk on end of regexp |
1744 | ||
1745 | (P) The regular expression parser is confused. | |
1746 | ||
1747 | =item Label not found for "last %s" | |
1748 | ||
be771a83 GS |
1749 | (F) You named a loop to break out of, but you're not currently in a loop |
1750 | of that name, not even if you count where you were called from. See | |
1751 | L<perlfunc/last>. | |
a0d0e21e LW |
1752 | |
1753 | =item Label not found for "next %s" | |
1754 | ||
1755 | (F) You named a loop to continue, but you're not currently in a loop of | |
1756 | that name, not even if you count where you were called from. See | |
1757 | L<perlfunc/last>. | |
1758 | ||
1759 | =item Label not found for "redo %s" | |
1760 | ||
1761 | (F) You named a loop to restart, but you're not currently in a loop of | |
1762 | that name, not even if you count where you were called from. See | |
1763 | L<perlfunc/last>. | |
1764 | ||
85ab1d1d | 1765 | =item leaving effective %s failed |
5ff3f7a4 | 1766 | |
85ab1d1d | 1767 | (F) While under the C<use filetest> pragma, switching the real and |
5ff3f7a4 GS |
1768 | effective uids or gids failed. |
1769 | ||
69282e91 | 1770 | =item listen() on closed socket %s |
a0d0e21e | 1771 | |
be771a83 GS |
1772 | (W closed) You tried to do a listen on a closed socket. Did you forget |
1773 | to check the return value of your socket() call? See | |
1774 | L<perlfunc/listen>. | |
a0d0e21e | 1775 | |
9d837945 TM |
1776 | =item lstat() on filehandle %s |
1777 | ||
1778 | (W io) You tried to do a lstat on a filehandle. What did you mean | |
1779 | by that? lstat() makes sense only on filenames. (Perl did a fstat() | |
1780 | instead on the filehandle.) | |
1781 | ||
cd06dffe GS |
1782 | =item Lvalue subs returning %s not implemented yet |
1783 | ||
1784 | (F) Due to limitations in the current implementation, array and hash | |
be771a83 GS |
1785 | values cannot be returned in subroutines used in lvalue context. See |
1786 | L<perlsub/"Lvalue subroutines">. | |
cd06dffe | 1787 | |
551e1d92 | 1788 | =item Lookbehind longer than %d not implemented before << HERE %s |
b45f050a JF |
1789 | |
1790 | (F) There is currently a limit on the length of string which lookbehind can | |
79eeca27 | 1791 | handle. This restriction may be eased in a future release. The << HERE shows in |
b45f050a | 1792 | the regular expression about where the problem was discovered. |
2e50fd82 | 1793 | |
6df41af2 GS |
1794 | =item Malformed PERLLIB_PREFIX |
1795 | ||
1796 | (F) An error peculiar to OS/2. PERLLIB_PREFIX should be of the form | |
1797 | ||
1798 | prefix1;prefix2 | |
1799 | ||
1800 | or | |
1801 | ||
1802 | prefix1 prefix2 | |
1803 | ||
be771a83 GS |
1804 | with nonempty prefix1 and prefix2. If C<prefix1> is indeed a prefix of |
1805 | a builtin library search path, prefix2 is substituted. The error may | |
1806 | appear if components are not found, or are too long. See | |
fecfaeb8 | 1807 | "PERLLIB_PREFIX" in L<perlos2>. |
6df41af2 | 1808 | |
ba210ebe JH |
1809 | =item Malformed UTF-8 character (%s) |
1810 | ||
1811 | Perl detected something that didn't comply with UTF-8 encoding rules. | |
1812 | ||
dea0fc0b JH |
1813 | =item Malformed UTF-16 surrogate |
1814 | ||
1815 | Perl thought it was reading UTF-16 encoded character data but while | |
1816 | doing it Perl met a malformed Unicode surrogate. | |
1817 | ||
6df41af2 GS |
1818 | =item %s matches null string many times |
1819 | ||
1820 | (W regexp) The pattern you've specified would be an infinite loop if the | |
be771a83 GS |
1821 | regular expression engine didn't specifically check for that. See |
1822 | L<perlre>. | |
6df41af2 GS |
1823 | |
1824 | =item % may only be used in unpack | |
1825 | ||
1826 | (F) You can't pack a string by supplying a checksum, because the | |
be771a83 GS |
1827 | checksumming process loses information, and you can't go the other way. |
1828 | See L<perlfunc/unpack>. | |
6df41af2 | 1829 | |
a0d0e21e LW |
1830 | =item Method for operation %s not found in package %s during blessing |
1831 | ||
1832 | (F) An attempt was made to specify an entry in an overloading table that | |
e7ea3e70 | 1833 | doesn't resolve to a valid subroutine. See L<overload>. |
a0d0e21e | 1834 | |
3cdd684c TP |
1835 | =item Method %s not permitted |
1836 | ||
1837 | See Server error. | |
1838 | ||
a0d0e21e LW |
1839 | =item Might be a runaway multi-line %s string starting on line %d |
1840 | ||
1841 | (S) An advisory indicating that the previous error may have been caused | |
1842 | by a missing delimiter on a string or pattern, because it eventually | |
1843 | ended earlier on the current line. | |
1844 | ||
1845 | =item Misplaced _ in number | |
1846 | ||
e476b1b5 | 1847 | (W syntax) An underline in a decimal constant wasn't on a 3-digit boundary. |
a0d0e21e | 1848 | |
4a2d328f | 1849 | =item Missing %sbrace%s on \N{} |
423cee85 | 1850 | |
4a2d328f | 1851 | (F) Wrong syntax of character name literal C<\N{charname}> within |
423cee85 JH |
1852 | double-quotish context. |
1853 | ||
a0d0e21e LW |
1854 | =item Missing comma after first argument to %s function |
1855 | ||
1856 | (F) While certain functions allow you to specify a filehandle or an | |
1857 | "indirect object" before the argument list, this ain't one of them. | |
1858 | ||
06eaf0bc GS |
1859 | =item Missing command in piped open |
1860 | ||
be771a83 GS |
1861 | (W pipe) You used the C<open(FH, "| command")> or |
1862 | C<open(FH, "command |")> construction, but the command was missing or | |
1863 | blank. | |
06eaf0bc | 1864 | |
6df41af2 GS |
1865 | =item Missing name in "my sub" |
1866 | ||
be771a83 GS |
1867 | (F) The reserved syntax for lexically scoped subroutines requires that |
1868 | they have a name with which they can be found. | |
6df41af2 GS |
1869 | |
1870 | =item Missing $ on loop variable | |
1871 | ||
be771a83 GS |
1872 | (F) Apparently you've been programming in B<csh> too much. Variables |
1873 | are always mentioned with the $ in Perl, unlike in the shells, where it | |
1874 | can vary from one line to the next. | |
6df41af2 | 1875 | |
cc507455 | 1876 | =item (Missing operator before %s?) |
748a9306 LW |
1877 | |
1878 | (S) This is an educated guess made in conjunction with the message "%s | |
1879 | found where operator expected". Often the missing operator is a comma. | |
1880 | ||
d98d5fff | 1881 | =item Missing right curly or square bracket |
a0d0e21e | 1882 | |
be771a83 GS |
1883 | (F) The lexer counted more opening curly or square brackets than closing |
1884 | ones. As a general rule, you'll find it's missing near the place you | |
1885 | were last editing. | |
a0d0e21e | 1886 | |
6df41af2 GS |
1887 | =item (Missing semicolon on previous line?) |
1888 | ||
1889 | (S) This is an educated guess made in conjunction with the message "%s | |
1890 | found where operator expected". Don't automatically put a semicolon on | |
1891 | the previous line just because you saw this message. | |
1892 | ||
a0d0e21e LW |
1893 | =item Modification of a read-only value attempted |
1894 | ||
1895 | (F) You tried, directly or indirectly, to change the value of a | |
5f05dabc | 1896 | constant. You didn't, of course, try "2 = 1", because the compiler |
a0d0e21e LW |
1897 | catches that. But an easy way to do the same thing is: |
1898 | ||
1899 | sub mod { $_[0] = 1 } | |
1900 | mod(2); | |
1901 | ||
1902 | Another way is to assign to a substr() that's off the end of the string. | |
1903 | ||
c5674021 |
1904 | Yet another way is to assign to a C<foreach> loop I<VAR> when I<VAR> |
1905 | is aliased to a constant in the look I<LIST>: | |
1906 | ||
1907 | $x = 1; | |
1908 | foreach my $n ($x, 2) { | |
1909 | $n *= 2; # modifies the $x, but fails on attempt to modify the 2 | |
1910 | } | |
1911 | ||
7a4340ed | 1912 | =item Modification of non-creatable array value attempted, %s |
a0d0e21e LW |
1913 | |
1914 | (F) You tried to make an array value spring into existence, and the | |
1915 | subscript was probably negative, even counting from end of the array | |
1916 | backwards. | |
1917 | ||
7a4340ed | 1918 | =item Modification of non-creatable hash value attempted, %s |
a0d0e21e | 1919 | |
be771a83 GS |
1920 | (P) You tried to make a hash value spring into existence, and it |
1921 | couldn't be created for some peculiar reason. | |
a0d0e21e LW |
1922 | |
1923 | =item Module name must be constant | |
1924 | ||
1925 | (F) Only a bare module name is allowed as the first argument to a "use". | |
1926 | ||
be98fb35 | 1927 | =item Module name required with -%c option |
6df41af2 | 1928 | |
be98fb35 GS |
1929 | (F) The C<-M> or C<-m> options say that Perl should load some module, but |
1930 | you omitted the name of the module. Consult L<perlrun> for full details | |
1931 | about C<-M> and C<-m>. | |
6df41af2 | 1932 | |
a0d0e21e LW |
1933 | =item msg%s not implemented |
1934 | ||
1935 | (F) You don't have System V message IPC on your system. | |
1936 | ||
1937 | =item Multidimensional syntax %s not supported | |
1938 | ||
75b44862 GS |
1939 | (W syntax) Multidimensional arrays aren't written like C<$foo[1,2,3]>. |
1940 | They're written like C<$foo[1][2][3]>, as in C. | |
8b1a09fc | 1941 | |
6df41af2 | 1942 | =item / must be followed by a*, A* or Z* |
09bef843 | 1943 | |
6df41af2 | 1944 | (F) You had a pack template indicating a counted-length string, |
be771a83 GS |
1945 | Currently the only things that can have their length counted are a*, A* |
1946 | or Z*. See L<perlfunc/pack>. | |
6df41af2 GS |
1947 | |
1948 | =item / must be followed by a, A or Z | |
1949 | ||
be771a83 GS |
1950 | (F) You had an unpack template indicating a counted-length string, which |
1951 | must be followed by one of the letters a, A or Z to indicate what sort | |
1952 | of string is to be unpacked. See L<perlfunc/pack>. | |
6df41af2 GS |
1953 | |
1954 | =item / must follow a numeric type | |
1955 | ||
be771a83 GS |
1956 | (F) You had an unpack template that contained a '#', but this did not |
1957 | follow some numeric unpack specification. See L<perlfunc/pack>. | |
6df41af2 GS |
1958 | |
1959 | =item "my sub" not yet implemented | |
1960 | ||
be771a83 GS |
1961 | (F) Lexically scoped subroutines are not yet implemented. Don't try |
1962 | that yet. | |
6df41af2 GS |
1963 | |
1964 | =item "my" variable %s can't be in a package | |
1965 | ||
be771a83 GS |
1966 | (F) Lexically scoped variables aren't in a package, so it doesn't make |
1967 | sense to try to declare one with a package qualifier on the front. Use | |
1968 | local() if you want to localize a package variable. | |
09bef843 | 1969 | |
8b1a09fc | 1970 | =item Name "%s::%s" used only once: possible typo |
1971 | ||
e476b1b5 | 1972 | (W once) Typographical errors often show up as unique variable names. |
be771a83 GS |
1973 | If you had a good reason for having a unique name, then just mention it |
1974 | again somehow to suppress the message. The C<our> declaration is | |
77ca0c92 | 1975 | provided for this purpose. |
a0d0e21e LW |
1976 | |
1977 | =item Negative length | |
1978 | ||
be771a83 GS |
1979 | (F) You tried to do a read/write/send/recv operation with a buffer |
1980 | length that is less than 0. This is difficult to imagine. | |
a0d0e21e | 1981 | |
79eeca27 | 1982 | =item Nested quantifiers before << HERE in regex m/%s/ |
a0d0e21e | 1983 | |
b45f050a | 1984 | (F) You can't quantify a quantifier without intervening parentheses. So |
79eeca27 | 1985 | things like ** or +* or ?* are illegal. The << HERE shows in the regular |
b45f050a | 1986 | expression about where the problem was discovered. |
a0d0e21e | 1987 | |
be771a83 GS |
1988 | Note, however, that the minimal matching quantifiers, C<*?>, C<+?>, and |
1989 | C<??> appear to be nested quantifiers, but aren't. See L<perlre>. | |
a0d0e21e | 1990 | |
b45f050a | 1991 | |
6df41af2 | 1992 | =item %s never introduced |
a0d0e21e | 1993 | |
be771a83 GS |
1994 | (S internal) The symbol in question was declared but somehow went out of |
1995 | scope before it could possibly have been used. | |
a0d0e21e LW |
1996 | |
1997 | =item No %s allowed while running setuid | |
1998 | ||
be771a83 GS |
1999 | (F) Certain operations are deemed to be too insecure for a setuid or |
2000 | setgid script to even be allowed to attempt. Generally speaking there | |
2001 | will be another way to do what you want that is, if not secure, at least | |
2002 | securable. See L<perlsec>. | |
a0d0e21e LW |
2003 | |
2004 | =item No B<-e> allowed in setuid scripts | |
2005 | ||
2006 | (F) A setuid script can't be specified by the user. | |
2007 | ||
2008 | =item No comma allowed after %s | |
2009 | ||
2010 | (F) A list operator that has a filehandle or "indirect object" is not | |
2011 | allowed to have a comma between that and the following arguments. | |
2012 | Otherwise it'd be just another one of the arguments. | |
2013 | ||
0a753a76 | 2014 | One possible cause for this is that you expected to have imported a |
2015 | constant to your name space with B<use> or B<import> while no such | |
2016 | importing took place, it may for example be that your operating system | |
2017 | does not support that particular constant. Hopefully you did use an | |
2018 | explicit import list for the constants you expect to see, please see | |
2019 | L<perlfunc/use> and L<perlfunc/import>. While an explicit import list | |
2020 | would probably have caught this error earlier it naturally does not | |
