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1 | =head1 NAME |
2 | |
3 | perldiag - various Perl diagnostics |
4 | |
5 | =head1 DESCRIPTION |
6 | |
7 | These messages are classified as follows (listed in increasing order of |
8 | desperation): |
9 | |
10 | (W) A warning (optional). |
11 | (D) A deprecation (optional). |
12 | (S) A severe warning (mandatory). |
13 | (F) A fatal error (trappable). |
14 | (P) An internal error you should never see (trappable). |
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15 | (X) A very fatal error (nontrappable). |
cb1a09d0 |
16 | (A) An alien error message (not generated by Perl). |
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17 | |
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18 | Optional warnings are enabled by using the B<-w> switch. Warnings may |
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19 | be captured by setting C<$SIG{__WARN__}> to a reference to a routine that |
20 | will be called on each warning instead of printing it. See L<perlvar>. |
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21 | Trappable errors may be trapped using the eval operator. See |
22 | L<perlfunc/eval>. |
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23 | |
24 | Some of these messages are generic. Spots that vary are denoted with a %s, |
2ba9eb46 |
25 | just as in a printf format. Note that some messages start with a %s! |
702d120d |
26 | The symbols C<"%(-?@> sort before the letters, while C<[> and C<\> sort after. |
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27 | |
28 | =over 4 |
29 | |
30 | =item "my" variable %s can't be in a package |
31 | |
32 | (F) Lexically scoped variables aren't in a package, so it doesn't make sense |
33 | to try to declare one with a package qualifier on the front. Use local() |
34 | if you want to localize a package variable. |
35 | |
2ba9eb46 |
36 | =item "my" variable %s masks earlier declaration in same scope |
37 | |
fb73857a |
38 | (W) A lexical variable has been redeclared in the same scope, effectively |
2ba9eb46 |
39 | eliminating all access to the previous instance. This is almost always |
8b1a09fc |
40 | a typographical error. Note that the earlier variable will still exist |
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41 | until the end of the scope or until all closure referents to it are |
42 | destroyed. |
43 | |
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44 | =item "no" not allowed in expression |
45 | |
46 | (F) The "no" keyword is recognized and executed at compile time, and returns |
47 | no useful value. See L<perlmod>. |
48 | |
49 | =item "use" not allowed in expression |
50 | |
51 | (F) The "use" keyword is recognized and executed at compile time, and returns |
52 | no useful value. See L<perlmod>. |
53 | |
54 | =item % may only be used in unpack |
55 | |
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56 | (F) You can't pack a string by supplying a checksum, because the |
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57 | checksumming process loses information, and you can't go the other |
58 | way. See L<perlfunc/unpack>. |
59 | |
60 | =item %s (...) interpreted as function |
61 | |
62 | (W) You've run afoul of the rule that says that any list operator followed |
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63 | by parentheses turns into a function, with all the list operators arguments |
5f05dabc |
64 | found inside the parentheses. See L<perlop/Terms and List Operators (Leftward)>. |
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65 | |
66 | =item %s argument is not a HASH element |
67 | |
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68 | (F) The argument to exists() must be a hash element, such as |
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69 | |
70 | $foo{$bar} |
71 | $ref->[12]->{"susie"} |
72 | |
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73 | =item %s argument is not a HASH element or slice |
74 | |
75 | (F) The argument to delete() must be either a hash element, such as |
76 | |
77 | $foo{$bar} |
78 | $ref->[12]->{"susie"} |
79 | |
80 | or a hash slice, such as |
81 | |
82 | @foo{$bar, $baz, $xyzzy} |
83 | @{$ref->[12]}{"susie", "queue"} |
84 | |
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85 | =item %s did not return a true value |
86 | |
87 | (F) A required (or used) file must return a true value to indicate that |
88 | it compiled correctly and ran its initialization code correctly. It's |
89 | traditional to end such a file with a "1;", though any true value would |
90 | do. See L<perlfunc/require>. |
91 | |
92 | =item %s found where operator expected |
93 | |
94 | (S) The Perl lexer knows whether to expect a term or an operator. If it |
95 | sees what it knows to be a term when it was expecting to see an operator, |
96 | it gives you this warning. Usually it indicates that an operator or |
97 | delimiter was omitted, such as a semicolon. |
98 | |
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99 | =item %s had compilation errors |
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100 | |
101 | (F) The final summary message when a C<perl -c> fails. |
102 | |
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103 | =item %s has too many errors |
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104 | |
105 | (F) The parser has given up trying to parse the program after 10 errors. |
106 | Further error messages would likely be uninformative. |
107 | |
108 | =item %s matches null string many times |
109 | |
110 | (W) The pattern you've specified would be an infinite loop if the |
111 | regular expression engine didn't specifically check for that. See L<perlre>. |
112 | |
113 | =item %s never introduced |
114 | |
115 | (S) The symbol in question was declared but somehow went out of scope |
116 | before it could possibly have been used. |
117 | |
118 | =item %s syntax OK |
119 | |
120 | (F) The final summary message when a C<perl -c> succeeds. |
121 | |
f86702cc |
122 | =item %s: Command not found |
cb1a09d0 |
123 | |
124 | (A) You've accidentally run your script through B<csh> instead |
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125 | of Perl. Check the #! line, or manually feed your script into |
126 | Perl yourself. |
cb1a09d0 |
127 | |
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128 | =item %s: Expression syntax |
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129 | |
130 | (A) You've accidentally run your script through B<csh> instead |
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131 | of Perl. Check the #! line, or manually feed your script into |
132 | Perl yourself. |
cb1a09d0 |
133 | |
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134 | =item %s: Undefined variable |
cb1a09d0 |
135 | |
136 | (A) You've accidentally run your script through B<csh> instead |
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137 | of Perl. Check the #! line, or manually feed your script into |
138 | Perl yourself. |
cb1a09d0 |
139 | |
140 | =item %s: not found |
141 | |
8b1a09fc |
142 | (A) You've accidentally run your script through the Bourne shell |
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143 | instead of Perl. Check the #! line, or manually feed your script |
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144 | into Perl yourself. |
145 | |
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146 | =item (Missing semicolon on previous line?) |
147 | |
148 | (S) This is an educated guess made in conjunction with the message "%s |
149 | found where operator expected". Don't automatically put a semicolon on |
150 | the previous line just because you saw this message. |
151 | |
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152 | =item B<-P> not allowed for setuid/setgid script |
153 | |
154 | (F) The script would have to be opened by the C preprocessor by name, |
155 | which provides a race condition that breaks security. |
156 | |
157 | =item C<-T> and C<-B> not implemented on filehandles |
158 | |
159 | (F) Perl can't peek at the stdio buffer of filehandles when it doesn't |
160 | know about your kind of stdio. You'll have to use a filename instead. |
161 | |
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162 | =item C<-p> destination: %s |
163 | |
164 | (F) An error occurred during the implicit output invoked by the C<-p> |
165 | command-line switch. (This output goes to STDOUT unless you've |
166 | redirected it with select().) |
167 | |
a5f75d66 |
168 | =item 500 Server error |
169 | |
170 | See Server error. |
171 | |
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172 | =item ?+* follows nothing in regexp |
173 | |
174 | (F) You started a regular expression with a quantifier. Backslash it |
175 | if you meant it literally. See L<perlre>. |
176 | |
177 | =item @ outside of string |
178 | |
2ba9eb46 |
179 | (F) You had a pack template that specified an absolute position outside |
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180 | the string being unpacked. See L<perlfunc/pack>. |
181 | |
182 | =item accept() on closed fd |
183 | |
184 | (W) You tried to do an accept on a closed socket. Did you forget to check |
185 | the return value of your socket() call? See L<perlfunc/accept>. |
186 | |
187 | =item Allocation too large: %lx |
188 | |
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189 | (X) You can't allocate more than 64K on an MS-DOS machine. |
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190 | |
191 | =item Allocation too large |
192 | |
193 | (F) You can't allocate more than 2^31+"small amount" bytes. |
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194 | |
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195 | =item Applying %s to %s will act on scalar(%s) |
196 | |
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197 | (W) The pattern match (//), substitution (s///), and transliteration (tr///) |
2ae324a7 |
198 | operators work on scalar values. If you apply one of them to an array |
199 | or a hash, it will convert the array or hash to a scalar value -- the |
200 | length of an array, or the population info of a hash -- and then work on |
201 | that scalar value. This is probably not what you meant to do. See |
202 | L<perlfunc/grep> and L<perlfunc/map> for alternatives. |
203 | |
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204 | =item Arg too short for msgsnd |
205 | |
206 | (F) msgsnd() requires a string at least as long as sizeof(long). |
207 | |
748a9306 |
208 | =item Ambiguous use of %s resolved as %s |
209 | |
210 | (W)(S) You said something that may not be interpreted the way |
211 | you thought. Normally it's pretty easy to disambiguate it by supplying |
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212 | a missing quote, operator, parenthesis pair or declaration. |
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213 | |
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214 | =item Args must match #! line |
215 | |
216 | (F) The setuid emulator requires that the arguments Perl was invoked |
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217 | with match the arguments specified on the #! line. Since some systems |
218 | impose a one-argument limit on the #! line, try combining switches; |
219 | for example, turn C<-w -U> into C<-wU>. |
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220 | |
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221 | =item Argument "%s" isn't numeric%s |
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222 | |
223 | (W) The indicated string was fed as an argument to an operator that |
224 | expected a numeric value instead. If you're fortunate the message |
225 | will identify which operator was so unfortunate. |
226 | |
227 | =item Array @%s missing the @ in argument %d of %s() |
228 | |
229 | (D) Really old Perl let you omit the @ on array names in some spots. This |
230 | is now heavily deprecated. |
231 | |
232 | =item assertion botched: %s |
233 | |
234 | (P) The malloc package that comes with Perl had an internal failure. |
235 | |
236 | =item Assertion failed: file "%s" |
237 | |
238 | (P) A general assertion failed. The file in question must be examined. |
239 | |
240 | =item Assignment to both a list and a scalar |
241 | |
242 | (F) If you assign to a conditional operator, the 2nd and 3rd arguments |
243 | must either both be scalars or both be lists. Otherwise Perl won't |
244 | know which context to supply to the right side. |
245 | |
246 | =item Attempt to free non-arena SV: 0x%lx |
247 | |
248 | (P) All SV objects are supposed to be allocated from arenas that will |
249 | be garbage collected on exit. An SV was discovered to be outside any |
250 | of those arenas. |
251 | |
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252 | =item Attempt to free nonexistent shared string |
bbce6d69 |
253 | |
254 | (P) Perl maintains a reference counted internal table of strings to |
255 | optimize the storage and access of hash keys and other strings. This |
256 | indicates someone tried to decrement the reference count of a string |
257 | that can no longer be found in the table. |
258 | |
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259 | =item Attempt to free temp prematurely |
260 | |
261 | (W) Mortalized values are supposed to be freed by the free_tmps() |
262 | routine. This indicates that something else is freeing the SV before |
263 | the free_tmps() routine gets a chance, which means that the free_tmps() |
264 | routine will be freeing an unreferenced scalar when it does try to free |
265 | it. |
266 | |
267 | =item Attempt to free unreferenced glob pointers |
268 | |
269 | (P) The reference counts got screwed up on symbol aliases. |
270 | |
271 | =item Attempt to free unreferenced scalar |
272 | |
273 | (W) Perl went to decrement the reference count of a scalar to see if it |
274 | would go to 0, and discovered that it had already gone to 0 earlier, |
275 | and should have been freed, and in fact, probably was freed. This |
276 | could indicate that SvREFCNT_dec() was called too many times, or that |
277 | SvREFCNT_inc() was called too few times, or that the SV was mortalized |
278 | when it shouldn't have been, or that memory has been corrupted. |
279 | |
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280 | =item Attempt to pack pointer to temporary value |
281 | |
282 | (W) You tried to pass a temporary value (like the result of a |
283 | function, or a computed expression) to the "p" pack() template. This |
284 | means the result contains a pointer to a location that could become |
285 | invalid anytime, even before the end of the current statement. Use |
286 | literals or global values as arguments to the "p" pack() template to |
287 | avoid this warning. |
288 | |
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289 | =item Attempt to use reference as lvalue in substr |
290 | |
291 | (W) You supplied a reference as the first argument to substr() used |
8b1a09fc |
292 | as an lvalue, which is pretty strange. Perhaps you forgot to |
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293 | dereference it first. See L<perlfunc/substr>. |
294 | |
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295 | =item Bad arg length for %s, is %d, should be %d |
296 | |
297 | (F) You passed a buffer of the wrong size to one of msgctl(), semctl() or |
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298 | shmctl(). In C parlance, the correct sizes are, respectively, |
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299 | S<sizeof(struct msqid_ds *)>, S<sizeof(struct semid_ds *)>, and |
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300 | S<sizeof(struct shmid_ds *)>. |
301 | |
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302 | =item Bad filehandle: %s |
303 | |
304 | (F) A symbol was passed to something wanting a filehandle, but the symbol |
305 | has no filehandle associated with it. Perhaps you didn't do an open(), or |
306 | did it in another package. |
307 | |
308 | =item Bad free() ignored |
309 | |
310 | (S) An internal routine called free() on something that had never been |
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311 | malloc()ed in the first place. Mandatory, but can be disabled by |
312 | setting environment variable C<PERL_BADFREE> to 1. |
313 | |
314 | This message can be quite often seen with DB_File on systems with |
315 | "hard" dynamic linking, like C<AIX> and C<OS/2>. It is a bug of |
316 | C<Berkeley DB> which is left unnoticed if C<DB> uses I<forgiving> |
317 | system malloc(). |
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318 | |
aa689395 |
319 | =item Bad hash |
320 | |
321 | (P) One of the internal hash routines was passed a null HV pointer. |
322 | |
a0d0e21e |
323 | =item Bad name after %s:: |
324 | |
325 | (F) You started to name a symbol by using a package prefix, and then didn't |
326 | finish the symbol. In particular, you can't interpolate outside of quotes, |
327 | so |
328 | |
329 | $var = 'myvar'; |
330 | $sym = mypack::$var; |
331 | |
332 | is not the same as |
333 | |
334 | $var = 'myvar'; |
335 | $sym = "mypack::$var"; |
336 | |
337 | =item Bad symbol for array |
338 | |
339 | (P) An internal request asked to add an array entry to something that |
340 | wasn't a symbol table entry. |
341 | |
342 | =item Bad symbol for filehandle |
343 | |
