| 1 | =head1 NAME |
| 2 | |
| 3 | perldiag - various Perl diagnostics |
| 4 | |
| 5 | =head1 DESCRIPTION |
| 6 | |
| 7 | These messages are classified as follows (listed in increasing order of |
| 8 | desperation): |
| 9 | |
| 10 | (W) A warning (optional). |
| 11 | (D) A deprecation (optional). |
| 12 | (S) A severe warning (mandatory). |
| 13 | (F) A fatal error (trappable). |
| 14 | (P) An internal error you should never see (trappable). |
| 15 | (X) A very fatal error (nontrappable). |
| 16 | (A) An alien error message (not generated by Perl). |
| 17 | |
| 18 | Optional warnings are enabled by using the B<-w> switch. Warnings may |
| 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>. |
| 21 | |
| 22 | Trappable errors may be trapped using the eval operator. See |
| 23 | L<perlfunc/eval>. In almost all cases, warnings may be selectively |
| 24 | disabled or promoted to fatal errors using the C<warnings> pragma. |
| 25 | See L<warnings>. |
| 26 | |
| 27 | Some of these messages are generic. Spots that vary are denoted with a %s, |
| 28 | just as in a printf format. Note that some messages start with a %s! |
| 29 | Since the messages are listed in alphabetical order, the symbols |
| 30 | C<"%(-?@> sort before the letters, while C<[> and C<\> sort after. |
| 31 | |
| 32 | =over 4 |
| 33 | |
| 34 | =item "my sub" not yet implemented |
| 35 | |
| 36 | (F) Lexically scoped subroutines are not yet implemented. Don't try that |
| 37 | yet. |
| 38 | |
| 39 | =item "my" variable %s can't be in a package |
| 40 | |
| 41 | (F) Lexically scoped variables aren't in a package, so it doesn't make sense |
| 42 | to try to declare one with a package qualifier on the front. Use local() |
| 43 | if you want to localize a package variable. |
| 44 | |
| 45 | =item "my" variable %s masks earlier declaration in same %s |
| 46 | |
| 47 | (W) A lexical variable has been redeclared in the current scope or statement, |
| 48 | effectively eliminating all access to the previous instance. This is almost |
| 49 | always a typographical error. Note that the earlier variable will still exist |
| 50 | until the end of the scope or until all closure referents to it are |
| 51 | destroyed. |
| 52 | |
| 53 | =item "no" not allowed in expression |
| 54 | |
| 55 | (F) The "no" keyword is recognized and executed at compile time, and returns |
| 56 | no useful value. See L<perlmod>. |
| 57 | |
| 58 | =item "use" not allowed in expression |
| 59 | |
| 60 | (F) The "use" keyword is recognized and executed at compile time, and returns |
| 61 | no useful value. See L<perlmod>. |
| 62 | |
| 63 | =item '!' allowed only after types %s |
| 64 | |
| 65 | (F) The '!' is allowed in pack() and unpack() only after certain types. |
| 66 | See L<perlfunc/pack>. |
| 67 | |
| 68 | =item / cannot take a count |
| 69 | |
| 70 | (F) You had an unpack template indicating a counted-length string, |
| 71 | but you have also specified an explicit size for the string. |
| 72 | See L<perlfunc/pack>. |
| 73 | |
| 74 | =item / must be followed by a, A or Z |
| 75 | |
| 76 | (F) You had an unpack template indicating a counted-length string, |
| 77 | which must be followed by one of the letters a, A or Z |
| 78 | to indicate what sort of string is to be unpacked. |
| 79 | See L<perlfunc/pack>. |
| 80 | |
| 81 | =item / must be followed by a*, A* or Z* |
| 82 | |
| 83 | (F) You had a pack template indicating a counted-length string, |
| 84 | Currently the only things that can have their length counted are a*, A* or Z*. |
| 85 | See L<perlfunc/pack>. |
| 86 | |
| 87 | =item / must follow a numeric type |
| 88 | |
| 89 | (F) You had an unpack template that contained a '#', |
| 90 | but this did not follow some numeric unpack specification. |
| 91 | See L<perlfunc/pack>. |
| 92 | |
| 93 | =item % may only be used in unpack |
| 94 | |
| 95 | (F) You can't pack a string by supplying a checksum, because the |
| 96 | checksumming process loses information, and you can't go the other |
| 97 | way. See L<perlfunc/unpack>. |
| 98 | |
| 99 | =item Repeat count in pack overflows |
| 100 | |
| 101 | (F) You can't specify a repeat count so large that it overflows |
| 102 | your signed integers. See L<perlfunc/pack>. |
| 103 | |
| 104 | =item Repeat count in unpack overflows |
| 105 | |
| 106 | (F) You can't specify a repeat count so large that it overflows |
| 107 | your signed integers. See L<perlfunc/unpack>. |
| 108 | |
| 109 | =item /%s/: Unrecognized escape \\%c passed through |
| 110 | |
| 111 | (W) You used a backslash-character combination which is not recognized |
| 112 | by Perl. This combination appears in an interpolated variable or a |
| 113 | C<'>-delimited regular expression. The character was understood literally. |
| 114 | |
| 115 | =item /%s/: Unrecognized escape \\%c in character class passed through |
| 116 | |
| 117 | (W) You used a backslash-character combination which is not recognized |
| 118 | by Perl inside character classes. The character was understood literally. |
| 119 | |
| 120 | =item /%s/ should probably be written as "%s" |
| 121 | |
| 122 | (W) You have used a pattern where Perl expected to find a string, |
| 123 | as in the first argument to C<join>. Perl will treat the true |
| 124 | or false result of matching the pattern against $_ as the string, |
| 125 | which is probably not what you had in mind. |
| 126 | |
| 127 | =item %s (...) interpreted as function |
| 128 | |
| 129 | (W) You've run afoul of the rule that says that any list operator followed |
| 130 | by parentheses turns into a function, with all the list operators arguments |
| 131 | found inside the parentheses. See L<perlop/Terms and List Operators (Leftward)>. |
| 132 | |
| 133 | =item %s() called too early to check prototype |
| 134 | |
| 135 | (W) You've called a function that has a prototype before the parser saw a |
| 136 | definition or declaration for it, and Perl could not check that the call |
| 137 | conforms to the prototype. You need to either add an early prototype |
| 138 | declaration for the subroutine in question, or move the subroutine |
| 139 | definition ahead of the call to get proper prototype checking. Alternatively, |
| 140 | if you are certain that you're calling the function correctly, you may put |
| 141 | an ampersand before the name to avoid the warning. See L<perlsub>. |
| 142 | |
| 143 | =item %s argument is not a HASH element |
| 144 | |
| 145 | (F) The argument to exists() must be a hash element, such as |
| 146 | |
| 147 | $foo{$bar} |
| 148 | $ref->[12]->{"susie"} |
| 149 | |
| 150 | =item %s argument is not a HASH element or slice |
| 151 | |
| 152 | (F) The argument to delete() must be either a hash element, such as |
| 153 | |
| 154 | $foo{$bar} |
| 155 | $ref->[12]->{"susie"} |
| 156 | |
| 157 | or a hash slice, such as |
| 158 | |
| 159 | @foo{$bar, $baz, $xyzzy} |
| 160 | @{$ref->[12]}{"susie", "queue"} |
| 161 | |
| 162 | =item %s did not return a true value |
| 163 | |
| 164 | (F) A required (or used) file must return a true value to indicate that |
| 165 | it compiled correctly and ran its initialization code correctly. It's |
| 166 | traditional to end such a file with a "1;", though any true value would |
| 167 | do. See L<perlfunc/require>. |
| 168 | |
| 169 | =item %s found where operator expected |
| 170 | |
| 171 | (S) The Perl lexer knows whether to expect a term or an operator. If it |
| 172 | sees what it knows to be a term when it was expecting to see an operator, |
| 173 | it gives you this warning. Usually it indicates that an operator or |
| 174 | delimiter was omitted, such as a semicolon. |
| 175 | |
| 176 | =item %s had compilation errors |
| 177 | |
| 178 | (F) The final summary message when a C<perl -c> fails. |
| 179 | |
| 180 | =item %s has too many errors |
| 181 | |
| 182 | (F) The parser has given up trying to parse the program after 10 errors. |
| 183 | Further error messages would likely be uninformative. |
| 184 | |
| 185 | =item %s matches null string many times |
| 186 | |
| 187 | (W) The pattern you've specified would be an infinite loop if the |
| 188 | regular expression engine didn't specifically check for that. See L<perlre>. |
| 189 | |
| 190 | =item %s never introduced |
| 191 | |
| 192 | (S) The symbol in question was declared but somehow went out of scope |
| 193 | before it could possibly have been used. |
| 194 | |
| 195 | =item %s package attribute may clash with future reserved word: %s |
| 196 | |
| 197 | (W) A lowercase attribute name was used that had a package-specific handler. |
| 198 | That name might have a meaning to Perl itself some day, even though it |
| 199 | doesn't yet. Perhaps you should use a mixed-case attribute name, instead. |
| 200 | See L<attributes>. |
| 201 | |
| 202 | =item %s syntax OK |
| 203 | |
| 204 | (F) The final summary message when a C<perl -c> succeeds. |
| 205 | |
| 206 | =item %s: Command not found |
| 207 | |
| 208 | (A) You've accidentally run your script through B<csh> instead |
| 209 | of Perl. Check the #! line, or manually feed your script into |
| 210 | Perl yourself. |
| 211 | |
| 212 | =item %s: Expression syntax |
| 213 | |
| 214 | (A) You've accidentally run your script through B<csh> instead |
| 215 | of Perl. Check the #! line, or manually feed your script into |
| 216 | Perl yourself. |
| 217 | |
| 218 | =item %s: Undefined variable |
| 219 | |
| 220 | (A) You've accidentally run your script through B<csh> instead |
| 221 | of Perl. Check the #! line, or manually feed your script into |
| 222 | Perl yourself. |
| 223 | |
| 224 | =item %s: not found |
| 225 | |
| 226 | (A) You've accidentally run your script through the Bourne shell |
| 227 | instead of Perl. Check the #! line, or manually feed your script |
| 228 | into Perl yourself. |
| 229 | |
| 230 | =item (in cleanup) %s |
| 231 | |
| 232 | (W) This prefix usually indicates that a DESTROY() method raised |
| 233 | the indicated exception. Since destructors are usually called by |
| 234 | the system at arbitrary points during execution, and often a vast |
| 235 | number of times, the warning is issued only once for any number |
| 236 | of failures that would otherwise result in the same message being |
| 237 | repeated. |
| 238 | |
| 239 | Failure of user callbacks dispatched using the C<G_KEEPERR> flag |
| 240 | could also result in this warning. See L<perlcall/G_KEEPERR>. |
| 241 | |
| 242 | =item (Missing semicolon on previous line?) |
| 243 | |
| 244 | (S) This is an educated guess made in conjunction with the message "%s |
| 245 | found where operator expected". Don't automatically put a semicolon on |
| 246 | the previous line just because you saw this message. |
| 247 | |
| 248 | =item B<-P> not allowed for setuid/setgid script |
| 249 | |
| 250 | (F) The script would have to be opened by the C preprocessor by name, |
| 251 | which provides a race condition that breaks security. |
| 252 | |
| 253 | =item C<-T> and C<-B> not implemented on filehandles |
| 254 | |
| 255 | (F) Perl can't peek at the stdio buffer of filehandles when it doesn't |
| 256 | know about your kind of stdio. You'll have to use a filename instead. |
| 257 | |
| 258 | =item C<-p> destination: %s |
| 259 | |
| 260 | (F) An error occurred during the implicit output invoked by the C<-p> |
| 261 | command-line switch. (This output goes to STDOUT unless you've |
| 262 | redirected it with select().) |
| 263 | |
| 264 | =item 500 Server error |
| 265 | |
| 266 | See Server error. |
| 267 | |
| 268 | =item ?+* follows nothing in regexp |
| 269 | |