2021 | remedy the fact that your operating system still does not support that | |
2022 | constant. Maybe you have a typo in the constants of the symbol import | |
2023 | list of B<use> or B<import> or in the constant name at the line where | |
2024 | this error was triggered? | |
2025 | ||
748a9306 LW |
2026 | =item No command into which to pipe on command line |
2027 | ||
be771a83 GS |
2028 | (F) An error peculiar to VMS. Perl handles its own command line |
2029 | redirection, and found a '|' at the end of the command line, so it | |
2030 | doesn't know where you want to pipe the output from this command. | |
748a9306 | 2031 | |
a0d0e21e LW |
2032 | =item No DB::DB routine defined |
2033 | ||
be771a83 GS |
2034 | (F) The currently executing code was compiled with the B<-d> switch, but |
2035 | for some reason the perl5db.pl file (or some facsimile thereof) didn't | |
2036 | define a routine to be called at the beginning of each statement. Which | |
2037 | is odd, because the file should have been required automatically, and | |
2038 | should have blown up the require if it didn't parse right. | |
a0d0e21e LW |
2039 | |
2040 | =item No dbm on this machine | |
2041 | ||
2042 | (P) This is counted as an internal error, because every machine should | |
5f05dabc | 2043 | supply dbm nowadays, because Perl comes with SDBM. See L<SDBM_File>. |
a0d0e21e LW |
2044 | |
2045 | =item No DBsub routine | |
2046 | ||
2047 | (F) The currently executing code was compiled with the B<-d> switch, | |
2048 | but for some reason the perl5db.pl file (or some facsimile thereof) | |
2049 | didn't define a DB::sub routine to be called at the beginning of each | |
2050 | ordinary subroutine call. | |
2051 | ||
c47ff5f1 | 2052 | =item No error file after 2> or 2>> on command line |
748a9306 | 2053 | |
be771a83 GS |
2054 | (F) An error peculiar to VMS. Perl handles its own command line |
2055 | redirection, and found a '2>' or a '2>>' on the command line, but can't | |
2056 | find the name of the file to which to write data destined for stderr. | |
748a9306 | 2057 | |
c47ff5f1 | 2058 | =item No input file after < on command line |
748a9306 | 2059 | |
be771a83 GS |
2060 | (F) An error peculiar to VMS. Perl handles its own command line |
2061 | redirection, and found a '<' on the command line, but can't find the | |
2062 | name of the file from which to read data for stdin. | |
748a9306 | 2063 | |
6df41af2 GS |
2064 | =item No #! line |
2065 | ||
2066 | (F) The setuid emulator requires that scripts have a well-formed #! line | |
2067 | even on machines that don't support the #! construct. | |
2068 | ||
2069 | =item "no" not allowed in expression | |
2070 | ||
be771a83 GS |
2071 | (F) The "no" keyword is recognized and executed at compile time, and |
2072 | returns no useful value. See L<perlmod>. | |
6df41af2 | 2073 | |
c47ff5f1 | 2074 | =item No output file after > on command line |
748a9306 | 2075 | |
be771a83 GS |
2076 | (F) An error peculiar to VMS. Perl handles its own command line |
2077 | redirection, and found a lone '>' at the end of the command line, so it | |
2078 | doesn't know where you wanted to redirect stdout. | |
748a9306 | 2079 | |
c47ff5f1 | 2080 | =item No output file after > or >> on command line |
748a9306 | 2081 | |
be771a83 GS |
2082 | (F) An error peculiar to VMS. Perl handles its own command line |
2083 | redirection, and found a '>' or a '>>' on the command line, but can't | |
2084 | find the name of the file to which to write data destined for stdout. | |
748a9306 | 2085 | |
1ec3e8de GS |
2086 | =item No package name allowed for variable %s in "our" |
2087 | ||
be771a83 GS |
2088 | (F) Fully qualified variable names are not allowed in "our" |
2089 | declarations, because that doesn't make much sense under existing | |
2090 | semantics. Such syntax is reserved for future extensions. | |
1ec3e8de | 2091 | |
a0d0e21e LW |
2092 | =item No Perl script found in input |
2093 | ||
2094 | (F) You called C<perl -x>, but no line was found in the file beginning | |
2095 | with #! and containing the word "perl". | |
2096 | ||
2097 | =item No setregid available | |
2098 | ||
2099 | (F) Configure didn't find anything resembling the setregid() call for | |
2100 | your system. | |
2101 | ||
2102 | =item No setreuid available | |
2103 | ||
2104 | (F) Configure didn't find anything resembling the setreuid() call for | |
2105 | your system. | |
2106 | ||
a67e862a | 2107 | =item No space allowed after -%c |
a0d0e21e | 2108 | |
be771a83 GS |
2109 | (F) The argument to the indicated command line switch must follow |
2110 | immediately after the switch, without intervening spaces. | |
a0d0e21e | 2111 | |
6df41af2 GS |
2112 | =item No %s specified for -%c |
2113 | ||
2114 | (F) The indicated command line switch needs a mandatory argument, but | |
2115 | you haven't specified one. | |
2116 | ||
2117 | =item No such pipe open | |
2118 | ||
2119 | (P) An error peculiar to VMS. The internal routine my_pclose() tried to | |
be771a83 GS |
2120 | close a pipe which hadn't been opened. This should have been caught |
2121 | earlier as an attempt to close an unopened filehandle. | |
6df41af2 | 2122 | |
88e9b055 | 2123 | =item No such pseudo-hash field "%s" |
57079c46 | 2124 | |
88e9b055 | 2125 | (F) You tried to access an array as a hash, but the field name used is |
57079c46 GA |
2126 | not defined. The hash at index 0 should map all valid field names to |
2127 | array indices for that to work. | |
2128 | ||
88e9b055 | 2129 | =item No such pseudo-hash field "%s" in variable %s of type %s |
f1192cee | 2130 | |
be771a83 GS |
2131 | (F) You tried to access a field of a typed variable where the type does |
2132 | not know about the field name. The field names are looked up in the | |
2133 | %FIELDS hash in the type package at compile time. The %FIELDS hash is | |
2134 | %usually set up with the 'fields' pragma. | |
f1192cee | 2135 | |
a0d0e21e LW |
2136 | =item No such signal: SIG%s |
2137 | ||
be771a83 GS |
2138 | (W signal) You specified a signal name as a subscript to %SIG that was |
2139 | not recognized. Say C<kill -l> in your shell to see the valid signal | |
2140 | names on your system. | |
a0d0e21e LW |
2141 | |
2142 | =item Not a CODE reference | |
2143 | ||
2144 | (F) Perl was trying to evaluate a reference to a code value (that is, a | |
2145 | subroutine), but found a reference to something else instead. You can | |
be771a83 GS |
2146 | use the ref() function to find out what kind of ref it really was. See |
2147 | also L<perlref>. | |
a0d0e21e LW |
2148 | |
2149 | =item Not a format reference | |
2150 | ||
2151 | (F) I'm not sure how you managed to generate a reference to an anonymous | |
2152 | format, but this indicates you did, and that it didn't exist. | |
2153 | ||
2154 | =item Not a GLOB reference | |
2155 | ||
be771a83 GS |
2156 | (F) Perl was trying to evaluate a reference to a "typeglob" (that is, a |
2157 | symbol table entry that looks like C<*foo>), but found a reference to | |
2158 | something else instead. You can use the ref() function to find out what | |
2159 | kind of ref it really was. See L<perlref>. | |
a0d0e21e LW |
2160 | |
2161 | =item Not a HASH reference | |
2162 | ||
be771a83 GS |
2163 | (F) Perl was trying to evaluate a reference to a hash value, but found a |
2164 | reference to something else instead. You can use the ref() function to | |
2165 | find out what kind of ref it really was. See L<perlref>. | |
a0d0e21e | 2166 | |
6df41af2 GS |
2167 | =item Not an ARRAY reference |
2168 | ||
be771a83 GS |
2169 | (F) Perl was trying to evaluate a reference to an array value, but found |
2170 | a reference to something else instead. You can use the ref() function | |
2171 | to find out what kind of ref it really was. See L<perlref>. | |
6df41af2 | 2172 | |
a0d0e21e LW |
2173 | =item Not a perl script |
2174 | ||
2175 | (F) The setuid emulator requires that scripts have a well-formed #! line | |
2176 | even on machines that don't support the #! construct. The line must | |
2177 | mention perl. | |
2178 | ||
2179 | =item Not a SCALAR reference | |
2180 | ||
be771a83 GS |
2181 | (F) Perl was trying to evaluate a reference to a scalar value, but found |
2182 | a reference to something else instead. You can use the ref() function | |
2183 | to find out what kind of ref it really was. See L<perlref>. | |
a0d0e21e LW |
2184 | |
2185 | =item Not a subroutine reference | |
2186 | ||
2187 | (F) Perl was trying to evaluate a reference to a code value (that is, a | |
2188 | subroutine), but found a reference to something else instead. You can | |
be771a83 GS |
2189 | use the ref() function to find out what kind of ref it really was. See |
2190 | also L<perlref>. | |
a0d0e21e | 2191 | |
e7ea3e70 | 2192 | =item Not a subroutine reference in overload table |
a0d0e21e LW |
2193 | |
2194 | (F) An attempt was made to specify an entry in an overloading table that | |
8b1a09fc | 2195 | doesn't somehow point to a valid subroutine. See L<overload>. |
a0d0e21e | 2196 | |
a0d0e21e LW |
2197 | =item Not enough arguments for %s |
2198 | ||
2199 | (F) The function requires more arguments than you specified. | |
2200 | ||
6df41af2 GS |
2201 | =item Not enough format arguments |
2202 | ||
be771a83 GS |
2203 | (W syntax) A format specified more picture fields than the next line |
2204 | supplied. See L<perlform>. | |
6df41af2 GS |
2205 | |
2206 | =item %s: not found | |
2207 | ||
be771a83 GS |
2208 | (A) You've accidentally run your script through the Bourne shell instead |
2209 | of Perl. Check the #! line, or manually feed your script into Perl | |
2210 | yourself. | |
6df41af2 GS |
2211 | |
2212 | =item no UTC offset information; assuming local time is UTC | |
a0d0e21e | 2213 | |
6df41af2 GS |
2214 | (S) A warning peculiar to VMS. Perl was unable to find the local |
2215 | timezone offset, so it's assuming that local system time is equivalent | |
be771a83 GS |
2216 | to UTC. If it's not, define the logical name |
2217 | F<SYS$TIMEZONE_DIFFERENTIAL> to translate to the number of seconds which | |
2218 | need to be added to UTC to get local time. | |
a0d0e21e LW |
2219 | |
2220 | =item Null filename used | |
2221 | ||
be771a83 GS |
2222 | (F) You can't require the null filename, especially because on many |
2223 | machines that means the current directory! See L<perlfunc/require>. | |
a0d0e21e | 2224 | |
6df41af2 GS |
2225 | =item NULL OP IN RUN |
2226 | ||
be771a83 GS |
2227 | (P debugging) Some internal routine called run() with a null opcode |
2228 | pointer. | |
6df41af2 | 2229 | |
55497cff | 2230 | =item Null picture in formline |
2231 | ||
2232 | (F) The first argument to formline must be a valid format picture | |
2233 | specification. It was found to be empty, which probably means you | |
2234 | supplied it an uninitialized value. See L<perlform>. | |
2235 | ||
a0d0e21e LW |
2236 | =item Null realloc |
2237 | ||
2238 | (P) An attempt was made to realloc NULL. | |
2239 | ||
2240 | =item NULL regexp argument | |
2241 | ||
5f05dabc | 2242 | (P) The internal pattern matching routines blew it big time. |
a0d0e21e LW |
2243 | |
2244 | =item NULL regexp parameter | |
2245 | ||
2246 | (P) The internal pattern matching routines are out of their gourd. | |
2247 | ||
fc36a67e | 2248 | =item Number too long |
2249 | ||
be771a83 GS |
2250 | (F) Perl limits the representation of decimal numbers in programs to |
2251 | about about 250 characters. You've exceeded that length. Future | |
2252 | versions of Perl are likely to eliminate this arbitrary limitation. In | |
2253 | the meantime, try using scientific notation (e.g. "1e6" instead of | |
2254 | "1_000_000"). | |
fc36a67e | 2255 | |
6df41af2 GS |
2256 | =item Octal number in vector unsupported |
2257 | ||
be771a83 GS |
2258 | (F) Numbers with a leading C<0> are not currently allowed in vectors. |
2259 | The octal number interpretation of such numbers may be supported in a | |
2260 | future version. | |
6df41af2 | 2261 | |
252aa082 JH |
2262 | =item Octal number > 037777777777 non-portable |
2263 | ||
75b44862 | 2264 | (W portable) The octal number you specified is larger than 2**32-1 |
be771a83 GS |
2265 | (4294967295) and therefore non-portable between systems. See |
2266 | L<perlport> for more on portability concerns. | |
252aa082 JH |
2267 | |
2268 | See also L<perlport> for writing portable code. | |
2269 | ||
6ad11d81 JH |
2270 | =item Odd number of arguments for overload::constant |
2271 | ||
2272 | (W) The call to overload::constant contained an odd number of arguments. | |
2273 | The arguments should come in pairs. | |
2274 | ||
1930e939 | 2275 | =item Odd number of elements in hash assignment |
a0d0e21e | 2276 | |
be771a83 GS |
2277 | (W misc) You specified an odd number of elements to initialize a hash, |
2278 | which is odd, because hashes come in key/value pairs. | |
a0d0e21e | 2279 | |
bbce6d69 | 2280 | =item Offset outside string |
2281 | ||
2282 | (F) You tried to do a read/write/send/recv operation with an offset | |
be771a83 GS |
2283 | pointing outside the buffer. This is difficult to imagine. The sole |
2284 | exception to this is that C<sysread()>ing past the buffer will extend | |
2285 | the buffer and zero pad the new area. | |
bbce6d69 | 2286 | |
9ddeeac9 JH |
2287 | =item -%s on unopened filehandle %s |
2288 | ||
2289 | (W unopened) You tried to invoke a file test operator on a filehandle | |