344 | (P) An internal request asked to add a filehandle entry to something that |
345 | wasn't a symbol table entry. |
346 | |
347 | =item Bad symbol for hash |
348 | |
349 | (P) An internal request asked to add a hash entry to something that |
350 | wasn't a symbol table entry. |
351 | |
8b1a09fc |
352 | =item Badly placed ()'s |
cb1a09d0 |
353 | |
354 | (A) You've accidentally run your script through B<csh> instead |
3a52c276 |
355 | of Perl. Check the #! line, or manually feed your script into |
356 | Perl yourself. |
cb1a09d0 |
357 | |
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358 | =item Bareword "%s" not allowed while "strict subs" in use |
359 | |
360 | (F) With "strict subs" in use, a bareword is only allowed as a |
361 | subroutine identifier, in curly braces or to the left of the "=>" symbol. |
54310121 |
362 | Perhaps you need to predeclare a subroutine? |
3fe9a6f1 |
363 | |
c3e0f903 |
364 | =item Bareword "%s" refers to nonexistent package |
365 | |
366 | (W) You used a qualified bareword of the form C<Foo::>, but |
367 | the compiler saw no other uses of that namespace before that point. |
368 | Perhaps you need to predeclare a package? |
369 | |
a0d0e21e |
370 | =item BEGIN failed--compilation aborted |
371 | |
372 | (F) An untrapped exception was raised while executing a BEGIN subroutine. |
373 | Compilation stops immediately and the interpreter is exited. |
374 | |
68dc0745 |
375 | =item BEGIN not safe after errors--compilation aborted |
376 | |
377 | (F) Perl found a C<BEGIN {}> subroutine (or a C<use> directive, which |
378 | implies a C<BEGIN {}>) after one or more compilation errors had |
379 | already occurred. Since the intended environment for the C<BEGIN {}> |
380 | could not be guaranteed (due to the errors), and since subsequent code |
381 | likely depends on its correct operation, Perl just gave up. |
382 | |
a0d0e21e |
383 | =item bind() on closed fd |
384 | |
385 | (W) You tried to do a bind on a closed socket. Did you forget to check |
386 | the return value of your socket() call? See L<perlfunc/bind>. |
387 | |
4633a7c4 |
388 | =item Bizarre copy of %s in %s |
389 | |
390 | (P) Perl detected an attempt to copy an internal value that is not copiable. |
391 | |
a0d0e21e |
392 | =item Callback called exit |
393 | |
394 | (F) A subroutine invoked from an external package via perl_call_sv() |
395 | exited by calling exit. |
396 | |
0a753a76 |
397 | =item Can't "goto" outside a block |
398 | |
399 | (F) A "goto" statement was executed to jump out of what might look |
400 | like a block, except that it isn't a proper block. This usually |
401 | occurs if you tried to jump out of a sort() block or subroutine, which |
402 | is a no-no. See L<perlfunc/goto>. |
403 | |
84902520 |
404 | =item Can't "goto" into the middle of a foreach loop |
405 | |
406 | (F) A "goto" statement was executed to jump into the middle of a |
407 | foreach loop. You can't get there from here. See L<perlfunc/goto>. |
408 | |
a0d0e21e |
409 | =item Can't "last" outside a block |
410 | |
411 | (F) A "last" statement was executed to break out of the current block, |
412 | except that there's this itty bitty problem called there isn't a |
413 | current block. Note that an "if" or "else" block doesn't count as a |
0a753a76 |
414 | "loopish" block, as doesn't a block given to sort(). You can usually double |
415 | the curlies to get the same effect though, because the inner curlies |
416 | will be considered a block that loops once. See L<perlfunc/last>. |
a0d0e21e |
417 | |
418 | =item Can't "next" outside a block |
419 | |
420 | (F) A "next" statement was executed to reiterate the current block, but |
421 | there isn't a current block. Note that an "if" or "else" block doesn't |
0a753a76 |
422 | count as a "loopish" block, as doesn't a block given to sort(). You can |
423 | usually double the curlies to get the same effect though, because the inner |
54310121 |
424 | curlies will be considered a block that loops once. See L<perlfunc/next>. |
a0d0e21e |
425 | |
426 | =item Can't "redo" outside a block |
427 | |
428 | (F) A "redo" statement was executed to restart the current block, but |
429 | there isn't a current block. Note that an "if" or "else" block doesn't |
0a753a76 |
430 | count as a "loopish" block, as doesn't a block given to sort(). You can |
431 | usually double the curlies to get the same effect though, because the inner |
54310121 |
432 | curlies will be considered a block that loops once. See L<perlfunc/redo>. |
a0d0e21e |
433 | |
434 | =item Can't bless non-reference value |
435 | |
436 | (F) Only hard references may be blessed. This is how Perl "enforces" |
437 | encapsulation of objects. See L<perlobj>. |
438 | |
439 | =item Can't break at that line |
440 | |
54310121 |
441 | (S) A warning intended to only be printed while running within the debugger, indicating |
a0d0e21e |
442 | the line number specified wasn't the location of a statement that could |
443 | be stopped at. |
444 | |
445 | =item Can't call method "%s" in empty package "%s" |
446 | |
447 | (F) You called a method correctly, and it correctly indicated a package |
448 | functioning as a class, but that package doesn't have ANYTHING defined |
449 | in it, let alone methods. See L<perlobj>. |
450 | |
451 | =item Can't call method "%s" on unblessed reference |
452 | |
54310121 |
453 | (F) A method call must know in what package it's supposed to run. It |
a0d0e21e |
454 | ordinarily finds this out from the object reference you supply, but |
455 | you didn't supply an object reference in this case. A reference isn't |
456 | an object reference until it has been blessed. See L<perlobj>. |
457 | |
458 | =item Can't call method "%s" without a package or object reference |
459 | |
460 | (F) You used the syntax of a method call, but the slot filled by the |
461 | object reference or package name contains an expression that returns |
462 | neither an object reference nor a package name. (Perhaps it's null?) |
463 | Something like this will reproduce the error: |
464 | |
465 | $BADREF = undef; |
466 | process $BADREF 1,2,3; |
467 | $BADREF->process(1,2,3); |
468 | |
469 | =item Can't chdir to %s |
470 | |
471 | (F) You called C<perl -x/foo/bar>, but C</foo/bar> is not a directory |
472 | that you can chdir to, possibly because it doesn't exist. |
473 | |
474 | =item Can't coerce %s to integer in %s |
475 | |
476 | (F) Certain types of SVs, in particular real symbol table entries |
55497cff |
477 | (typeglobs), can't be forced to stop being what they are. So you can't |
a0d0e21e |
478 | say things like: |
479 | |
480 | *foo += 1; |
481 | |
482 | You CAN say |
483 | |
484 | $foo = *foo; |
485 | $foo += 1; |
486 | |
487 | but then $foo no longer contains a glob. |
488 | |
489 | =item Can't coerce %s to number in %s |
490 | |
491 | (F) Certain types of SVs, in particular real symbol table entries |
55497cff |
492 | (typeglobs), can't be forced to stop being what they are. |
a0d0e21e |
493 | |
494 | =item Can't coerce %s to string in %s |
495 | |
496 | (F) Certain types of SVs, in particular real symbol table entries |
55497cff |
497 | (typeglobs), can't be forced to stop being what they are. |
a0d0e21e |
498 | |
499 | =item Can't create pipe mailbox |
500 | |
748a9306 |
501 | (P) An error peculiar to VMS. The process is suffering from exhausted quotas |
502 | or other plumbing problems. |
a0d0e21e |
503 | |
504 | =item Can't declare %s in my |
505 | |
5f05dabc |
506 | (F) Only scalar, array, and hash variables may be declared as lexical variables. |
a0d0e21e |
507 | They must have ordinary identifiers as names. |
508 | |
509 | =item Can't do inplace edit on %s: %s |
510 | |
511 | (S) The creation of the new file failed for the indicated reason. |
512 | |
54310121 |
513 | =item Can't do inplace edit without backup |
a0d0e21e |
514 | |
54310121 |
515 | (F) You're on a system such as MS-DOS that gets confused if you try reading |
3fe9a6f1 |
516 | from a deleted (but still opened) file. You have to say C<-i.bak>, or some |
a0d0e21e |
517 | such. |
518 | |
8b1a09fc |
519 | =item Can't do inplace edit: %s E<gt> 14 characters |
a0d0e21e |
520 | |
521 | (S) There isn't enough room in the filename to make a backup name for the file. |
522 | |
523 | =item Can't do inplace edit: %s is not a regular file |
524 | |
525 | (S) You tried to use the B<-i> switch on a special file, such as a file in |
526 | /dev, or a FIFO. The file was ignored. |
527 | |
528 | =item Can't do setegid! |
529 | |
530 | (P) The setegid() call failed for some reason in the setuid emulator |
531 | of suidperl. |
532 | |
533 | =item Can't do seteuid! |
534 | |
535 | (P) The setuid emulator of suidperl failed for some reason. |
536 | |
537 | =item Can't do setuid |
538 | |
539 | (F) This typically means that ordinary perl tried to exec suidperl to |
540 | do setuid emulation, but couldn't exec it. It looks for a name of the |
541 | form sperl5.000 in the same directory that the perl executable resides |
542 | under the name perl5.000, typically /usr/local/bin on Unix machines. |
543 | If the file is there, check the execute permissions. If it isn't, ask |
544 | your sysadmin why he and/or she removed it. |
545 | |
546 | =item Can't do waitpid with flags |
547 | |
548 | (F) This machine doesn't have either waitpid() or wait4(), so only waitpid() |
549 | without flags is emulated. |
550 | |
8b1a09fc |
551 | =item Can't do {n,m} with n E<gt> m |
a0d0e21e |
552 | |
553 | (F) Minima must be less than or equal to maxima. If you really want |
554 | your regexp to match something 0 times, just put {0}. See L<perlre>. |
555 | |
556 | =item Can't emulate -%s on #! line |
557 | |
558 | (F) The #! line specifies a switch that doesn't make sense at this point. |
559 | For example, it'd be kind of silly to put a B<-x> on the #! line. |
560 | |
561 | =item Can't exec "%s": %s |
562 | |
5f05dabc |
563 | (W) An system(), exec(), or piped open call could not execute the named |
a0d0e21e |
564 | program for the indicated reason. Typical reasons include: the permissions |
565 | were wrong on the file, the file wasn't found in C<$ENV{PATH}>, the |
566 | executable in question was compiled for another architecture, or the |
567 | #! line in a script points to an interpreter that can't be run for |
568 | similar reasons. (Or maybe your system doesn't support #! at all.) |
569 | |
570 | =item Can't exec %s |
571 | |
572 | (F) Perl was trying to execute the indicated program for you because that's |
573 | what the #! line said. If that's not what you wanted, you may need to |
574 | mention "perl" on the #! line somewhere. |
575 | |
576 | =item Can't execute %s |
577 | |
2a92aaa0 |
578 | (F) You used the B<-S> switch, but the copies of the script to execute found |
579 | in the PATH did not have correct permissions. |
580 | |
581 | =item Can't find %s on PATH, '.' not in PATH |
582 | |
583 | (F) You used the B<-S> switch, but the script to execute could not be found |
584 | in the PATH, or at least not with the correct permissions. The script |
585 | exists in the current directory, but PATH prohibits running it. |
586 | |
587 | =item Can't find %s on PATH |
588 | |
a0d0e21e |
589 | (F) You used the B<-S> switch, but the script to execute could not be found |
2a92aaa0 |
590 | in the PATH. |
a0d0e21e |
591 | |
592 | =item Can't find label %s |
593 | |
594 | (F) You said to goto a label that isn't mentioned anywhere that it's possible |
595 | for us to go to. See L<perlfunc/goto>. |
596 | |
597 | =item Can't find string terminator %s anywhere before EOF |
598 | |
599 | (F) Perl strings can stretch over multiple lines. This message means that |
5f05dabc |
600 | the closing delimiter was omitted. Because bracketed quotes count nesting |
a0d0e21e |
601 | levels, the following is missing its final parenthesis: |
602 | |
fb73857a |
603 | print q(The character '(' starts a side comment.); |
604 | |
605 | If you're getting this error from a here-document, you may have |
606 | included unseen whitespace before or after your closing tag. A good |
607 | programmer's editor will have a way to help you find these characters. |
a0d0e21e |
608 | |
609 | =item Can't fork |
610 | |
611 | (F) A fatal error occurred while trying to fork while opening a pipeline. |
612 | |
748a9306 |
613 | =item Can't get filespec - stale stat buffer? |
614 | |
615 | (S) A warning peculiar to VMS. This arises because of the difference between |
616 | access checks under VMS and under the Unix model Perl assumes. Under VMS, |
617 | access checks are done by filename, rather than by bits in the stat buffer, so |
618 | that ACLs and other protections can be taken into account. Unfortunately, Perl |
619 | assumes that the stat buffer contains all the necessary information, and passes |
620 | it, instead of the filespec, to the access checking routine. It will try to |
621 | retrieve the filespec using the device name and FID present in the stat buffer, |
622 | but this works only if you haven't made a subsequent call to the CRTL stat() |
5f05dabc |
623 | routine, because the device name is overwritten with each call. If this warning |
748a9306 |
624 | appears, the name lookup failed, and the access checking routine gave up and |
625 | returned FALSE, just to be conservative. (Note: The access checking routine |
626 | knows about the Perl C<stat> operator and file tests, so you shouldn't ever |
627 | see this warning in response to a Perl command; it arises only if some internal |
628 | code takes stat buffers lightly.) |
629 | |
a0d0e21e |
630 | =item Can't get pipe mailbox device name |
631 | |
748a9306 |
632 | (P) An error peculiar to VMS. After creating a mailbox to act as a pipe, Perl |
633 | can't retrieve its name for later use. |
a0d0e21e |
634 | |
635 | =item Can't get SYSGEN parameter value for MAXBUF |
636 | |
748a9306 |
637 | (P) An error peculiar to VMS. Perl asked $GETSYI how big you want your |
638 | mailbox buffers to be, and didn't get an answer. |
a0d0e21e |
639 | |
640 | =item Can't goto subroutine outside a subroutine |
641 | |
642 | (F) The deeply magical "goto subroutine" call can only replace one subroutine |
643 | call for another. It can't manufacture one out of whole cloth. In general |
5f05dabc |
644 | you should be calling it out of only an AUTOLOAD routine anyway. See |
a0d0e21e |
645 | L<perlfunc/goto>. |
646 | |
b150fb22 |
647 | =item Can't goto subroutine from an eval-string |
648 | |
649 | (F) The "goto subroutine" call can't be used to jump out of an eval "string". |
650 | (You can use it to jump out of an eval {BLOCK}, but you probably don't want to.) |
651 | |
706a304b |
652 | =item Can't localize through a reference |
4633a7c4 |
653 | |
706a304b |
654 | (F) You said something like C<local $$ref>, which Perl can't currently |
655 | handle, because when it goes to restore the old value of whatever $ref |
656 | pointed to after the scope of the local() is finished, it can't be |
657 | sure that $ref will still be a reference. |
4633a7c4 |
658 | |
748a9306 |
659 | =item Can't localize lexical variable %s |
660 | |
2ba9eb46 |
661 | (F) You used local on a variable name that was previously declared as a |
748a9306 |
662 | lexical variable using "my". This is not allowed. If you want to |
663 | localize a package variable of the same name, qualify it with the |
664 | package name. |
665 | |
4727527e |
666 | =item Can't locate auto/%s.al in @INC |
667 | |
668 | (F) A function (or method) was called in a package which allows autoload, |
669 | but there is no function to autoload. Most probable causes are a misprint |
670 | in a function/method name or a failure to C<AutoSplit> the file, say, by |
671 | doing C<make install>. |
672 | |
38b8243a |
673 | =item Can't locate %s in @INC |
a0d0e21e |
674 | |
7a2e2cd6 |
675 | (F) You said to do (or require, or use) a file that couldn't be found |
54310121 |
676 | in any of the libraries mentioned in @INC. Perhaps you need to set the |
677 | PERL5LIB or PERL5OPT environment variable to say where the extra library |
678 | is, or maybe the script needs to add the library name to @INC. Or maybe |
a0d0e21e |
679 | you just misspelled the name of the file. See L<perlfunc/require>. |
680 | |
681 | =item Can't locate object method "%s" via package "%s" |
682 | |
683 | (F) You called a method correctly, and it correctly indicated a package |
684 | functioning as a class, but that package doesn't define that particular |
2ba9eb46 |
685 | method, nor does any of its base classes. See L<perlobj>. |
a0d0e21e |
686 | |
687 | =item Can't locate package %s for @%s::ISA |
688 | |
689 | (W) The @ISA array contained the name of another package that doesn't seem |
690 | to exist. |
691 | |
3e3baf6d |
692 | =item Can't make list assignment to \%ENV on this system |
693 | |
694 | (F) List assignment to %ENV is not supported on some systems, notably VMS. |
695 | |
a0d0e21e |
696 | =item Can't modify %s in %s |
697 | |
698 | (F) You aren't allowed to assign to the item indicated, or otherwise try to |
5f05dabc |
699 | change it, such as with an auto-increment. |
a0d0e21e |
700 | |
54310121 |
701 | =item Can't modify nonexistent substring |
a0d0e21e |
702 | |
703 | (P) The internal routine that does assignment to a substr() was handed |
704 | a NULL. |
705 | |
5f05dabc |
706 | =item Can't msgrcv to read-only var |
a0d0e21e |
707 | |
5f05dabc |
708 | (F) The target of a msgrcv must be modifiable to be used as a receive |