| 270 | (F) You started a regular expression with a quantifier. Backslash it |
| 271 | if you meant it literally. See L<perlre>. |
| 272 | |
| 273 | =item @ outside of string |
| 274 | |
| 275 | (F) You had a pack template that specified an absolute position outside |
| 276 | the string being unpacked. See L<perlfunc/pack>. |
| 277 | |
| 278 | =item <> should be quotes |
| 279 | |
| 280 | (F) You wrote C<require E<lt>fileE<gt>> when you should have written |
| 281 | C<require 'file'>. |
| 282 | |
| 283 | =item accept() on closed socket |
| 284 | |
| 285 | (W) You tried to do an accept on a closed socket. Did you forget to check |
| 286 | the return value of your socket() call? See L<perlfunc/accept>. |
| 287 | |
| 288 | =item Allocation too large: %lx |
| 289 | |
| 290 | (X) You can't allocate more than 64K on an MS-DOS machine. |
| 291 | |
| 292 | =item Applying %s to %s will act on scalar(%s) |
| 293 | |
| 294 | (W) The pattern match (//), substitution (s///), and transliteration (tr///) |
| 295 | operators work on scalar values. If you apply one of them to an array |
| 296 | or a hash, it will convert the array or hash to a scalar value -- the |
| 297 | length of an array, or the population info of a hash -- and then work on |
| 298 | that scalar value. This is probably not what you meant to do. See |
| 299 | L<perlfunc/grep> and L<perlfunc/map> for alternatives. |
| 300 | |
| 301 | =item Arg too short for msgsnd |
| 302 | |
| 303 | (F) msgsnd() requires a string at least as long as sizeof(long). |
| 304 | |
| 305 | =item Ambiguous use of %s resolved as %s |
| 306 | |
| 307 | (W)(S) You said something that may not be interpreted the way |
| 308 | you thought. Normally it's pretty easy to disambiguate it by supplying |
| 309 | a missing quote, operator, parenthesis pair or declaration. |
| 310 | |
| 311 | =item Ambiguous call resolved as CORE::%s(), qualify as such or use & |
| 312 | |
| 313 | (W) A subroutine you have declared has the same name as a Perl keyword, |
| 314 | and you have used the name without qualification for calling one or the |
| 315 | other. Perl decided to call the builtin because the subroutine is |
| 316 | not imported. |
| 317 | |
| 318 | To force interpretation as a subroutine call, either put an ampersand |
| 319 | before the subroutine name, or qualify the name with its package. |
| 320 | Alternatively, you can import the subroutine (or pretend that it's |
| 321 | imported with the C<use subs> pragma). |
| 322 | |
| 323 | To silently interpret it as the Perl operator, use the C<CORE::> prefix |
| 324 | on the operator (e.g. C<CORE::log($x)>) or by declaring the subroutine |
| 325 | to be an object method (see L<perlsub/"Subroutine Attributes"> |
| 326 | or L<attributes>). |
| 327 | |
| 328 | =item Args must match #! line |
| 329 | |
| 330 | (F) The setuid emulator requires that the arguments Perl was invoked |
| 331 | with match the arguments specified on the #! line. Since some systems |
| 332 | impose a one-argument limit on the #! line, try combining switches; |
| 333 | for example, turn C<-w -U> into C<-wU>. |
| 334 | |
| 335 | =item Argument "%s" isn't numeric%s |
| 336 | |
| 337 | (W) The indicated string was fed as an argument to an operator that |
| 338 | expected a numeric value instead. If you're fortunate the message |
| 339 | will identify which operator was so unfortunate. |
| 340 | |
| 341 | =item Array @%s missing the @ in argument %d of %s() |
| 342 | |
| 343 | (D) Really old Perl let you omit the @ on array names in some spots. This |
| 344 | is now heavily deprecated. |
| 345 | |
| 346 | =item assertion botched: %s |
| 347 | |
| 348 | (P) The malloc package that comes with Perl had an internal failure. |
| 349 | |
| 350 | =item Assertion failed: file "%s" |
| 351 | |
| 352 | (P) A general assertion failed. The file in question must be examined. |
| 353 | |
| 354 | =item Assignment to both a list and a scalar |
| 355 | |
| 356 | (F) If you assign to a conditional operator, the 2nd and 3rd arguments |
| 357 | must either both be scalars or both be lists. Otherwise Perl won't |
| 358 | know which context to supply to the right side. |
| 359 | |
| 360 | =item Attempt to free non-arena SV: 0x%lx |
| 361 | |
| 362 | (P) All SV objects are supposed to be allocated from arenas that will |
| 363 | be garbage collected on exit. An SV was discovered to be outside any |
| 364 | of those arenas. |
| 365 | |
| 366 | =item Attempt to free nonexistent shared string |
| 367 | |
| 368 | (P) Perl maintains a reference counted internal table of strings to |
| 369 | optimize the storage and access of hash keys and other strings. This |
| 370 | indicates someone tried to decrement the reference count of a string |
| 371 | that can no longer be found in the table. |
| 372 | |
| 373 | =item Attempt to free temp prematurely |
| 374 | |
| 375 | (W) Mortalized values are supposed to be freed by the free_tmps() |
| 376 | routine. This indicates that something else is freeing the SV before |
| 377 | the free_tmps() routine gets a chance, which means that the free_tmps() |
| 378 | routine will be freeing an unreferenced scalar when it does try to free |
| 379 | it. |
| 380 | |
| 381 | =item Attempt to free unreferenced glob pointers |
| 382 | |
| 383 | (P) The reference counts got screwed up on symbol aliases. |
| 384 | |
| 385 | =item Attempt to free unreferenced scalar |
| 386 | |
| 387 | (W) Perl went to decrement the reference count of a scalar to see if it |
| 388 | would go to 0, and discovered that it had already gone to 0 earlier, |
| 389 | and should have been freed, and in fact, probably was freed. This |
| 390 | could indicate that SvREFCNT_dec() was called too many times, or that |
| 391 | SvREFCNT_inc() was called too few times, or that the SV was mortalized |
| 392 | when it shouldn't have been, or that memory has been corrupted. |
| 393 | |
| 394 | =item Attempt to join self |
| 395 | |
| 396 | (F) You tried to join a thread from within itself, which is an |
| 397 | impossible task. You may be joining the wrong thread, or you may |
| 398 | need to move the join() to some other thread. |
| 399 | |
| 400 | =item Attempt to pack pointer to temporary value |
| 401 | |
| 402 | (W) You tried to pass a temporary value (like the result of a |
| 403 | function, or a computed expression) to the "p" pack() template. This |
| 404 | means the result contains a pointer to a location that could become |
| 405 | invalid anytime, even before the end of the current statement. Use |
| 406 | literals or global values as arguments to the "p" pack() template to |
| 407 | avoid this warning. |
| 408 | |
| 409 | =item Attempt to use reference as lvalue in substr |
| 410 | |
| 411 | (W) You supplied a reference as the first argument to substr() used |
| 412 | as an lvalue, which is pretty strange. Perhaps you forgot to |
| 413 | dereference it first. See L<perlfunc/substr>. |
| 414 | |
| 415 | =item Bad arg length for %s, is %d, should be %d |
| 416 | |
| 417 | (F) You passed a buffer of the wrong size to one of msgctl(), semctl() or |
| 418 | shmctl(). In C parlance, the correct sizes are, respectively, |
| 419 | S<sizeof(struct msqid_ds *)>, S<sizeof(struct semid_ds *)>, and |
| 420 | S<sizeof(struct shmid_ds *)>. |
| 421 | |
| 422 | =item Bad filehandle: %s |
| 423 | |
| 424 | (F) A symbol was passed to something wanting a filehandle, but the symbol |
| 425 | has no filehandle associated with it. Perhaps you didn't do an open(), or |
| 426 | did it in another package. |
| 427 | |
| 428 | =item Bad free() ignored |
| 429 | |
| 430 | (S) An internal routine called free() on something that had never been |
| 431 | malloc()ed in the first place. Mandatory, but can be disabled by |
| 432 | setting environment variable C<PERL_BADFREE> to 1. |
| 433 | |
| 434 | This message can be quite often seen with DB_File on systems with |
| 435 | "hard" dynamic linking, like C<AIX> and C<OS/2>. It is a bug of |
| 436 | C<Berkeley DB> which is left unnoticed if C<DB> uses I<forgiving> |
| 437 | system malloc(). |
| 438 | |
| 439 | =item Bad hash |
| 440 | |
| 441 | (P) One of the internal hash routines was passed a null HV pointer. |
| 442 | |
| 443 | =item Bad index while coercing array into hash |
| 444 | |
| 445 | (F) The index looked up in the hash found as the 0'th element of a |
| 446 | pseudo-hash is not legal. Index values must be at 1 or greater. |
| 447 | See L<perlref>. |
| 448 | |
| 449 | =item Bad name after %s:: |
| 450 | |
| 451 | (F) You started to name a symbol by using a package prefix, and then didn't |
| 452 | finish the symbol. In particular, you can't interpolate outside of quotes, |
| 453 | so |
| 454 | |
| 455 | $var = 'myvar'; |
| 456 | $sym = mypack::$var; |
| 457 | |
| 458 | is not the same as |
| 459 | |
| 460 | $var = 'myvar'; |
| 461 | $sym = "mypack::$var"; |
| 462 | |
| 463 | =item Bad realloc() ignored |
| 464 | |
| 465 | (S) An internal routine called realloc() on something that had never been |
| 466 | malloc()ed in the first place. Mandatory, but can be disabled by |
| 467 | setting environment variable C<PERL_BADFREE> to 1. |
| 468 | |
| 469 | =item Bad symbol for array |
| 470 | |
| 471 | (P) An internal request asked to add an array entry to something that |
| 472 | wasn't a symbol table entry. |
| 473 | |
| 474 | =item Bad symbol for filehandle |
| 475 | |
| 476 | (P) An internal request asked to add a filehandle entry to something that |
| 477 | wasn't a symbol table entry. |
| 478 | |
| 479 | =item Bad symbol for hash |
| 480 | |
| 481 | (P) An internal request asked to add a hash entry to something that |
| 482 | wasn't a symbol table entry. |
| 483 | |
| 484 | =item Badly placed ()'s |
| 485 | |
| 486 | (A) You've accidentally run your script through B<csh> instead |
| 487 | of Perl. Check the #! line, or manually feed your script into |
| 488 | Perl yourself. |
| 489 | |
| 490 | =item Bareword "%s" not allowed while "strict subs" in use |
| 491 | |
| 492 | (F) With "strict subs" in use, a bareword is only allowed as a |
| 493 | subroutine identifier, in curly brackets or to the left of the "=>" symbol. |
| 494 | Perhaps you need to predeclare a subroutine? |
| 495 | |
| 496 | =item Bareword "%s" refers to nonexistent package |
| 497 | |
| 498 | (W) You used a qualified bareword of the form C<Foo::>, but |
| 499 | the compiler saw no other uses of that namespace before that point. |
| 500 | Perhaps you need to predeclare a package? |
| 501 | |
| 502 | =item BEGIN failed--compilation aborted |
| 503 | |
| 504 | (F) An untrapped exception was raised while executing a BEGIN subroutine. |
| 505 | Compilation stops immediately and the interpreter is exited. |
| 506 | |
| 507 | =item BEGIN not safe after errors--compilation aborted |
| 508 | |
| 509 | (F) Perl found a C<BEGIN {}> subroutine (or a C<use> directive, which |
| 510 | implies a C<BEGIN {}>) after one or more compilation errors had |
| 511 | already occurred. Since the intended environment for the C<BEGIN {}> |
| 512 | could not be guaranteed (due to the errors), and since subsequent code |
| 513 | likely depends on its correct operation, Perl just gave up. |
| 514 | |
| 515 | =item Binary number > 0b11111111111111111111111111111111 non-portable |
| 516 | |
| 517 | (W) The binary number you specified is larger than 2**32-1 |
| 518 | (4294967295) and therefore non-portable between systems. See |
| 519 | L<perlport> for more on portability concerns. |
| 520 | |
| 521 | =item bind() on closed socket |
| 522 | |
| 523 | (W) You tried to do a bind on a closed socket. Did you forget to check |