c289d2f7 | 2290 | that isn't open. Check your control flow. See also L<perlfunc/-X>. |
9ddeeac9 | 2291 | |
c289d2f7 | 2292 | =item %s() on unopened %s |
2dd78f96 JH |
2293 | |
2294 | (W unopened) An I/O operation was attempted on a filehandle that was | |
2295 | never initialized. You need to do an open(), a sysopen(), or a socket() | |
2296 | call, or call a constructor from the FileHandle package. | |
2297 | ||
a0d0e21e LW |
2298 | =item oops: oopsAV |
2299 | ||
e476b1b5 | 2300 | (S internal) An internal warning that the grammar is screwed up. |
a0d0e21e LW |
2301 | |
2302 | =item oops: oopsHV | |
2303 | ||
e476b1b5 | 2304 | (S internal) An internal warning that the grammar is screwed up. |
a0d0e21e | 2305 | |
56f7f34b | 2306 | =item Operation `%s': no method found, %s |
44a8e56a | 2307 | |
be771a83 GS |
2308 | (F) An attempt was made to perform an overloaded operation for which no |
2309 | handler was defined. While some handlers can be autogenerated in terms | |
2310 | of other handlers, there is no default handler for any operation, unless | |
2311 | C<fallback> overloading key is specified to be true. See L<overload>. | |
44a8e56a | 2312 | |
748a9306 LW |
2313 | =item Operator or semicolon missing before %s |
2314 | ||
be771a83 GS |
2315 | (S ambiguous) You used a variable or subroutine call where the parser |
2316 | was expecting an operator. The parser has assumed you really meant to | |
2317 | use an operator, but this is highly likely to be incorrect. For | |
2318 | example, if you say "*foo *foo" it will be interpreted as if you said | |
2319 | "*foo * 'foo'". | |
748a9306 | 2320 | |
6df41af2 GS |
2321 | =item "our" variable %s redeclared |
2322 | ||
be771a83 GS |
2323 | (W misc) You seem to have already declared the same global once before |
2324 | in the current lexical scope. | |
6df41af2 | 2325 | |
a80b8354 GS |
2326 | =item Out of memory! |
2327 | ||
2328 | (X) The malloc() function returned 0, indicating there was insufficient | |
be771a83 GS |
2329 | remaining memory (or virtual memory) to satisfy the request. Perl has |
2330 | no option but to exit immediately. | |
a80b8354 | 2331 | |
6df41af2 | 2332 | =item Out of memory during "large" request for %s |
a0d0e21e | 2333 | |
6df41af2 GS |
2334 | (F) The malloc() function returned 0, indicating there was insufficient |
2335 | remaining memory (or virtual memory) to satisfy the request. However, | |
be771a83 GS |
2336 | the request was judged large enough (compile-time default is 64K), so a |
2337 | possibility to shut down by trapping this error is granted. | |
a0d0e21e | 2338 | |
1b979e0a | 2339 | =item Out of memory during request for %s |
a0d0e21e | 2340 | |
be771a83 GS |
2341 | (X|F) The malloc() function returned 0, indicating there was |
2342 | insufficient remaining memory (or virtual memory) to satisfy the | |
2343 | request. | |
eff9c6e2 CS |
2344 | |
2345 | The request was judged to be small, so the possibility to trap it | |
2346 | depends on the way perl was compiled. By default it is not trappable. | |
be771a83 GS |
2347 | However, if compiled for this, Perl may use the contents of C<$^M> as an |
2348 | emergency pool after die()ing with this message. In this case the error | |
b022d2d2 IZ |
2349 | is trappable I<once>, and the error message will include the line and file |
2350 | where the failed request happened. | |
55497cff | 2351 | |
1b979e0a IZ |
2352 | =item Out of memory during ridiculously large request |
2353 | ||
2354 | (F) You can't allocate more than 2^31+"small amount" bytes. This error | |
be771a83 GS |
2355 | is most likely to be caused by a typo in the Perl program. e.g., |
2356 | C<$arr[time]> instead of C<$arr[$time]>. | |
1b979e0a | 2357 | |
6df41af2 GS |
2358 | =item Out of memory for yacc stack |
2359 | ||
be771a83 GS |
2360 | (F) The yacc parser wanted to grow its stack so it could continue |
2361 | parsing, but realloc() wouldn't give it more memory, virtual or | |
2362 | otherwise. | |
6df41af2 GS |
2363 | |
2364 | =item @ outside of string | |
2365 | ||
2366 | (F) You had a pack template that specified an absolute position outside | |
2367 | the string being unpacked. See L<perlfunc/pack>. | |
2368 | ||
2369 | =item %s package attribute may clash with future reserved word: %s | |
2370 | ||
be771a83 GS |
2371 | (W reserved) A lowercase attribute name was used that had a |
2372 | package-specific handler. That name might have a meaning to Perl itself | |
2373 | some day, even though it doesn't yet. Perhaps you should use a | |
2374 | mixed-case attribute name, instead. See L<attributes>. | |
6df41af2 | 2375 | |
a0d0e21e LW |
2376 | =item page overflow |
2377 | ||
be771a83 GS |
2378 | (W io) A single call to write() produced more lines than can fit on a |
2379 | page. See L<perlform>. | |
a0d0e21e | 2380 | |
6df41af2 GS |
2381 | =item panic: %s |
2382 | ||
2383 | (P) An internal error. | |
2384 | ||
a0d0e21e LW |
2385 | =item panic: ck_grep |
2386 | ||
2387 | (P) Failed an internal consistency check trying to compile a grep. | |
2388 | ||
2389 | =item panic: ck_split | |
2390 | ||
2391 | (P) Failed an internal consistency check trying to compile a split. | |
2392 | ||
2393 | =item panic: corrupt saved stack index | |
2394 | ||
be771a83 GS |
2395 | (P) The savestack was requested to restore more localized values than |
2396 | there are in the savestack. | |
a0d0e21e | 2397 | |
810b8aa5 GS |
2398 | =item panic: del_backref |
2399 | ||
2400 | (P) Failed an internal consistency check while trying to reset a weak | |
2401 | reference. | |
2402 | ||
a0d0e21e LW |
2403 | =item panic: die %s |
2404 | ||
2405 | (P) We popped the context stack to an eval context, and then discovered | |
2406 | it wasn't an eval context. | |
2407 | ||
2408 | =item panic: do_match | |
2409 | ||
be771a83 GS |
2410 | (P) The internal pp_match() routine was called with invalid operational |
2411 | data. | |
a0d0e21e LW |
2412 | |
2413 | =item panic: do_split | |
2414 | ||
2415 | (P) Something terrible went wrong in setting up for the split. | |
2416 | ||
2417 | =item panic: do_subst | |
2418 | ||
be771a83 GS |
2419 | (P) The internal pp_subst() routine was called with invalid operational |
2420 | data. | |
a0d0e21e LW |
2421 | |
2422 | =item panic: do_trans | |
2423 | ||
be771a83 GS |
2424 | (P) The internal do_trans() routine was called with invalid operational |
2425 | data. | |
a0d0e21e | 2426 | |
c635e13b | 2427 | =item panic: frexp |
2428 | ||
2429 | (P) The library function frexp() failed, making printf("%f") impossible. | |
2430 | ||
a0d0e21e LW |
2431 | =item panic: goto |
2432 | ||
2433 | (P) We popped the context stack to a context with the specified label, | |
2434 | and then discovered it wasn't a context we know how to do a goto in. | |
2435 | ||
2436 | =item panic: INTERPCASEMOD | |
2437 | ||
2438 | (P) The lexer got into a bad state at a case modifier. | |
2439 | ||
2440 | =item panic: INTERPCONCAT | |
2441 | ||
2442 | (P) The lexer got into a bad state parsing a string with brackets. | |
2443 | ||
e446cec8 IZ |
2444 | =item panic: kid popen errno read |
2445 | ||
2446 | (F) forked child returned an incomprehensible message about its errno. | |
2447 | ||
a0d0e21e LW |
2448 | =item panic: last |
2449 | ||
2450 | (P) We popped the context stack to a block context, and then discovered | |
2451 | it wasn't a block context. | |
2452 | ||
2453 | =item panic: leave_scope clearsv | |
2454 | ||
be771a83 GS |
2455 | (P) A writable lexical variable became read-only somehow within the |
2456 | scope. | |
a0d0e21e LW |
2457 | |
2458 | =item panic: leave_scope inconsistency | |
2459 | ||
2460 | (P) The savestack probably got out of sync. At least, there was an | |
2461 | invalid enum on the top of it. | |
2462 | ||
810b8aa5 GS |
2463 | =item panic: magic_killbackrefs |
2464 | ||
2465 | (P) Failed an internal consistency check while trying to reset all weak | |
2466 | references to an object. | |
2467 | ||
6df41af2 GS |
2468 | =item panic: malloc |
2469 | ||
2470 | (P) Something requested a negative number of bytes of malloc. | |
2471 | ||
a0d0e21e LW |
2472 | =item panic: mapstart |
2473 | ||
2474 | (P) The compiler is screwed up with respect to the map() function. | |
2475 | ||
2476 | =item panic: null array | |
2477 | ||
2478 | (P) One of the internal array routines was passed a null AV pointer. | |
2479 | ||
2480 | =item panic: pad_alloc | |
2481 | ||
2482 | (P) The compiler got confused about which scratch pad it was allocating | |
2483 | and freeing temporaries and lexicals from. | |
2484 | ||
2485 | =item panic: pad_free curpad | |
2486 | ||
2487 | (P) The compiler got confused about which scratch pad it was allocating | |
2488 | and freeing temporaries and lexicals from. | |
2489 | ||
2490 | =item panic: pad_free po | |
2491 | ||
2492 | (P) An invalid scratch pad offset was detected internally. | |
2493 | ||
2494 | =item panic: pad_reset curpad | |
2495 | ||
2496 | (P) The compiler got confused about which scratch pad it was allocating | |
2497 | and freeing temporaries and lexicals from. | |
2498 | ||
2499 | =item panic: pad_sv po | |
2500 | ||
2501 | (P) An invalid scratch pad offset was detected internally. | |
2502 | ||
2503 | =item panic: pad_swipe curpad | |
2504 | ||
2505 | (P) The compiler got confused about which scratch pad it was allocating | |
2506 | and freeing temporaries and lexicals from. | |
2507 | ||
2508 | =item panic: pad_swipe po | |
2509 | ||
2510 | (P) An invalid scratch pad offset was detected internally. | |
2511 | ||
2512 | =item panic: pp_iter | |
2513 | ||
2514 | (P) The foreach iterator got called in a non-loop context frame. | |
2515 | ||
2516 | =item panic: realloc | |
2517 | ||
2518 | (P) Something requested a negative number of bytes of realloc. | |
2519 | ||
2520 | =item panic: restartop | |
2521 | ||
2522 | (P) Some internal routine requested a goto (or something like it), and | |
2523 | didn't supply the destination. | |
2524 | ||
2525 | =item panic: return | |
2526 | ||
2527 | (P) We popped the context stack to a subroutine or eval context, and | |
2528 | then discovered it wasn't a subroutine or eval context. | |
2529 | ||
2530 | =item panic: scan_num | |
2531 | ||
2532 | (P) scan_num() got called on something that wasn't a number. | |
2533 | ||
2534 | =item panic: sv_insert | |
2535 | ||
2536 | (P) The sv_insert() routine was told to remove more string than there | |
2537 | was string. | |
2538 | ||
2539 | =item panic: top_env | |
2540 | ||
6224f72b | 2541 | (P) The compiler attempted to do a goto, or something weird like that. |
a0d0e21e LW |
2542 | |
2543 | =item panic: yylex | |
2544 | ||
2545 | (P) The lexer got into a bad state while processing a case modifier. | |
2546 | ||
dea0fc0b JH |
2547 | =item panic: utf16_to_utf8: odd bytelen |
2548 | ||
2549 | (P) Something tried to call utf16_to_utf8 with an odd (as opposed | |
2550 | to even) byte length. | |
2551 | ||
7b8d334a | 2552 | =item Parentheses missing around "%s" list |
a0d0e21e | 2553 | |
e476b1b5 | 2554 | (W parenthesis) You said something like |
a0d0e21e LW |
2555 | |
2556 | my $foo, $bar = @_; | |
2557 | ||
2558 | when you meant | |
2559 | ||
2560 | my ($foo, $bar) = @_; | |
2561 | ||
54884818 | 2562 | Remember that "my", "our", and "local" bind tighter than comma. |
a0d0e21e | 2563 | |
75b44862 | 2564 | =item Perl %s required--this is only version %s, stopped |
a0d0e21e | 2565 | |
be771a83 GS |
2566 | (F) The module in question uses features of a version of Perl more |
2567 | recent than the currently running version. How long has it been since | |
2568 | you upgraded, anyway? See L<perlfunc/require>. | |
a0d0e21e | 2569 | |
6df41af2 GS |
2570 | =item PERL_SH_DIR too long |
2571 | ||
2572 | (F) An error peculiar to OS/2. PERL_SH_DIR is the directory to find the | |
fecfaeb8 | 2573 | C<sh>-shell in. See "PERL_SH_DIR" in L<perlos2>. |
6df41af2 GS |
2574 | |
2575 | =item perl: warning: Setting locale failed. | |
2576 | ||
2577 | (S) The whole warning message will look something like: | |
2578 | ||
2579 | perl: warning: Setting locale failed. | |
2580 | perl: warning: Please check that your locale settings: | |
2581 | LC_ALL = "En_US", | |
2582 | LANG = (unset) | |
2583 | are supported and installed on your system. | |
2584 | perl: warning: Falling back to the standard locale ("C"). | |
2585 | ||
2586 | Exactly what were the failed locale settings varies. In the above the | |
2587 | settings were that the LC_ALL was "En_US" and the LANG had no value. | |
0ea6b70f JH |
2588 | This error means that Perl detected that you and/or your operating |
2589 | system supplier and/or system administrator have set up the so-called | |
2590 | locale system but Perl could not use those settings. This was not | |
2591 | dead serious, fortunately: there is a "default locale" called "C" that | |
2592 | Perl can and will use, the script will be run. Before you really fix | |
2593 | the problem, however, you will get the same error message each time | |
2594 | you run Perl. How to really fix the problem can be found in | |
2595 | L<perllocale> section B<LOCALE PROBLEMS>. | |
6df41af2 | 2596 | |
ef0f9817 DD |
2597 | =item perlio: unknown layer "%s" |
2598 | ||
2599 | (S) An attempt was made to push an unknown layer onto the Perl I/O | |
2600 | system. (Layers take care of transforming data between external and | |