a0d0e21e |
709 | buffer. |
710 | |
711 | =item Can't open %s: %s |
712 | |
08e9d68e |
713 | (S) The implicit opening of a file through use of the C<E<lt>E<gt>> |
714 | filehandle, either implicitly under the C<-n> or C<-p> command-line |
715 | switches, or explicitly, failed for the indicated reason. Usually this |
716 | is because you don't have read permission for a file which you named |
717 | on the command line. |
a0d0e21e |
718 | |
719 | =item Can't open bidirectional pipe |
720 | |
721 | (W) You tried to say C<open(CMD, "|cmd|")>, which is not supported. You can |
722 | try any of several modules in the Perl library to do this, such as |
7e1af8bc |
723 | IPC::Open2. Alternately, direct the pipe's output to a file using "E<gt>", |
a0d0e21e |
724 | and then read it in under a different file handle. |
725 | |
748a9306 |
726 | =item Can't open error file %s as stderr |
727 | |
728 | (F) An error peculiar to VMS. Perl does its own command line redirection, and |
8b1a09fc |
729 | couldn't open the file specified after '2E<gt>' or '2E<gt>E<gt>' on the |
730 | command line for writing. |
748a9306 |
731 | |
732 | =item Can't open input file %s as stdin |
733 | |
734 | (F) An error peculiar to VMS. Perl does its own command line redirection, and |
8b1a09fc |
735 | couldn't open the file specified after 'E<lt>' on the command line for reading. |
748a9306 |
736 | |
737 | =item Can't open output file %s as stdout |
738 | |
739 | (F) An error peculiar to VMS. Perl does its own command line redirection, and |
8b1a09fc |
740 | couldn't open the file specified after 'E<gt>' or 'E<gt>E<gt>' on the command |
741 | line for writing. |
748a9306 |
742 | |
743 | =item Can't open output pipe (name: %s) |
744 | |
745 | (P) An error peculiar to VMS. Perl does its own command line redirection, and |
746 | couldn't open the pipe into which to send data destined for stdout. |
747 | |
a0d0e21e |
748 | =item Can't open perl script "%s": %s |
749 | |
750 | (F) The script you specified can't be opened for the indicated reason. |
751 | |
7bac28a0 |
752 | =item Can't redefine active sort subroutine %s |
753 | |
754 | (F) Perl optimizes the internal handling of sort subroutines and keeps |
755 | pointers into them. You tried to redefine one such sort subroutine when it |
756 | was currently active, which is not allowed. If you really want to do |
757 | this, you should write C<sort { &func } @x> instead of C<sort func @x>. |
758 | |
a0d0e21e |
759 | =item Can't rename %s to %s: %s, skipping file |
760 | |
761 | (S) The rename done by the B<-i> switch failed for some reason, probably because |
762 | you don't have write permission to the directory. |
763 | |
748a9306 |
764 | =item Can't reopen input pipe (name: %s) in binary mode |
765 | |
766 | (P) An error peculiar to VMS. Perl thought stdin was a pipe, and tried to |
767 | reopen it to accept binary data. Alas, it failed. |
768 | |
a0d0e21e |
769 | =item Can't reswap uid and euid |
770 | |
771 | (P) The setreuid() call failed for some reason in the setuid emulator |
772 | of suidperl. |
773 | |
774 | =item Can't return outside a subroutine |
775 | |
776 | (F) The return statement was executed in mainline code, that is, where |
777 | there was no subroutine call to return out of. See L<perlsub>. |
778 | |
779 | =item Can't stat script "%s" |
780 | |
781 | (P) For some reason you can't fstat() the script even though you have |
782 | it open already. Bizarre. |
783 | |
784 | =item Can't swap uid and euid |
785 | |
786 | (P) The setreuid() call failed for some reason in the setuid emulator |
787 | of suidperl. |
788 | |
789 | =item Can't take log of %g |
790 | |
fb73857a |
791 | (F) For ordinary real numbers, you can't take the logarithm of a |
792 | negative number or zero. There's a Math::Complex package that comes |
793 | standard with Perl, though, if you really want to do that for |
794 | the negative numbers. |
a0d0e21e |
795 | |
796 | =item Can't take sqrt of %g |
797 | |
798 | (F) For ordinary real numbers, you can't take the square root of a |
fb73857a |
799 | negative number. There's a Math::Complex package that comes standard |
800 | with Perl, though, if you really want to do that. |
a0d0e21e |
801 | |
802 | =item Can't undef active subroutine |
803 | |
804 | (F) You can't undefine a routine that's currently running. You can, |
805 | however, redefine it while it's running, and you can even undef the |
806 | redefined subroutine while the old routine is running. Go figure. |
807 | |
808 | =item Can't unshift |
809 | |
810 | (F) You tried to unshift an "unreal" array that can't be unshifted, such |
811 | as the main Perl stack. |
812 | |
813 | =item Can't upgrade that kind of scalar |
814 | |
815 | (P) The internal sv_upgrade routine adds "members" to an SV, making |
816 | it into a more specialized kind of SV. The top several SV types are |
817 | so specialized, however, that they cannot be interconverted. This |
818 | message indicates that such a conversion was attempted. |
819 | |
820 | =item Can't upgrade to undef |
821 | |
822 | (P) The undefined SV is the bottom of the totem pole, in the scheme |
823 | of upgradability. Upgrading to undef indicates an error in the |
824 | code calling sv_upgrade. |
825 | |
1d2dff63 |
826 | =item Can't use %%! because Errno.pm is not available |
827 | |
828 | (F) The first time the %! hash is used, perl automatically loads the |
829 | Errno.pm module. The Errno module is expected to tie the %! hash to |
830 | provide symbolic names for C<$!> errno values. |
831 | |
c07a80fd |
832 | =item Can't use "my %s" in sort comparison |
833 | |
834 | (F) The global variables $a and $b are reserved for sort comparisons. |
8b1a09fc |
835 | You mentioned $a or $b in the same line as the E<lt>=E<gt> or cmp operator, |
c07a80fd |
836 | and the variable had earlier been declared as a lexical variable. |
837 | Either qualify the sort variable with the package name, or rename the |
838 | lexical variable. |
839 | |
a0d0e21e |
840 | =item Can't use %s for loop variable |
841 | |
842 | (F) Only a simple scalar variable may be used as a loop variable on a foreach. |
843 | |
844 | =item Can't use %s ref as %s ref |
845 | |
846 | (F) You've mixed up your reference types. You have to dereference a |
847 | reference of the type needed. You can use the ref() function to |
848 | test the type of the reference, if need be. |
849 | |
748a9306 |
850 | =item Can't use \1 to mean $1 in expression |
851 | |
852 | (W) In an ordinary expression, backslash is a unary operator that creates |
853 | a reference to its argument. The use of backslash to indicate a backreference |
5f05dabc |
854 | to a matched substring is valid only as part of a regular expression pattern. |
748a9306 |
855 | Trying to do this in ordinary Perl code produces a value that prints |
856 | out looking like SCALAR(0xdecaf). Use the $1 form instead. |
857 | |
44a8e56a |
858 | =item Can't use bareword ("%s") as %s ref while \"strict refs\" in use |
859 | |
860 | (F) Only hard references are allowed by "strict refs". Symbolic references |
861 | are disallowed. See L<perlref>. |
862 | |
748a9306 |
863 | =item Can't use string ("%s") as %s ref while "strict refs" in use |
a0d0e21e |
864 | |
865 | (F) Only hard references are allowed by "strict refs". Symbolic references |
866 | are disallowed. See L<perlref>. |
867 | |
868 | =item Can't use an undefined value as %s reference |
869 | |
870 | (F) A value used as either a hard reference or a symbolic reference must |
54310121 |
871 | be a defined value. This helps to delurk some insidious errors. |
a0d0e21e |
872 | |
a0d0e21e |
873 | =item Can't use global %s in "my" |
874 | |
875 | (F) You tried to declare a magical variable as a lexical variable. This is |
5f05dabc |
876 | not allowed, because the magic can be tied to only one location (namely |
a0d0e21e |
877 | the global variable) and it would be incredibly confusing to have |
878 | variables in your program that looked like magical variables but |
879 | weren't. |
880 | |
748a9306 |
881 | =item Can't use subscript on %s |
882 | |
883 | (F) The compiler tried to interpret a bracketed expression as a |
884 | subscript. But to the left of the brackets was an expression that |
885 | didn't look like an array reference, or anything else subscriptable. |
886 | |
5f05dabc |
887 | =item Can't x= to read-only value |
a0d0e21e |
888 | |
889 | (F) You tried to repeat a constant value (often the undefined value) with |
890 | an assignment operator, which implies modifying the value itself. |
891 | Perhaps you need to copy the value to a temporary, and repeat that. |
892 | |
b6c543e3 |
893 | =item Cannot find an opnumber for "%s" |
894 | |
895 | (F) A string of a form C<CORE::word> was given to prototype(), but |
896 | there is no builtin with the name C<word>. |
897 | |
e7ea3e70 |
898 | =item Cannot resolve method `%s' overloading `%s' in package `%s' |
899 | |
900 | (F|P) Error resolving overloading specified by a method name (as |
901 | opposed to a subroutine reference): no such method callable via the |
902 | package. If method name is C<???>, this is an internal error. |
903 | |
4599a1de |
904 | =item Character class syntax [. .] is reserved for future extensions |
905 | |
906 | (W) Within regular expression character classes ([]) the syntax beginning |
907 | with "[." and ending with ".]" is reserved for future extensions. |
908 | If you need to represent those character sequences inside a regular |
909 | expression character class, just quote the square brackets with the |
910 | backslash: "\[." and ".\]". |
911 | |
912 | =item Character class syntax [: :] is reserved for future extensions |
913 | |
914 | (W) Within regular expression character classes ([]) the syntax beginning |
915 | with "[:" and ending with ":]" is reserved for future extensions. |
916 | If you need to represent those character sequences inside a regular |
917 | expression character class, just quote the square brackets with the |
918 | backslash: "\[:" and ":\]". |
919 | |
920 | =item Character class syntax [= =] is reserved for future extensions |
921 | |
922 | (W) Within regular expression character classes ([]) the syntax |
923 | beginning with "[=" and ending with "=]" is reserved for future extensions. |
924 | If you need to represent those character sequences inside a regular |
925 | expression character class, just quote the square brackets with the |
926 | backslash: "\[=" and "=\]". |
927 | |
a0d0e21e |
928 | =item chmod: mode argument is missing initial 0 |
929 | |
930 | (W) A novice will sometimes say |
931 | |
932 | chmod 777, $filename |
933 | |
934 | not realizing that 777 will be interpreted as a decimal number, equivalent |
935 | to 01411. Octal constants are introduced with a leading 0 in Perl, as in C. |
936 | |
8b1a09fc |
937 | =item Close on unopened file E<lt>%sE<gt> |
a0d0e21e |
938 | |
939 | (W) You tried to close a filehandle that was never opened. |
940 | |
7a2e2cd6 |
941 | =item Compilation failed in require |
942 | |
943 | (F) Perl could not compile a file specified in a C<require> statement. |
944 | Perl uses this generic message when none of the errors that it encountered |
945 | were severe enough to halt compilation immediately. |
946 | |
a0d0e21e |
947 | =item connect() on closed fd |
948 | |
949 | (W) You tried to do a connect on a closed socket. Did you forget to check |
950 | the return value of your socket() call? See L<perlfunc/connect>. |
951 | |
4cee8e80 |
952 | =item Constant subroutine %s redefined |
953 | |
954 | (S) You redefined a subroutine which had previously been eligible for |
955 | inlining. See L<perlsub/"Constant Functions"> for commentary and |
956 | workarounds. |
957 | |
9607fc9c |
958 | =item Constant subroutine %s undefined |
959 | |
960 | (S) You undefined a subroutine which had previously been eligible for |
961 | inlining. See L<perlsub/"Constant Functions"> for commentary and |
962 | workarounds. |
963 | |
e7ea3e70 |
964 | =item Copy method did not return a reference |
965 | |
966 | (F) The method which overloads "=" is buggy. See L<overload/Copy Constructor>. |
967 | |
a0d0e21e |
968 | =item Corrupt malloc ptr 0x%lx at 0x%lx |
969 | |
970 | (P) The malloc package that comes with Perl had an internal failure. |
971 | |
972 | =item corrupted regexp pointers |
973 | |
974 | (P) The regular expression engine got confused by what the regular |
975 | expression compiler gave it. |
976 | |
977 | =item corrupted regexp program |
978 | |
979 | (P) The regular expression engine got passed a regexp program without |
980 | a valid magic number. |
981 | |
982 | =item Deep recursion on subroutine "%s" |
983 | |
984 | (W) This subroutine has called itself (directly or indirectly) 100 |
3e3baf6d |
985 | times more than it has returned. This probably indicates an infinite |
a0d0e21e |
986 | recursion, unless you're writing strange benchmark programs, in which |
987 | case it indicates something else. |
988 | |
fc36a67e |
989 | =item Delimiter for here document is too long |
990 | |
991 | (F) In a here document construct like C<E<lt>E<lt>FOO>, the label |
992 | C<FOO> is too long for Perl to handle. You have to be seriously |
993 | twisted to write code that triggers this error. |
994 | |
4633a7c4 |
995 | =item Did you mean &%s instead? |
996 | |
997 | (W) You probably referred to an imported subroutine &FOO as $FOO or some such. |
998 | |
748a9306 |
999 | =item Did you mean $ or @ instead of %? |
a0d0e21e |
1000 | |
748a9306 |
1001 | (W) You probably said %hash{$key} when you meant $hash{$key} or @hash{@keys}. |
1002 | On the other hand, maybe you just meant %hash and got carried away. |
1003 | |
7e1af8bc |
1004 | =item Died |
5f05dabc |
1005 | |
1006 | (F) You passed die() an empty string (the equivalent of C<die "">) or |
1007 | you called it with no args and both C<$@> and C<$_> were empty. |
1008 | |
54310121 |
1009 | =item Do you need to predeclare %s? |
748a9306 |
1010 | |
1011 | (S) This is an educated guess made in conjunction with the message "%s |
1012 | found where operator expected". It often means a subroutine or module |
1013 | name is being referenced that hasn't been declared yet. This may be |
1014 | because of ordering problems in your file, or because of a missing |
1015 | "sub", "package", "require", or "use" statement. If you're |
1016 | referencing something that isn't defined yet, you don't actually have |
1017 | to define the subroutine or package before the current location. You |
1018 | can use an empty "sub foo;" or "package FOO;" to enter a "forward" |
1019 | declaration. |
a0d0e21e |
1020 | |
1021 | =item Don't know how to handle magic of type '%s' |
1022 | |
1023 | (P) The internal handling of magical variables has been cursed. |
1024 | |
1025 | =item do_study: out of memory |
1026 | |
1027 | (P) This should have been caught by safemalloc() instead. |
1028 | |
1029 | =item Duplicate free() ignored |
1030 | |
1031 | (S) An internal routine called free() on something that had already |
1032 | been freed. |
1033 | |
4633a7c4 |
1034 | =item elseif should be elsif |
1035 | |
1036 | (S) There is no keyword "elseif" in Perl because Larry thinks it's |
1037 | ugly. Your code will be interpreted as an attempt to call a method |
1038 | named "elseif" for the class returned by the following block. This is |
1039 | unlikely to be what you want. |
1040 | |
a0d0e21e |
1041 | =item END failed--cleanup aborted |
1042 | |
1043 | (F) An untrapped exception was raised while executing an END subroutine. |
1044 | The interpreter is immediately exited. |
1045 | |
748a9306 |
1046 | =item Error converting file specification %s |
1047 | |
5f05dabc |
1048 | (F) An error peculiar to VMS. Because Perl may have to deal with file |
748a9306 |
1049 | specifications in either VMS or Unix syntax, it converts them to a |
1050 | single form when it must operate on them directly. Either you've |
1051 | passed an invalid file specification to Perl, or you've found a |
1052 | case the conversion routines don't handle. Drat. |
1053 | |
fc36a67e |
1054 | =item Excessively long <> operator |
1055 | |
1056 | (F) The contents of a <> operator may not exceed the maximum size of a |
1057 | Perl identifier. If you're just trying to glob a long list of |
1058 | filenames, try using the glob() operator, or put the filenames into a |
1059 | variable and glob that. |
1060 | |
f86702cc |
1061 | =item Execution of %s aborted due to compilation errors |
a0d0e21e |
1062 | |
1063 | (F) The final summary message when a Perl compilation fails. |
1064 | |
1065 | =item Exiting eval via %s |
1066 | |
8b1a09fc |
1067 | (W) You are exiting an eval by unconventional means, such as |
a0d0e21e |
1068 | a goto, or a loop control statement. |
1069 | |
0a753a76 |
1070 | =item Exiting pseudo-block via %s |
1071 | |
1072 | (W) You are exiting a rather special block construct (like a sort block or |
1073 | subroutine) by unconventional means, such as a goto, or a loop control |
1074 | statement. See L<perlfunc/sort>. |
1075 | |
a0d0e21e |
1076 | =item Exiting subroutine via %s |
1077 | |
8b1a09fc |
1078 | (W) You are exiting a subroutine by unconventional means, such as |
a0d0e21e |
1079 | a goto, or a loop control statement. |
1080 | |
1081 | =item Exiting substitution via %s |
1082 | |
8b1a09fc |
1083 | (W) You are exiting a substitution by unconventional means, such as |
a0d0e21e |