| 524 | the return value of your socket() call? See L<perlfunc/bind>. |
| 525 | |
| 526 | =item Bit vector size > 32 non-portable |
| 527 | |
| 528 | (W) Using bit vector sizes larger than 32 is non-portable. |
| 529 | |
| 530 | =item Bizarre copy of %s in %s |
| 531 | |
| 532 | (P) Perl detected an attempt to copy an internal value that is not copiable. |
| 533 | |
| 534 | =item Buffer overflow in prime_env_iter: %s |
| 535 | |
| 536 | (W) A warning peculiar to VMS. While Perl was preparing to iterate over |
| 537 | %ENV, it encountered a logical name or symbol definition which was too long, |
| 538 | so it was truncated to the string shown. |
| 539 | |
| 540 | =item Callback called exit |
| 541 | |
| 542 | (F) A subroutine invoked from an external package via perl_call_sv() |
| 543 | exited by calling exit. |
| 544 | |
| 545 | =item Can't "goto" out of a pseudo block |
| 546 | |
| 547 | (F) A "goto" statement was executed to jump out of what might look |
| 548 | like a block, except that it isn't a proper block. This usually |
| 549 | occurs if you tried to jump out of a sort() block or subroutine, which |
| 550 | is a no-no. See L<perlfunc/goto>. |
| 551 | |
| 552 | =item Can't "goto" into the middle of a foreach loop |
| 553 | |
| 554 | (F) A "goto" statement was executed to jump into the middle of a |
| 555 | foreach loop. You can't get there from here. See L<perlfunc/goto>. |
| 556 | |
| 557 | =item Can't "last" outside a loop block |
| 558 | |
| 559 | (F) A "last" statement was executed to break out of the current block, |
| 560 | except that there's this itty bitty problem called there isn't a |
| 561 | current block. Note that an "if" or "else" block doesn't count as a |
| 562 | "loopish" block, as doesn't a block given to sort(), map() or grep(). |
| 563 | You can usually double the curlies to get the same effect though, |
| 564 | because the inner curlies will be considered a block that loops once. |
| 565 | See L<perlfunc/last>. |
| 566 | |
| 567 | =item Can't "next" outside a loop block |
| 568 | |
| 569 | (F) A "next" statement was executed to reiterate the current block, but |
| 570 | there isn't a current block. Note that an "if" or "else" block doesn't |
| 571 | count as a "loopish" block, as doesn't a block given to sort(), map() |
| 572 | or grep(). You can usually double the curlies to get the same effect |
| 573 | though, because the inner curlies will be considered a block that |
| 574 | loops once. See L<perlfunc/next>. |
| 575 | |
| 576 | =item Can't read CRTL environ |
| 577 | |
| 578 | (S) A warning peculiar to VMS. Perl tried to read an element of %ENV |
| 579 | from the CRTL's internal environment array and discovered the array was |
| 580 | missing. You need to figure out where your CRTL misplaced its environ |
| 581 | or define F<PERL_ENV_TABLES> (see L<perlvms>) so that environ is not searched. |
| 582 | |
| 583 | =item Can't "redo" outside a loop block |
| 584 | |
| 585 | (F) A "redo" statement was executed to restart the current block, but |
| 586 | there isn't a current block. Note that an "if" or "else" block doesn't |
| 587 | count as a "loopish" block, as doesn't a block given to sort(), map() |
| 588 | or grep(). You can usually double the curlies to get the same effect |
| 589 | though, because the inner curlies will be considered a block that |
| 590 | loops once. See L<perlfunc/redo>. |
| 591 | |
| 592 | =item Can't bless non-reference value |
| 593 | |
| 594 | (F) Only hard references may be blessed. This is how Perl "enforces" |
| 595 | encapsulation of objects. See L<perlobj>. |
| 596 | |
| 597 | =item Can't break at that line |
| 598 | |
| 599 | (S) A warning intended to only be printed while running within the debugger, indicating |
| 600 | the line number specified wasn't the location of a statement that could |
| 601 | be stopped at. |
| 602 | |
| 603 | =item Can't call method "%s" in empty package "%s" |
| 604 | |
| 605 | (F) You called a method correctly, and it correctly indicated a package |
| 606 | functioning as a class, but that package doesn't have ANYTHING defined |
| 607 | in it, let alone methods. See L<perlobj>. |
| 608 | |
| 609 | =item Can't call method "%s" on unblessed reference |
| 610 | |
| 611 | (F) A method call must know in what package it's supposed to run. It |
| 612 | ordinarily finds this out from the object reference you supply, but |
| 613 | you didn't supply an object reference in this case. A reference isn't |
| 614 | an object reference until it has been blessed. See L<perlobj>. |
| 615 | |
| 616 | =item Can't call method "%s" without a package or object reference |
| 617 | |
| 618 | (F) You used the syntax of a method call, but the slot filled by the |
| 619 | object reference or package name contains an expression that returns |
| 620 | a defined value which is neither an object reference nor a package name. |
| 621 | Something like this will reproduce the error: |
| 622 | |
| 623 | $BADREF = 42; |
| 624 | process $BADREF 1,2,3; |
| 625 | $BADREF->process(1,2,3); |
| 626 | |
| 627 | =item Can't call method "%s" on an undefined value |
| 628 | |
| 629 | (F) You used the syntax of a method call, but the slot filled by the |
| 630 | object reference or package name contains an undefined value. |
| 631 | Something like this will reproduce the error: |
| 632 | |
| 633 | $BADREF = undef; |
| 634 | process $BADREF 1,2,3; |
| 635 | $BADREF->process(1,2,3); |
| 636 | |
| 637 | =item Can't chdir to %s |
| 638 | |
| 639 | (F) You called C<perl -x/foo/bar>, but C</foo/bar> is not a directory |
| 640 | that you can chdir to, possibly because it doesn't exist. |
| 641 | |
| 642 | =item Can't check filesystem of script "%s" for nosuid |
| 643 | |
| 644 | (P) For some reason you can't check the filesystem of the script for nosuid. |
| 645 | |
| 646 | =item Can't coerce %s to integer in %s |
| 647 | |
| 648 | (F) Certain types of SVs, in particular real symbol table entries |
| 649 | (typeglobs), can't be forced to stop being what they are. So you can't |
| 650 | say things like: |
| 651 | |
| 652 | *foo += 1; |
| 653 | |
| 654 | You CAN say |
| 655 | |
| 656 | $foo = *foo; |
| 657 | $foo += 1; |
| 658 | |
| 659 | but then $foo no longer contains a glob. |
| 660 | |
| 661 | =item Can't coerce %s to number in %s |
| 662 | |
| 663 | (F) Certain types of SVs, in particular real symbol table entries |
| 664 | (typeglobs), can't be forced to stop being what they are. |
| 665 | |
| 666 | =item Can't coerce %s to string in %s |
| 667 | |
| 668 | (F) Certain types of SVs, in particular real symbol table entries |
| 669 | (typeglobs), can't be forced to stop being what they are. |
| 670 | |
| 671 | =item Can't coerce array into hash |
| 672 | |
| 673 | (F) You used an array where a hash was expected, but the array has no |
| 674 | information on how to map from keys to array indices. You can do that |
| 675 | only with arrays that have a hash reference at index 0. |
| 676 | |
| 677 | =item Can't create pipe mailbox |
| 678 | |
| 679 | (P) An error peculiar to VMS. The process is suffering from exhausted quotas |
| 680 | or other plumbing problems. |
| 681 | |
| 682 | =item Can't declare %s in my |
| 683 | |
| 684 | (F) Only scalar, array, and hash variables may be declared as lexical variables. |
| 685 | They must have ordinary identifiers as names. |
| 686 | |
| 687 | =item Can't do inplace edit on %s: %s |
| 688 | |
| 689 | (S) The creation of the new file failed for the indicated reason. |
| 690 | |
| 691 | =item Can't do inplace edit without backup |
| 692 | |
| 693 | (F) You're on a system such as MS-DOS that gets confused if you try reading |
| 694 | from a deleted (but still opened) file. You have to say C<-i.bak>, or some |
| 695 | such. |
| 696 | |
| 697 | =item Can't do inplace edit: %s would not be unique |
| 698 | |
| 699 | (S) Your filesystem does not support filenames longer than 14 |
| 700 | characters and Perl was unable to create a unique filename during |
| 701 | inplace editing with the B<-i> switch. The file was ignored. |
| 702 | |
| 703 | =item Can't do inplace edit: %s is not a regular file |
| 704 | |
| 705 | (S) You tried to use the B<-i> switch on a special file, such as a file in |
| 706 | /dev, or a FIFO. The file was ignored. |
| 707 | |
| 708 | =item Can't do setegid! |
| 709 | |
| 710 | (P) The setegid() call failed for some reason in the setuid emulator |
| 711 | of suidperl. |
| 712 | |
| 713 | =item Can't do seteuid! |
| 714 | |
| 715 | (P) The setuid emulator of suidperl failed for some reason. |
| 716 | |
| 717 | =item Can't do setuid |
| 718 | |
| 719 | (F) This typically means that ordinary perl tried to exec suidperl to |
| 720 | do setuid emulation, but couldn't exec it. It looks for a name of the |
| 721 | form sperl5.000 in the same directory that the perl executable resides |
| 722 | under the name perl5.000, typically /usr/local/bin on Unix machines. |
| 723 | If the file is there, check the execute permissions. If it isn't, ask |
| 724 | your sysadmin why he and/or she removed it. |
| 725 | |
| 726 | =item Can't do waitpid with flags |
| 727 | |
| 728 | (F) This machine doesn't have either waitpid() or wait4(), so only waitpid() |
| 729 | without flags is emulated. |
| 730 | |
| 731 | =item Can't do {n,m} with n E<gt> m |
| 732 | |
| 733 | (F) Minima must be less than or equal to maxima. If you really want |
| 734 | your regexp to match something 0 times, just put {0}. See L<perlre>. |
| 735 | |
| 736 | =item Can't emulate -%s on #! line |
| 737 | |
| 738 | (F) The #! line specifies a switch that doesn't make sense at this point. |
| 739 | For example, it'd be kind of silly to put a B<-x> on the #! line. |
| 740 | |
| 741 | =item Can't exec "%s": %s |
| 742 | |
| 743 | (W) An system(), exec(), or piped open call could not execute the named |
| 744 | program for the indicated reason. Typical reasons include: the permissions |
| 745 | were wrong on the file, the file wasn't found in C<$ENV{PATH}>, the |
| 746 | executable in question was compiled for another architecture, or the |
| 747 | #! line in a script points to an interpreter that can't be run for |
| 748 | similar reasons. (Or maybe your system doesn't support #! at all.) |
| 749 | |
| 750 | =item Can't exec %s |
| 751 | |
| 752 | (F) Perl was trying to execute the indicated program for you because that's |
| 753 | what the #! line said. If that's not what you wanted, you may need to |
| 754 | mention "perl" on the #! line somewhere. |
| 755 | |
| 756 | =item Can't execute %s |
| 757 | |
| 758 | (F) You used the B<-S> switch, but the copies of the script to execute found |
| 759 | in the PATH did not have correct permissions. |
| 760 | |
| 761 | =item Can't find %s on PATH, '.' not in PATH |
| 762 | |
| 763 | (F) You used the B<-S> switch, but the script to execute could not be found |
| 764 | in the PATH, or at least not with the correct permissions. The script |
| 765 | exists in the current directory, but PATH prohibits running it. |
| 766 | |
| 767 | =item Can't find %s on PATH |
| 768 | |
| 769 | (F) You used the B<-S> switch, but the script to execute could not be found |
| 770 | in the PATH. |
| 771 | |
| 772 | =item Can't find label %s |
| 773 | |
| 774 | (F) You said to goto a label that isn't mentioned anywhere that it's possible |
| 775 | for us to go to. See L<perlfunc/goto>. |
| 776 | |
| 777 | =item Can't find string terminator %s anywhere before EOF |
| 778 | |
| 779 | (F) Perl strings can stretch over multiple lines. This message means that |