2601 | internal representations.) Note that some layers, such as C<mmap>, | |
2602 | are not supported in all environments. If your program didn't | |
2603 | explicitly request the failing operation, it may be the result of the | |
2604 | value of the environment variable PERLIO. | |
2605 | ||
a0d0e21e LW |
2606 | =item Permission denied |
2607 | ||
2608 | (F) The setuid emulator in suidperl decided you were up to no good. | |
2609 | ||
bd3fa61c | 2610 | =item pid %x not a child |
748a9306 | 2611 | |
be771a83 GS |
2612 | (W exec) A warning peculiar to VMS. Waitpid() was asked to wait for a |
2613 | process which isn't a subprocess of the current process. While this is | |
2614 | fine from VMS' perspective, it's probably not what you intended. | |
748a9306 | 2615 | |
b45f050a JF |
2616 | =item POSIX syntax [%s] belongs inside character classes |
2617 | ||
2618 | (W unsafe) The character class constructs [: :], [= =], and [. .] go | |
2619 | I<inside> character classes, the [] are part of the construct, for | |
2620 | example: /[012[:alpha:]345]/. Note that [= =] and [. .] are not | |
2621 | currently implemented; they are simply placeholders for future | |
2622 | extensions and will cause fatal errors. | |
2623 | ||
2624 | =item POSIX syntax [. .] is reserved for future extensions | |
2625 | ||
2626 | (F regexp) Within regular expression character classes ([]) the syntax | |
2627 | beginning with "[." and ending with ".]" is reserved for future | |
2628 | extensions. If you need to represent those character sequences inside | |
2629 | a regular expression character class, just quote the square brackets | |
2630 | with the backslash: "\[." and ".\]". | |
2631 | ||
2632 | =item POSIX syntax [= =] is reserved for future extensions | |
2633 | ||
2634 | (F) Within regular expression character classes ([]) the syntax | |
2635 | beginning with "[=" and ending with "=]" is reserved for future | |
2636 | extensions. If you need to represent those character sequences inside | |
2637 | a regular expression character class, just quote the square brackets | |
2638 | with the backslash: "\[=" and "=\]". | |
2639 | ||
2640 | =item POSIX class [:%s:] unknown | |
2641 | ||
2642 | (F) The class in the character class [: :] syntax is unknown. See | |
2643 | L<perlre>. | |
2644 | ||
a0d0e21e LW |
2645 | =item POSIX getpgrp can't take an argument |
2646 | ||
81777298 | 2647 | (F) Your system has POSIX getpgrp(), which takes no argument, unlike |
a0d0e21e LW |
2648 | the BSD version, which takes a pid. |
2649 | ||
bbce6d69 | 2650 | =item Possible attempt to put comments in qw() list |
2651 | ||
e476b1b5 | 2652 | (W qw) qw() lists contain items separated by whitespace; as with literal |
75b44862 | 2653 | strings, comment characters are not ignored, but are instead treated as |
be771a83 GS |
2654 | literal data. (You may have used different delimiters than the |
2655 | parentheses shown here; braces are also frequently used.) | |
bbce6d69 | 2656 | |
774d564b | 2657 | You probably wrote something like this: |
2658 | ||
54310121 | 2659 | @list = qw( |
774d564b | 2660 | a # a comment |
bbce6d69 | 2661 | b # another comment |
774d564b | 2662 | ); |
bbce6d69 | 2663 | |
2664 | when you should have written this: | |
2665 | ||
774d564b | 2666 | @list = qw( |
54310121 | 2667 | a |
2668 | b | |
774d564b | 2669 | ); |
2670 | ||
2671 | If you really want comments, build your list the | |
2672 | old-fashioned way, with quotes and commas: | |
2673 | ||
2674 | @list = ( | |
2675 | 'a', # a comment | |
2676 | 'b', # another comment | |
2677 | ); | |
bbce6d69 | 2678 | |
2679 | =item Possible attempt to separate words with commas | |
2680 | ||
be771a83 GS |
2681 | (W qw) qw() lists contain items separated by whitespace; therefore |
2682 | commas aren't needed to separate the items. (You may have used | |
2683 | different delimiters than the parentheses shown here; braces are also | |
2684 | frequently used.) | |
bbce6d69 | 2685 | |
54310121 | 2686 | You probably wrote something like this: |
bbce6d69 | 2687 | |
774d564b | 2688 | qw! a, b, c !; |
2689 | ||
2690 | which puts literal commas into some of the list items. Write it without | |
2691 | commas if you don't want them to appear in your data: | |
bbce6d69 | 2692 | |
774d564b | 2693 | qw! a b c !; |
bbce6d69 | 2694 | |
a0d0e21e LW |
2695 | =item Possible memory corruption: %s overflowed 3rd argument |
2696 | ||
2697 | (F) An ioctl() or fcntl() returned more than Perl was bargaining for. | |
2698 | Perl guesses a reasonable buffer size, but puts a sentinel byte at the | |
2699 | end of the buffer just in case. This sentinel byte got clobbered, and | |
2700 | Perl assumes that memory is now corrupted. See L<perlfunc/ioctl>. | |
2701 | ||
6df41af2 GS |
2702 | =item Possible Y2K bug: %s |
2703 | ||
2704 | (W y2k) You are concatenating the number 19 with another number, which | |
2705 | could be a potential Year 2000 problem. | |
2706 | ||
8cd79558 GS |
2707 | =item pragma "attrs" is deprecated, use "sub NAME : ATTRS" instead |
2708 | ||
4375e838 | 2709 | (W deprecated) You have written something like this: |
8cd79558 GS |
2710 | |
2711 | sub doit | |
2712 | { | |
2713 | use attrs qw(locked); | |
2714 | } | |
2715 | ||
2716 | You should use the new declaration syntax instead. | |
2717 | ||
2718 | sub doit : locked | |
2719 | { | |
2720 | ... | |
2721 | ||
2722 | The C<use attrs> pragma is now obsolete, and is only provided for | |
2723 | backward-compatibility. See L<perlsub/"Subroutine Attributes">. | |
2724 | ||
a0d0e21e LW |
2725 | =item Precedence problem: open %s should be open(%s) |
2726 | ||
e476b1b5 | 2727 | (S precedence) The old irregular construct |
cb1a09d0 | 2728 | |
a0d0e21e LW |
2729 | open FOO || die; |
2730 | ||
2731 | is now misinterpreted as | |
2732 | ||
2733 | open(FOO || die); | |
2734 | ||
be771a83 GS |
2735 | because of the strict regularization of Perl 5's grammar into unary and |
2736 | list operators. (The old open was a little of both.) You must put | |
2737 | parentheses around the filehandle, or use the new "or" operator instead | |
2738 | of "||". | |
a0d0e21e | 2739 | |
3cdd684c TP |
2740 | =item Premature end of script headers |
2741 | ||
2742 | See Server error. | |
2743 | ||
6df41af2 GS |
2744 | =item printf() on closed filehandle %s |
2745 | ||
be771a83 | 2746 | (W closed) The filehandle you're writing to got itself closed sometime |
c289d2f7 | 2747 | before now. Check your control flow. |
6df41af2 | 2748 | |
9a7dcd9c | 2749 | =item print() on closed filehandle %s |
a0d0e21e | 2750 | |
be771a83 | 2751 | (W closed) The filehandle you're printing on got itself closed sometime |
c289d2f7 | 2752 | before now. Check your control flow. |
a0d0e21e | 2753 | |
6df41af2 | 2754 | =item Process terminated by SIG%s |
a0d0e21e | 2755 | |
6df41af2 GS |
2756 | (W) This is a standard message issued by OS/2 applications, while *nix |
2757 | applications die in silence. It is considered a feature of the OS/2 | |
2758 | port. One can easily disable this by appropriate sighandlers, see | |
2759 | L<perlipc/"Signals">. See also "Process terminated by SIGTERM/SIGINT" | |
fecfaeb8 | 2760 | in L<perlos2>. |
a0d0e21e | 2761 | |
3fe9a6f1 | 2762 | =item Prototype mismatch: %s vs %s |
4633a7c4 | 2763 | |
be771a83 GS |
2764 | (S unsafe) The subroutine being declared or defined had previously been |
2765 | declared or defined with a different function prototype. | |
4633a7c4 | 2766 | |
79eeca27 | 2767 | =item Quantifier in {,} bigger than %d before << HERE in regex m/%s/ |
9baa0206 | 2768 | |
b45f050a | 2769 | (F) There is currently a limit to the size of the min and max values of the |
79eeca27 | 2770 | {min,max} construct. The << HERE shows in the regular expression about where |
b45f050a | 2771 | the problem was discovered. See L<perlre>. |
9baa0206 | 2772 | |
551e1d92 | 2773 | =item Quantifier unexpected on zero-length expression before << HERE %s |
9baa0206 | 2774 | |
b45f050a JF |
2775 | (W regexp) You applied a regular expression quantifier in a place where |
2776 | it makes no sense, such as on a zero-width assertion. Try putting the | |
2777 | quantifier inside the assertion instead. For example, the way to match | |
2778 | "abc" provided that it is followed by three repetitions of "xyz" is | |
2779 | C</abc(?=(?:xyz){3})/>, not C</abc(?=xyz){3}/>. | |
9baa0206 | 2780 | |
89ea2908 GA |
2781 | =item Range iterator outside integer range |
2782 | ||
2783 | (F) One (or both) of the numeric arguments to the range operator ".." | |
2784 | are outside the range which can be represented by integers internally. | |
be771a83 GS |
2785 | One possible workaround is to force Perl to use magical string increment |
2786 | by prepending "0" to your numbers. | |
89ea2908 | 2787 | |
9a7dcd9c | 2788 | =item readline() on closed filehandle %s |
a0d0e21e | 2789 | |
75b44862 | 2790 | (W closed) The filehandle you're reading from got itself closed sometime |
c289d2f7 | 2791 | before now. Check your control flow. |
a0d0e21e | 2792 | |
6df41af2 GS |
2793 | =item Reallocation too large: %lx |
2794 | ||
2795 | (F) You can't allocate more than 64K on an MS-DOS machine. | |
2796 | ||
4ad56ec9 IZ |
2797 | =item realloc() of freed memory ignored |
2798 | ||
be771a83 GS |
2799 | (S malloc) An internal routine called realloc() on something that had |
2800 | already been freed. | |
4ad56ec9 | 2801 | |
a0d0e21e LW |
2802 | =item Recompile perl with B<-D>DEBUGGING to use B<-D> switch |
2803 | ||
be771a83 GS |
2804 | (F debugging) You can't use the B<-D> option unless the code to produce |
2805 | the desired output is compiled into Perl, which entails some overhead, | |
a0d0e21e LW |
2806 | which is why it's currently left out of your copy. |
2807 | ||
3e0ccd42 | 2808 | =item Recursive inheritance detected in package '%s' |
a0d0e21e LW |
2809 | |
2810 | (F) More than 100 levels of inheritance were used. Probably indicates | |
2811 | an unintended loop in your inheritance hierarchy. | |
2812 | ||
7a4340ed | 2813 | =item Recursive inheritance detected while looking for method %s |
3e0ccd42 | 2814 | |
be771a83 GS |
2815 | (F) More than 100 levels of inheritance were encountered while invoking |
2816 | a method. Probably indicates an unintended loop in your inheritance | |
2817 | hierarchy. | |
3e0ccd42 | 2818 | |
1930e939 TP |
2819 | =item Reference found where even-sized list expected |
2820 | ||
be771a83 GS |
2821 | (W misc) You gave a single reference where Perl was expecting a list |
2822 | with an even number of elements (for assignment to a hash). This usually | |
2823 | means that you used the anon hash constructor when you meant to use | |
2824 | parens. In any case, a hash requires key/value B<pairs>. | |
7b8d334a GS |
2825 | |
2826 | %hash = { one => 1, two => 2, }; # WRONG | |
2827 | %hash = [ qw/ an anon array / ]; # WRONG | |
2828 | %hash = ( one => 1, two => 2, ); # right | |
2829 | %hash = qw( one 1 two 2 ); # also fine | |
2830 | ||
810b8aa5 GS |
2831 | =item Reference is already weak |
2832 | ||
e476b1b5 | 2833 | (W misc) You have attempted to weaken a reference that is already weak. |
810b8aa5 GS |
2834 | Doing so has no effect. |
2835 | ||
a0d0e21e LW |
2836 | =item Reference miscount in sv_replace() |
2837 | ||
be771a83 GS |
2838 | (W internal) The internal sv_replace() function was handed a new SV with |
2839 | a reference count of other than 1. | |
a0d0e21e | 2840 | |
b1866b2d | 2841 | =item Reference to nonexistent group before << HERE in regex m/%s/ |
b45f050a JF |
2842 | |
2843 | (F) You used something like C<\7> in your regular expression, but there are | |
2844 | not at least seven sets of capturing parentheses in the expression. If you | |
2845 | wanted to have the character with value 7 inserted into the regular expression, | |
2846 | prepend a zero to make the number at least two digits: C<\07> | |
9baa0206 | 2847 | |
79eeca27 | 2848 | The << HERE shows in the regular expression about where the problem was |
b45f050a | 2849 | discovered. |
9baa0206 | 2850 | |
a0d0e21e LW |
2851 | =item regexp memory corruption |
2852 | ||
2853 | (P) The regular expression engine got confused by what the regular | |
2854 | expression compiler gave it. | |
2855 | ||
b45f050a | 2856 | =item Regexp out of space |
a0d0e21e | 2857 | |
be771a83 GS |
2858 | (P) A "can't happen" error, because safemalloc() should have caught it |
2859 | earlier. | |
a0d0e21e | 2860 | |
7a95317d GS |
2861 | =item Repeat count in pack overflows |
2862 | ||
be771a83 GS |
2863 | (F) You can't specify a repeat count so large that it overflows your |
2864 | signed integers. See L<perlfunc/pack>. | |
7a95317d GS |
2865 | |
2866 | =item Repeat count in unpack overflows | |
2867 | ||
be771a83 GS |
2868 | (F) You can't specify a repeat count so large that it overflows your |
2869 | signed integers. See L<perlfunc/unpack>. | |
7a95317d | 2870 | |
a0d0e21e LW |
2871 | =item Reversed %s= operator |
2872 | ||
be771a83 GS |
2873 | (W syntax) You wrote your assignment operator backwards. The = must |
2874 | always comes last, to avoid ambiguity with subsequent unary operators. | |
a0d0e21e LW |
2875 | |
2876 | =item Runaway format | |
2877 | ||
2878 | (F) Your format contained the ~~ repeat-until-blank sequence, but it | |
2879 | produced 200 lines at once, and the 200th line looked exactly like the | |
2880 | 199th line. Apparently you didn't arrange for the arguments to exhaust | |