1084 | a return, a goto, or a loop control statement. |
1085 | |
7b8d334a |
1086 | =item Explicit blessing to '' (assuming package main) |
1087 | |
1088 | (W) You are blessing a reference to a zero length string. This has |
1089 | the effect of blessing the reference into the package main. This is |
1090 | usually not what you want. Consider providing a default target |
1091 | package, e.g. bless($ref, $p or 'MyPackage'); |
1092 | |
748a9306 |
1093 | =item Fatal VMS error at %s, line %d |
a0d0e21e |
1094 | |
748a9306 |
1095 | (P) An error peculiar to VMS. Something untoward happened in a VMS system |
1096 | service or RTL routine; Perl's exit status should provide more details. The |
1097 | filename in "at %s" and the line number in "line %d" tell you which section of |
1098 | the Perl source code is distressed. |
a0d0e21e |
1099 | |
1100 | =item fcntl is not implemented |
1101 | |
1102 | (F) Your machine apparently doesn't implement fcntl(). What is this, a |
1103 | PDP-11 or something? |
1104 | |
1105 | =item Filehandle %s never opened |
1106 | |
1107 | (W) An I/O operation was attempted on a filehandle that was never initialized. |
1108 | You need to do an open() or a socket() call, or call a constructor from |
1109 | the FileHandle package. |
1110 | |
5f05dabc |
1111 | =item Filehandle %s opened for only input |
a0d0e21e |
1112 | |
1113 | (W) You tried to write on a read-only filehandle. If you |
1114 | intended it to be a read-write filehandle, you needed to open it with |
8b1a09fc |
1115 | "+E<lt>" or "+E<gt>" or "+E<gt>E<gt>" instead of with "E<lt>" or nothing. If |
5f05dabc |
1116 | you intended only to write the file, use "E<gt>" or "E<gt>E<gt>". See |
8b1a09fc |
1117 | L<perlfunc/open>. |
a0d0e21e |
1118 | |
5f05dabc |
1119 | =item Filehandle opened for only input |
a0d0e21e |
1120 | |
1121 | (W) You tried to write on a read-only filehandle. If you |
1122 | intended it to be a read-write filehandle, you needed to open it with |
8b1a09fc |
1123 | "+E<lt>" or "+E<gt>" or "+E<gt>E<gt>" instead of with "E<lt>" or nothing. If |
5f05dabc |
1124 | you intended only to write the file, use "E<gt>" or "E<gt>E<gt>". See |
8b1a09fc |
1125 | L<perlfunc/open>. |
a0d0e21e |
1126 | |
1127 | =item Final $ should be \$ or $name |
1128 | |
1129 | (F) You must now decide whether the final $ in a string was meant to be |
1130 | a literal dollar sign, or was meant to introduce a variable name |
1131 | that happens to be missing. So you have to put either the backslash or |
1132 | the name. |
1133 | |
1134 | =item Final @ should be \@ or @name |
1135 | |
1136 | (F) You must now decide whether the final @ in a string was meant to be |
1137 | a literal "at" sign, or was meant to introduce a variable name |
1138 | that happens to be missing. So you have to put either the backslash or |
1139 | the name. |
1140 | |
1141 | =item Format %s redefined |
1142 | |
1143 | (W) You redefined a format. To suppress this warning, say |
1144 | |
1145 | { |
1146 | local $^W = 0; |
1147 | eval "format NAME =..."; |
1148 | } |
1149 | |
1150 | =item Format not terminated |
1151 | |
1152 | (F) A format must be terminated by a line with a solitary dot. Perl got |
1153 | to the end of your file without finding such a line. |
1154 | |
1155 | =item Found = in conditional, should be == |
1156 | |
1157 | (W) You said |
1158 | |
1159 | if ($foo = 123) |
1160 | |
1161 | when you meant |
1162 | |
1163 | if ($foo == 123) |
1164 | |
1165 | (or something like that). |
1166 | |
1167 | =item gdbm store returned %d, errno %d, key "%s" |
1168 | |
1169 | (S) A warning from the GDBM_File extension that a store failed. |
1170 | |
1171 | =item gethostent not implemented |
1172 | |
1173 | (F) Your C library apparently doesn't implement gethostent(), probably |
1174 | because if it did, it'd feel morally obligated to return every hostname |
1175 | on the Internet. |
1176 | |
1177 | =item get{sock,peer}name() on closed fd |
1178 | |
1179 | (W) You tried to get a socket or peer socket name on a closed socket. |
1180 | Did you forget to check the return value of your socket() call? |
1181 | |
748a9306 |
1182 | =item getpwnam returned invalid UIC %#o for user "%s" |
1183 | |
1184 | (S) A warning peculiar to VMS. The call to C<sys$getuai> underlying the |
1185 | C<getpwnam> operator returned an invalid UIC. |
1186 | |
1187 | |
a0d0e21e |
1188 | =item Glob not terminated |
1189 | |
1190 | (F) The lexer saw a left angle bracket in a place where it was expecting |
1191 | a term, so it's looking for the corresponding right angle bracket, and not |
1192 | finding it. Chances are you left some needed parentheses out earlier in |
1193 | the line, and you really meant a "less than". |
1194 | |
1195 | =item Global symbol "%s" requires explicit package name |
1196 | |
68dc0745 |
1197 | (F) You've said "use strict vars", which indicates that all variables |
1198 | must either be lexically scoped (using "my"), or explicitly qualified to |
a0d0e21e |
1199 | say which package the global variable is in (using "::"). |
1200 | |
1201 | =item goto must have label |
1202 | |
1203 | (F) Unlike with "next" or "last", you're not allowed to goto an |
1204 | unspecified destination. See L<perlfunc/goto>. |
1205 | |
1206 | =item Had to create %s unexpectedly |
1207 | |
1208 | (S) A routine asked for a symbol from a symbol table that ought to have |
1209 | existed already, but for some reason it didn't, and had to be created on |
1210 | an emergency basis to prevent a core dump. |
1211 | |
1212 | =item Hash %%s missing the % in argument %d of %s() |
1213 | |
1214 | (D) Really old Perl let you omit the % on hash names in some spots. This |
1215 | is now heavily deprecated. |
1216 | |
8903cb82 |
1217 | =item Identifier too long |
1218 | |
1219 | (F) Perl limits identifiers (names for variables, functions, etc.) to |
fc36a67e |
1220 | about 250 characters for simple names, and somewhat more for compound |
1221 | names (like C<$A::B>). You've exceeded Perl's limits. Future |
1222 | versions of Perl are likely to eliminate these arbitrary limitations. |
8903cb82 |
1223 | |
8b1a09fc |
1224 | =item Ill-formed logical name |%s| in prime_env_iter |
a0d0e21e |
1225 | |
8b1a09fc |
1226 | (W) A warning peculiar to VMS. A logical name was encountered when preparing |
1227 | to iterate over %ENV which violates the syntactic rules governing logical |
5f05dabc |
1228 | names. Because it cannot be translated normally, it is skipped, and will not |
1229 | appear in %ENV. This may be a benign occurrence, as some software packages |
54310121 |
1230 | might directly modify logical name tables and introduce nonstandard names, |
8b1a09fc |
1231 | or it may indicate that a logical name table has been corrupted. |
a0d0e21e |
1232 | |
4fdae800 |
1233 | =item Illegal character %s (carriage return) |
1234 | |
1235 | (F) A carriage return character was found in the input. This is an |
1236 | error, and not a warning, because carriage return characters can break |
54310121 |
1237 | multi-line strings, including here documents (e.g., C<print E<lt>E<lt>EOF;>). |
1238 | |
1239 | Under Unix, this error is usually caused by executing Perl code -- |
68dc0745 |
1240 | either the main program, a module, or an eval'd string -- that was |
54310121 |
1241 | transferred over a network connection from a non-Unix system without |
68dc0745 |
1242 | properly converting the text file format. |
1243 | |
1244 | Under systems that use something other than '\n' to delimit lines of |
1245 | text, this error can also be caused by reading Perl code from a file |
1246 | handle that is in binary mode (as set by the C<binmode> operator). |
1247 | |
1248 | In either case, the Perl code in question will probably need to be |
1249 | converted with something like C<s/\x0D\x0A?/\n/g> before it can be |
1250 | executed. |
4fdae800 |
1251 | |
a0d0e21e |
1252 | =item Illegal division by zero |
1253 | |
1254 | (F) You tried to divide a number by 0. Either something was wrong in your |
1255 | logic, or you need to put a conditional in to guard against meaningless input. |
1256 | |
1257 | =item Illegal modulus zero |
1258 | |
1259 | (F) You tried to divide a number by 0 to get the remainder. Most numbers |
1260 | don't take to this kindly. |
1261 | |
1262 | =item Illegal octal digit |
1263 | |
1264 | (F) You used an 8 or 9 in a octal number. |
1265 | |
748a9306 |
1266 | =item Illegal octal digit ignored |
1267 | |
1268 | (W) You may have tried to use an 8 or 9 in a octal number. Interpretation |
1269 | of the octal number stopped before the 8 or 9. |
1270 | |
6ff81951 |
1271 | =item Illegal hex digit ignored |
1272 | |
1273 | (W) You may have tried to use a character other than 0 - 9 or A - F in a |
1274 | hexadecimal number. Interpretation of the hexadecimal number stopped |
1275 | before the illegal character. |
1276 | |
54310121 |
1277 | =item Illegal switch in PERL5OPT: %s |
1278 | |
1279 | (X) The PERL5OPT environment variable may only be used to set the |
1280 | following switches: B<-[DIMUdmw]>. |
1281 | |
9607fc9c |
1282 | =item In string, @%s now must be written as \@%s |
1283 | |
1284 | (F) It used to be that Perl would try to guess whether you wanted an |
1285 | array interpolated or a literal @. It did this when the string was first |
1286 | used at runtime. Now strings are parsed at compile time, and ambiguous |
1287 | instances of @ must be disambiguated, either by prepending a backslash to |
1288 | indicate a literal, or by declaring (or using) the array within the |
1289 | program before the string (lexically). (Someday it will simply assume |
1290 | that an unbackslashed @ interpolates an array.) |
1291 | |
a0d0e21e |
1292 | =item Insecure dependency in %s |
1293 | |
8b1a09fc |
1294 | (F) You tried to do something that the tainting mechanism didn't like. |
a0d0e21e |
1295 | The tainting mechanism is turned on when you're running setuid or setgid, |
1296 | or when you specify B<-T> to turn it on explicitly. The tainting mechanism |
1297 | labels all data that's derived directly or indirectly from the user, |
1298 | who is considered to be unworthy of your trust. If any such data is |
1299 | used in a "dangerous" operation, you get this error. See L<perlsec> |
1300 | for more information. |
1301 | |
1302 | =item Insecure directory in %s |
1303 | |
1304 | (F) You can't use system(), exec(), or a piped open in a setuid or setgid |
8b1a09fc |
1305 | script if C<$ENV{PATH}> contains a directory that is writable by the world. |
a0d0e21e |
1306 | See L<perlsec>. |
1307 | |
1308 | =item Insecure PATH |
1309 | |
1310 | (F) You can't use system(), exec(), or a piped open in a setuid or |
8b1a09fc |
1311 | setgid script if C<$ENV{PATH}> is derived from data supplied (or |
a0d0e21e |
1312 | potentially supplied) by the user. The script must set the path to a |
1313 | known value, using trustworthy data. See L<perlsec>. |
1314 | |
bbce6d69 |
1315 | =item Integer overflow in hex number |
1316 | |
1317 | (S) The literal hex number you have specified is too big for your |
1318 | architecture. On a 32-bit architecture the largest hex literal is |
1319 | 0xFFFFFFFF. |
1320 | |
1321 | =item Integer overflow in octal number |
1322 | |
1323 | (S) The literal octal number you have specified is too big for your |
1324 | architecture. On a 32-bit architecture the largest octal literal is |
1325 | 037777777777. |
1326 | |
748a9306 |
1327 | =item Internal inconsistency in tracking vforks |
1328 | |
1329 | (S) A warning peculiar to VMS. Perl keeps track of the number |
5f05dabc |
1330 | of times you've called C<fork> and C<exec>, to determine |
2ba9eb46 |
1331 | whether the current call to C<exec> should affect the current |
748a9306 |
1332 | script or a subprocess (see L<perlvms/exec>). Somehow, this count |
1333 | has become scrambled, so Perl is making a guess and treating |
1334 | this C<exec> as a request to terminate the Perl script |
1335 | and execute the specified command. |
1336 | |
a0d0e21e |
1337 | =item internal disaster in regexp |
1338 | |
1339 | (P) Something went badly wrong in the regular expression parser. |
1340 | |
5cd24f17 |
1341 | =item internal error: glob failed |
1342 | |
1343 | (P) Something went wrong with the external program(s) used for C<glob> |
1344 | and C<E<lt>*.cE<gt>>. This may mean that your csh (C shell) is |
1345 | broken. If so, you should change all of the csh-related variables in |
1346 | config.sh: If you have tcsh, make the variables refer to it as if it |
1347 | were csh (e.g. C<full_csh='/usr/bin/tcsh'>); otherwise, make them all |
1348 | empty (except that C<d_csh> should be C<'undef'>) so that Perl will |
1349 | think csh is missing. In either case, after editing config.sh, run |
1350 | C<./Configure -S> and rebuild Perl. |
1351 | |
a0d0e21e |
1352 | =item internal urp in regexp at /%s/ |
1353 | |
1354 | (P) Something went badly awry in the regular expression parser. |
1355 | |
1356 | =item invalid [] range in regexp |
1357 | |
1358 | (F) The range specified in a character class had a minimum character |
1359 | greater than the maximum character. See L<perlre>. |
1360 | |
c635e13b |
1361 | =item Invalid conversion in %s: "%s" |
1362 | |
878e08df |
1363 | (W) Perl does not understand the given format conversion. |
c635e13b |
1364 | See L<perlfunc/sprintf>. |
1365 | |
96e4d5b1 |
1366 | =item Invalid type in pack: '%s' |
1367 | |
8903cb82 |
1368 | (F) The given character is not a valid pack type. See L<perlfunc/pack>. |
fb73857a |
1369 | (W) The given character is not a valid pack type but used to be silently |
1370 | ignored. |
96e4d5b1 |
1371 | |
1372 | =item Invalid type in unpack: '%s' |
1373 | |
8903cb82 |
1374 | (F) The given character is not a valid unpack type. See L<perlfunc/unpack>. |
fb73857a |
1375 | (W) The given character is not a valid unpack type but used to be silently |
1376 | ignored. |
96e4d5b1 |
1377 | |
a0d0e21e |
1378 | =item ioctl is not implemented |
1379 | |
1380 | (F) Your machine apparently doesn't implement ioctl(), which is pretty |
1381 | strange for a machine that supports C. |
1382 | |
1383 | =item junk on end of regexp |
1384 | |
1385 | (P) The regular expression parser is confused. |
1386 | |
1387 | =item Label not found for "last %s" |
1388 | |
1389 | (F) You named a loop to break out of, but you're not currently in a |
1390 | loop of that name, not even if you count where you were called from. |
1391 | See L<perlfunc/last>. |
1392 | |
1393 | =item Label not found for "next %s" |
1394 | |
1395 | (F) You named a loop to continue, but you're not currently in a loop of |
1396 | that name, not even if you count where you were called from. See |
1397 | L<perlfunc/last>. |
1398 | |
1399 | =item Label not found for "redo %s" |
1400 | |
1401 | (F) You named a loop to restart, but you're not currently in a loop of |
1402 | that name, not even if you count where you were called from. See |
1403 | L<perlfunc/last>. |
1404 | |
1405 | =item listen() on closed fd |
1406 | |
1407 | (W) You tried to do a listen on a closed socket. Did you forget to check |
1408 | the return value of your socket() call? See L<perlfunc/listen>. |
1409 | |
a0d0e21e |
1410 | =item Method for operation %s not found in package %s during blessing |
1411 | |
1412 | (F) An attempt was made to specify an entry in an overloading table that |
e7ea3e70 |
1413 | doesn't resolve to a valid subroutine. See L<overload>. |
a0d0e21e |
1414 | |
1415 | =item Might be a runaway multi-line %s string starting on line %d |
1416 | |
1417 | (S) An advisory indicating that the previous error may have been caused |
1418 | by a missing delimiter on a string or pattern, because it eventually |
1419 | ended earlier on the current line. |
1420 | |
1421 | =item Misplaced _ in number |
1422 | |
1423 | (W) An underline in a decimal constant wasn't on a 3-digit boundary. |
1424 | |
1425 | =item Missing $ on loop variable |
1426 | |
8b1a09fc |
1427 | (F) Apparently you've been programming in B<csh> too much. Variables are always |
1428 | mentioned with the $ in Perl, unlike in the shells, where it can vary from |
a0d0e21e |
1429 | one line to the next. |
1430 | |
1431 | =item Missing comma after first argument to %s function |
1432 | |
1433 | (F) While certain functions allow you to specify a filehandle or an |
1434 | "indirect object" before the argument list, this ain't one of them. |
1435 | |
748a9306 |
1436 | =item Missing operator before %s? |
1437 | |
1438 | (S) This is an educated guess made in conjunction with the message "%s |
1439 | found where operator expected". Often the missing operator is a comma. |
1440 | |
a0d0e21e |
1441 | =item Missing right bracket |
1442 | |
1443 | (F) The lexer counted more opening curly brackets (braces) than closing ones. |
1444 | As a general rule, you'll find it's missing near the place you were last |
1445 | editing. |
1446 | |
a0d0e21e |
1447 | =item Modification of a read-only value attempted |
1448 | |
1449 | (F) You tried, directly or indirectly, to change the value of a |
5f05dabc |
1450 | constant. You didn't, of course, try "2 = 1", because the compiler |
a0d0e21e |
1451 | catches that. But an easy way to do the same thing is: |
1452 | |
1453 | sub mod { $_[0] = 1 } |
1454 | mod(2); |
1455 | |
1456 | Another way is to assign to a substr() that's off the end of the string. |
1457 | |
54310121 |
1458 | =item Modification of noncreatable array value attempted, subscript %d |
a0d0e21e |
1459 | |