| 780 | the closing delimiter was omitted. Because bracketed quotes count nesting |
| 781 | levels, the following is missing its final parenthesis: |
| 782 | |
| 783 | print q(The character '(' starts a side comment.); |
| 784 | |
| 785 | If you're getting this error from a here-document, you may have |
| 786 | included unseen whitespace before or after your closing tag. A good |
| 787 | programmer's editor will have a way to help you find these characters. |
| 788 | |
| 789 | =item Can't fork |
| 790 | |
| 791 | (F) A fatal error occurred while trying to fork while opening a pipeline. |
| 792 | |
| 793 | =item Can't get filespec - stale stat buffer? |
| 794 | |
| 795 | (S) A warning peculiar to VMS. This arises because of the difference between |
| 796 | access checks under VMS and under the Unix model Perl assumes. Under VMS, |
| 797 | access checks are done by filename, rather than by bits in the stat buffer, so |
| 798 | that ACLs and other protections can be taken into account. Unfortunately, Perl |
| 799 | assumes that the stat buffer contains all the necessary information, and passes |
| 800 | it, instead of the filespec, to the access checking routine. It will try to |
| 801 | retrieve the filespec using the device name and FID present in the stat buffer, |
| 802 | but this works only if you haven't made a subsequent call to the CRTL stat() |
| 803 | routine, because the device name is overwritten with each call. If this warning |
| 804 | appears, the name lookup failed, and the access checking routine gave up and |
| 805 | returned FALSE, just to be conservative. (Note: The access checking routine |
| 806 | knows about the Perl C<stat> operator and file tests, so you shouldn't ever |
| 807 | see this warning in response to a Perl command; it arises only if some internal |
| 808 | code takes stat buffers lightly.) |
| 809 | |
| 810 | =item Can't get pipe mailbox device name |
| 811 | |
| 812 | (P) An error peculiar to VMS. After creating a mailbox to act as a pipe, Perl |
| 813 | can't retrieve its name for later use. |
| 814 | |
| 815 | =item Can't get SYSGEN parameter value for MAXBUF |
| 816 | |
| 817 | (P) An error peculiar to VMS. Perl asked $GETSYI how big you want your |
| 818 | mailbox buffers to be, and didn't get an answer. |
| 819 | |
| 820 | =item Can't goto subroutine outside a subroutine |
| 821 | |
| 822 | (F) The deeply magical "goto subroutine" call can only replace one subroutine |
| 823 | call for another. It can't manufacture one out of whole cloth. In general |
| 824 | you should be calling it out of only an AUTOLOAD routine anyway. See |
| 825 | L<perlfunc/goto>. |
| 826 | |
| 827 | =item Can't goto subroutine from an eval-string |
| 828 | |
| 829 | (F) The "goto subroutine" call can't be used to jump out of an eval "string". |
| 830 | (You can use it to jump out of an eval {BLOCK}, but you probably don't want to.) |
| 831 | |
| 832 | =item Can't ignore signal CHLD, forcing to default |
| 833 | |
| 834 | (W) Perl has detected that it is being run with the SIGCHLD signal |
| 835 | (sometimes known as SIGCLD) disabled. Since disabling this signal |
| 836 | will interfere with proper determination of exit status of child |
| 837 | processes, Perl has reset the signal to its default value. |
| 838 | This situation typically indicates that the parent program under |
| 839 | which Perl may be running (e.g. cron) is being very careless. |
| 840 | |
| 841 | =item Can't localize through a reference |
| 842 | |
| 843 | (F) You said something like C<local $$ref>, which Perl can't currently |
| 844 | handle, because when it goes to restore the old value of whatever $ref |
| 845 | pointed to after the scope of the local() is finished, it can't be |
| 846 | sure that $ref will still be a reference. |
| 847 | |
| 848 | =item Can't localize lexical variable %s |
| 849 | |
| 850 | (F) You used local on a variable name that was previously declared as a |
| 851 | lexical variable using "my". This is not allowed. If you want to |
| 852 | localize a package variable of the same name, qualify it with the |
| 853 | package name. |
| 854 | |
| 855 | =item Can't localize pseudo-hash element |
| 856 | |
| 857 | (F) You said something like C<local $ar-E<gt>{'key'}>, where $ar is |
| 858 | a reference to a pseudo-hash. That hasn't been implemented yet, but |
| 859 | you can get a similar effect by localizing the corresponding array |
| 860 | element directly -- C<local $ar-E<gt>[$ar-E<gt>[0]{'key'}]>. |
| 861 | |
| 862 | =item Can't locate auto/%s.al in @INC |
| 863 | |
| 864 | (F) A function (or method) was called in a package which allows autoload, |
| 865 | but there is no function to autoload. Most probable causes are a misprint |
| 866 | in a function/method name or a failure to C<AutoSplit> the file, say, by |
| 867 | doing C<make install>. |
| 868 | |
| 869 | =item Can't locate %s |
| 870 | |
| 871 | (F) You said to C<do> (or C<require>, or C<use>) a file that couldn't be |
| 872 | found. Perl looks for the file in all the locations mentioned in @INC, |
| 873 | unless the file name included the full path to the file. Perhaps you need |
| 874 | to set the PERL5LIB or PERL5OPT environment variable to say where the extra |
| 875 | library is, or maybe the script needs to add the library name to @INC. Or |
| 876 | maybe you just misspelled the name of the file. See L<perlfunc/require> |
| 877 | and L<lib>. |
| 878 | |
| 879 | =item Can't locate object method "%s" via package "%s" |
| 880 | |
| 881 | (F) You called a method correctly, and it correctly indicated a package |
| 882 | functioning as a class, but that package doesn't define that particular |
| 883 | method, nor does any of its base classes. See L<perlobj>. |
| 884 | |
| 885 | =item Can't locate package %s for @%s::ISA |
| 886 | |
| 887 | (W) The @ISA array contained the name of another package that doesn't seem |
| 888 | to exist. |
| 889 | |
| 890 | =item Can't make list assignment to \%ENV on this system |
| 891 | |
| 892 | (F) List assignment to %ENV is not supported on some systems, notably VMS. |
| 893 | |
| 894 | =item Can't modify %s in %s |
| 895 | |
| 896 | (F) You aren't allowed to assign to the item indicated, or otherwise try to |
| 897 | change it, such as with an auto-increment. |
| 898 | |
| 899 | =item Can't modify non-lvalue subroutine call |
| 900 | |
| 901 | (F) Subroutines meant to be used in lvalue context should be declared as |
| 902 | such, see L<perlsub/"Lvalue subroutines">. |
| 903 | |
| 904 | =item Can't modify nonexistent substring |
| 905 | |
| 906 | (P) The internal routine that does assignment to a substr() was handed |
| 907 | a NULL. |
| 908 | |
| 909 | =item Can't msgrcv to read-only var |
| 910 | |
| 911 | (F) The target of a msgrcv must be modifiable to be used as a receive |
| 912 | buffer. |
| 913 | |
| 914 | =item Can't open %s: %s |
| 915 | |
| 916 | (S) The implicit opening of a file through use of the C<E<lt>E<gt>> |
| 917 | filehandle, either implicitly under the C<-n> or C<-p> command-line |
| 918 | switches, or explicitly, failed for the indicated reason. Usually this |
| 919 | is because you don't have read permission for a file which you named |
| 920 | on the command line. |
| 921 | |
| 922 | =item Can't open bidirectional pipe |
| 923 | |
| 924 | (W) You tried to say C<open(CMD, "|cmd|")>, which is not supported. You can |
| 925 | try any of several modules in the Perl library to do this, such as |
| 926 | IPC::Open2. Alternately, direct the pipe's output to a file using "E<gt>", |
| 927 | and then read it in under a different file handle. |
| 928 | |
| 929 | =item Can't open error file %s as stderr |
| 930 | |
| 931 | (F) An error peculiar to VMS. Perl does its own command line redirection, and |
| 932 | couldn't open the file specified after '2E<gt>' or '2E<gt>E<gt>' on the |
| 933 | command line for writing. |
| 934 | |
| 935 | =item Can't open input file %s as stdin |
| 936 | |
| 937 | (F) An error peculiar to VMS. Perl does its own command line redirection, and |
| 938 | couldn't open the file specified after 'E<lt>' on the command line for reading. |
| 939 | |
| 940 | =item Can't open output file %s as stdout |
| 941 | |
| 942 | (F) An error peculiar to VMS. Perl does its own command line redirection, and |
| 943 | couldn't open the file specified after 'E<gt>' or 'E<gt>E<gt>' on the command |
| 944 | line for writing. |
| 945 | |
| 946 | =item Can't open output pipe (name: %s) |
| 947 | |
| 948 | (P) An error peculiar to VMS. Perl does its own command line redirection, and |
| 949 | couldn't open the pipe into which to send data destined for stdout. |
| 950 | |
| 951 | =item Can't open perl script "%s": %s |
| 952 | |
| 953 | (F) The script you specified can't be opened for the indicated reason. |
| 954 | |
| 955 | =item Can't redefine active sort subroutine %s |
| 956 | |
| 957 | (F) Perl optimizes the internal handling of sort subroutines and keeps |
| 958 | pointers into them. You tried to redefine one such sort subroutine when it |
| 959 | was currently active, which is not allowed. If you really want to do |
| 960 | this, you should write C<sort { &func } @x> instead of C<sort func @x>. |
| 961 | |
| 962 | =item Can't remove %s: %s, skipping file |
| 963 | |
| 964 | (S) You requested an inplace edit without creating a backup file. Perl |
| 965 | was unable to remove the original file to replace it with the modified |
| 966 | file. The file was left unmodified. |
| 967 | |
| 968 | =item Can't rename %s to %s: %s, skipping file |
| 969 | |
| 970 | (S) The rename done by the B<-i> switch failed for some reason, |
| 971 | probably because you don't have write permission to the directory. |
| 972 | |
| 973 | =item Can't reopen input pipe (name: %s) in binary mode |
| 974 | |
| 975 | (P) An error peculiar to VMS. Perl thought stdin was a pipe, and tried to |
| 976 | reopen it to accept binary data. Alas, it failed. |
| 977 | |
| 978 | =item Can't reswap uid and euid |
| 979 | |
| 980 | (P) The setreuid() call failed for some reason in the setuid emulator |
| 981 | of suidperl. |
| 982 | |
| 983 | =item Can't return outside a subroutine |
| 984 | |
| 985 | (F) The return statement was executed in mainline code, that is, where |
| 986 | there was no subroutine call to return out of. See L<perlsub>. |
| 987 | |
| 988 | =item Can't return %s from lvalue subroutine |
| 989 | |
| 990 | (F) Perl detected an attempt to return illegal lvalues (such |
| 991 | as temporary or readonly values) from a subroutine used as an lvalue. |
| 992 | This is not allowed. |
| 993 | |
| 994 | =item Can't stat script "%s" |
| 995 | |
| 996 | (P) For some reason you can't fstat() the script even though you have |
| 997 | it open already. Bizarre. |
| 998 | |
| 999 | =item Can't swap uid and euid |
| 1000 | |
| 1001 | (P) The setreuid() call failed for some reason in the setuid emulator |
| 1002 | of suidperl. |
| 1003 | |
| 1004 | =item Can't take log of %g |
| 1005 | |
| 1006 | (F) For ordinary real numbers, you can't take the logarithm of a |
| 1007 | negative number or zero. There's a Math::Complex package that comes |
| 1008 | standard with Perl, though, if you really want to do that for |
| 1009 | the negative numbers. |
| 1010 | |
| 1011 | =item Can't take sqrt of %g |
| 1012 | |
| 1013 | (F) For ordinary real numbers, you can't take the square root of a |
| 1014 | negative number. There's a Math::Complex package that comes standard |
| 1015 | with Perl, though, if you really want to do that. |
| 1016 | |
| 1017 | =item Can't undef active subroutine |
| 1018 | |