2881 | themselves, either by using ^ instead of @ (for scalar variables), or by | |
2882 | shifting or popping (for array variables). See L<perlform>. | |
2883 | ||
2884 | =item Scalar value @%s[%s] better written as $%s[%s] | |
2885 | ||
be771a83 GS |
2886 | (W syntax) You've used an array slice (indicated by @) to select a |
2887 | single element of an array. Generally it's better to ask for a scalar | |
2888 | value (indicated by $). The difference is that C<$foo[&bar]> always | |
2889 | behaves like a scalar, both when assigning to it and when evaluating its | |
2890 | argument, while C<@foo[&bar]> behaves like a list when you assign to it, | |
2891 | and provides a list context to its subscript, which can do weird things | |
2892 | if you're expecting only one subscript. | |
a0d0e21e | 2893 | |
748a9306 | 2894 | On the other hand, if you were actually hoping to treat the array |
5f05dabc | 2895 | element as a list, you need to look into how references work, because |
748a9306 LW |
2896 | Perl will not magically convert between scalars and lists for you. See |
2897 | L<perlref>. | |
2898 | ||
a6006777 | 2899 | =item Scalar value @%s{%s} better written as $%s{%s} |
2900 | ||
75b44862 | 2901 | (W syntax) You've used a hash slice (indicated by @) to select a single |
be771a83 GS |
2902 | element of a hash. Generally it's better to ask for a scalar value |
2903 | (indicated by $). The difference is that C<$foo{&bar}> always behaves | |
2904 | like a scalar, both when assigning to it and when evaluating its | |
2905 | argument, while C<@foo{&bar}> behaves like a list when you assign to it, | |
2906 | and provides a list context to its subscript, which can do weird things | |
2907 | if you're expecting only one subscript. | |
2908 | ||
2909 | On the other hand, if you were actually hoping to treat the hash element | |
2910 | as a list, you need to look into how references work, because Perl will | |
2911 | not magically convert between scalars and lists for you. See | |
a6006777 | 2912 | L<perlref>. |
2913 | ||
a0d0e21e LW |
2914 | =item Script is not setuid/setgid in suidperl |
2915 | ||
54310121 | 2916 | (F) Oddly, the suidperl program was invoked on a script without a setuid |
2917 | or setgid bit set. This doesn't make much sense. | |
a0d0e21e LW |
2918 | |
2919 | =item Search pattern not terminated | |
2920 | ||
2921 | (F) The lexer couldn't find the final delimiter of a // or m{} | |
2922 | construct. Remember that bracketing delimiters count nesting level. | |
fb73857a | 2923 | Missing the leading C<$> from a variable C<$m> may cause this error. |
a0d0e21e | 2924 | |
9ddeeac9 | 2925 | =item %sseek() on unopened filehandle |
a0d0e21e | 2926 | |
be771a83 GS |
2927 | (W unopened) You tried to use the seek() or sysseek() function on a |
2928 | filehandle that was either never opened or has since been closed. | |
a0d0e21e LW |
2929 | |
2930 | =item select not implemented | |
2931 | ||
2932 | (F) This machine doesn't implement the select() system call. | |
2933 | ||
ae21d580 | 2934 | =item Self-ties of arrays and hashes are not supported |
68a4a7e4 | 2935 | |
ae21d580 JH |
2936 | (F) Self-ties are of arrays and hashes are not supported in |
2937 | the current implementation. | |
68a4a7e4 | 2938 | |
6df41af2 | 2939 | =item Semicolon seems to be missing |
a0d0e21e | 2940 | |
75b44862 GS |
2941 | (W semicolon) A nearby syntax error was probably caused by a missing |
2942 | semicolon, or possibly some other missing operator, such as a comma. | |
a0d0e21e LW |
2943 | |
2944 | =item semi-panic: attempt to dup freed string | |
2945 | ||
be771a83 GS |
2946 | (S internal) The internal newSVsv() routine was called to duplicate a |
2947 | scalar that had previously been marked as free. | |
a0d0e21e | 2948 | |
6df41af2 | 2949 | =item sem%s not implemented |
a0d0e21e | 2950 | |
6df41af2 | 2951 | (F) You don't have System V semaphore IPC on your system. |
a0d0e21e | 2952 | |
69282e91 | 2953 | =item send() on closed socket %s |
a0d0e21e | 2954 | |
be771a83 | 2955 | (W closed) The socket you're sending to got itself closed sometime |
c289d2f7 | 2956 | before now. Check your control flow. |
a0d0e21e | 2957 | |
79eeca27 | 2958 | =item Sequence (? incomplete before << HERE mark in regex m/%s/ |
7b8d334a | 2959 | |
79eeca27 | 2960 | (F) A regular expression ended with an incomplete extension (?. The <<<HERE |
b45f050a | 2961 | shows in the regular expression about where the problem was discovered. See |
be771a83 | 2962 | L<perlre>. |
1b1626e4 | 2963 | |
551e1d92 | 2964 | =item Sequence (?{...}) not terminated or not {}-balanced in %s |
b45f050a JF |
2965 | |
2966 | (F) If the contents of a (?{...}) clause contains braces, they must balance | |
2967 | for Perl to properly detect the end of the clause. See L<perlre>. | |
a0d0e21e | 2968 | |
551e1d92 | 2969 | =item Sequence (?%s...) not implemented before << HERE mark in %s |
a0d0e21e | 2970 | |
b45f050a | 2971 | (F) A proposed regular expression extension has the character reserved but |
79eeca27 | 2972 | has not yet been written. The << HERE shows in the regular expression about |
b45f050a JF |
2973 | where the problem was discovered. See L<perlre>. |
2974 | ||
551e1d92 | 2975 | =item Sequence (?%s...) not recognized before << HERE mark in %s |
a0d0e21e LW |
2976 | |
2977 | (F) You used a regular expression extension that doesn't make sense. | |
79eeca27 | 2978 | The << HERE shows in the regular expression about |
b45f050a | 2979 | where the problem was discovered. |
a0d0e21e LW |
2980 | See L<perlre>. |
2981 | ||
b45f050a | 2982 | =item Sequence (?#... not terminated in regex m/%s/ |
6df41af2 GS |
2983 | |
2984 | (F) A regular expression comment must be terminated by a closing | |
2985 | parenthesis. Embedded parentheses aren't allowed. See L<perlre>. | |
2986 | ||
2987 | =item 500 Server error | |
2988 | ||
2989 | See Server error. | |
2990 | ||
a5f75d66 AD |
2991 | =item Server error |
2992 | ||
3cdd684c | 2993 | This is the error message generally seen in a browser window when trying |
be771a83 GS |
2994 | to run a CGI program (including SSI) over the web. The actual error text |
2995 | varies widely from server to server. The most frequently-seen variants | |
2996 | are "500 Server error", "Method (something) not permitted", "Document | |
2997 | contains no data", "Premature end of script headers", and "Did not | |
2998 | produce a valid header". | |
9607fc9c | 2999 | |
3000 | B<This is a CGI error, not a Perl error>. | |
3001 | ||
be771a83 GS |
3002 | You need to make sure your script is executable, is accessible by the |
3003 | user CGI is running the script under (which is probably not the user | |
3004 | account you tested it under), does not rely on any environment variables | |
3005 | (like PATH) from the user it isn't running under, and isn't in a | |
3006 | location where the CGI server can't find it, basically, more or less. | |
3007 | Please see the following for more information: | |
9607fc9c | 3008 | |
be94a901 GS |
3009 | http://www.perl.com/CPAN/doc/FAQs/cgi/idiots-guide.html |
3010 | http://www.perl.com/CPAN/doc/FAQs/cgi/perl-cgi-faq.html | |
9607fc9c | 3011 | ftp://rtfm.mit.edu/pub/usenet/news.answers/www/cgi-faq |
3012 | http://hoohoo.ncsa.uiuc.edu/cgi/interface.html | |
3013 | http://www-genome.wi.mit.edu/WWW/faqs/www-security-faq.html | |
a5f75d66 | 3014 | |
be94a901 GS |
3015 | You should also look at L<perlfaq9>. |
3016 | ||
a0d0e21e LW |
3017 | =item setegid() not implemented |
3018 | ||
be771a83 GS |
3019 | (F) You tried to assign to C<$)>, and your operating system doesn't |
3020 | support the setegid() system call (or equivalent), or at least Configure | |
3021 | didn't think so. | |
a0d0e21e LW |
3022 | |
3023 | =item seteuid() not implemented | |
3024 | ||
be771a83 GS |
3025 | (F) You tried to assign to C<< $> >>, and your operating system doesn't |
3026 | support the seteuid() system call (or equivalent), or at least Configure | |
3027 | didn't think so. | |
a0d0e21e | 3028 | |
81777298 GS |
3029 | =item setpgrp can't take arguments |
3030 | ||
be771a83 GS |
3031 | (F) Your system has the setpgrp() from BSD 4.2, which takes no |
3032 | arguments, unlike POSIX setpgid(), which takes a process ID and process | |
3033 | group ID. | |
81777298 | 3034 | |
a0d0e21e LW |
3035 | =item setrgid() not implemented |
3036 | ||
be771a83 GS |
3037 | (F) You tried to assign to C<$(>, and your operating system doesn't |
3038 | support the setrgid() system call (or equivalent), or at least Configure | |
3039 | didn't think so. | |
a0d0e21e LW |
3040 | |
3041 | =item setruid() not implemented | |
3042 | ||
be771a83 GS |
3043 | (F) You tried to assign to C<$<>, and your operating system doesn't |
3044 | support the setruid() system call (or equivalent), or at least Configure | |
3045 | didn't think so. | |
a0d0e21e | 3046 | |
6df41af2 GS |
3047 | =item setsockopt() on closed socket %s |
3048 | ||
be771a83 GS |
3049 | (W closed) You tried to set a socket option on a closed socket. Did you |
3050 | forget to check the return value of your socket() call? See | |
6df41af2 GS |
3051 | L<perlfunc/setsockopt>. |
3052 | ||
a0d0e21e LW |
3053 | =item Setuid/gid script is writable by world |
3054 | ||
be771a83 GS |
3055 | (F) The setuid emulator won't run a script that is writable by the |
3056 | world, because the world might have written on it already. | |
a0d0e21e LW |
3057 | |
3058 | =item shm%s not implemented | |
3059 | ||
3060 | (F) You don't have System V shared memory IPC on your system. | |
3061 | ||
6df41af2 GS |
3062 | =item <> should be quotes |
3063 | ||
3064 | (F) You wrote C<< require <file> >> when you should have written | |
3065 | C<require 'file'>. | |
3066 | ||
3067 | =item /%s/ should probably be written as "%s" | |
3068 | ||
3069 | (W syntax) You have used a pattern where Perl expected to find a string, | |
be771a83 GS |
3070 | as in the first argument to C<join>. Perl will treat the true or false |
3071 | result of matching the pattern against $_ as the string, which is | |
3072 | probably not what you had in mind. | |
6df41af2 | 3073 | |
69282e91 | 3074 | =item shutdown() on closed socket %s |
a0d0e21e | 3075 | |
75b44862 GS |
3076 | (W closed) You tried to do a shutdown on a closed socket. Seems a bit |
3077 | superfluous. | |
a0d0e21e | 3078 | |
f86702cc | 3079 | =item SIG%s handler "%s" not defined |
a0d0e21e | 3080 | |
be771a83 GS |
3081 | (W signal) The signal handler named in %SIG doesn't, in fact, exist. |
3082 | Perhaps you put it into the wrong package? | |
a0d0e21e LW |
3083 | |
3084 | =item sort is now a reserved word | |
3085 | ||
3086 | (F) An ancient error message that almost nobody ever runs into anymore. | |
3087 | But before sort was a keyword, people sometimes used it as a filehandle. | |
3088 | ||
3089 | =item Sort subroutine didn't return a numeric value | |
3090 | ||
3091 | (F) A sort comparison routine must return a number. You probably blew | |
c47ff5f1 | 3092 | it by not using C<< <=> >> or C<cmp>, or by not using them correctly. |
a0d0e21e LW |
3093 | See L<perlfunc/sort>. |
3094 | ||
3095 | =item Sort subroutine didn't return single value | |
3096 | ||
3097 | (F) A sort comparison subroutine may not return a list value with more | |
3098 | or less than one element. See L<perlfunc/sort>. | |
3099 | ||
3100 | =item Split loop | |
3101 | ||
be771a83 GS |
3102 | (P) The split was looping infinitely. (Obviously, a split shouldn't |
3103 | iterate more times than there are characters of input, which is what | |
3104 | happened.) See L<perlfunc/split>. | |
a0d0e21e | 3105 | |
a0d0e21e LW |
3106 | =item Statement unlikely to be reached |
3107 | ||
be771a83 GS |
3108 | (W exec) You did an exec() with some statement after it other than a |
3109 | die(). This is almost always an error, because exec() never returns | |
3110 | unless there was a failure. You probably wanted to use system() | |
3111 | instead, which does return. To suppress this warning, put the exec() in | |
3112 | a block by itself. | |
a0d0e21e | 3113 | |
9ddeeac9 | 3114 | =item stat() on unopened filehandle %s |
6df41af2 | 3115 | |
355b1299 JH |
3116 | (W unopened) You tried to use the stat() function on a filehandle that |
3117 | was either never opened or has since been closed. | |
6df41af2 | 3118 | |
7a4340ed | 3119 | =item Stub found while resolving method `%s' overloading %s |
e7ea3e70 | 3120 | |
be771a83 GS |
3121 | (P) Overloading resolution over @ISA tree may be broken by importation |
3122 | stubs. Stubs should never be implicitly created, but explicit calls to | |
3123 | C<can> may break this. | |
e7ea3e70 | 3124 | |
a0d0e21e LW |
3125 | =item Subroutine %s redefined |
3126 | ||
e476b1b5 | 3127 | (W redefine) You redefined a subroutine. To suppress this warning, say |
a0d0e21e LW |
3128 | |
3129 | { | |
4438c4b7 | 3130 | no warnings; |
a0d0e21e LW |
3131 | eval "sub name { ... }"; |
3132 | } | |
3133 | ||
3134 | =item Substitution loop | |
3135 | ||
be771a83 GS |
3136 | (P) The substitution was looping infinitely. (Obviously, a substitution |
3137 | shouldn't iterate more times than there are characters of input, which | |
3138 | is what happened.) See the discussion of substitution in | |
5f05dabc | 3139 | L<perlop/"Quote and Quote-like Operators">. |
a0d0e21e LW |
3140 | |
3141 | =item Substitution pattern not terminated | |