1460 | (F) You tried to make an array value spring into existence, and the |
1461 | subscript was probably negative, even counting from end of the array |
1462 | backwards. |
1463 | |
54310121 |
1464 | =item Modification of noncreatable hash value attempted, subscript "%s" |
a0d0e21e |
1465 | |
1466 | (F) You tried to make a hash value spring into existence, and it couldn't |
1467 | be created for some peculiar reason. |
1468 | |
1469 | =item Module name must be constant |
1470 | |
1471 | (F) Only a bare module name is allowed as the first argument to a "use". |
1472 | |
1473 | =item msg%s not implemented |
1474 | |
1475 | (F) You don't have System V message IPC on your system. |
1476 | |
1477 | =item Multidimensional syntax %s not supported |
1478 | |
8b1a09fc |
1479 | (W) Multidimensional arrays aren't written like C<$foo[1,2,3]>. They're written |
1480 | like C<$foo[1][2][3]>, as in C. |
1481 | |
1482 | =item Name "%s::%s" used only once: possible typo |
1483 | |
68dc0745 |
1484 | (W) Typographical errors often show up as unique variable names. |
1485 | If you had a good reason for having a unique name, then just mention |
1486 | it again somehow to suppress the message. The C<use vars> pragma is |
1487 | provided for just this purpose. |
a0d0e21e |
1488 | |
1489 | =item Negative length |
1490 | |
1491 | (F) You tried to do a read/write/send/recv operation with a buffer length |
1492 | that is less than 0. This is difficult to imagine. |
1493 | |
1494 | =item nested *?+ in regexp |
1495 | |
5f05dabc |
1496 | (F) You can't quantify a quantifier without intervening parentheses. So |
a0d0e21e |
1497 | things like ** or +* or ?* are illegal. |
1498 | |
5f05dabc |
1499 | Note, however, that the minimal matching quantifiers, C<*?>, C<+?>, and C<??> appear |
a0d0e21e |
1500 | to be nested quantifiers, but aren't. See L<perlre>. |
1501 | |
1502 | =item No #! line |
1503 | |
1504 | (F) The setuid emulator requires that scripts have a well-formed #! line |
1505 | even on machines that don't support the #! construct. |
1506 | |
1507 | =item No %s allowed while running setuid |
1508 | |
1509 | (F) Certain operations are deemed to be too insecure for a setuid or setgid |
1510 | script to even be allowed to attempt. Generally speaking there will be |
1511 | another way to do what you want that is, if not secure, at least securable. |
1512 | See L<perlsec>. |
1513 | |
1514 | =item No B<-e> allowed in setuid scripts |
1515 | |
1516 | (F) A setuid script can't be specified by the user. |
1517 | |
1518 | =item No comma allowed after %s |
1519 | |
1520 | (F) A list operator that has a filehandle or "indirect object" is not |
1521 | allowed to have a comma between that and the following arguments. |
1522 | Otherwise it'd be just another one of the arguments. |
1523 | |
0a753a76 |
1524 | One possible cause for this is that you expected to have imported a |
1525 | constant to your name space with B<use> or B<import> while no such |
1526 | importing took place, it may for example be that your operating system |
1527 | does not support that particular constant. Hopefully you did use an |
1528 | explicit import list for the constants you expect to see, please see |
1529 | L<perlfunc/use> and L<perlfunc/import>. While an explicit import list |
1530 | would probably have caught this error earlier it naturally does not |
1531 | remedy the fact that your operating system still does not support that |
1532 | constant. Maybe you have a typo in the constants of the symbol import |
1533 | list of B<use> or B<import> or in the constant name at the line where |
1534 | this error was triggered? |
1535 | |
748a9306 |
1536 | =item No command into which to pipe on command line |
1537 | |
1538 | (F) An error peculiar to VMS. Perl handles its own command line redirection, |
54310121 |
1539 | and found a '|' at the end of the command line, so it doesn't know where you |
748a9306 |
1540 | want to pipe the output from this command. |
1541 | |
a0d0e21e |
1542 | =item No DB::DB routine defined |
1543 | |
1544 | (F) The currently executing code was compiled with the B<-d> switch, |
1545 | but for some reason the perl5db.pl file (or some facsimile thereof) |
1546 | didn't define a routine to be called at the beginning of each |
1547 | statement. Which is odd, because the file should have been required |
1548 | automatically, and should have blown up the require if it didn't parse |
1549 | right. |
1550 | |
1551 | =item No dbm on this machine |
1552 | |
1553 | (P) This is counted as an internal error, because every machine should |
5f05dabc |
1554 | supply dbm nowadays, because Perl comes with SDBM. See L<SDBM_File>. |
a0d0e21e |
1555 | |
1556 | =item No DBsub routine |
1557 | |
1558 | (F) The currently executing code was compiled with the B<-d> switch, |
1559 | but for some reason the perl5db.pl file (or some facsimile thereof) |
1560 | didn't define a DB::sub routine to be called at the beginning of each |
1561 | ordinary subroutine call. |
1562 | |
8b1a09fc |
1563 | =item No error file after 2E<gt> or 2E<gt>E<gt> on command line |
748a9306 |
1564 | |
1565 | (F) An error peculiar to VMS. Perl handles its own command line redirection, |
8b1a09fc |
1566 | and found a '2E<gt>' or a '2E<gt>E<gt>' on the command line, but can't find |
1567 | the name of the file to which to write data destined for stderr. |
748a9306 |
1568 | |
8b1a09fc |
1569 | =item No input file after E<lt> on command line |
748a9306 |
1570 | |
1571 | (F) An error peculiar to VMS. Perl handles its own command line redirection, |
8b1a09fc |
1572 | and found a 'E<lt>' on the command line, but can't find the name of the file |
1573 | from which to read data for stdin. |
748a9306 |
1574 | |
8b1a09fc |
1575 | =item No output file after E<gt> on command line |
748a9306 |
1576 | |
1577 | (F) An error peculiar to VMS. Perl handles its own command line redirection, |
8b1a09fc |
1578 | and found a lone 'E<gt>' at the end of the command line, so it doesn't know |
54310121 |
1579 | where you wanted to redirect stdout. |
748a9306 |
1580 | |
8b1a09fc |
1581 | =item No output file after E<gt> or E<gt>E<gt> on command line |
748a9306 |
1582 | |
1583 | (F) An error peculiar to VMS. Perl handles its own command line redirection, |
8b1a09fc |
1584 | and found a 'E<gt>' or a 'E<gt>E<gt>' on the command line, but can't find the |
1585 | name of the file to which to write data destined for stdout. |
748a9306 |
1586 | |
a0d0e21e |
1587 | =item No Perl script found in input |
1588 | |
1589 | (F) You called C<perl -x>, but no line was found in the file beginning |
1590 | with #! and containing the word "perl". |
1591 | |
1592 | =item No setregid available |
1593 | |
1594 | (F) Configure didn't find anything resembling the setregid() call for |
1595 | your system. |
1596 | |
1597 | =item No setreuid available |
1598 | |
1599 | (F) Configure didn't find anything resembling the setreuid() call for |
1600 | your system. |
1601 | |
1602 | =item No space allowed after B<-I> |
1603 | |
1604 | (F) The argument to B<-I> must follow the B<-I> immediately with no |
1605 | intervening space. |
1606 | |
748a9306 |
1607 | =item No such pipe open |
1608 | |
1609 | (P) An error peculiar to VMS. The internal routine my_pclose() tried to |
1610 | close a pipe which hadn't been opened. This should have been caught earlier as |
1611 | an attempt to close an unopened filehandle. |
1612 | |
a0d0e21e |
1613 | =item No such signal: SIG%s |
1614 | |
1615 | (W) You specified a signal name as a subscript to %SIG that was not recognized. |
1616 | Say C<kill -l> in your shell to see the valid signal names on your system. |
1617 | |
1618 | =item Not a CODE reference |
1619 | |
1620 | (F) Perl was trying to evaluate a reference to a code value (that is, a |
1621 | subroutine), but found a reference to something else instead. You can |
1622 | use the ref() function to find out what kind of ref it really was. |
1623 | See also L<perlref>. |
1624 | |
1625 | =item Not a format reference |
1626 | |
1627 | (F) I'm not sure how you managed to generate a reference to an anonymous |
1628 | format, but this indicates you did, and that it didn't exist. |
1629 | |
1630 | =item Not a GLOB reference |
1631 | |
55497cff |
1632 | (F) Perl was trying to evaluate a reference to a "typeglob" (that is, |
a0d0e21e |
1633 | a symbol table entry that looks like C<*foo>), but found a reference to |
1634 | something else instead. You can use the ref() function to find out |
1635 | what kind of ref it really was. See L<perlref>. |
1636 | |
1637 | =item Not a HASH reference |
1638 | |
1639 | (F) Perl was trying to evaluate a reference to a hash value, but |
1640 | found a reference to something else instead. You can use the ref() |
1641 | function to find out what kind of ref it really was. See L<perlref>. |
1642 | |
1643 | =item Not a perl script |
1644 | |
1645 | (F) The setuid emulator requires that scripts have a well-formed #! line |
1646 | even on machines that don't support the #! construct. The line must |
1647 | mention perl. |
1648 | |
1649 | =item Not a SCALAR reference |
1650 | |
1651 | (F) Perl was trying to evaluate a reference to a scalar value, but |
1652 | found a reference to something else instead. You can use the ref() |
1653 | function to find out what kind of ref it really was. See L<perlref>. |
1654 | |
1655 | =item Not a subroutine reference |
1656 | |
1657 | (F) Perl was trying to evaluate a reference to a code value (that is, a |
1658 | subroutine), but found a reference to something else instead. You can |
1659 | use the ref() function to find out what kind of ref it really was. |
1660 | See also L<perlref>. |
1661 | |
e7ea3e70 |
1662 | =item Not a subroutine reference in overload table |
a0d0e21e |
1663 | |
1664 | (F) An attempt was made to specify an entry in an overloading table that |
8b1a09fc |
1665 | doesn't somehow point to a valid subroutine. See L<overload>. |
a0d0e21e |
1666 | |
1667 | =item Not an ARRAY reference |
1668 | |
1669 | (F) Perl was trying to evaluate a reference to an array value, but |
1670 | found a reference to something else instead. You can use the ref() |
1671 | function to find out what kind of ref it really was. See L<perlref>. |
1672 | |
1673 | =item Not enough arguments for %s |
1674 | |
1675 | (F) The function requires more arguments than you specified. |
1676 | |
1677 | =item Not enough format arguments |
1678 | |
1679 | (W) A format specified more picture fields than the next line supplied. |
1680 | See L<perlform>. |
1681 | |
1682 | =item Null filename used |
1683 | |
5f05dabc |
1684 | (F) You can't require the null filename, especially because on many machines |
a0d0e21e |
1685 | that means the current directory! See L<perlfunc/require>. |
1686 | |
55497cff |
1687 | =item Null picture in formline |
1688 | |
1689 | (F) The first argument to formline must be a valid format picture |
1690 | specification. It was found to be empty, which probably means you |
1691 | supplied it an uninitialized value. See L<perlform>. |
1692 | |
a0d0e21e |
1693 | =item NULL OP IN RUN |
1694 | |
1695 | (P) Some internal routine called run() with a null opcode pointer. |
1696 | |
1697 | =item Null realloc |
1698 | |
1699 | (P) An attempt was made to realloc NULL. |
1700 | |
1701 | =item NULL regexp argument |
1702 | |
5f05dabc |
1703 | (P) The internal pattern matching routines blew it big time. |
a0d0e21e |
1704 | |
1705 | =item NULL regexp parameter |
1706 | |
1707 | (P) The internal pattern matching routines are out of their gourd. |
1708 | |
fc36a67e |
1709 | =item Number too long |
1710 | |
1711 | (F) Perl limits the representation of decimal numbers in programs to about |
1712 | about 250 characters. You've exceeded that length. Future versions of |
1713 | Perl are likely to eliminate this arbitrary limitation. In the meantime, |
1714 | try using scientific notation (e.g. "1e6" instead of "1_000_000"). |
1715 | |
1930e939 |
1716 | =item Odd number of elements in hash assignment |
a0d0e21e |
1717 | |
1930e939 |
1718 | (S) You specified an odd number of elements to initialize a hash, which |
1719 | is odd, because hashes come in key/value pairs. |
a0d0e21e |
1720 | |
bbce6d69 |
1721 | =item Offset outside string |
1722 | |
1723 | (F) You tried to do a read/write/send/recv operation with an offset |
1724 | pointing outside the buffer. This is difficult to imagine. |
1725 | The sole exception to this is that C<sysread()>ing past the buffer |
1726 | will extend the buffer and zero pad the new area. |
1727 | |
a0d0e21e |
1728 | =item oops: oopsAV |
1729 | |
1730 | (S) An internal warning that the grammar is screwed up. |
1731 | |
1732 | =item oops: oopsHV |
1733 | |
1734 | (S) An internal warning that the grammar is screwed up. |
1735 | |
e7ea3e70 |
1736 | =item Operation `%s': no method found,%s |
44a8e56a |
1737 | |
e7ea3e70 |
1738 | (F) An attempt was made to perform an overloaded operation for which |
1739 | no handler was defined. While some handlers can be autogenerated in |
1740 | terms of other handlers, there is no default handler for any |
1741 | operation, unless C<fallback> overloading key is specified to be |
1742 | true. See L<overload>. |
44a8e56a |
1743 | |
748a9306 |
1744 | =item Operator or semicolon missing before %s |
1745 | |
1746 | (S) You used a variable or subroutine call where the parser was |
1747 | expecting an operator. The parser has assumed you really meant |
1748 | to use an operator, but this is highly likely to be incorrect. |
1749 | For example, if you say "*foo *foo" it will be interpreted as |
1750 | if you said "*foo * 'foo'". |
1751 | |
a0d0e21e |
1752 | =item Out of memory for yacc stack |
1753 | |
1754 | (F) The yacc parser wanted to grow its stack so it could continue parsing, |
1755 | but realloc() wouldn't give it more memory, virtual or otherwise. |
1756 | |
1757 | =item Out of memory! |
1758 | |
55497cff |
1759 | (X|F) The malloc() function returned 0, indicating there was insufficient |
54310121 |
1760 | remaining memory (or virtual memory) to satisfy the request. |
eff9c6e2 |
1761 | |
1762 | The request was judged to be small, so the possibility to trap it |
1763 | depends on the way perl was compiled. By default it is not trappable. |
1764 | However, if compiled for this, Perl may use the contents of C<$^M> as |
1765 | an emergency pool after die()ing with this message. In this case the |
55497cff |
1766 | error is trappable I<once>. |
1767 | |
1768 | =item Out of memory during request for %s |
1769 | |
1770 | (F) The malloc() function returned 0, indicating there was insufficient |
1771 | remaining memory (or virtual memory) to satisfy the request. However, |
1772 | the request was judged large enough (compile-time default is 64K), so |
1773 | a possibility to shut down by trapping this error is granted. |
1774 | |
a0d0e21e |
1775 | =item page overflow |
1776 | |
1777 | (W) A single call to write() produced more lines than can fit on a page. |
1778 | See L<perlform>. |
1779 | |
1780 | =item panic: ck_grep |
1781 | |
1782 | (P) Failed an internal consistency check trying to compile a grep. |
1783 | |
1784 | =item panic: ck_split |
1785 | |
1786 | (P) Failed an internal consistency check trying to compile a split. |
1787 | |
1788 | =item panic: corrupt saved stack index |
1789 | |
1790 | (P) The savestack was requested to restore more localized values than there |
1791 | are in the savestack. |
1792 | |
1793 | =item panic: die %s |
1794 | |
1795 | (P) We popped the context stack to an eval context, and then discovered |
1796 | it wasn't an eval context. |
1797 | |
1798 | =item panic: do_match |
1799 | |
1800 | (P) The internal pp_match() routine was called with invalid operational data. |
1801 | |
1802 | =item panic: do_split |
1803 | |
1804 | (P) Something terrible went wrong in setting up for the split. |
1805 | |
1806 | =item panic: do_subst |
1807 | |
1808 | (P) The internal pp_subst() routine was called with invalid operational data. |
1809 | |
1810 | =item panic: do_trans |
1811 | |
1812 | (P) The internal do_trans() routine was called with invalid operational data. |
1813 | |
c635e13b |
1814 | =item panic: frexp |
1815 | |
1816 | (P) The library function frexp() failed, making printf("%f") impossible. |
1817 | |
a0d0e21e |
1818 | =item panic: goto |
1819 | |
1820 | (P) We popped the context stack to a context with the specified label, |
1821 | and then discovered it wasn't a context we know how to do a goto in. |
1822 | |
1823 | =item panic: INTERPCASEMOD |
1824 | |
1825 | (P) The lexer got into a bad state at a case modifier. |
1826 | |
1827 | =item panic: INTERPCONCAT |
1828 | |
1829 | (P) The lexer got into a bad state parsing a string with brackets. |
1830 | |
1831 | =item panic: last |
1832 | |
1833 | (P) We popped the context stack to a block context, and then discovered |
1834 | it wasn't a block context. |
1835 | |
1836 | =item panic: leave_scope clearsv |
1837 | |
5f05dabc |
1838 | (P) A writable lexical variable became read-only somehow within the scope. |
a0d0e21e |
1839 | |
1840 | =item panic: leave_scope inconsistency |
1841 | |
1842 | (P) The savestack probably got out of sync. At least, there was an |
1843 | invalid enum on the top of it. |
1844 | |
1845 | =item panic: malloc |
1846 | |
1847 | (P) Something requested a negative number of bytes of malloc. |
1848 | |
1849 | =item panic: mapstart |
1850 | |
1851 | (P) The compiler is screwed up with respect to the map() function. |