| 1019 | (F) You can't undefine a routine that's currently running. You can, |
| 1020 | however, redefine it while it's running, and you can even undef the |
| 1021 | redefined subroutine while the old routine is running. Go figure. |
| 1022 | |
| 1023 | =item Can't unshift |
| 1024 | |
| 1025 | (F) You tried to unshift an "unreal" array that can't be unshifted, such |
| 1026 | as the main Perl stack. |
| 1027 | |
| 1028 | =item Can't upgrade that kind of scalar |
| 1029 | |
| 1030 | (P) The internal sv_upgrade routine adds "members" to an SV, making |
| 1031 | it into a more specialized kind of SV. The top several SV types are |
| 1032 | so specialized, however, that they cannot be interconverted. This |
| 1033 | message indicates that such a conversion was attempted. |
| 1034 | |
| 1035 | =item Can't upgrade to undef |
| 1036 | |
| 1037 | (P) The undefined SV is the bottom of the totem pole, in the scheme |
| 1038 | of upgradability. Upgrading to undef indicates an error in the |
| 1039 | code calling sv_upgrade. |
| 1040 | |
| 1041 | =item Can't use %%! because Errno.pm is not available |
| 1042 | |
| 1043 | (F) The first time the %! hash is used, perl automatically loads the |
| 1044 | Errno.pm module. The Errno module is expected to tie the %! hash to |
| 1045 | provide symbolic names for C<$!> errno values. |
| 1046 | |
| 1047 | =item Can't use "my %s" in sort comparison |
| 1048 | |
| 1049 | (F) The global variables $a and $b are reserved for sort comparisons. |
| 1050 | You mentioned $a or $b in the same line as the E<lt>=E<gt> or cmp operator, |
| 1051 | and the variable had earlier been declared as a lexical variable. |
| 1052 | Either qualify the sort variable with the package name, or rename the |
| 1053 | lexical variable. |
| 1054 | |
| 1055 | =item Bad evalled substitution pattern |
| 1056 | |
| 1057 | (F) You've used the /e switch to evaluate the replacement for a |
| 1058 | substitution, but perl found a syntax error in the code to evaluate, |
| 1059 | most likely an unexpected right brace '}'. |
| 1060 | |
| 1061 | =item Can't use %s for loop variable |
| 1062 | |
| 1063 | (F) Only a simple scalar variable may be used as a loop variable on a foreach. |
| 1064 | |
| 1065 | =item Can't use %s ref as %s ref |
| 1066 | |
| 1067 | (F) You've mixed up your reference types. You have to dereference a |
| 1068 | reference of the type needed. You can use the ref() function to |
| 1069 | test the type of the reference, if need be. |
| 1070 | |
| 1071 | =item Can't use \%c to mean $%c in expression |
| 1072 | |
| 1073 | (W) In an ordinary expression, backslash is a unary operator that creates |
| 1074 | a reference to its argument. The use of backslash to indicate a backreference |
| 1075 | to a matched substring is valid only as part of a regular expression pattern. |
| 1076 | Trying to do this in ordinary Perl code produces a value that prints |
| 1077 | out looking like SCALAR(0xdecaf). Use the $1 form instead. |
| 1078 | |
| 1079 | =item Can't use bareword ("%s") as %s ref while "strict refs" in use |
| 1080 | |
| 1081 | (F) Only hard references are allowed by "strict refs". Symbolic references |
| 1082 | are disallowed. See L<perlref>. |
| 1083 | |
| 1084 | =item Can't use string ("%s") as %s ref while "strict refs" in use |
| 1085 | |
| 1086 | (F) Only hard references are allowed by "strict refs". Symbolic references |
| 1087 | are disallowed. See L<perlref>. |
| 1088 | |
| 1089 | =item Can't use an undefined value as %s reference |
| 1090 | |
| 1091 | (F) A value used as either a hard reference or a symbolic reference must |
| 1092 | be a defined value. This helps to delurk some insidious errors. |
| 1093 | |
| 1094 | =item Can't use global %s in "my" |
| 1095 | |
| 1096 | (F) You tried to declare a magical variable as a lexical variable. This is |
| 1097 | not allowed, because the magic can be tied to only one location (namely |
| 1098 | the global variable) and it would be incredibly confusing to have |
| 1099 | variables in your program that looked like magical variables but |
| 1100 | weren't. |
| 1101 | |
| 1102 | =item Can't use subscript on %s |
| 1103 | |
| 1104 | (F) The compiler tried to interpret a bracketed expression as a |
| 1105 | subscript. But to the left of the brackets was an expression that |
| 1106 | didn't look like an array reference, or anything else subscriptable. |
| 1107 | |
| 1108 | =item Can't weaken a nonreference |
| 1109 | |
| 1110 | (F) You attempted to weaken something that was not a reference. Only |
| 1111 | references can be weakened. |
| 1112 | |
| 1113 | =item Can't x= to read-only value |
| 1114 | |
| 1115 | (F) You tried to repeat a constant value (often the undefined value) with |
| 1116 | an assignment operator, which implies modifying the value itself. |
| 1117 | Perhaps you need to copy the value to a temporary, and repeat that. |
| 1118 | |
| 1119 | =item Can't find an opnumber for "%s" |
| 1120 | |
| 1121 | (F) A string of a form C<CORE::word> was given to prototype(), but |
| 1122 | there is no builtin with the name C<word>. |
| 1123 | |
| 1124 | =item Can't resolve method `%s' overloading `%s' in package `%s' |
| 1125 | |
| 1126 | (F|P) Error resolving overloading specified by a method name (as |
| 1127 | opposed to a subroutine reference): no such method callable via the |
| 1128 | package. If method name is C<???>, this is an internal error. |
| 1129 | |
| 1130 | =item Character class [:%s:] unknown |
| 1131 | |
| 1132 | (F) The class in the character class [: :] syntax is unknown. |
| 1133 | See L<perlre>. |
| 1134 | |
| 1135 | =item Character class syntax [%s] belongs inside character classes |
| 1136 | |
| 1137 | (W) The character class constructs [: :], [= =], and [. .] go |
| 1138 | I<inside> character classes, the [] are part of the construct, |
| 1139 | for example: /[012[:alpha:]345]/. Note that [= =] and [. .] |
| 1140 | are not currently implemented; they are simply placeholders for |
| 1141 | future extensions. |
| 1142 | |
| 1143 | =item Character class syntax [. .] is reserved for future extensions |
| 1144 | |
| 1145 | (W) Within regular expression character classes ([]) the syntax beginning |
| 1146 | with "[." and ending with ".]" is reserved for future extensions. |
| 1147 | If you need to represent those character sequences inside a regular |
| 1148 | expression character class, just quote the square brackets with the |
| 1149 | backslash: "\[." and ".\]". |
| 1150 | |
| 1151 | =item Character class syntax [= =] is reserved for future extensions |
| 1152 | |
| 1153 | (W) Within regular expression character classes ([]) the syntax |
| 1154 | beginning with "[=" and ending with "=]" is reserved for future extensions. |
| 1155 | If you need to represent those character sequences inside a regular |
| 1156 | expression character class, just quote the square brackets with the |
| 1157 | backslash: "\[=" and "=\]". |
| 1158 | |
| 1159 | =item chmod: mode argument is missing initial 0 |
| 1160 | |
| 1161 | (W) A novice will sometimes say |
| 1162 | |
| 1163 | chmod 777, $filename |
| 1164 | |
| 1165 | not realizing that 777 will be interpreted as a decimal number, equivalent |
| 1166 | to 01411. Octal constants are introduced with a leading 0 in Perl, as in C. |
| 1167 | |
| 1168 | =item Close on unopened file E<lt>%sE<gt> |
| 1169 | |
| 1170 | (W) You tried to close a filehandle that was never opened. |
| 1171 | |
| 1172 | =item Compilation failed in require |
| 1173 | |
| 1174 | (F) Perl could not compile a file specified in a C<require> statement. |
| 1175 | Perl uses this generic message when none of the errors that it encountered |
| 1176 | were severe enough to halt compilation immediately. |
| 1177 | |
| 1178 | =item Complex regular subexpression recursion limit (%d) exceeded |
| 1179 | |
| 1180 | (W) The regular expression engine uses recursion in complex situations |
| 1181 | where back-tracking is required. Recursion depth is limited to 32766, |
| 1182 | or perhaps less in architectures where the stack cannot grow |
| 1183 | arbitrarily. ("Simple" and "medium" situations are handled without |
| 1184 | recursion and are not subject to a limit.) Try shortening the string |
| 1185 | under examination; looping in Perl code (e.g. with C<while>) rather |
| 1186 | than in the regular expression engine; or rewriting the regular |
| 1187 | expression so that it is simpler or backtracks less. (See L<perlbook> |
| 1188 | for information on I<Mastering Regular Expressions>.) |
| 1189 | |
| 1190 | =item connect() on closed socket |
| 1191 | |
| 1192 | (W) You tried to do a connect on a closed socket. Did you forget to check |
| 1193 | the return value of your socket() call? See L<perlfunc/connect>. |
| 1194 | |
| 1195 | =item Constant is not %s reference |
| 1196 | |
| 1197 | (F) A constant value (perhaps declared using the C<use constant> pragma) |
| 1198 | is being dereferenced, but it amounts to the wrong type of reference. The |
| 1199 | message indicates the type of reference that was expected. This usually |
| 1200 | indicates a syntax error in dereferencing the constant value. |
| 1201 | See L<perlsub/"Constant Functions"> and L<constant>. |
| 1202 | |
| 1203 | =item Constant subroutine %s redefined |
| 1204 | |
| 1205 | (S) You redefined a subroutine which had previously been eligible for |
| 1206 | inlining. See L<perlsub/"Constant Functions"> for commentary and |
| 1207 | workarounds. |
| 1208 | |
| 1209 | =item Constant subroutine %s undefined |
| 1210 | |
| 1211 | (S) You undefined a subroutine which had previously been eligible for |
| 1212 | inlining. See L<perlsub/"Constant Functions"> for commentary and |
| 1213 | workarounds. |
| 1214 | |
| 1215 | =item constant(%s): %%^H is not localized |
| 1216 | |
| 1217 | (F) When setting compile-time-lexicalized hash %^H one should set the |
| 1218 | corresponding bit of $^H as well. |
| 1219 | |
| 1220 | =item constant(%s): %s |
| 1221 | |
| 1222 | (F) Compile-time-substitutions (such as overloaded constants and |
| 1223 | character names) were not correctly set up. |
| 1224 | |
| 1225 | =item Copy method did not return a reference |
| 1226 | |
| 1227 | (F) The method which overloads "=" is buggy. See L<overload/Copy Constructor>. |
| 1228 | |
| 1229 | =item Corrupt malloc ptr 0x%lx at 0x%lx |
| 1230 | |
| 1231 | (P) The malloc package that comes with Perl had an internal failure. |
| 1232 | |
| 1233 | =item corrupted regexp pointers |
| 1234 | |
| 1235 | (P) The regular expression engine got confused by what the regular |
| 1236 | expression compiler gave it. |
| 1237 | |
| 1238 | =item corrupted regexp program |
| 1239 | |
| 1240 | (P) The regular expression engine got passed a regexp program without |
| 1241 | a valid magic number. |
| 1242 | |
| 1243 | =item Deep recursion on subroutine "%s" |
| 1244 | |
| 1245 | (W) This subroutine has called itself (directly or indirectly) 100 |
| 1246 | times more than it has returned. This probably indicates an infinite |
| 1247 | recursion, unless you're writing strange benchmark programs, in which |
| 1248 | case it indicates something else. |
| 1249 | |
| 1250 | =item defined(@array) is deprecated |
| 1251 | |
| 1252 | (D) defined() is not usually useful on arrays because it checks for an |
| 1253 | undefined I<scalar> value. If you want to see if the array is empty, |
| 1254 | just use C<if (@array) { # not empty }> for example. |
| 1255 | |
| 1256 | =item defined(%hash) is deprecated |
| 1257 | |
| 1258 | (D) defined() is not usually useful on hashes because it checks for an |