3142 | ||
3143 | (F) The lexer couldn't find the interior delimiter of a s/// or s{}{} | |
3144 | construct. Remember that bracketing delimiters count nesting level. | |
fb73857a | 3145 | Missing the leading C<$> from variable C<$s> may cause this error. |
a0d0e21e LW |
3146 | |
3147 | =item Substitution replacement not terminated | |
3148 | ||
3149 | (F) The lexer couldn't find the final delimiter of a s/// or s{}{} | |
3150 | construct. Remember that bracketing delimiters count nesting level. | |
fb73857a | 3151 | Missing the leading C<$> from variable C<$s> may cause this error. |
a0d0e21e LW |
3152 | |
3153 | =item substr outside of string | |
3154 | ||
be771a83 GS |
3155 | (W substr),(F) You tried to reference a substr() that pointed outside of |
3156 | a string. That is, the absolute value of the offset was larger than the | |
3157 | length of the string. See L<perlfunc/substr>. This warning is fatal if | |
3158 | substr is used in an lvalue context (as the left hand side of an | |
3159 | assignment or as a subroutine argument for example). | |
a0d0e21e | 3160 | |
f86702cc | 3161 | =item suidperl is no longer needed since %s |
a0d0e21e | 3162 | |
be771a83 GS |
3163 | (F) Your Perl was compiled with B<-D>SETUID_SCRIPTS_ARE_SECURE_NOW, but |
3164 | a version of the setuid emulator somehow got run anyway. | |
a0d0e21e | 3165 | |
551e1d92 | 3166 | =item Switch (?(condition)... contains too many branches before << HE%s |
b45f050a JF |
3167 | |
3168 | (F) A (?(condition)if-clause|else-clause) construct can have at most two | |
3169 | branches (the if-clause and the else-clause). If you want one or both to | |
3170 | contain alternation, such as using C<this|that|other>, enclose it in | |
3171 | clustering parentheses: | |
3172 | ||
3173 | (?(condition)(?:this|that|other)|else-clause) | |
3174 | ||
79eeca27 | 3175 | The << HERE shows in the regular expression about where the problem was |
b45f050a JF |
3176 | discovered. See L<perlre>. |
3177 | ||
79eeca27 | 3178 | =item Switch condition not recognized before << HERE in regex m/%s/ |
b45f050a JF |
3179 | |
3180 | (F) If the argument to the (?(...)if-clause|else-clause) construct is a | |
79eeca27 | 3181 | number, it can be only a number. The << HERE shows in the regular expression |
b45f050a JF |
3182 | about where the problem was discovered. See L<perlre>. |
3183 | ||
85ab1d1d JH |
3184 | =item switching effective %s is not implemented |
3185 | ||
be771a83 GS |
3186 | (F) While under the C<use filetest> pragma, we cannot switch the real |
3187 | and effective uids or gids. | |
85ab1d1d | 3188 | |
a0d0e21e LW |
3189 | =item syntax error |
3190 | ||
3191 | (F) Probably means you had a syntax error. Common reasons include: | |
3192 | ||
3193 | A keyword is misspelled. | |
3194 | A semicolon is missing. | |
3195 | A comma is missing. | |
3196 | An opening or closing parenthesis is missing. | |
3197 | An opening or closing brace is missing. | |
3198 | A closing quote is missing. | |
3199 | ||
3200 | Often there will be another error message associated with the syntax | |
3201 | error giving more information. (Sometimes it helps to turn on B<-w>.) | |
3202 | The error message itself often tells you where it was in the line when | |
3203 | it decided to give up. Sometimes the actual error is several tokens | |
5f05dabc | 3204 | before this, because Perl is good at understanding random input. |
a0d0e21e LW |
3205 | Occasionally the line number may be misleading, and once in a blue moon |
3206 | the only way to figure out what's triggering the error is to call | |
3207 | C<perl -c> repeatedly, chopping away half the program each time to see | |
be771a83 GS |
3208 | if the error went away. Sort of the cybernetic version of S<20 |
3209 | questions>. | |
a0d0e21e | 3210 | |
cb1a09d0 AD |
3211 | =item syntax error at line %d: `%s' unexpected |
3212 | ||
be771a83 GS |
3213 | (A) You've accidentally run your script through the Bourne shell instead |
3214 | of Perl. Check the #! line, or manually feed your script into Perl | |
3215 | yourself. | |
cb1a09d0 | 3216 | |
6df41af2 GS |
3217 | =item %s syntax OK |
3218 | ||
3219 | (F) The final summary message when a C<perl -c> succeeds. | |
3220 | ||
6087ac44 | 3221 | =item System V %s is not implemented on this machine |
a0d0e21e | 3222 | |
6087ac44 JH |
3223 | (F) You tried to do something with a function beginning with "sem", |
3224 | "shm", or "msg" but that System V IPC is not implemented in your | |
3225 | machine. In some machines the functionality can exist but be | |
3226 | unconfigured. Consult your system support. | |
a0d0e21e | 3227 | |
69282e91 | 3228 | =item syswrite() on closed filehandle %s |
a0d0e21e | 3229 | |
be771a83 | 3230 | (W closed) The filehandle you're writing to got itself closed sometime |
c289d2f7 | 3231 | before now. Check your control flow. |
a0d0e21e | 3232 | |
fc36a67e | 3233 | =item Target of goto is too deeply nested |
3234 | ||
be771a83 GS |
3235 | (F) You tried to use C<goto> to reach a label that was too deeply nested |
3236 | for Perl to reach. Perl is doing you a favor by refusing. | |
fc36a67e | 3237 | |
9ddeeac9 | 3238 | =item tell() on unopened filehandle |
a0d0e21e | 3239 | |
be771a83 GS |
3240 | (W unopened) You tried to use the tell() function on a filehandle that |
3241 | was either never opened or has since been closed. | |
a0d0e21e | 3242 | |
a0d0e21e LW |
3243 | =item That use of $[ is unsupported |
3244 | ||
be771a83 GS |
3245 | (F) Assignment to C<$[> is now strictly circumscribed, and interpreted |
3246 | as a compiler directive. You may say only one of | |
a0d0e21e LW |
3247 | |
3248 | $[ = 0; | |
3249 | $[ = 1; | |
3250 | ... | |
3251 | local $[ = 0; | |
3252 | local $[ = 1; | |
3253 | ... | |
3254 | ||
be771a83 GS |
3255 | This is to prevent the problem of one module changing the array base out |
3256 | from under another module inadvertently. See L<perlvar/$[>. | |
a0d0e21e | 3257 | |
f86702cc | 3258 | =item The crypt() function is unimplemented due to excessive paranoia |
a0d0e21e LW |
3259 | |
3260 | (F) Configure couldn't find the crypt() function on your machine, | |
3261 | probably because your vendor didn't supply it, probably because they | |
8b1a09fc | 3262 | think the U.S. Government thinks it's a secret, or at least that they |
a0d0e21e LW |
3263 | will continue to pretend that it is. And if you quote me on that, I |
3264 | will deny it. | |
3265 | ||
6df41af2 GS |
3266 | =item The %s function is unimplemented |
3267 | ||
3268 | The function indicated isn't implemented on this architecture, according | |
3269 | to the probings of Configure. | |
3270 | ||
5e1c7ca2 | 3271 | =item The stat preceding %s wasn't an lstat |
a0d0e21e | 3272 | |
be771a83 GS |
3273 | (F) It makes no sense to test the current stat buffer for symbolic |
3274 | linkhood if the last stat that wrote to the stat buffer already went | |
3275 | past the symlink to get to the real file. Use an actual filename | |
3276 | instead. | |
a0d0e21e | 3277 | |
437784d6 | 3278 | =item This Perl can't reset CRTL environ elements (%s) |
f675dbe5 CB |
3279 | |
3280 | =item This Perl can't set CRTL environ elements (%s=%s) | |
3281 | ||
75b44862 | 3282 | (W internal) Warnings peculiar to VMS. You tried to change or delete an |
be771a83 GS |
3283 | element of the CRTL's internal environ array, but your copy of Perl |
3284 | wasn't built with a CRTL that contained the setenv() function. You'll | |
3285 | need to rebuild Perl with a CRTL that does, or redefine | |
3286 | F<PERL_ENV_TABLES> (see L<perlvms>) so that the environ array isn't the | |
3287 | target of the change to | |
f675dbe5 CB |
3288 | %ENV which produced the warning. |
3289 | ||
a0d0e21e LW |
3290 | =item times not implemented |
3291 | ||
be771a83 GS |
3292 | (F) Your version of the C library apparently doesn't do times(). I |
3293 | suspect you're not running on Unix. | |
a0d0e21e LW |
3294 | |
3295 | =item Too few args to syscall | |
3296 | ||
3297 | (F) There has to be at least one argument to syscall() to specify the | |
3298 | system call to call, silly dilly. | |
3299 | ||
9607fc9c | 3300 | =item Too late for "B<-T>" option |
3301 | ||
3302 | (X) The #! line (or local equivalent) in a Perl script contains the | |
8cc95fdb | 3303 | B<-T> option, but Perl was not invoked with B<-T> in its command line. |
3304 | This is an error because, by the time Perl discovers a B<-T> in a | |
3305 | script, it's too late to properly taint everything from the environment. | |
3306 | So Perl gives up. | |
f86702cc | 3307 | |
9607fc9c | 3308 | If the Perl script is being executed as a command using the #! |
be771a83 GS |
3309 | mechanism (or its local equivalent), this error can usually be fixed by |
3310 | editing the #! line so that the B<-T> option is a part of Perl's first | |
3311 | argument: e.g. change C<perl -n -T> to C<perl -T -n>. | |
f86702cc | 3312 | |
9607fc9c | 3313 | If the Perl script is being executed as C<perl scriptname>, then the |
3314 | B<-T> option must appear on the command line: C<perl -T scriptname>. | |
f86702cc | 3315 | |
8cc95fdb | 3316 | =item Too late for "-%s" option |
3317 | ||
3318 | (X) The #! line (or local equivalent) in a Perl script contains the | |
3319 | B<-M> or B<-m> option. This is an error because B<-M> and B<-m> options | |
3320 | are not intended for use inside scripts. Use the C<use> pragma instead. | |
3321 | ||
ddda08b7 GS |
3322 | =item Too late to run %s block |
3323 | ||
3324 | (W void) A CHECK or INIT block is being defined during run time proper, | |
3325 | when the opportunity to run them has already passed. Perhaps you are | |
be771a83 GS |
3326 | loading a file with C<require> or C<do> when you should be using C<use> |
3327 | instead. Or perhaps you should put the C<require> or C<do> inside a | |
3328 | BEGIN block. | |
ddda08b7 | 3329 | |
a0d0e21e LW |
3330 | =item Too many args to syscall |
3331 | ||
5f05dabc | 3332 | (F) Perl supports a maximum of only 14 args to syscall(). |
a0d0e21e LW |
3333 | |
3334 | =item Too many arguments for %s | |
3335 | ||
3336 | (F) The function requires fewer arguments than you specified. | |
3337 | ||
6df41af2 GS |
3338 | =item Too many )'s |
3339 | ||
be771a83 GS |
3340 | (A) You've accidentally run your script through B<csh> instead of Perl. |
3341 | Check the #! line, or manually feed your script into Perl yourself. | |
6df41af2 GS |
3342 | |
3343 | =item Too many ('s | |
3344 | ||
a0d0e21e LW |
3345 | =item trailing \ in regexp |
3346 | ||
be771a83 GS |
3347 | (F) The regular expression ends with an unbackslashed backslash. |
3348 | Backslash it. See L<perlre>. | |
a0d0e21e | 3349 | |
2c268ad5 | 3350 | =item Transliteration pattern not terminated |
a0d0e21e LW |
3351 | |
3352 | (F) The lexer couldn't find the interior delimiter of a tr/// or tr[][] | |
fb73857a | 3353 | or y/// or y[][] construct. Missing the leading C<$> from variables |
3354 | C<$tr> or C<$y> may cause this error. | |
a0d0e21e | 3355 | |
2c268ad5 | 3356 | =item Transliteration replacement not terminated |
a0d0e21e LW |
3357 | |
3358 | (F) The lexer couldn't find the final delimiter of a tr/// or tr[][] | |
3359 | construct. | |
3360 | ||
3361 | =item truncate not implemented | |
3362 | ||
3363 | (F) Your machine doesn't implement a file truncation mechanism that | |
3364 | Configure knows about. | |
3365 | ||
3366 | =item Type of arg %d to %s must be %s (not %s) | |
3367 | ||
3368 | (F) This function requires the argument in that position to be of a | |
8b1a09fc | 3369 | certain type. Arrays must be @NAME or C<@{EXPR}>. Hashes must be |
3370 | %NAME or C<%{EXPR}>. No implicit dereferencing is allowed--use the | |
a0d0e21e LW |
3371 | {EXPR} forms as an explicit dereference. See L<perlref>. |
3372 | ||
3373 | =item umask: argument is missing initial 0 | |
3374 | ||
e476b1b5 | 3375 | (W umask) A umask of 222 is incorrect. It should be 0222, because octal |
eec2d3df GS |
3376 | literals always start with 0 in Perl, as in C. |
3377 | ||
3378 | =item umask not implemented | |
3379 | ||
be771a83 GS |
3380 | (F) Your machine doesn't implement the umask function and you tried to |
3381 | use it to restrict permissions for yourself (EXPR & 0700). | |
a0d0e21e | 3382 | |
4633a7c4 LW |
3383 | =item Unable to create sub named "%s" |
3384 | ||
3385 | (F) You attempted to create or access a subroutine with an illegal name. | |
3386 | ||
a0d0e21e LW |
3387 | =item Unbalanced context: %d more PUSHes than POPs |
3388 | ||
be771a83 GS |
3389 | (W internal) The exit code detected an internal inconsistency in how |
3390 | many execution contexts were entered and left. | |
a0d0e21e LW |
3391 | |
3392 | =item Unbalanced saves: %d more saves than restores | |
3393 | ||
be771a83 GS |
3394 | (W internal) The exit code detected an internal inconsistency in how |
3395 | many values were temporarily localized. | |
a0d0e21e LW |
3396 | |
3397 | =item Unbalanced scopes: %d more ENTERs than LEAVEs | |
3398 | ||
be771a83 GS |
3399 | (W internal) The exit code detected an internal inconsistency in how |
3400 | many blocks were entered and left. | |
a0d0e21e LW |
3401 | |
3402 | =item Unbalanced tmps: %d more allocs than frees | |
3403 | ||
be771a83 GS |
3404 | (W internal) The exit code detected an internal inconsistency in how |
3405 | many mortal scalars were allocated and freed. | |
a0d0e21e LW |
3406 | |