1852 | |
1853 | =item panic: null array |
1854 | |
1855 | (P) One of the internal array routines was passed a null AV pointer. |
1856 | |
1857 | =item panic: pad_alloc |
1858 | |
1859 | (P) The compiler got confused about which scratch pad it was allocating |
1860 | and freeing temporaries and lexicals from. |
1861 | |
1862 | =item panic: pad_free curpad |
1863 | |
1864 | (P) The compiler got confused about which scratch pad it was allocating |
1865 | and freeing temporaries and lexicals from. |
1866 | |
1867 | =item panic: pad_free po |
1868 | |
1869 | (P) An invalid scratch pad offset was detected internally. |
1870 | |
1871 | =item panic: pad_reset curpad |
1872 | |
1873 | (P) The compiler got confused about which scratch pad it was allocating |
1874 | and freeing temporaries and lexicals from. |
1875 | |
1876 | =item panic: pad_sv po |
1877 | |
1878 | (P) An invalid scratch pad offset was detected internally. |
1879 | |
1880 | =item panic: pad_swipe curpad |
1881 | |
1882 | (P) The compiler got confused about which scratch pad it was allocating |
1883 | and freeing temporaries and lexicals from. |
1884 | |
1885 | =item panic: pad_swipe po |
1886 | |
1887 | (P) An invalid scratch pad offset was detected internally. |
1888 | |
1889 | =item panic: pp_iter |
1890 | |
1891 | (P) The foreach iterator got called in a non-loop context frame. |
1892 | |
1893 | =item panic: realloc |
1894 | |
1895 | (P) Something requested a negative number of bytes of realloc. |
1896 | |
1897 | =item panic: restartop |
1898 | |
1899 | (P) Some internal routine requested a goto (or something like it), and |
1900 | didn't supply the destination. |
1901 | |
1902 | =item panic: return |
1903 | |
1904 | (P) We popped the context stack to a subroutine or eval context, and |
1905 | then discovered it wasn't a subroutine or eval context. |
1906 | |
1907 | =item panic: scan_num |
1908 | |
1909 | (P) scan_num() got called on something that wasn't a number. |
1910 | |
1911 | =item panic: sv_insert |
1912 | |
1913 | (P) The sv_insert() routine was told to remove more string than there |
1914 | was string. |
1915 | |
1916 | =item panic: top_env |
1917 | |
1918 | (P) The compiler attempted to do a goto, or something weird like that. |
1919 | |
1920 | =item panic: yylex |
1921 | |
1922 | (P) The lexer got into a bad state while processing a case modifier. |
1923 | |
7b8d334a |
1924 | =item Parentheses missing around "%s" list |
a0d0e21e |
1925 | |
1926 | (W) You said something like |
1927 | |
1928 | my $foo, $bar = @_; |
1929 | |
1930 | when you meant |
1931 | |
1932 | my ($foo, $bar) = @_; |
1933 | |
1934 | Remember that "my" and "local" bind closer than comma. |
1935 | |
1936 | =item Perl %3.3f required--this is only version %s, stopped |
1937 | |
1938 | (F) The module in question uses features of a version of Perl more recent |
1939 | than the currently running version. How long has it been since you upgraded, |
1940 | anyway? See L<perlfunc/require>. |
1941 | |
1942 | =item Permission denied |
1943 | |
1944 | (F) The setuid emulator in suidperl decided you were up to no good. |
1945 | |
748a9306 |
1946 | =item pid %d not a child |
1947 | |
1948 | (W) A warning peculiar to VMS. Waitpid() was asked to wait for a process which |
1949 | isn't a subprocess of the current process. While this is fine from VMS' |
1950 | perspective, it's probably not what you intended. |
1951 | |
a0d0e21e |
1952 | =item POSIX getpgrp can't take an argument |
1953 | |
1954 | (F) Your C compiler uses POSIX getpgrp(), which takes no argument, unlike |
1955 | the BSD version, which takes a pid. |
1956 | |
bbce6d69 |
1957 | =item Possible attempt to put comments in qw() list |
1958 | |
774d564b |
1959 | (W) qw() lists contain items separated by whitespace; as with literal |
1960 | strings, comment characters are not ignored, but are instead treated |
1961 | as literal data. (You may have used different delimiters than the |
7b8d334a |
1962 | parentheses shown here; braces are also frequently used.) |
bbce6d69 |
1963 | |
774d564b |
1964 | You probably wrote something like this: |
1965 | |
54310121 |
1966 | @list = qw( |
774d564b |
1967 | a # a comment |
bbce6d69 |
1968 | b # another comment |
774d564b |
1969 | ); |
bbce6d69 |
1970 | |
1971 | when you should have written this: |
1972 | |
774d564b |
1973 | @list = qw( |
54310121 |
1974 | a |
1975 | b |
774d564b |
1976 | ); |
1977 | |
1978 | If you really want comments, build your list the |
1979 | old-fashioned way, with quotes and commas: |
1980 | |
1981 | @list = ( |
1982 | 'a', # a comment |
1983 | 'b', # another comment |
1984 | ); |
bbce6d69 |
1985 | |
1986 | =item Possible attempt to separate words with commas |
1987 | |
774d564b |
1988 | (W) qw() lists contain items separated by whitespace; therefore commas |
68dc0745 |
1989 | aren't needed to separate the items. (You may have used different |
774d564b |
1990 | delimiters than the parentheses shown here; braces are also frequently |
1991 | used.) |
bbce6d69 |
1992 | |
54310121 |
1993 | You probably wrote something like this: |
bbce6d69 |
1994 | |
774d564b |
1995 | qw! a, b, c !; |
1996 | |
1997 | which puts literal commas into some of the list items. Write it without |
1998 | commas if you don't want them to appear in your data: |
bbce6d69 |
1999 | |
774d564b |
2000 | qw! a b c !; |
bbce6d69 |
2001 | |
a0d0e21e |
2002 | =item Possible memory corruption: %s overflowed 3rd argument |
2003 | |
2004 | (F) An ioctl() or fcntl() returned more than Perl was bargaining for. |
2005 | Perl guesses a reasonable buffer size, but puts a sentinel byte at the |
2006 | end of the buffer just in case. This sentinel byte got clobbered, and |
2007 | Perl assumes that memory is now corrupted. See L<perlfunc/ioctl>. |
2008 | |
2009 | =item Precedence problem: open %s should be open(%s) |
2010 | |
2011 | (S) The old irregular construct |
cb1a09d0 |
2012 | |
a0d0e21e |
2013 | open FOO || die; |
2014 | |
2015 | is now misinterpreted as |
2016 | |
2017 | open(FOO || die); |
2018 | |
68dc0745 |
2019 | because of the strict regularization of Perl 5's grammar into unary |
2020 | and list operators. (The old open was a little of both.) You must |
2021 | put parentheses around the filehandle, or use the new "or" operator |
2022 | instead of "||". |
a0d0e21e |
2023 | |
2024 | =item print on closed filehandle %s |
2025 | |
2026 | (W) The filehandle you're printing on got itself closed sometime before now. |
2027 | Check your logic flow. |
2028 | |
2029 | =item printf on closed filehandle %s |
2030 | |
2031 | (W) The filehandle you're writing to got itself closed sometime before now. |
2032 | Check your logic flow. |
2033 | |
2034 | =item Probable precedence problem on %s |
2035 | |
54310121 |
2036 | (W) The compiler found a bareword where it expected a conditional, |
a0d0e21e |
2037 | which often indicates that an || or && was parsed as part of the |
2038 | last argument of the previous construct, for example: |
2039 | |
2040 | open FOO || die; |
2041 | |
3fe9a6f1 |
2042 | =item Prototype mismatch: %s vs %s |
4633a7c4 |
2043 | |
3fe9a6f1 |
2044 | (S) The subroutine being declared or defined had previously been declared |
2045 | or defined with a different function prototype. |
4633a7c4 |
2046 | |
8b1a09fc |
2047 | =item Read on closed filehandle E<lt>%sE<gt> |
a0d0e21e |
2048 | |
2049 | (W) The filehandle you're reading from got itself closed sometime before now. |
2050 | Check your logic flow. |
2051 | |
2052 | =item Reallocation too large: %lx |
2053 | |
54310121 |
2054 | (F) You can't allocate more than 64K on an MS-DOS machine. |
a0d0e21e |
2055 | |
2056 | =item Recompile perl with B<-D>DEBUGGING to use B<-D> switch |
2057 | |
2058 | (F) You can't use the B<-D> option unless the code to produce the |
2059 | desired output is compiled into Perl, which entails some overhead, |
2060 | which is why it's currently left out of your copy. |
2061 | |
2062 | =item Recursive inheritance detected |
2063 | |
2064 | (F) More than 100 levels of inheritance were used. Probably indicates |
2065 | an unintended loop in your inheritance hierarchy. |
2066 | |
1930e939 |
2067 | =item Reference found where even-sized list expected |
2068 | |
2069 | (W) You gave a single reference where Perl was expecting a list with |
2070 | an even number of elements (for assignment to a hash). This |
2071 | usually means that you used the anon hash constructor when you meant |
2072 | to use parens. In any case, a hash requires key/value B<pairs>. |
7b8d334a |
2073 | |
2074 | %hash = { one => 1, two => 2, }; # WRONG |
2075 | %hash = [ qw/ an anon array / ]; # WRONG |
2076 | %hash = ( one => 1, two => 2, ); # right |
2077 | %hash = qw( one 1 two 2 ); # also fine |
2078 | |
a0d0e21e |
2079 | =item Reference miscount in sv_replace() |
2080 | |
2081 | (W) The internal sv_replace() function was handed a new SV with a |
2082 | reference count of other than 1. |
2083 | |
fb73857a |
2084 | =item regexp *+ operand could be empty |
2085 | |
2086 | (F) The part of the regexp subject to either the * or + quantifier |
2087 | could match an empty string. |
2088 | |
a0d0e21e |
2089 | =item regexp memory corruption |
2090 | |
2091 | (P) The regular expression engine got confused by what the regular |
2092 | expression compiler gave it. |
2093 | |
2094 | =item regexp out of space |
2095 | |
2096 | (P) A "can't happen" error, because safemalloc() should have caught it earlier. |
2097 | |
2098 | =item regexp too big |
2099 | |
2ba9eb46 |
2100 | (F) The current implementation of regular expressions uses shorts as |
a0d0e21e |
2101 | address offsets within a string. Unfortunately this means that if |
2102 | the regular expression compiles to longer than 32767, it'll blow up. |
2103 | Usually when you want a regular expression this big, there is a better |
2104 | way to do it with multiple statements. See L<perlre>. |
2105 | |
2106 | =item Reversed %s= operator |
2107 | |
2108 | (W) You wrote your assignment operator backwards. The = must always |
2109 | comes last, to avoid ambiguity with subsequent unary operators. |
2110 | |
2111 | =item Runaway format |
2112 | |
2113 | (F) Your format contained the ~~ repeat-until-blank sequence, but it |
2114 | produced 200 lines at once, and the 200th line looked exactly like the |
2115 | 199th line. Apparently you didn't arrange for the arguments to exhaust |
2116 | themselves, either by using ^ instead of @ (for scalar variables), or by |
2117 | shifting or popping (for array variables). See L<perlform>. |
2118 | |
2119 | =item Scalar value @%s[%s] better written as $%s[%s] |
2120 | |
a6006777 |
2121 | (W) You've used an array slice (indicated by @) to select a single element of |
a0d0e21e |
2122 | an array. Generally it's better to ask for a scalar value (indicated by $). |
8b1a09fc |
2123 | The difference is that C<$foo[&bar]> always behaves like a scalar, both when |
2124 | assigning to it and when evaluating its argument, while C<@foo[&bar]> behaves |
a0d0e21e |
2125 | like a list when you assign to it, and provides a list context to its |
5f05dabc |
2126 | subscript, which can do weird things if you're expecting only one subscript. |
a0d0e21e |
2127 | |
748a9306 |
2128 | On the other hand, if you were actually hoping to treat the array |
5f05dabc |
2129 | element as a list, you need to look into how references work, because |
748a9306 |
2130 | Perl will not magically convert between scalars and lists for you. See |
2131 | L<perlref>. |
2132 | |
a6006777 |
2133 | =item Scalar value @%s{%s} better written as $%s{%s} |
2134 | |
2135 | (W) You've used a hash slice (indicated by @) to select a single element of |
2136 | a hash. Generally it's better to ask for a scalar value (indicated by $). |
2137 | The difference is that C<$foo{&bar}> always behaves like a scalar, both when |
2138 | assigning to it and when evaluating its argument, while C<@foo{&bar}> behaves |
2139 | like a list when you assign to it, and provides a list context to its |
2140 | subscript, which can do weird things if you're expecting only one subscript. |
2141 | |
2142 | On the other hand, if you were actually hoping to treat the hash |
2143 | element as a list, you need to look into how references work, because |
2144 | Perl will not magically convert between scalars and lists for you. See |
2145 | L<perlref>. |
2146 | |
a0d0e21e |
2147 | =item Script is not setuid/setgid in suidperl |
2148 | |
54310121 |
2149 | (F) Oddly, the suidperl program was invoked on a script without a setuid |
2150 | or setgid bit set. This doesn't make much sense. |
a0d0e21e |
2151 | |
2152 | =item Search pattern not terminated |
2153 | |
2154 | (F) The lexer couldn't find the final delimiter of a // or m{} |
2155 | construct. Remember that bracketing delimiters count nesting level. |
fb73857a |
2156 | Missing the leading C<$> from a variable C<$m> may cause this error. |
a0d0e21e |
2157 | |
96e4d5b1 |
2158 | =item %sseek() on unopened file |
a0d0e21e |
2159 | |
96e4d5b1 |
2160 | (W) You tried to use the seek() or sysseek() function on a filehandle that |
2161 | was either never opened or has since been closed. |
a0d0e21e |
2162 | |
2163 | =item select not implemented |
2164 | |
2165 | (F) This machine doesn't implement the select() system call. |
2166 | |
2167 | =item sem%s not implemented |
2168 | |
2169 | (F) You don't have System V semaphore IPC on your system. |
2170 | |
2171 | =item semi-panic: attempt to dup freed string |
2172 | |
2173 | (S) The internal newSVsv() routine was called to duplicate a scalar |
2174 | that had previously been marked as free. |
2175 | |
2176 | =item Semicolon seems to be missing |
2177 | |
2178 | (W) A nearby syntax error was probably caused by a missing semicolon, |
2179 | or possibly some other missing operator, such as a comma. |
2180 | |
2181 | =item Send on closed socket |
2182 | |
2183 | (W) The filehandle you're sending to got itself closed sometime before now. |
2184 | Check your logic flow. |
2185 | |
1b1626e4 |
2186 | =item Sequence (? incomplete |
7b8d334a |
2187 | |
1b1626e4 |
2188 | (F) A regular expression ended with an incomplete extension (?. |
2189 | See L<perlre>. |
2190 | |
a0d0e21e |
2191 | =item Sequence (?#... not terminated |
2192 | |
2193 | (F) A regular expression comment must be terminated by a closing |
5f05dabc |
2194 | parenthesis. Embedded parentheses aren't allowed. See L<perlre>. |
a0d0e21e |
2195 | |
2196 | =item Sequence (?%s...) not implemented |
2197 | |
2198 | (F) A proposed regular expression extension has the character reserved |
2199 | but has not yet been written. See L<perlre>. |
2200 | |
2201 | =item Sequence (?%s...) not recognized |
2202 | |
2203 | (F) You used a regular expression extension that doesn't make sense. |
2204 | See L<perlre>. |
2205 | |
a5f75d66 |
2206 | =item Server error |
2207 | |
9607fc9c |
2208 | Also known as "500 Server error". |
2209 | |
2210 | B<This is a CGI error, not a Perl error>. |
2211 | |
2212 | You need to make sure your script is executable, is accessible by the user |
2213 | CGI is running the script under (which is probably not the user account you |
2214 | tested it under), does not rely on any environment variables (like PATH) |
2215 | from the user it isn't running under, and isn't in a location where the CGI |
2216 | server can't find it, basically, more or less. Please see the following |
2217 | for more information: |
2218 | |
2219 | http://www.perl.com/perl/faq/idiots-guide.html |
2220 | http://www.perl.com/perl/faq/perl-cgi-faq.html |
2221 | ftp://rtfm.mit.edu/pub/usenet/news.answers/www/cgi-faq |
2222 | http://hoohoo.ncsa.uiuc.edu/cgi/interface.html |
2223 | http://www-genome.wi.mit.edu/WWW/faqs/www-security-faq.html |
a5f75d66 |
2224 | |
a0d0e21e |
2225 | =item setegid() not implemented |
2226 | |
8b1a09fc |
2227 | (F) You tried to assign to C<$)>, and your operating system doesn't support |
a0d0e21e |
2228 | the setegid() system call (or equivalent), or at least Configure didn't |
2229 | think so. |
2230 | |
2231 | =item seteuid() not implemented |
2232 | |
8b1a09fc |
2233 | (F) You tried to assign to C<$E<gt>>, and your operating system doesn't support |
a0d0e21e |
2234 | the seteuid() system call (or equivalent), or at least Configure didn't |
2235 | think so. |
2236 | |
2237 | =item setrgid() not implemented |
2238 | |
8b1a09fc |
2239 | (F) You tried to assign to C<$(>, and your operating system doesn't support |
a0d0e21e |
2240 | the setrgid() system call (or equivalent), or at least Configure didn't |
2241 | think so. |
2242 | |
2243 | =item setruid() not implemented |
2244 | |
1f8d2005 |
2245 | (F) You tried to assign to C<$E<lt>>, and your operating system doesn't support |
a0d0e21e |
2246 | the setruid() system call (or equivalent), or at least Configure didn't |
2247 | think so. |
2248 | |
2249 | =item Setuid/gid script is writable by world |
2250 | |
2251 | (F) The setuid emulator won't run a script that is writable by the world, |
2252 | because the world might have written on it already. |
2253 | |
2254 | =item shm%s not implemented |
2255 | |
2256 | (F) You don't have System V shared memory IPC on your system. |
2257 | |
2258 | =item shutdown() on closed fd |
2259 | |
2260 | (W) You tried to do a shutdown on a closed socket. Seems a bit superfluous. |
2261 | |
f86702cc |
2262 | =item SIG%s handler "%s" not defined |
a0d0e21e |
2263 | |
2264 | (W) The signal handler named in %SIG doesn't, in fact, exist. Perhaps you |