| 1259 | undefined I<scalar> value. If you want to see if the hash is empty, |
| 1260 | just use C<if (%hash) { # not empty }> for example. |
| 1261 | |
| 1262 | =item Delimiter for here document is too long |
| 1263 | |
| 1264 | (F) In a here document construct like C<E<lt>E<lt>FOO>, the label |
| 1265 | C<FOO> is too long for Perl to handle. You have to be seriously |
| 1266 | twisted to write code that triggers this error. |
| 1267 | |
| 1268 | =item Did not produce a valid header |
| 1269 | |
| 1270 | See Server error. |
| 1271 | |
| 1272 | =item Did you mean &%s instead? |
| 1273 | |
| 1274 | (W) You probably referred to an imported subroutine &FOO as $FOO or some such. |
| 1275 | |
| 1276 | =item Did you mean $ or @ instead of %? |
| 1277 | |
| 1278 | (W) You probably said %hash{$key} when you meant $hash{$key} or @hash{@keys}. |
| 1279 | On the other hand, maybe you just meant %hash and got carried away. |
| 1280 | |
| 1281 | =item Died |
| 1282 | |
| 1283 | (F) You passed die() an empty string (the equivalent of C<die "">) or |
| 1284 | you called it with no args and both C<$@> and C<$_> were empty. |
| 1285 | |
| 1286 | =item Do you need to predeclare %s? |
| 1287 | |
| 1288 | (S) This is an educated guess made in conjunction with the message "%s |
| 1289 | found where operator expected". It often means a subroutine or module |
| 1290 | name is being referenced that hasn't been declared yet. This may be |
| 1291 | because of ordering problems in your file, or because of a missing |
| 1292 | "sub", "package", "require", or "use" statement. If you're |
| 1293 | referencing something that isn't defined yet, you don't actually have |
| 1294 | to define the subroutine or package before the current location. You |
| 1295 | can use an empty "sub foo;" or "package FOO;" to enter a "forward" |
| 1296 | declaration. |
| 1297 | |
| 1298 | =item Document contains no data |
| 1299 | |
| 1300 | See Server error. |
| 1301 | |
| 1302 | =item Don't know how to handle magic of type '%s' |
| 1303 | |
| 1304 | (P) The internal handling of magical variables has been cursed. |
| 1305 | |
| 1306 | =item do_study: out of memory |
| 1307 | |
| 1308 | (P) This should have been caught by safemalloc() instead. |
| 1309 | |
| 1310 | =item Duplicate free() ignored |
| 1311 | |
| 1312 | (S) An internal routine called free() on something that had already |
| 1313 | been freed. |
| 1314 | |
| 1315 | =item elseif should be elsif |
| 1316 | |
| 1317 | (S) There is no keyword "elseif" in Perl because Larry thinks it's |
| 1318 | ugly. Your code will be interpreted as an attempt to call a method |
| 1319 | named "elseif" for the class returned by the following block. This is |
| 1320 | unlikely to be what you want. |
| 1321 | |
| 1322 | =item %s failed--call queue aborted |
| 1323 | |
| 1324 | (F) An untrapped exception was raised while executing a STOP, INIT, or |
| 1325 | END subroutine. Processing of the remainder of the queue of such |
| 1326 | routines has been prematurely ended. |
| 1327 | |
| 1328 | =item entering effective %s failed |
| 1329 | |
| 1330 | (F) While under the C<use filetest> pragma, switching the real and |
| 1331 | effective uids or gids failed. |
| 1332 | |
| 1333 | =item Error converting file specification %s |
| 1334 | |
| 1335 | (F) An error peculiar to VMS. Because Perl may have to deal with file |
| 1336 | specifications in either VMS or Unix syntax, it converts them to a |
| 1337 | single form when it must operate on them directly. Either you've |
| 1338 | passed an invalid file specification to Perl, or you've found a |
| 1339 | case the conversion routines don't handle. Drat. |
| 1340 | |
| 1341 | =item %s: Eval-group in insecure regular expression |
| 1342 | |
| 1343 | (F) Perl detected tainted data when trying to compile a regular expression |
| 1344 | that contains the C<(?{ ... })> zero-width assertion, which is unsafe. |
| 1345 | See L<perlre/(?{ code })>, and L<perlsec>. |
| 1346 | |
| 1347 | =item %s: Eval-group not allowed, use re 'eval' |
| 1348 | |
| 1349 | (F) A regular expression contained the C<(?{ ... })> zero-width assertion, |
| 1350 | but that construct is only allowed when the C<use re 'eval'> pragma is |
| 1351 | in effect. See L<perlre/(?{ code })>. |
| 1352 | |
| 1353 | =item %s: Eval-group not allowed at run time |
| 1354 | |
| 1355 | (F) Perl tried to compile a regular expression containing the C<(?{ ... })> |
| 1356 | zero-width assertion at run time, as it would when the pattern contains |
| 1357 | interpolated values. Since that is a security risk, it is not allowed. |
| 1358 | If you insist, you may still do this by explicitly building the pattern |
| 1359 | from an interpolated string at run time and using that in an eval(). |
| 1360 | See L<perlre/(?{ code })>. |
| 1361 | |
| 1362 | =item Excessively long <> operator |
| 1363 | |
| 1364 | (F) The contents of a <> operator may not exceed the maximum size of a |
| 1365 | Perl identifier. If you're just trying to glob a long list of |
| 1366 | filenames, try using the glob() operator, or put the filenames into a |
| 1367 | variable and glob that. |
| 1368 | |
| 1369 | =item Execution of %s aborted due to compilation errors |
| 1370 | |
| 1371 | (F) The final summary message when a Perl compilation fails. |
| 1372 | |
| 1373 | =item Exiting eval via %s |
| 1374 | |
| 1375 | (W) You are exiting an eval by unconventional means, such as |
| 1376 | a goto, or a loop control statement. |
| 1377 | |
| 1378 | =item Exiting pseudo-block via %s |
| 1379 | |
| 1380 | (W) You are exiting a rather special block construct (like a sort block or |
| 1381 | subroutine) by unconventional means, such as a goto, or a loop control |
| 1382 | statement. See L<perlfunc/sort>. |
| 1383 | |
| 1384 | =item Exiting subroutine via %s |
| 1385 | |
| 1386 | (W) You are exiting a subroutine by unconventional means, such as |
| 1387 | a goto, or a loop control statement. |
| 1388 | |
| 1389 | =item Exiting substitution via %s |
| 1390 | |
| 1391 | (W) You are exiting a substitution by unconventional means, such as |
| 1392 | a return, a goto, or a loop control statement. |
| 1393 | |
| 1394 | =item Explicit blessing to '' (assuming package main) |
| 1395 | |
| 1396 | (W) You are blessing a reference to a zero length string. This has |
| 1397 | the effect of blessing the reference into the package main. This is |
| 1398 | usually not what you want. Consider providing a default target |
| 1399 | package, e.g. bless($ref, $p || 'MyPackage'); |
| 1400 | |
| 1401 | =item false [] range "%s" in regexp |
| 1402 | |
| 1403 | (W) A character class range must start and end at a literal character, not |
| 1404 | another character class like C<\d> or C<[:alpha:]>. The "-" in your false |
| 1405 | range is interpreted as a literal "-". Consider quoting the "-", "\-". |
| 1406 | See L<perlre>. |
| 1407 | |
| 1408 | =item Fatal VMS error at %s, line %d |
| 1409 | |
| 1410 | (P) An error peculiar to VMS. Something untoward happened in a VMS system |
| 1411 | service or RTL routine; Perl's exit status should provide more details. The |
| 1412 | filename in "at %s" and the line number in "line %d" tell you which section of |
| 1413 | the Perl source code is distressed. |
| 1414 | |
| 1415 | =item fcntl is not implemented |
| 1416 | |
| 1417 | (F) Your machine apparently doesn't implement fcntl(). What is this, a |
| 1418 | PDP-11 or something? |
| 1419 | |
| 1420 | =item Filehandle %s never opened |
| 1421 | |
| 1422 | (W) An I/O operation was attempted on a filehandle that was never initialized. |
| 1423 | You need to do an open() or a socket() call, or call a constructor from |
| 1424 | the FileHandle package. |
| 1425 | |
| 1426 | =item Filehandle %s opened only for input |
| 1427 | |
| 1428 | (W) You tried to write on a read-only filehandle. If you |
| 1429 | intended it to be a read-write filehandle, you needed to open it with |
| 1430 | "+E<lt>" or "+E<gt>" or "+E<gt>E<gt>" instead of with "E<lt>" or nothing. If |
| 1431 | you intended only to write the file, use "E<gt>" or "E<gt>E<gt>". See |
| 1432 | L<perlfunc/open>. |
| 1433 | |
| 1434 | =item Filehandle %s opened only for output |
| 1435 | |
| 1436 | (W) You tried to read from a filehandle opened only for writing. If you |
| 1437 | intended it to be a read/write filehandle, you needed to open it with |
| 1438 | "+E<lt>" or "+E<gt>" or "+E<gt>E<gt>" instead of with "E<lt>" or nothing. If |
| 1439 | you intended only to read from the file, use "E<lt>". See |
| 1440 | L<perlfunc/open>. |
| 1441 | |
| 1442 | =item Final $ should be \$ or $name |
| 1443 | |
| 1444 | (F) You must now decide whether the final $ in a string was meant to be |
| 1445 | a literal dollar sign, or was meant to introduce a variable name |
| 1446 | that happens to be missing. So you have to put either the backslash or |
| 1447 | the name. |
| 1448 | |
| 1449 | =item Final @ should be \@ or @name |
| 1450 | |
| 1451 | (F) You must now decide whether the final @ in a string was meant to be |
| 1452 | a literal "at" sign, or was meant to introduce a variable name |
| 1453 | that happens to be missing. So you have to put either the backslash or |
| 1454 | the name. |
| 1455 | |
| 1456 | =item Format %s redefined |
| 1457 | |
| 1458 | (W) You redefined a format. To suppress this warning, say |
| 1459 | |
| 1460 | { |
| 1461 | no warnings; |
| 1462 | eval "format NAME =..."; |
| 1463 | } |
| 1464 | |
| 1465 | =item Format not terminated |
| 1466 | |
| 1467 | (F) A format must be terminated by a line with a solitary dot. Perl got |
| 1468 | to the end of your file without finding such a line. |
| 1469 | |
| 1470 | =item Found = in conditional, should be == |
| 1471 | |
| 1472 | (W) You said |
| 1473 | |
| 1474 | if ($foo = 123) |
| 1475 | |
| 1476 | when you meant |
| 1477 | |
| 1478 | if ($foo == 123) |
| 1479 | |
| 1480 | (or something like that). |
| 1481 | |
| 1482 | =item gdbm store returned %d, errno %d, key "%s" |
| 1483 | |
| 1484 | (S) A warning from the GDBM_File extension that a store failed. |
| 1485 | |
| 1486 | =item gethostent not implemented |
| 1487 | |
| 1488 | (F) Your C library apparently doesn't implement gethostent(), probably |
| 1489 | because if it did, it'd feel morally obligated to return every hostname |
| 1490 | on the Internet. |
| 1491 | |
| 1492 | =item get%sname() on closed socket |
| 1493 | |
| 1494 | (W) You tried to get a socket or peer socket name on a closed socket. |
| 1495 | Did you forget to check the return value of your socket() call? |
| 1496 | |
| 1497 | =item getpwnam returned invalid UIC %#o for user "%s" |
| 1498 | |
| 1499 | (S) A warning peculiar to VMS. The call to C<sys$getuai> underlying the |
| 1500 | C<getpwnam> operator returned an invalid UIC. |
| 1501 | |
| 1502 | =item Glob not terminated |
| 1503 | |
| 1504 | (F) The lexer saw a left angle bracket in a place where it was expecting |
| 1505 | a term, so it's looking for the corresponding right angle bracket, and not |
| 1506 | finding it. Chances are you left some needed parentheses out earlier in |
| 1507 | the line, and you really meant a "less than". |
| 1508 | |
| 1509 | =item Global symbol "%s" requires explicit package name |
| 1510 | |
| 1511 | (F) You've said "use strict vars", which indicates that all variables |
| 1512 | must either be lexically scoped (using "my"), or explicitly qualified to |
| 1513 | say which package the global variable is in (using "::"). |
| 1514 | |
| 1515 | =item goto must have label |
| 1516 | |
| 1517 | (F) Unlike with "next" or "last", you're not allowed to goto an |