3407 | =item Undefined format "%s" called | |
3408 | ||
3409 | (F) The format indicated doesn't seem to exist. Perhaps it's really in | |
3410 | another package? See L<perlform>. | |
3411 | ||
3412 | =item Undefined sort subroutine "%s" called | |
3413 | ||
be771a83 GS |
3414 | (F) The sort comparison routine specified doesn't seem to exist. |
3415 | Perhaps it's in a different package? See L<perlfunc/sort>. | |
a0d0e21e LW |
3416 | |
3417 | =item Undefined subroutine &%s called | |
3418 | ||
be771a83 GS |
3419 | (F) The subroutine indicated hasn't been defined, or if it was, it has |
3420 | since been undefined. | |
a0d0e21e LW |
3421 | |
3422 | =item Undefined subroutine called | |
3423 | ||
3424 | (F) The anonymous subroutine you're trying to call hasn't been defined, | |
3425 | or if it was, it has since been undefined. | |
3426 | ||
3427 | =item Undefined subroutine in sort | |
3428 | ||
be771a83 GS |
3429 | (F) The sort comparison routine specified is declared but doesn't seem |
3430 | to have been defined yet. See L<perlfunc/sort>. | |
a0d0e21e | 3431 | |
4633a7c4 LW |
3432 | =item Undefined top format "%s" called |
3433 | ||
3434 | (F) The format indicated doesn't seem to exist. Perhaps it's really in | |
3435 | another package? See L<perlform>. | |
3436 | ||
20408e3c GS |
3437 | =item Undefined value assigned to typeglob |
3438 | ||
be771a83 GS |
3439 | (W misc) An undefined value was assigned to a typeglob, a la |
3440 | C<*foo = undef>. This does nothing. It's possible that you really mean | |
3441 | C<undef *foo>. | |
20408e3c | 3442 | |
6df41af2 GS |
3443 | =item %s: Undefined variable |
3444 | ||
be771a83 GS |
3445 | (A) You've accidentally run your script through B<csh> instead of Perl. |
3446 | Check the #! line, or manually feed your script into Perl yourself. | |
6df41af2 | 3447 | |
a0d0e21e LW |
3448 | =item unexec of %s into %s failed! |
3449 | ||
3450 | (F) The unexec() routine failed for some reason. See your local FSF | |
3451 | representative, who probably put it there in the first place. | |
3452 | ||
b45f050a | 3453 | |
a0d0e21e LW |
3454 | =item Unknown BYTEORDER |
3455 | ||
be771a83 GS |
3456 | (F) There are no byte-swapping functions for a machine with this byte |
3457 | order. | |
a0d0e21e | 3458 | |
79eeca27 | 3459 | =item Unknown switch condition (?(%.2s before << HERE in regex m/%s/ |
b45f050a JF |
3460 | |
3461 | (F) The condition of a (?(condition)if-clause|else-clause) construct is not | |
3462 | known. The condition may be lookaround (the condition is true if the | |
3463 | lookaround is true), a (?{...}) construct (the condition is true if the | |
3464 | code evaluates to a true value), or a number (the condition is true if the | |
3465 | set of capturing parentheses named by the number is defined). | |
3466 | ||
79eeca27 | 3467 | The << HERE shows in the regular expression about where the problem was |
b45f050a JF |
3468 | discovered. See L<perlre>. |
3469 | ||
6170680b IZ |
3470 | =item Unknown open() mode '%s' |
3471 | ||
437784d6 | 3472 | (F) The second argument of 3-argument open() is not among the list |
c47ff5f1 GS |
3473 | of valid modes: C<< < >>, C<< > >>, C<<< >> >>>, C<< +< >>, |
3474 | C<< +> >>, C<<< +>> >>>, C<-|>, C<|->. | |
6170680b | 3475 | |
f675dbe5 CB |
3476 | =item Unknown process %x sent message to prime_env_iter: %s |
3477 | ||
3478 | (P) An error peculiar to VMS. Perl was reading values for %ENV before | |
3479 | iterating over it, and someone else stuck a message in the stream of | |
3480 | data Perl expected. Someone's very confused, or perhaps trying to | |
3481 | subvert Perl's population of %ENV for nefarious purposes. | |
3482 | ||
79eeca27 | 3483 | =item unmatched [ before << HERE mark in regex m/%s/ |
6df41af2 | 3484 | |
380a0633 | 3485 | (F) The brackets around a character class must match. If you wish to |
be771a83 | 3486 | include a closing bracket in a character class, backslash it or put it |
79eeca27 | 3487 | first. See L<perlre>. The << HERE shows in the regular expression about |
380a0633 | 3488 | where the escape was discovered. |
6df41af2 | 3489 | |
79eeca27 | 3490 | =item unmatched ( in regexp before << HERE mark in regex m/%s/ |
a0d0e21e LW |
3491 | |
3492 | (F) Unbackslashed parentheses must always be balanced in regular | |
be771a83 GS |
3493 | expressions. If you're a vi user, the % key is valuable for finding the |
3494 | matching parenthesis. See L<perlre>. | |
a0d0e21e | 3495 | |
d98d5fff | 3496 | =item Unmatched right %s bracket |
a0d0e21e | 3497 | |
be771a83 GS |
3498 | (F) The lexer counted more closing curly or square brackets than opening |
3499 | ones, so you're probably missing a matching opening bracket. As a | |
3500 | general rule, you'll find the missing one (so to speak) near the place | |
3501 | you were last editing. | |
a0d0e21e | 3502 | |
a0d0e21e LW |
3503 | =item Unquoted string "%s" may clash with future reserved word |
3504 | ||
be771a83 GS |
3505 | (W reserved) You used a bareword that might someday be claimed as a |
3506 | reserved word. It's best to put such a word in quotes, or capitalize it | |
3507 | somehow, or insert an underbar into it. You might also declare it as a | |
3508 | subroutine. | |
a0d0e21e | 3509 | |
54310121 | 3510 | =item Unrecognized character %s |
a0d0e21e | 3511 | |
54310121 | 3512 | (F) The Perl parser has no idea what to do with the specified character |
3513 | in your Perl script (or eval). Perhaps you tried to run a compressed | |
3514 | script, a binary program, or a directory as a Perl program. | |
a0d0e21e | 3515 | |
6df41af2 GS |
3516 | =item /%s/: Unrecognized escape \\%c in character class passed through |
3517 | ||
be771a83 GS |
3518 | (W regexp) You used a backslash-character combination which is not |
3519 | recognized by Perl inside character classes. The character was | |
3520 | understood literally. | |
6df41af2 | 3521 | |
79eeca27 | 3522 | =item Unrecognized escape \\%c passed through before << HERE in m/%s/ |
6df41af2 | 3523 | |
be771a83 | 3524 | (W regexp) You used a backslash-character combination which is not |
b45f050a JF |
3525 | recognized by Perl. This combination appears in an interpolated variable or |
3526 | a C<'>-delimited regular expression. The character was understood | |
79eeca27 | 3527 | literally. The << HERE shows in the regular expression about where the escape |
b45f050a JF |
3528 | was discovered. |
3529 | ||
6df41af2 | 3530 | |
c9f97d15 IZ |
3531 | =item Unrecognized escape \\%c passed through |
3532 | ||
be771a83 GS |
3533 | (W misc) You used a backslash-character combination which is not |
3534 | recognized by Perl. | |
c9f97d15 | 3535 | |
a0d0e21e LW |
3536 | =item Unrecognized signal name "%s" |
3537 | ||
be771a83 GS |
3538 | (F) You specified a signal name to the kill() function that was not |
3539 | recognized. Say C<kill -l> in your shell to see the valid signal names | |
3540 | on your system. | |
a0d0e21e | 3541 | |
90248788 | 3542 | =item Unrecognized switch: -%s (-h will show valid options) |
a0d0e21e | 3543 | |
be771a83 GS |
3544 | (F) You specified an illegal option to Perl. Don't do that. (If you |
3545 | think you didn't do that, check the #! line to see if it's supplying the | |
3546 | bad switch on your behalf.) | |
a0d0e21e LW |
3547 | |
3548 | =item Unsuccessful %s on filename containing newline | |
3549 | ||
be771a83 GS |
3550 | (W newline) A file operation was attempted on a filename, and that |
3551 | operation failed, PROBABLY because the filename contained a newline, | |
3552 | PROBABLY because you forgot to chop() or chomp() it off. See | |
3553 | L<perlfunc/chomp>. | |
a0d0e21e LW |
3554 | |
3555 | =item Unsupported directory function "%s" called | |
3556 | ||
3557 | (F) Your machine doesn't support opendir() and readdir(). | |
3558 | ||
6df41af2 GS |
3559 | =item Unsupported function %s |
3560 | ||
3561 | (F) This machine doesn't implement the indicated function, apparently. | |
3562 | At least, Configure doesn't think so. | |
3563 | ||
54310121 | 3564 | =item Unsupported function fork |
3565 | ||
3566 | (F) Your version of executable does not support forking. | |
3567 | ||
be771a83 GS |
3568 | Note that under some systems, like OS/2, there may be different flavors |
3569 | of Perl executables, some of which may support fork, some not. Try | |
3570 | changing the name you call Perl by to C<perl_>, C<perl__>, and so on. | |
54310121 | 3571 | |
b250498f GS |
3572 | =item Unsupported script encoding |
3573 | ||
3574 | (F) Your program file begins with a Unicode Byte Order Mark (BOM) which | |
3575 | declares it to be in a Unicode encoding that Perl cannot yet read. | |
3576 | ||
a0d0e21e LW |
3577 | =item Unsupported socket function "%s" called |
3578 | ||
3579 | (F) Your machine doesn't support the Berkeley socket mechanism, or at | |
3580 | least that's what Configure thought. | |
3581 | ||
6df41af2 | 3582 | =item Unterminated attribute list |
a0d0e21e | 3583 | |
be771a83 GS |
3584 | (F) The lexer found something other than a simple identifier at the |
3585 | start of an attribute, and it wasn't a semicolon or the start of a | |
3586 | block. Perhaps you terminated the parameter list of the previous | |
3587 | attribute too soon. See L<attributes>. | |
a0d0e21e | 3588 | |
09bef843 SB |
3589 | =item Unterminated attribute parameter in attribute list |
3590 | ||
be771a83 GS |
3591 | (F) The lexer saw an opening (left) parenthesis character while parsing |
3592 | an attribute list, but the matching closing (right) parenthesis | |
09bef843 SB |
3593 | character was not found. You may need to add (or remove) a backslash |
3594 | character to get your parentheses to balance. See L<attributes>. | |
3595 | ||
f1991046 GS |
3596 | =item Unterminated compressed integer |
3597 | ||
3598 | (F) An argument to unpack("w",...) was incompatible with the BER | |
3599 | compressed integer format and could not be converted to an integer. | |
3600 | See L<perlfunc/pack>. | |
3601 | ||
6df41af2 | 3602 | =item Unterminated <> operator |
09bef843 | 3603 | |
6df41af2 | 3604 | (F) The lexer saw a left angle bracket in a place where it was expecting |
be771a83 GS |
3605 | a term, so it's looking for the corresponding right angle bracket, and |
3606 | not finding it. Chances are you left some needed parentheses out | |
3607 | earlier in the line, and you really meant a "less than". | |
09bef843 | 3608 | |
6df41af2 | 3609 | =item untie attempted while %d inner references still exist |
a0d0e21e | 3610 | |
be771a83 GS |
3611 | (W untie) A copy of the object returned from C<tie> (or C<tied>) was |
3612 | still valid when C<untie> was called. | |
a0d0e21e | 3613 | |
6df41af2 | 3614 | =item Useless use of %s in void context |
a0d0e21e | 3615 | |
75b44862 | 3616 | (W void) You did something without a side effect in a context that does |
be771a83 GS |
3617 | nothing with the return value, such as a statement that doesn't return a |
3618 | value from a block, or the left side of a scalar comma operator. Very | |
3619 | often this points not to stupidity on your part, but a failure of Perl | |
3620 | to parse your program the way you thought it would. For example, you'd | |
3621 | get this if you mixed up your C precedence with Python precedence and | |
3622 | said | |
a0d0e21e | 3623 | |
6df41af2 | 3624 | $one, $two = 1, 2; |
748a9306 | 3625 | |
6df41af2 GS |
3626 | when you meant to say |
3627 | ||
3628 | ($one, $two) = (1, 2); | |
3629 | ||
3630 | Another common error is to use ordinary parentheses to construct a list | |
3631 | reference when you should be using square or curly brackets, for | |
3632 | example, if you say | |
3633 | ||
3634 | $array = (1,2); | |
3635 | ||
3636 | when you should have said | |
3637 | ||
3638 | $array = [1,2]; | |
3639 | ||
3640 | The square brackets explicitly turn a list value into a scalar value, | |
3641 | while parentheses do not. So when a parenthesized list is evaluated in | |
3642 | a scalar context, the comma is treated like C's comma operator, which | |
3643 | throws away the left argument, which is not what you want. See | |
3644 | L<perlref> for more on this. | |
3645 | ||
3646 | =item Useless use of "re" pragma | |
3647 | ||
3648 | (W) You did C<use re;> without any arguments. That isn't very useful. | |
3649 | ||
3650 | =item "use" not allowed in expression | |
3651 | ||
be771a83 GS |
3652 | (F) The "use" keyword is recognized and executed at compile time, and |
3653 | returns no useful value. See L<perlmod>. | |
748a9306 | 3654 | |
c47ff5f1 | 3655 | =item Use of bare << to mean <<"" is deprecated |
4633a7c4 | 3656 | |
be771a83 GS |
3657 | (D deprecated) You are now encouraged to use the explicitly quoted form |
3658 | if you wish to use an empty line as the terminator of the here-document. | |
4633a7c4 | 3659 | |
a0d0e21e LW |
3660 | =item Use of implicit split to @_ is deprecated |
3661 | ||
be771a83 GS |
3662 | (D deprecated) It makes a lot of work for the compiler when you clobber |
3663 | a subroutine's argument list, so it's better if you assign the results | |
3664 | of a split() explicitly to an array (or list). | |
a0d0e21e | 3665 | |
dc848c6f | 3666 | =item Use of inherited AUTOLOAD for non-method %s() is deprecated |
3667 | ||
be771a83 GS |
3668 | (D deprecated) As an (ahem) accidental feature, C<AUTOLOAD> subroutines |
3669 | are looked up as methods (using the C<@ISA> hierarchy) even when the | |