2265 | put it into the wrong package? |
2266 | |
2267 | =item sort is now a reserved word |
2268 | |
2269 | (F) An ancient error message that almost nobody ever runs into anymore. |
2270 | But before sort was a keyword, people sometimes used it as a filehandle. |
2271 | |
2272 | =item Sort subroutine didn't return a numeric value |
2273 | |
2274 | (F) A sort comparison routine must return a number. You probably blew |
4633a7c4 |
2275 | it by not using C<E<lt>=E<gt>> or C<cmp>, or by not using them correctly. |
a0d0e21e |
2276 | See L<perlfunc/sort>. |
2277 | |
2278 | =item Sort subroutine didn't return single value |
2279 | |
2280 | (F) A sort comparison subroutine may not return a list value with more |
2281 | or less than one element. See L<perlfunc/sort>. |
2282 | |
2283 | =item Split loop |
2284 | |
2285 | (P) The split was looping infinitely. (Obviously, a split shouldn't iterate |
2286 | more times than there are characters of input, which is what happened.) |
2287 | See L<perlfunc/split>. |
2288 | |
8b1a09fc |
2289 | =item Stat on unopened file E<lt>%sE<gt> |
a0d0e21e |
2290 | |
2291 | (W) You tried to use the stat() function (or an equivalent file test) |
54310121 |
2292 | on a filehandle that was either never opened or has since been closed. |
a0d0e21e |
2293 | |
2294 | =item Statement unlikely to be reached |
2295 | |
2296 | (W) You did an exec() with some statement after it other than a die(). |
2297 | This is almost always an error, because exec() never returns unless |
2298 | there was a failure. You probably wanted to use system() instead, |
2299 | which does return. To suppress this warning, put the exec() in a block |
2300 | by itself. |
2301 | |
e7ea3e70 |
2302 | =item Stub found while resolving method `%s' overloading `%s' in package `%s' |
2303 | |
2304 | (P) Overloading resolution over @ISA tree may be broken by importation stubs. |
2305 | Stubs should never be implicitely created, but explicit calls to C<can> |
2306 | may break this. |
2307 | |
a0d0e21e |
2308 | =item Subroutine %s redefined |
2309 | |
2310 | (W) You redefined a subroutine. To suppress this warning, say |
2311 | |
2312 | { |
2313 | local $^W = 0; |
2314 | eval "sub name { ... }"; |
2315 | } |
2316 | |
2317 | =item Substitution loop |
2318 | |
2319 | (P) The substitution was looping infinitely. (Obviously, a |
2320 | substitution shouldn't iterate more times than there are characters of |
68dc0745 |
2321 | input, which is what happened.) See the discussion of substitution in |
5f05dabc |
2322 | L<perlop/"Quote and Quote-like Operators">. |
a0d0e21e |
2323 | |
2324 | =item Substitution pattern not terminated |
2325 | |
2326 | (F) The lexer couldn't find the interior delimiter of a s/// or s{}{} |
2327 | construct. Remember that bracketing delimiters count nesting level. |
fb73857a |
2328 | Missing the leading C<$> from variable C<$s> may cause this error. |
a0d0e21e |
2329 | |
2330 | =item Substitution replacement not terminated |
2331 | |
2332 | (F) The lexer couldn't find the final delimiter of a s/// or s{}{} |
2333 | construct. Remember that bracketing delimiters count nesting level. |
fb73857a |
2334 | Missing the leading C<$> from variable C<$s> may cause this error. |
a0d0e21e |
2335 | |
2336 | =item substr outside of string |
2337 | |
3e3baf6d |
2338 | (S),(W) You tried to reference a substr() that pointed outside of a |
2339 | string. That is, the absolute value of the offset was larger than the |
2340 | length of the string. See L<perlfunc/substr>. This warning is |
2341 | mandatory if substr is used in an lvalue context (as the left hand side |
2342 | of an assignment or as a subroutine argument for example). |
a0d0e21e |
2343 | |
f86702cc |
2344 | =item suidperl is no longer needed since %s |
a0d0e21e |
2345 | |
2346 | (F) Your Perl was compiled with B<-D>SETUID_SCRIPTS_ARE_SECURE_NOW, but a |
2347 | version of the setuid emulator somehow got run anyway. |
2348 | |
2349 | =item syntax error |
2350 | |
2351 | (F) Probably means you had a syntax error. Common reasons include: |
2352 | |
2353 | A keyword is misspelled. |
2354 | A semicolon is missing. |
2355 | A comma is missing. |
2356 | An opening or closing parenthesis is missing. |
2357 | An opening or closing brace is missing. |
2358 | A closing quote is missing. |
2359 | |
2360 | Often there will be another error message associated with the syntax |
2361 | error giving more information. (Sometimes it helps to turn on B<-w>.) |
2362 | The error message itself often tells you where it was in the line when |
2363 | it decided to give up. Sometimes the actual error is several tokens |
5f05dabc |
2364 | before this, because Perl is good at understanding random input. |
a0d0e21e |
2365 | Occasionally the line number may be misleading, and once in a blue moon |
2366 | the only way to figure out what's triggering the error is to call |
2367 | C<perl -c> repeatedly, chopping away half the program each time to see |
2368 | if the error went away. Sort of the cybernetic version of S<20 questions>. |
2369 | |
cb1a09d0 |
2370 | =item syntax error at line %d: `%s' unexpected |
2371 | |
8b1a09fc |
2372 | (A) You've accidentally run your script through the Bourne shell |
3a52c276 |
2373 | instead of Perl. Check the #! line, or manually feed your script |
cb1a09d0 |
2374 | into Perl yourself. |
2375 | |
a0d0e21e |
2376 | =item System V IPC is not implemented on this machine |
2377 | |
5f05dabc |
2378 | (F) You tried to do something with a function beginning with "sem", "shm", |
a0d0e21e |
2379 | or "msg". See L<perlfunc/semctl>, for example. |
2380 | |
2381 | =item Syswrite on closed filehandle |
2382 | |
2383 | (W) The filehandle you're writing to got itself closed sometime before now. |
2384 | Check your logic flow. |
2385 | |
fc36a67e |
2386 | =item Target of goto is too deeply nested |
2387 | |
2388 | (F) You tried to use C<goto> to reach a label that was too deeply |
2389 | nested for Perl to reach. Perl is doing you a favor by refusing. |
2390 | |
8903cb82 |
2391 | =item tell() on unopened file |
a0d0e21e |
2392 | |
8903cb82 |
2393 | (W) You tried to use the tell() function on a filehandle that was either |
2394 | never opened or has since been closed. |
a0d0e21e |
2395 | |
8b1a09fc |
2396 | =item Test on unopened file E<lt>%sE<gt> |
a0d0e21e |
2397 | |
2398 | (W) You tried to invoke a file test operator on a filehandle that isn't |
2399 | open. Check your logic. See also L<perlfunc/-X>. |
2400 | |
2401 | =item That use of $[ is unsupported |
2402 | |
8b1a09fc |
2403 | (F) Assignment to C<$[> is now strictly circumscribed, and interpreted as |
5f05dabc |
2404 | a compiler directive. You may say only one of |
a0d0e21e |
2405 | |
2406 | $[ = 0; |
2407 | $[ = 1; |
2408 | ... |
2409 | local $[ = 0; |
2410 | local $[ = 1; |
2411 | ... |
2412 | |
2413 | This is to prevent the problem of one module changing the array base |
2414 | out from under another module inadvertently. See L<perlvar/$[>. |
2415 | |
2416 | =item The %s function is unimplemented |
2417 | |
2418 | The function indicated isn't implemented on this architecture, according |
2419 | to the probings of Configure. |
2420 | |
f86702cc |
2421 | =item The crypt() function is unimplemented due to excessive paranoia |
a0d0e21e |
2422 | |
2423 | (F) Configure couldn't find the crypt() function on your machine, |
2424 | probably because your vendor didn't supply it, probably because they |
8b1a09fc |
2425 | think the U.S. Government thinks it's a secret, or at least that they |
a0d0e21e |
2426 | will continue to pretend that it is. And if you quote me on that, I |
2427 | will deny it. |
2428 | |
2429 | =item The stat preceding C<-l _> wasn't an lstat |
2430 | |
2431 | (F) It makes no sense to test the current stat buffer for symbolic linkhood |
2432 | if the last stat that wrote to the stat buffer already went past |
2433 | the symlink to get to the real file. Use an actual filename instead. |
2434 | |
2435 | =item times not implemented |
2436 | |
2437 | (F) Your version of the C library apparently doesn't do times(). I suspect |
2438 | you're not running on Unix. |
2439 | |
2440 | =item Too few args to syscall |
2441 | |
2442 | (F) There has to be at least one argument to syscall() to specify the |
2443 | system call to call, silly dilly. |
2444 | |
9607fc9c |
2445 | =item Too late for "B<-T>" option |
2446 | |
2447 | (X) The #! line (or local equivalent) in a Perl script contains the |
8cc95fdb |
2448 | B<-T> option, but Perl was not invoked with B<-T> in its command line. |
2449 | This is an error because, by the time Perl discovers a B<-T> in a |
2450 | script, it's too late to properly taint everything from the environment. |
2451 | So Perl gives up. |
f86702cc |
2452 | |
9607fc9c |
2453 | If the Perl script is being executed as a command using the #! |
2454 | mechanism (or its local equivalent), this error can usually be fixed |
2455 | by editing the #! line so that the B<-T> option is a part of Perl's |
2456 | first argument: e.g. change C<perl -n -T> to C<perl -T -n>. |
f86702cc |
2457 | |
9607fc9c |
2458 | If the Perl script is being executed as C<perl scriptname>, then the |
2459 | B<-T> option must appear on the command line: C<perl -T scriptname>. |
f86702cc |
2460 | |
8cc95fdb |
2461 | =item Too late for "-%s" option |
2462 | |
2463 | (X) The #! line (or local equivalent) in a Perl script contains the |
2464 | B<-M> or B<-m> option. This is an error because B<-M> and B<-m> options |
2465 | are not intended for use inside scripts. Use the C<use> pragma instead. |
2466 | |
cb1a09d0 |
2467 | =item Too many ('s |
2468 | |
2469 | =item Too many )'s |
2470 | |
2471 | (A) You've accidentally run your script through B<csh> instead |
3a52c276 |
2472 | of Perl. Check the #! line, or manually feed your script into |
2473 | Perl yourself. |
cb1a09d0 |
2474 | |
a0d0e21e |
2475 | =item Too many args to syscall |
2476 | |
5f05dabc |
2477 | (F) Perl supports a maximum of only 14 args to syscall(). |
a0d0e21e |
2478 | |
2479 | =item Too many arguments for %s |
2480 | |
2481 | (F) The function requires fewer arguments than you specified. |
2482 | |
2483 | =item trailing \ in regexp |
2484 | |
2485 | (F) The regular expression ends with an unbackslashed backslash. Backslash |
2486 | it. See L<perlre>. |
2487 | |
2c268ad5 |
2488 | =item Transliteration pattern not terminated |
a0d0e21e |
2489 | |
2490 | (F) The lexer couldn't find the interior delimiter of a tr/// or tr[][] |
fb73857a |
2491 | or y/// or y[][] construct. Missing the leading C<$> from variables |
2492 | C<$tr> or C<$y> may cause this error. |
a0d0e21e |
2493 | |
2c268ad5 |
2494 | =item Transliteration replacement not terminated |
a0d0e21e |
2495 | |
2496 | (F) The lexer couldn't find the final delimiter of a tr/// or tr[][] |
2497 | construct. |
2498 | |
2499 | =item truncate not implemented |
2500 | |
2501 | (F) Your machine doesn't implement a file truncation mechanism that |
2502 | Configure knows about. |
2503 | |
2504 | =item Type of arg %d to %s must be %s (not %s) |
2505 | |
2506 | (F) This function requires the argument in that position to be of a |
8b1a09fc |
2507 | certain type. Arrays must be @NAME or C<@{EXPR}>. Hashes must be |
2508 | %NAME or C<%{EXPR}>. No implicit dereferencing is allowed--use the |
a0d0e21e |
2509 | {EXPR} forms as an explicit dereference. See L<perlref>. |
2510 | |
2511 | =item umask: argument is missing initial 0 |
2512 | |
5f05dabc |
2513 | (W) A umask of 222 is incorrect. It should be 0222, because octal literals |
a0d0e21e |
2514 | always start with 0 in Perl, as in C. |
2515 | |
4633a7c4 |
2516 | =item Unable to create sub named "%s" |
2517 | |
2518 | (F) You attempted to create or access a subroutine with an illegal name. |
2519 | |
a0d0e21e |
2520 | =item Unbalanced context: %d more PUSHes than POPs |
2521 | |
2522 | (W) The exit code detected an internal inconsistency in how many execution |
2523 | contexts were entered and left. |
2524 | |
2525 | =item Unbalanced saves: %d more saves than restores |
2526 | |
2527 | (W) The exit code detected an internal inconsistency in how many |
2528 | values were temporarily localized. |
2529 | |
2530 | =item Unbalanced scopes: %d more ENTERs than LEAVEs |
2531 | |
2532 | (W) The exit code detected an internal inconsistency in how many blocks |
2533 | were entered and left. |
2534 | |
2535 | =item Unbalanced tmps: %d more allocs than frees |
2536 | |
2537 | (W) The exit code detected an internal inconsistency in how many mortal |
2538 | scalars were allocated and freed. |
2539 | |
2540 | =item Undefined format "%s" called |
2541 | |
2542 | (F) The format indicated doesn't seem to exist. Perhaps it's really in |
2543 | another package? See L<perlform>. |
2544 | |
2545 | =item Undefined sort subroutine "%s" called |
2546 | |
2547 | (F) The sort comparison routine specified doesn't seem to exist. Perhaps |
2548 | it's in a different package? See L<perlfunc/sort>. |
2549 | |
2550 | =item Undefined subroutine &%s called |
2551 | |
2552 | (F) The subroutine indicated hasn't been defined, or if it was, it |
2553 | has since been undefined. |
2554 | |
2555 | =item Undefined subroutine called |
2556 | |
2557 | (F) The anonymous subroutine you're trying to call hasn't been defined, |
2558 | or if it was, it has since been undefined. |
2559 | |
2560 | =item Undefined subroutine in sort |
2561 | |
2562 | (F) The sort comparison routine specified is declared but doesn't seem to |
2563 | have been defined yet. See L<perlfunc/sort>. |
2564 | |
4633a7c4 |
2565 | =item Undefined top format "%s" called |
2566 | |
2567 | (F) The format indicated doesn't seem to exist. Perhaps it's really in |
2568 | another package? See L<perlform>. |
2569 | |
20408e3c |
2570 | =item Undefined value assigned to typeglob |
2571 | |
2572 | (W) An undefined value was assigned to a typeglob, a la C<*foo = undef>. |
2573 | This does nothing. It's possible that you really mean C<undef *foo>. |
2574 | |
a0d0e21e |
2575 | =item unexec of %s into %s failed! |
2576 | |
2577 | (F) The unexec() routine failed for some reason. See your local FSF |
2578 | representative, who probably put it there in the first place. |
2579 | |
2580 | =item Unknown BYTEORDER |
2581 | |
5f05dabc |
2582 | (F) There are no byte-swapping functions for a machine with this byte order. |
a0d0e21e |
2583 | |
2584 | =item unmatched () in regexp |
2585 | |
2586 | (F) Unbackslashed parentheses must always be balanced in regular |
2587 | expressions. If you're a vi user, the % key is valuable for finding |
5f05dabc |
2588 | the matching parenthesis. See L<perlre>. |
a0d0e21e |
2589 | |
2590 | =item Unmatched right bracket |
2591 | |
2592 | (F) The lexer counted more closing curly brackets (braces) than opening |
2593 | ones, so you're probably missing an opening bracket. As a general |
2594 | rule, you'll find the missing one (so to speak) near the place you were |
2595 | last editing. |
2596 | |
2597 | =item unmatched [] in regexp |
2598 | |
2599 | (F) The brackets around a character class must match. If you wish to |
2600 | include a closing bracket in a character class, backslash it or put it first. |
2601 | See L<perlre>. |
2602 | |
2603 | =item Unquoted string "%s" may clash with future reserved word |
2604 | |
54310121 |
2605 | (W) You used a bareword that might someday be claimed as a reserved word. |
a0d0e21e |
2606 | It's best to put such a word in quotes, or capitalize it somehow, or insert |
2607 | an underbar into it. You might also declare it as a subroutine. |
2608 | |
54310121 |
2609 | =item Unrecognized character %s |
a0d0e21e |
2610 | |
54310121 |
2611 | (F) The Perl parser has no idea what to do with the specified character |
2612 | in your Perl script (or eval). Perhaps you tried to run a compressed |
2613 | script, a binary program, or a directory as a Perl program. |
a0d0e21e |
2614 | |
2615 | =item Unrecognized signal name "%s" |
2616 | |
2617 | (F) You specified a signal name to the kill() function that was not recognized. |
2618 | Say C<kill -l> in your shell to see the valid signal names on your system. |
2619 | |
90248788 |
2620 | =item Unrecognized switch: -%s (-h will show valid options) |
a0d0e21e |
2621 | |
2622 | (F) You specified an illegal option to Perl. Don't do that. |
2623 | (If you think you didn't do that, check the #! line to see if it's |
2624 | supplying the bad switch on your behalf.) |
2625 | |
2626 | =item Unsuccessful %s on filename containing newline |
2627 | |
2628 | (W) A file operation was attempted on a filename, and that operation |
2629 | failed, PROBABLY because the filename contained a newline, PROBABLY |
54310121 |
2630 | because you forgot to chop() or chomp() it off. See L<perlfunc/chomp>. |
a0d0e21e |
2631 | |
2632 | =item Unsupported directory function "%s" called |
2633 | |
2634 | (F) Your machine doesn't support opendir() and readdir(). |
2635 | |
54310121 |
2636 | =item Unsupported function fork |
2637 | |
2638 | (F) Your version of executable does not support forking. |
2639 | |
2640 | Note that under some systems, like OS/2, there may be different flavors of |
2641 | Perl executables, some of which may support fork, some not. Try changing |
2642 | the name you call Perl by to C<perl_>, C<perl__>, and so on. |
2643 | |
a0d0e21e |
2644 | =item Unsupported function %s |
2645 | |
7b8d334a |
2646 | (F) This machine doesn't implement the indicated function, apparently. |