| 1518 | unspecified destination. See L<perlfunc/goto>. |
| 1519 | |
| 1520 | =item Had to create %s unexpectedly |
| 1521 | |
| 1522 | (S) A routine asked for a symbol from a symbol table that ought to have |
| 1523 | existed already, but for some reason it didn't, and had to be created on |
| 1524 | an emergency basis to prevent a core dump. |
| 1525 | |
| 1526 | =item Hash %%s missing the % in argument %d of %s() |
| 1527 | |
| 1528 | (D) Really old Perl let you omit the % on hash names in some spots. This |
| 1529 | is now heavily deprecated. |
| 1530 | |
| 1531 | =item Hexadecimal number > 0xffffffff non-portable |
| 1532 | |
| 1533 | (W) The hexadecimal number you specified is larger than 2**32-1 |
| 1534 | (4294967295) and therefore non-portable between systems. See |
| 1535 | L<perlport> for more on portability concerns. |
| 1536 | |
| 1537 | =item Identifier too long |
| 1538 | |
| 1539 | (F) Perl limits identifiers (names for variables, functions, etc.) to |
| 1540 | about 250 characters for simple names, and somewhat more for compound |
| 1541 | names (like C<$A::B>). You've exceeded Perl's limits. Future |
| 1542 | versions of Perl are likely to eliminate these arbitrary limitations. |
| 1543 | |
| 1544 | =item Ill-formed CRTL environ value "%s" |
| 1545 | |
| 1546 | (W) A warning peculiar to VMS. Perl tried to read the CRTL's internal |
| 1547 | environ array, and encountered an element without the C<=> delimiter |
| 1548 | used to spearate keys from values. The element is ignored. |
| 1549 | |
| 1550 | =item Ill-formed message in prime_env_iter: |%s| |
| 1551 | |
| 1552 | (W) A warning peculiar to VMS. Perl tried to read a logical name |
| 1553 | or CLI symbol definition when preparing to iterate over %ENV, and |
| 1554 | didn't see the expected delimiter between key and value, so the |
| 1555 | line was ignored. |
| 1556 | |
| 1557 | =item Illegal character %s (carriage return) |
| 1558 | |
| 1559 | (F) A carriage return character was found in the input. This is an |
| 1560 | error, and not a warning, because carriage return characters can break |
| 1561 | multi-line strings, including here documents (e.g., C<print E<lt>E<lt>EOF;>). |
| 1562 | |
| 1563 | Under Unix, this error is usually caused by executing Perl code -- |
| 1564 | either the main program, a module, or an eval'd string -- that was |
| 1565 | transferred over a network connection from a non-Unix system without |
| 1566 | properly converting the text file format. |
| 1567 | |
| 1568 | Under systems that use something other than '\n' to delimit lines of |
| 1569 | text, this error can also be caused by reading Perl code from a file |
| 1570 | handle that is in binary mode (as set by the C<binmode> operator). |
| 1571 | |
| 1572 | In either case, the Perl code in question will probably need to be |
| 1573 | converted with something like C<s/\x0D\x0A?/\n/g> before it can be |
| 1574 | executed. |
| 1575 | |
| 1576 | =item Illegal division by zero |
| 1577 | |
| 1578 | (F) You tried to divide a number by 0. Either something was wrong in your |
| 1579 | logic, or you need to put a conditional in to guard against meaningless input. |
| 1580 | |
| 1581 | =item Illegal modulus zero |
| 1582 | |
| 1583 | (F) You tried to divide a number by 0 to get the remainder. Most numbers |
| 1584 | don't take to this kindly. |
| 1585 | |
| 1586 | =item Illegal binary digit %s |
| 1587 | |
| 1588 | (F) You used a digit other than 0 or 1 in a binary number. |
| 1589 | |
| 1590 | =item Illegal octal digit %s |
| 1591 | |
| 1592 | (F) You used an 8 or 9 in a octal number. |
| 1593 | |
| 1594 | =item Illegal binary digit %s ignored |
| 1595 | |
| 1596 | (W) You may have tried to use a digit other than 0 or 1 in a binary number. |
| 1597 | Interpretation of the binary number stopped before the offending digit. |
| 1598 | |
| 1599 | =item Illegal octal digit %s ignored |
| 1600 | |
| 1601 | (W) You may have tried to use an 8 or 9 in a octal number. Interpretation |
| 1602 | of the octal number stopped before the 8 or 9. |
| 1603 | |
| 1604 | =item Illegal hexadecimal digit %s ignored |
| 1605 | |
| 1606 | (W) You may have tried to use a character other than 0 - 9 or A - F, a - f |
| 1607 | in a hexadecimal number. Interpretation of the hexadecimal number stopped |
| 1608 | before the illegal character. |
| 1609 | |
| 1610 | =item Illegal number of bits in vec |
| 1611 | |
| 1612 | (F) The number of bits in vec() (the third argument) must be a power of |
| 1613 | two from 1 to 32 (or 64, if your platform supports that). |
| 1614 | |
| 1615 | =item Illegal switch in PERL5OPT: %s |
| 1616 | |
| 1617 | (X) The PERL5OPT environment variable may only be used to set the |
| 1618 | following switches: B<-[DIMUdmw]>. |
| 1619 | |
| 1620 | =item In string, @%s now must be written as \@%s |
| 1621 | |
| 1622 | (F) It used to be that Perl would try to guess whether you wanted an |
| 1623 | array interpolated or a literal @. It did this when the string was first |
| 1624 | used at runtime. Now strings are parsed at compile time, and ambiguous |
| 1625 | instances of @ must be disambiguated, either by prepending a backslash to |
| 1626 | indicate a literal, or by declaring (or using) the array within the |
| 1627 | program before the string (lexically). (Someday it will simply assume |
| 1628 | that an unbackslashed @ interpolates an array.) |
| 1629 | |
| 1630 | =item Insecure dependency in %s |
| 1631 | |
| 1632 | (F) You tried to do something that the tainting mechanism didn't like. |
| 1633 | The tainting mechanism is turned on when you're running setuid or setgid, |
| 1634 | or when you specify B<-T> to turn it on explicitly. The tainting mechanism |
| 1635 | labels all data that's derived directly or indirectly from the user, |
| 1636 | who is considered to be unworthy of your trust. If any such data is |
| 1637 | used in a "dangerous" operation, you get this error. See L<perlsec> |
| 1638 | for more information. |
| 1639 | |
| 1640 | =item Insecure directory in %s |
| 1641 | |
| 1642 | (F) You can't use system(), exec(), or a piped open in a setuid or setgid |
| 1643 | script if C<$ENV{PATH}> contains a directory that is writable by the world. |
| 1644 | See L<perlsec>. |
| 1645 | |
| 1646 | =item Insecure $ENV{%s} while running %s |
| 1647 | |
| 1648 | (F) You can't use system(), exec(), or a piped open in a setuid or |
| 1649 | setgid script if any of C<$ENV{PATH}>, C<$ENV{IFS}>, C<$ENV{CDPATH}>, |
| 1650 | C<$ENV{ENV}> or C<$ENV{BASH_ENV}> are derived from data supplied (or |
| 1651 | potentially supplied) by the user. The script must set the path to a |
| 1652 | known value, using trustworthy data. See L<perlsec>. |
| 1653 | |
| 1654 | =item Integer overflow in %s number |
| 1655 | |
| 1656 | (W) The hexadecimal, octal or binary number you have specified either |
| 1657 | as a literal or as an argument to hex() or oct() is too big for your |
| 1658 | architecture, and has been converted to a floating point number. On a |
| 1659 | 32-bit architecture the largest hexadecimal, octal or binary number |
| 1660 | representable without overflow is 0xFFFFFFFF, 037777777777, or |
| 1661 | 0b11111111111111111111111111111111 respectively. Note that Perl |
| 1662 | transparently promotes all numbers to a floating point representation |
| 1663 | internally--subject to loss of precision errors in subsequent |
| 1664 | operations. |
| 1665 | |
| 1666 | =item Internal inconsistency in tracking vforks |
| 1667 | |
| 1668 | (S) A warning peculiar to VMS. Perl keeps track of the number |
| 1669 | of times you've called C<fork> and C<exec>, to determine |
| 1670 | whether the current call to C<exec> should affect the current |
| 1671 | script or a subprocess (see L<perlvms/"exec LIST">). Somehow, this count |
| 1672 | has become scrambled, so Perl is making a guess and treating |
| 1673 | this C<exec> as a request to terminate the Perl script |
| 1674 | and execute the specified command. |
| 1675 | |
| 1676 | =item internal disaster in regexp |
| 1677 | |
| 1678 | (P) Something went badly wrong in the regular expression parser. |
| 1679 | |
| 1680 | =item glob failed (%s) |
| 1681 | |
| 1682 | (W) Something went wrong with the external program(s) used for C<glob> |
| 1683 | and C<E<lt>*.cE<gt>>. Usually, this means that you supplied a C<glob> |
| 1684 | pattern that caused the external program to fail and exit with a nonzero |
| 1685 | status. If the message indicates that the abnormal exit resulted in a |
| 1686 | coredump, this may also mean that your csh (C shell) is broken. If so, |
| 1687 | you should change all of the csh-related variables in config.sh: If you |
| 1688 | have tcsh, make the variables refer to it as if it were csh (e.g. |
| 1689 | C<full_csh='/usr/bin/tcsh'>); otherwise, make them all empty (except that |
| 1690 | C<d_csh> should be C<'undef'>) so that Perl will think csh is missing. |
| 1691 | In either case, after editing config.sh, run C<./Configure -S> and |
| 1692 | rebuild Perl. |
| 1693 | |
| 1694 | =item internal urp in regexp at /%s/ |
| 1695 | |
| 1696 | (P) Something went badly awry in the regular expression parser. |
| 1697 | |
| 1698 | =item Invalid %s attribute: %s |
| 1699 | |
| 1700 | The indicated attribute for a subroutine or variable was not recognized |
| 1701 | by Perl or by a user-supplied handler. See L<attributes>. |
| 1702 | |
| 1703 | =item Invalid %s attributes: %s |
| 1704 | |
| 1705 | The indicated attributes for a subroutine or variable were not recognized |
| 1706 | by Perl or by a user-supplied handler. See L<attributes>. |
| 1707 | |
| 1708 | =item invalid [] range "%s" in regexp |
| 1709 | |
| 1710 | (F) The range specified in a character class had a minimum character |
| 1711 | greater than the maximum character. See L<perlre>. |
| 1712 | |
| 1713 | =item Invalid conversion in %s: "%s" |
| 1714 | |
| 1715 | (W) Perl does not understand the given format conversion. |
| 1716 | See L<perlfunc/sprintf>. |
| 1717 | |
| 1718 | =item Invalid separator character %s in attribute list |
| 1719 | |
| 1720 | (F) Something other than a comma or whitespace was seen between the |
| 1721 | elements of an attribute list. If the previous attribute |
| 1722 | had a parenthesised parameter list, perhaps that list was terminated |
| 1723 | too soon. See L<attributes>. |
| 1724 | |
| 1725 | =item Invalid type in pack: '%s' |
| 1726 | |
| 1727 | (F) The given character is not a valid pack type. See L<perlfunc/pack>. |
| 1728 | (W) The given character is not a valid pack type but used to be silently |
| 1729 | ignored. |
| 1730 | |
| 1731 | =item Invalid type in unpack: '%s' |
| 1732 | |
| 1733 | (F) The given character is not a valid unpack type. See L<perlfunc/unpack>. |
| 1734 | (W) The given character is not a valid unpack type but used to be silently |
| 1735 | ignored. |
| 1736 | |
| 1737 | =item ioctl is not implemented |
| 1738 | |
| 1739 | (F) Your machine apparently doesn't implement ioctl(), which is pretty |
| 1740 | strange for a machine that supports C. |
| 1741 | |
| 1742 | =item junk on end of regexp |
| 1743 | |
| 1744 | (P) The regular expression parser is confused. |
| 1745 | |
| 1746 | =item Label not found for "last %s" |
| 1747 | |
| 1748 | (F) You named a loop to break out of, but you're not currently in a |
| 1749 | loop of that name, not even if you count where you were called from. |
| 1750 | See L<perlfunc/last>. |
| 1751 | |
| 1752 | =item Label not found for "next %s" |
| 1753 | |
| 1754 | (F) You named a loop to continue, but you're not currently in a loop of |