3670 | subroutines to be autoloaded were called as plain functions (e.g. | |
3671 | C<Foo::bar()>), not as methods (e.g. C<< Foo->bar() >> or C<< | |
3672 | $obj->bar() >>). | |
dc848c6f | 3673 | |
be771a83 GS |
3674 | This bug will be rectified in future by using method lookup only for |
3675 | methods' C<AUTOLOAD>s. However, there is a significant base of existing | |
3676 | code that may be using the old behavior. So, as an interim step, Perl | |
3677 | currently issues an optional warning when non-methods use inherited | |
3678 | C<AUTOLOAD>s. | |
dc848c6f | 3679 | |
3680 | The simple rule is: Inheritance will not work when autoloading | |
be771a83 GS |
3681 | non-methods. The simple fix for old code is: In any module that used |
3682 | to depend on inheriting C<AUTOLOAD> for non-methods from a base class | |
3683 | named C<BaseClass>, execute C<*AUTOLOAD = \&BaseClass::AUTOLOAD> during | |
3684 | startup. | |
dc848c6f | 3685 | |
be771a83 GS |
3686 | In code that currently says C<use AutoLoader; @ISA = qw(AutoLoader);> |
3687 | you should remove AutoLoader from @ISA and change C<use AutoLoader;> to | |
7b8d334a | 3688 | C<use AutoLoader 'AUTOLOAD';>. |
fb73857a | 3689 | |
6df41af2 GS |
3690 | =item Use of %s in printf format not supported |
3691 | ||
3692 | (F) You attempted to use a feature of printf that is accessible from | |
3693 | only C. This usually means there's a better way to do it in Perl. | |
3694 | ||
3695 | =item Use of $* is deprecated | |
3696 | ||
be771a83 GS |
3697 | (D deprecated) This variable magically turned on multi-line pattern |
3698 | matching, both for you and for any luckless subroutine that you happen | |
3699 | to call. You should use the new C<//m> and C<//s> modifiers now to do | |
3700 | that without the dangerous action-at-a-distance effects of C<$*>. | |
6df41af2 GS |
3701 | |
3702 | =item Use of %s is deprecated | |
3703 | ||
75b44862 | 3704 | (D deprecated) The construct indicated is no longer recommended for use, |
be771a83 GS |
3705 | generally because there's a better way to do it, and also because the |
3706 | old way has bad side effects. | |
6df41af2 GS |
3707 | |
3708 | =item Use of $# is deprecated | |
3709 | ||
be771a83 GS |
3710 | (D deprecated) This was an ill-advised attempt to emulate a poorly |
3711 | defined B<awk> feature. Use an explicit printf() or sprintf() instead. | |
6df41af2 | 3712 | |
d804643f SC |
3713 | =item Use of reference "%s" in array index |
3714 | ||
3715 | (W) You tried to use a reference as an array index; this probably | |
3716 | isn't what you mean, because references tend to be huge numbers which | |
3717 | take you out of memory, and so usually indicates programmer error. | |
3718 | ||
3719 | If you really do mean it, explicitly numify your reference, like so: | |
3720 | C<$array[0+$ref]> | |
3721 | ||
85b81015 LW |
3722 | =item Use of reserved word "%s" is deprecated |
3723 | ||
be771a83 GS |
3724 | (D deprecated) The indicated bareword is a reserved word. Future |
3725 | versions of perl may use it as a keyword, so you're better off either | |
3726 | explicitly quoting the word in a manner appropriate for its context of | |
3727 | use, or using a different name altogether. The warning can be | |
3728 | suppressed for subroutine names by either adding a C<&> prefix, or using | |
3729 | a package qualifier, e.g. C<&our()>, or C<Foo::our()>. | |
85b81015 | 3730 | |
cc95b072 | 3731 | =item Use of uninitialized value%s |
a0d0e21e | 3732 | |
be771a83 GS |
3733 | (W uninitialized) An undefined value was used as if it were already |
3734 | defined. It was interpreted as a "" or a 0, but maybe it was a mistake. | |
3735 | To suppress this warning assign a defined value to your variables. | |
a0d0e21e | 3736 | |
e5be4a53 GS |
3737 | To help you figure out what was undefined, perl tells you what operation |
3738 | you used the undefined value in. Note, however, that perl optimizes your | |
3739 | program and the operation displayed in the warning may not necessarily | |
3740 | appear literally in your program. For example, C<"that $foo"> is | |
3741 | usually optimized into C<"that " . $foo>, and the warning will refer to | |
3742 | the C<concatenation (.)> operator, even though there is no C<.> in your | |
3743 | program. | |
3744 | ||
68dc0745 | 3745 | =item Value of %s can be "0"; test with defined() |
a6006777 | 3746 | |
75b44862 | 3747 | (W misc) In a conditional expression, you used <HANDLE>, <*> (glob), |
be771a83 GS |
3748 | C<each()>, or C<readdir()> as a boolean value. Each of these constructs |
3749 | can return a value of "0"; that would make the conditional expression | |
3750 | false, which is probably not what you intended. When using these | |
3751 | constructs in conditional expressions, test their values with the | |
3752 | C<defined> operator. | |
a6006777 | 3753 | |
f675dbe5 CB |
3754 | =item Value of CLI symbol "%s" too long |
3755 | ||
be771a83 GS |
3756 | (W misc) A warning peculiar to VMS. Perl tried to read the value of an |
3757 | %ENV element from a CLI symbol table, and found a resultant string | |
3758 | longer than 1024 characters. The return value has been truncated to | |
3759 | 1024 characters. | |
f675dbe5 | 3760 | |
9607fc9c | 3761 | =item Variable "%s" is not imported%s |
4633a7c4 | 3762 | |
be771a83 GS |
3763 | (F) While "use strict" in effect, you referred to a global variable that |
3764 | you apparently thought was imported from another module, because | |
3765 | something else of the same name (usually a subroutine) is exported by | |
3766 | that module. It usually means you put the wrong funny character on the | |
3767 | front of your variable. | |
4633a7c4 | 3768 | |
6df41af2 GS |
3769 | =item "%s" variable %s masks earlier declaration in same %s |
3770 | ||
be771a83 GS |
3771 | (W misc) A "my" or "our" variable has been redeclared in the current |
3772 | scope or statement, effectively eliminating all access to the previous | |
3773 | instance. This is almost always a typographical error. Note that the | |
3774 | earlier variable will still exist until the end of the scope or until | |
3775 | all closure referents to it are destroyed. | |
6df41af2 | 3776 | |
44a8e56a | 3777 | =item Variable "%s" may be unavailable |
3778 | ||
be771a83 GS |
3779 | (W closure) An inner (nested) I<anonymous> subroutine is inside a |
3780 | I<named> subroutine, and outside that is another subroutine; and the | |
3781 | anonymous (innermost) subroutine is referencing a lexical variable | |
3782 | defined in the outermost subroutine. For example: | |
44a8e56a | 3783 | |
3784 | sub outermost { my $a; sub middle { sub { $a } } } | |
3785 | ||
3786 | If the anonymous subroutine is called or referenced (directly or | |
be771a83 GS |
3787 | indirectly) from the outermost subroutine, it will share the variable as |
3788 | you would expect. But if the anonymous subroutine is called or | |
3789 | referenced when the outermost subroutine is not active, it will see the | |
3790 | value of the shared variable as it was before and during the *first* | |
3791 | call to the outermost subroutine, which is probably not what you want. | |
3792 | ||
3793 | In these circumstances, it is usually best to make the middle subroutine | |
3794 | anonymous, using the C<sub {}> syntax. Perl has specific support for | |
3795 | shared variables in nested anonymous subroutines; a named subroutine in | |
3796 | between interferes with this feature. | |
44a8e56a | 3797 | |
6df41af2 GS |
3798 | =item Variable syntax |
3799 | ||
3800 | (A) You've accidentally run your script through B<csh> instead | |
3801 | of Perl. Check the #! line, or manually feed your script into | |
3802 | Perl yourself. | |
3803 | ||
44a8e56a | 3804 | =item Variable "%s" will not stay shared |
3805 | ||
be771a83 GS |
3806 | (W closure) An inner (nested) I<named> subroutine is referencing a |
3807 | lexical variable defined in an outer subroutine. | |
44a8e56a | 3808 | |
3809 | When the inner subroutine is called, it will probably see the value of | |
be771a83 GS |
3810 | the outer subroutine's variable as it was before and during the *first* |
3811 | call to the outer subroutine; in this case, after the first call to the | |
3812 | outer subroutine is complete, the inner and outer subroutines will no | |
3813 | longer share a common value for the variable. In other words, the | |
3814 | variable will no longer be shared. | |
44a8e56a | 3815 | |
3816 | Furthermore, if the outer subroutine is anonymous and references a | |
3817 | lexical variable outside itself, then the outer and inner subroutines | |
3818 | will I<never> share the given variable. | |
3819 | ||
3820 | This problem can usually be solved by making the inner subroutine | |
3821 | anonymous, using the C<sub {}> syntax. When inner anonymous subs that | |
be771a83 GS |
3822 | reference variables in outer subroutines are called or referenced, they |
3823 | are automatically rebound to the current values of such variables. | |
44a8e56a | 3824 | |
551e1d92 | 3825 | =item Variable length lookbehind not implemented before << HERE in %s |
b45f050a JF |
3826 | |
3827 | (F) Lookbehind is allowed only for subexpressions whose length is fixed and | |
79eeca27 | 3828 | known at compile time. The << HERE shows in the regular expression about where |
b45f050a JF |
3829 | the problem was discovered. |
3830 | ||
084610c0 GS |
3831 | =item Version number must be a constant number |
3832 | ||
3833 | (P) The attempt to translate a C<use Module n.n LIST> statement into | |
3834 | its equivalent C<BEGIN> block found an internal inconsistency with | |
3835 | the version number. | |
3836 | ||
7e1af8bc | 3837 | =item Warning: something's wrong |
5f05dabc | 3838 | |
3839 | (W) You passed warn() an empty string (the equivalent of C<warn "">) or | |
3840 | you called it with no args and C<$_> was empty. | |
3841 | ||
f86702cc | 3842 | =item Warning: unable to close filehandle %s properly |
a0d0e21e | 3843 | |
be771a83 GS |
3844 | (S) The implicit close() done by an open() got an error indication on |
3845 | the close(). This usually indicates your file system ran out of disk | |
3846 | space. | |
a0d0e21e | 3847 | |
5f05dabc | 3848 | =item Warning: Use of "%s" without parentheses is ambiguous |
a0d0e21e | 3849 | |
be771a83 GS |
3850 | (S ambiguous) You wrote a unary operator followed by something that |
3851 | looks like a binary operator that could also have been interpreted as a | |
3852 | term or unary operator. For instance, if you know that the rand | |
3853 | function has a default argument of 1.0, and you write | |
a0d0e21e LW |
3854 | |
3855 | rand + 5; | |
3856 | ||
3857 | you may THINK you wrote the same thing as | |
3858 | ||
3859 | rand() + 5; | |
3860 | ||
3861 | but in actual fact, you got | |
3862 | ||
3863 | rand(+5); | |
3864 | ||
5f05dabc | 3865 | So put in parentheses to say what you really mean. |
a0d0e21e | 3866 | |
4b3603a4 JH |
3867 | =item Wide character in %s |
3868 | ||
3869 | (F) Perl met a wide character (>255) when it wasn't expecting one. | |
3870 | ||
9a7dcd9c | 3871 | =item write() on closed filehandle %s |
a0d0e21e | 3872 | |
be771a83 | 3873 | (W closed) The filehandle you're writing to got itself closed sometime |
c289d2f7 | 3874 | before now. Check your control flow. |
a0d0e21e LW |
3875 | |
3876 | =item X outside of string | |
3877 | ||
3878 | (F) You had a pack template that specified a relative position before | |
3879 | the beginning of the string being unpacked. See L<perlfunc/pack>. | |
3880 | ||
3881 | =item x outside of string | |
3882 | ||
3883 | (F) You had a pack template that specified a relative position after | |
3884 | the end of the string being unpacked. See L<perlfunc/pack>. | |
3885 | ||
3886 | =item Xsub "%s" called in sort | |
3887 | ||
be771a83 GS |
3888 | (F) The use of an external subroutine as a sort comparison is not yet |
3889 | supported. | |
a0d0e21e LW |
3890 | |
3891 | =item Xsub called in sort | |
3892 | ||
be771a83 GS |
3893 | (F) The use of an external subroutine as a sort comparison is not yet |
3894 | supported. | |
a0d0e21e LW |
3895 | |
3896 | =item You can't use C<-l> on a filehandle | |
3897 | ||
be771a83 GS |
3898 | (F) A filehandle represents an opened file, and when you opened the file |
3899 | it already went past any symlink you are presumably trying to look for. | |
a0d0e21e LW |
3900 | Use a filename instead. |
3901 | ||
3902 | =item YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET! | |
3903 | ||
5f05dabc | 3904 | (F) And you probably never will, because you probably don't have the |
a0d0e21e | 3905 | sources to your kernel, and your vendor probably doesn't give a rip |
be771a83 GS |
3906 | about what you want. Your best bet is to use the wrapsuid script in the |
3907 | eg directory to put a setuid C wrapper around your script. | |
a0d0e21e LW |
3908 | |
3909 | =item You need to quote "%s" | |
3910 | ||
be771a83 GS |
3911 | (W syntax) You assigned a bareword as a signal handler name. |
3912 | Unfortunately, you already have a subroutine of that name declared, | |
3913 | which means that Perl 5 will try to call the subroutine when the | |
3914 | assignment is executed, which is probably not what you want. (If it IS | |
3915 | what you want, put an & in front.) | |
a0d0e21e | 3916 | |
a0d0e21e LW |
3917 | =back |
3918 | ||
56e90b21 | 3919 | =cut |