a0d0e21e |
2647 | At least, Configure doesn't think so. |
2648 | |
2649 | =item Unsupported socket function "%s" called |
2650 | |
2651 | (F) Your machine doesn't support the Berkeley socket mechanism, or at |
2652 | least that's what Configure thought. |
2653 | |
8b1a09fc |
2654 | =item Unterminated E<lt>E<gt> operator |
a0d0e21e |
2655 | |
2656 | (F) The lexer saw a left angle bracket in a place where it was expecting |
2657 | a term, so it's looking for the corresponding right angle bracket, and not |
2658 | finding it. Chances are you left some needed parentheses out earlier in |
2659 | the line, and you really meant a "less than". |
2660 | |
5cd24f17 |
2661 | =item Use of "$$<digit>" to mean "${$}<digit>" is deprecated |
2662 | |
2663 | (D) Perl versions before 5.004 misinterpreted any type marker followed |
2664 | by "$" and a digit. For example, "$$0" was incorrectly taken to mean |
2665 | "${$}0" instead of "${$0}". This bug is (mostly) fixed in Perl 5.004. |
2666 | |
2667 | However, the developers of Perl 5.004 could not fix this bug completely, |
2668 | because at least two widely-used modules depend on the old meaning of |
2669 | "$$0" in a string. So Perl 5.004 still interprets "$$<digit>" in the |
2670 | old (broken) way inside strings; but it generates this message as a |
2671 | warning. And in Perl 5.005, this special treatment will cease. |
2672 | |
a0d0e21e |
2673 | =item Use of $# is deprecated |
2674 | |
8b1a09fc |
2675 | (D) This was an ill-advised attempt to emulate a poorly defined B<awk> feature. |
a0d0e21e |
2676 | Use an explicit printf() or sprintf() instead. |
2677 | |
2678 | =item Use of $* is deprecated |
2679 | |
4a6725af |
2680 | (D) This variable magically turned on multi-line pattern matching, both for |
a0d0e21e |
2681 | you and for any luckless subroutine that you happen to call. You should |
2682 | use the new C<//m> and C<//s> modifiers now to do that without the dangerous |
2683 | action-at-a-distance effects of C<$*>. |
2684 | |
748a9306 |
2685 | =item Use of %s in printf format not supported |
2686 | |
5f05dabc |
2687 | (F) You attempted to use a feature of printf that is accessible from |
2688 | only C. This usually means there's a better way to do it in Perl. |
748a9306 |
2689 | |
8b1a09fc |
2690 | =item Use of bare E<lt>E<lt> to mean E<lt>E<lt>"" is deprecated |
4633a7c4 |
2691 | |
2692 | (D) You are now encouraged to use the explicitly quoted form if you |
3fe9a6f1 |
2693 | wish to use an empty line as the terminator of the here-document. |
4633a7c4 |
2694 | |
a0d0e21e |
2695 | =item Use of implicit split to @_ is deprecated |
2696 | |
2697 | (D) It makes a lot of work for the compiler when you clobber a |
2698 | subroutine's argument list, so it's better if you assign the results of |
2699 | a split() explicitly to an array (or list). |
2700 | |
dc848c6f |
2701 | =item Use of inherited AUTOLOAD for non-method %s() is deprecated |
2702 | |
5cd24f17 |
2703 | (D) As an (ahem) accidental feature, C<AUTOLOAD> subroutines are looked |
2704 | up as methods (using the C<@ISA> hierarchy) even when the subroutines to |
2705 | be autoloaded were called as plain functions (e.g. C<Foo::bar()>), not |
7b8d334a |
2706 | as methods (e.g. C<Foo-E<gt>bar()> or C<$obj-E<gt>bar()>). |
dc848c6f |
2707 | |
2708 | This bug will be rectified in Perl 5.005, which will use method lookup |
2709 | only for methods' C<AUTOLOAD>s. However, there is a significant base |
2710 | of existing code that may be using the old behavior. So, as an |
2711 | interim step, Perl 5.004 issues an optional warning when non-methods |
2712 | use inherited C<AUTOLOAD>s. |
2713 | |
2714 | The simple rule is: Inheritance will not work when autoloading |
2715 | non-methods. The simple fix for old code is: In any module that used to |
2716 | depend on inheriting C<AUTOLOAD> for non-methods from a base class named |
2717 | C<BaseClass>, execute C<*AUTOLOAD = \&BaseClass::AUTOLOAD> during startup. |
2718 | |
fb73857a |
2719 | In code that currently says C<use AutoLoader; @ISA = qw(AutoLoader);> you |
2720 | should remove AutoLoader from @ISA and change C<use AutoLoader;> to |
7b8d334a |
2721 | C<use AutoLoader 'AUTOLOAD';>. |
fb73857a |
2722 | |
dc848c6f |
2723 | =item Use of %s is deprecated |
2724 | |
2725 | (D) The construct indicated is no longer recommended for use, generally |
2726 | because there's a better way to do it, and also because the old way has |
2727 | bad side effects. |
2728 | |
a0d0e21e |
2729 | =item Use of uninitialized value |
2730 | |
2731 | (W) An undefined value was used as if it were already defined. It was |
2732 | interpreted as a "" or a 0, but maybe it was a mistake. To suppress this |
2733 | warning assign an initial value to your variables. |
2734 | |
2735 | =item Useless use of %s in void context |
2736 | |
2737 | (W) You did something without a side effect in a context that does nothing |
2738 | with the return value, such as a statement that doesn't return a value |
2739 | from a block, or the left side of a scalar comma operator. Very often |
2740 | this points not to stupidity on your part, but a failure of Perl to parse |
2741 | your program the way you thought it would. For example, you'd get this |
2742 | if you mixed up your C precedence with Python precedence and said |
2743 | |
2744 | $one, $two = 1, 2; |
2745 | |
2746 | when you meant to say |
2747 | |
2748 | ($one, $two) = (1, 2); |
2749 | |
748a9306 |
2750 | Another common error is to use ordinary parentheses to construct a list |
2751 | reference when you should be using square or curly brackets, for |
2752 | example, if you say |
2753 | |
2754 | $array = (1,2); |
2755 | |
2756 | when you should have said |
2757 | |
2758 | $array = [1,2]; |
2759 | |
2760 | The square brackets explicitly turn a list value into a scalar value, |
2761 | while parentheses do not. So when a parenthesized list is evaluated in |
2762 | a scalar context, the comma is treated like C's comma operator, which |
2763 | throws away the left argument, which is not what you want. See |
2764 | L<perlref> for more on this. |
2765 | |
55497cff |
2766 | =item untie attempted while %d inner references still exist |
2767 | |
2768 | (W) A copy of the object returned from C<tie> (or C<tied>) was still |
2769 | valid when C<untie> was called. |
2770 | |
68dc0745 |
2771 | =item Value of %s can be "0"; test with defined() |
a6006777 |
2772 | |
68dc0745 |
2773 | (W) In a conditional expression, you used <HANDLE>, <*> (glob), C<each()>, |
2774 | or C<readdir()> as a boolean value. Each of these constructs can return a |
2775 | value of "0"; that would make the conditional expression false, which is |
2776 | probably not what you intended. When using these constructs in conditional |
2777 | expressions, test their values with the C<defined> operator. |
a6006777 |
2778 | |
9607fc9c |
2779 | =item Variable "%s" is not imported%s |
4633a7c4 |
2780 | |
2781 | (F) While "use strict" in effect, you referred to a global variable |
2782 | that you apparently thought was imported from another module, because |
2783 | something else of the same name (usually a subroutine) is exported |
2784 | by that module. It usually means you put the wrong funny character |
2785 | on the front of your variable. |
2786 | |
44a8e56a |
2787 | =item Variable "%s" may be unavailable |
2788 | |
2789 | (W) An inner (nested) I<anonymous> subroutine is inside a I<named> |
2790 | subroutine, and outside that is another subroutine; and the anonymous |
2791 | (innermost) subroutine is referencing a lexical variable defined in |
2792 | the outermost subroutine. For example: |
2793 | |
2794 | sub outermost { my $a; sub middle { sub { $a } } } |
2795 | |
2796 | If the anonymous subroutine is called or referenced (directly or |
2797 | indirectly) from the outermost subroutine, it will share the variable |
2798 | as you would expect. But if the anonymous subroutine is called or |
2799 | referenced when the outermost subroutine is not active, it will see |
2800 | the value of the shared variable as it was before and during the |
2801 | *first* call to the outermost subroutine, which is probably not what |
2802 | you want. |
2803 | |
2804 | In these circumstances, it is usually best to make the middle |
2805 | subroutine anonymous, using the C<sub {}> syntax. Perl has specific |
2806 | support for shared variables in nested anonymous subroutines; a named |
2807 | subroutine in between interferes with this feature. |
2808 | |
2809 | =item Variable "%s" will not stay shared |
2810 | |
2811 | (W) An inner (nested) I<named> subroutine is referencing a lexical |
2812 | variable defined in an outer subroutine. |
2813 | |
2814 | When the inner subroutine is called, it will probably see the value of |
2815 | the outer subroutine's variable as it was before and during the |
2816 | *first* call to the outer subroutine; in this case, after the first |
2817 | call to the outer subroutine is complete, the inner and outer |
2818 | subroutines will no longer share a common value for the variable. In |
2819 | other words, the variable will no longer be shared. |
2820 | |
2821 | Furthermore, if the outer subroutine is anonymous and references a |
2822 | lexical variable outside itself, then the outer and inner subroutines |
2823 | will I<never> share the given variable. |
2824 | |
2825 | This problem can usually be solved by making the inner subroutine |
2826 | anonymous, using the C<sub {}> syntax. When inner anonymous subs that |
2827 | reference variables in outer subroutines are called or referenced, |
54310121 |
2828 | they are automatically rebound to the current values of such |
44a8e56a |
2829 | variables. |
2830 | |
f86702cc |
2831 | =item Variable syntax |
cb1a09d0 |
2832 | |
2833 | (A) You've accidentally run your script through B<csh> instead |
3a52c276 |
2834 | of Perl. Check the #! line, or manually feed your script into |
2835 | Perl yourself. |
cb1a09d0 |
2836 | |
3e6e419a |
2837 | =item perl: warning: Setting locale failed. |
2838 | |
2839 | (S) The whole warning message will look something like: |
2840 | |
2841 | perl: warning: Setting locale failed. |
2842 | perl: warning: Please check that your locale settings: |
2843 | LC_ALL = "En_US", |
2844 | LANG = (unset) |
2845 | are supported and installed on your system. |
2846 | perl: warning: Falling back to the standard locale ("C"). |
2847 | |
2848 | Exactly what were the failed locale settings varies. In the above the |
2849 | settings were that the LC_ALL was "En_US" and the LANG had no value. |
2850 | This error means that Perl detected that you and/or your system |
2851 | administrator have set up the so-called variable system but Perl could |
2852 | not use those settings. This was not dead serious, fortunately: there |
2853 | is a "default locale" called "C" that Perl can and will use, the |
2854 | script will be run. Before you really fix the problem, however, you |
2855 | will get the same error message each time you run Perl. How to really |
2856 | fix the problem can be found in L<perllocale> section B<LOCALE PROBLEMS>. |
2857 | |
7e1af8bc |
2858 | =item Warning: something's wrong |
5f05dabc |
2859 | |
2860 | (W) You passed warn() an empty string (the equivalent of C<warn "">) or |
2861 | you called it with no args and C<$_> was empty. |
2862 | |
f86702cc |
2863 | =item Warning: unable to close filehandle %s properly |
a0d0e21e |
2864 | |
8b1a09fc |
2865 | (S) The implicit close() done by an open() got an error indication on the |
5f05dabc |
2866 | close(). This usually indicates your file system ran out of disk space. |
a0d0e21e |
2867 | |
5f05dabc |
2868 | =item Warning: Use of "%s" without parentheses is ambiguous |
a0d0e21e |
2869 | |
2870 | (S) You wrote a unary operator followed by something that looks like a |
2871 | binary operator that could also have been interpreted as a term or |
2872 | unary operator. For instance, if you know that the rand function |
2873 | has a default argument of 1.0, and you write |
2874 | |
2875 | rand + 5; |
2876 | |
2877 | you may THINK you wrote the same thing as |
2878 | |
2879 | rand() + 5; |
2880 | |
2881 | but in actual fact, you got |
2882 | |
2883 | rand(+5); |
2884 | |
5f05dabc |
2885 | So put in parentheses to say what you really mean. |
a0d0e21e |
2886 | |
2887 | =item Write on closed filehandle |
2888 | |
2889 | (W) The filehandle you're writing to got itself closed sometime before now. |
2890 | Check your logic flow. |
2891 | |
2892 | =item X outside of string |
2893 | |
2894 | (F) You had a pack template that specified a relative position before |
2895 | the beginning of the string being unpacked. See L<perlfunc/pack>. |
2896 | |
2897 | =item x outside of string |
2898 | |
2899 | (F) You had a pack template that specified a relative position after |
2900 | the end of the string being unpacked. See L<perlfunc/pack>. |
2901 | |
2902 | =item Xsub "%s" called in sort |
2903 | |
2904 | (F) The use of an external subroutine as a sort comparison is not yet supported. |
2905 | |
2906 | =item Xsub called in sort |
2907 | |
2908 | (F) The use of an external subroutine as a sort comparison is not yet supported. |
2909 | |
2910 | =item You can't use C<-l> on a filehandle |
2911 | |
2912 | (F) A filehandle represents an opened file, and when you opened the file it |
2913 | already went past any symlink you are presumably trying to look for. |
2914 | Use a filename instead. |
2915 | |
2916 | =item YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET! |
2917 | |
5f05dabc |
2918 | (F) And you probably never will, because you probably don't have the |
a0d0e21e |
2919 | sources to your kernel, and your vendor probably doesn't give a rip |
2920 | about what you want. Your best bet is to use the wrapsuid script in |
2921 | the eg directory to put a setuid C wrapper around your script. |
2922 | |
2923 | =item You need to quote "%s" |
2924 | |
2925 | (W) You assigned a bareword as a signal handler name. Unfortunately, you |
2926 | already have a subroutine of that name declared, which means that Perl 5 |
2927 | will try to call the subroutine when the assignment is executed, which is |
2928 | probably not what you want. (If it IS what you want, put an & in front.) |
2929 | |
2930 | =item [gs]etsockopt() on closed fd |
2931 | |
2932 | (W) You tried to get or set a socket option on a closed socket. |
2933 | Did you forget to check the return value of your socket() call? |
2934 | See L<perlfunc/getsockopt>. |
2935 | |
2936 | =item \1 better written as $1 |
2937 | |
2938 | (W) Outside of patterns, backreferences live on as variables. The use |
5f05dabc |
2939 | of backslashes is grandfathered on the right-hand side of a |
a0d0e21e |
2940 | substitution, but stylistically it's better to use the variable form |
2941 | because other Perl programmers will expect it, and it works better |
2942 | if there are more than 9 backreferences. |
2943 | |
8b1a09fc |
2944 | =item '|' and 'E<lt>' may not both be specified on command line |
748a9306 |
2945 | |
2946 | (F) An error peculiar to VMS. Perl does its own command line redirection, and |
2947 | found that STDIN was a pipe, and that you also tried to redirect STDIN using |
8b1a09fc |
2948 | 'E<lt>'. Only one STDIN stream to a customer, please. |
748a9306 |
2949 | |
8b1a09fc |
2950 | =item '|' and 'E<gt>' may not both be specified on command line |
748a9306 |
2951 | |
2952 | (F) An error peculiar to VMS. Perl does its own command line redirection, and |
2953 | thinks you tried to redirect stdout both to a file and into a pipe to another |
2954 | command. You need to choose one or the other, though nothing's stopping you |
2955 | from piping into a program or Perl script which 'splits' output into two |
2956 | streams, such as |
2957 | |
2958 | open(OUT,">$ARGV[0]") or die "Can't write to $ARGV[0]: $!"; |
2959 | while (<STDIN>) { |
2960 | print; |
2961 | print OUT; |
2962 | } |
2963 | close OUT; |
2964 | |
774d564b |
2965 | =item Got an error from DosAllocMem |
33c8a3fe |
2966 | |
774d564b |
2967 | (P) An error peculiar to OS/2. Most probably you're using an obsolete |
2968 | version of Perl, and this should not happen anyway. |
33c8a3fe |
2969 | |
2970 | =item Malformed PERLLIB_PREFIX |
2971 | |
dc848c6f |
2972 | (F) An error peculiar to OS/2. PERLLIB_PREFIX should be of the form |
33c8a3fe |
2973 | |
2974 | prefix1;prefix2 |
2975 | |
2976 | or |
2977 | |
2978 | prefix1 prefix2 |
2979 | |
dc848c6f |
2980 | with nonempty prefix1 and prefix2. If C<prefix1> is indeed a prefix |
2981 | of a builtin library search path, prefix2 is substituted. The error |
2982 | may appear if components are not found, or are too long. See |
2983 | "PERLLIB_PREFIX" in F<README.os2>. |
33c8a3fe |
2984 | |
2985 | =item PERL_SH_DIR too long |
2986 | |
54310121 |
2987 | (F) An error peculiar to OS/2. PERL_SH_DIR is the directory to find the |
dc848c6f |
2988 | C<sh>-shell in. See "PERL_SH_DIR" in F<README.os2>. |
33c8a3fe |
2989 | |
2990 | =item Process terminated by SIG%s |
2991 | |
2992 | (W) This is a standard message issued by OS/2 applications, while *nix |
dc848c6f |
2993 | applications die in silence. It is considered a feature of the OS/2 |
2994 | port. One can easily disable this by appropriate sighandlers, see |
2995 | L<perlipc/"Signals">. See also "Process terminated by SIGTERM/SIGINT" |
2996 | in F<README.os2>. |
33c8a3fe |
2997 | |
a0d0e21e |
2998 | =back |
2999 | |