| 1755 | that name, not even if you count where you were called from. See |
| 1756 | L<perlfunc/last>. |
| 1757 | |
| 1758 | =item Label not found for "redo %s" |
| 1759 | |
| 1760 | (F) You named a loop to restart, but you're not currently in a loop of |
| 1761 | that name, not even if you count where you were called from. See |
| 1762 | L<perlfunc/last>. |
| 1763 | |
| 1764 | =item leaving effective %s failed |
| 1765 | |
| 1766 | (F) While under the C<use filetest> pragma, switching the real and |
| 1767 | effective uids or gids failed. |
| 1768 | |
| 1769 | =item listen() on closed socket |
| 1770 | |
| 1771 | (W) You tried to do a listen on a closed socket. Did you forget to check |
| 1772 | the return value of your socket() call? See L<perlfunc/listen>. |
| 1773 | |
| 1774 | =item Lvalue subs returning %s not implemented yet |
| 1775 | |
| 1776 | (F) Due to limitations in the current implementation, array and hash |
| 1777 | values cannot be returned in subroutines used in lvalue context. |
| 1778 | See L<perlsub/"Lvalue subroutines">. |
| 1779 | |
| 1780 | =item Method for operation %s not found in package %s during blessing |
| 1781 | |
| 1782 | (F) An attempt was made to specify an entry in an overloading table that |
| 1783 | doesn't resolve to a valid subroutine. See L<overload>. |
| 1784 | |
| 1785 | =item Method %s not permitted |
| 1786 | |
| 1787 | See Server error. |
| 1788 | |
| 1789 | =item Might be a runaway multi-line %s string starting on line %d |
| 1790 | |
| 1791 | (S) An advisory indicating that the previous error may have been caused |
| 1792 | by a missing delimiter on a string or pattern, because it eventually |
| 1793 | ended earlier on the current line. |
| 1794 | |
| 1795 | =item Misplaced _ in number |
| 1796 | |
| 1797 | (W) An underline in a decimal constant wasn't on a 3-digit boundary. |
| 1798 | |
| 1799 | =item Missing $ on loop variable |
| 1800 | |
| 1801 | (F) Apparently you've been programming in B<csh> too much. Variables are always |
| 1802 | mentioned with the $ in Perl, unlike in the shells, where it can vary from |
| 1803 | one line to the next. |
| 1804 | |
| 1805 | =item Missing %sbrace%s on \N{} |
| 1806 | |
| 1807 | (F) Wrong syntax of character name literal C<\N{charname}> within |
| 1808 | double-quotish context. |
| 1809 | |
| 1810 | =item Missing comma after first argument to %s function |
| 1811 | |
| 1812 | (F) While certain functions allow you to specify a filehandle or an |
| 1813 | "indirect object" before the argument list, this ain't one of them. |
| 1814 | |
| 1815 | =item Missing command in piped open |
| 1816 | |
| 1817 | (W) You used the C<open(FH, "| command")> or C<open(FH, "command |")> |
| 1818 | construction, but the command was missing or blank. |
| 1819 | |
| 1820 | =item Missing operator before %s? |
| 1821 | |
| 1822 | (S) This is an educated guess made in conjunction with the message "%s |
| 1823 | found where operator expected". Often the missing operator is a comma. |
| 1824 | |
| 1825 | =item Missing right curly or square bracket |
| 1826 | |
| 1827 | (F) The lexer counted more opening curly or square brackets than |
| 1828 | closing ones. As a general rule, you'll find it's missing near the place |
| 1829 | you were last editing. |
| 1830 | |
| 1831 | =item Modification of a read-only value attempted |
| 1832 | |
| 1833 | (F) You tried, directly or indirectly, to change the value of a |
| 1834 | constant. You didn't, of course, try "2 = 1", because the compiler |
| 1835 | catches that. But an easy way to do the same thing is: |
| 1836 | |
| 1837 | sub mod { $_[0] = 1 } |
| 1838 | mod(2); |
| 1839 | |
| 1840 | Another way is to assign to a substr() that's off the end of the string. |
| 1841 | |
| 1842 | =item Modification of non-creatable array value attempted, subscript %d |
| 1843 | |
| 1844 | (F) You tried to make an array value spring into existence, and the |
| 1845 | subscript was probably negative, even counting from end of the array |
| 1846 | backwards. |
| 1847 | |
| 1848 | =item Modification of non-creatable hash value attempted, subscript "%s" |
| 1849 | |
| 1850 | (P) You tried to make a hash value spring into existence, and it couldn't |
| 1851 | be created for some peculiar reason. |
| 1852 | |
| 1853 | =item Module name must be constant |
| 1854 | |
| 1855 | (F) Only a bare module name is allowed as the first argument to a "use". |
| 1856 | |
| 1857 | =item msg%s not implemented |
| 1858 | |
| 1859 | (F) You don't have System V message IPC on your system. |
| 1860 | |
| 1861 | =item Multidimensional syntax %s not supported |
| 1862 | |
| 1863 | (W) Multidimensional arrays aren't written like C<$foo[1,2,3]>. They're written |
| 1864 | like C<$foo[1][2][3]>, as in C. |
| 1865 | |
| 1866 | =item Missing name in "my sub" |
| 1867 | |
| 1868 | (F) The reserved syntax for lexically scoped subroutines requires that they |
| 1869 | have a name with which they can be found. |
| 1870 | |
| 1871 | =item Name "%s::%s" used only once: possible typo |
| 1872 | |
| 1873 | (W) Typographical errors often show up as unique variable names. |
| 1874 | If you had a good reason for having a unique name, then just mention |
| 1875 | it again somehow to suppress the message. The C<our> declaration is |
| 1876 | provided for this purpose. |
| 1877 | |
| 1878 | =item Negative length |
| 1879 | |
| 1880 | (F) You tried to do a read/write/send/recv operation with a buffer length |
| 1881 | that is less than 0. This is difficult to imagine. |
| 1882 | |
| 1883 | =item nested *?+ in regexp |
| 1884 | |
| 1885 | (F) You can't quantify a quantifier without intervening parentheses. So |
| 1886 | things like ** or +* or ?* are illegal. |
| 1887 | |
| 1888 | Note, however, that the minimal matching quantifiers, C<*?>, C<+?>, and C<??> appear |
| 1889 | to be nested quantifiers, but aren't. See L<perlre>. |
| 1890 | |
| 1891 | =item No #! line |
| 1892 | |
| 1893 | (F) The setuid emulator requires that scripts have a well-formed #! line |
| 1894 | even on machines that don't support the #! construct. |
| 1895 | |
| 1896 | =item No %s allowed while running setuid |
| 1897 | |
| 1898 | (F) Certain operations are deemed to be too insecure for a setuid or setgid |
| 1899 | script to even be allowed to attempt. Generally speaking there will be |
| 1900 | another way to do what you want that is, if not secure, at least securable. |
| 1901 | See L<perlsec>. |
| 1902 | |
| 1903 | =item No B<-e> allowed in setuid scripts |
| 1904 | |
| 1905 | (F) A setuid script can't be specified by the user. |
| 1906 | |
| 1907 | =item No %s specified for -%c |
| 1908 | |
| 1909 | (F) The indicated command line switch needs a mandatory argument, but |
| 1910 | you haven't specified one. |
| 1911 | |
| 1912 | =item No comma allowed after %s |
| 1913 | |
| 1914 | (F) A list operator that has a filehandle or "indirect object" is not |
| 1915 | allowed to have a comma between that and the following arguments. |
| 1916 | Otherwise it'd be just another one of the arguments. |
| 1917 | |
| 1918 | One possible cause for this is that you expected to have imported a |
| 1919 | constant to your name space with B<use> or B<import> while no such |
| 1920 | importing took place, it may for example be that your operating system |
| 1921 | does not support that particular constant. Hopefully you did use an |
| 1922 | explicit import list for the constants you expect to see, please see |
| 1923 | L<perlfunc/use> and L<perlfunc/import>. While an explicit import list |
| 1924 | would probably have caught this error earlier it naturally does not |
| 1925 | remedy the fact that your operating system still does not support that |
| 1926 | constant. Maybe you have a typo in the constants of the symbol import |
| 1927 | list of B<use> or B<import> or in the constant name at the line where |
| 1928 | this error was triggered? |
| 1929 | |
| 1930 | =item No command into which to pipe on command line |
| 1931 | |
| 1932 | (F) An error peculiar to VMS. Perl handles its own command line redirection, |
| 1933 | and found a '|' at the end of the command line, so it doesn't know where you |
| 1934 | want to pipe the output from this command. |
| 1935 | |
| 1936 | =item No DB::DB routine defined |
| 1937 | |
| 1938 | (F) The currently executing code was compiled with the B<-d> switch, |
| 1939 | but for some reason the perl5db.pl file (or some facsimile thereof) |
| 1940 | didn't define a routine to be called at the beginning of each |
| 1941 | statement. Which is odd, because the file should have been required |
| 1942 | automatically, and should have blown up the require if it didn't parse |
| 1943 | right. |
| 1944 | |
| 1945 | =item No dbm on this machine |
| 1946 | |
| 1947 | (P) This is counted as an internal error, because every machine should |
| 1948 | supply dbm nowadays, because Perl comes with SDBM. See L<SDBM_File>. |
| 1949 | |
| 1950 | =item No DBsub routine |
| 1951 | |
| 1952 | (F) The currently executing code was compiled with the B<-d> switch, |
| 1953 | but for some reason the perl5db.pl file (or some facsimile thereof) |
| 1954 | didn't define a DB::sub routine to be called at the beginning of each |
| 1955 | ordinary subroutine call. |
| 1956 | |
| 1957 | =item No error file after 2E<gt> or 2E<gt>E<gt> on command line |
| 1958 | |
| 1959 | (F) An error peculiar to VMS. Perl handles its own command line redirection, |
| 1960 | and found a '2E<gt>' or a '2E<gt>E<gt>' on the command line, but can't find |
| 1961 | the name of the file to which to write data destined for stderr. |
| 1962 | |
| 1963 | =item No input file after E<lt> on command line |
| 1964 | |
| 1965 | (F) An error peculiar to VMS. Perl handles its own command line redirection, |
| 1966 | and found a 'E<lt>' on the command line, but can't find the name of the file |
| 1967 | from which to read data for stdin. |
| 1968 | |
| 1969 | =item No output file after E<gt> on command line |
| 1970 | |
| 1971 | (F) An error peculiar to VMS. Perl handles its own command line redirection, |
| 1972 | and found a lone 'E<gt>' at the end of the command line, so it doesn't know |
| 1973 | where you wanted to redirect stdout. |
| 1974 | |
| 1975 | =item No output file after E<gt> or E<gt>E<gt> on command line |
| 1976 | |
| 1977 | (F) An error peculiar to VMS. Perl handles its own command line redirection, |
| 1978 | and found a 'E<gt>' or a 'E<gt>E<gt>' on the command line, but can't find the |
| 1979 | name of the file to which to write data destined for stdout. |
| 1980 | |
| 1981 | =item No Perl script found in input |
| 1982 | |
| 1983 | (F) You called C<perl -x>, but no line was found in the file beginning |
| 1984 | with #! and containing the word "perl". |
| 1985 | |
| 1986 | =item No setregid available |
| 1987 | |
| 1988 | (F) Configure didn't find anything resembling the setregid() call for |
| 1989 | your system. |
| 1990 | |
| 1991 | =item No setreuid available |
| 1992 | |
| 1993 | (F) Configure didn't find anything resembling the setreuid() call for |
| 1994 | your system. |
| 1995 | |
| 1996 | =item No space allowed after -%c |
| 1997 | |
| 1998 | (F) The argument to the indicated command line switch must follow immediately |
| 1999 | after the switch, without intervening spaces. |
| 2000 | |
| 2001 | =item No such pseudo-hash field "%s" |
| 2002 | |
| 2003 | (F) You tried to access an array as a hash, but the field name used is |
| 2004 | not defined. The hash at index 0 should map all valid field names to |
| 2005 | array indices for that to work. |
| 2006 | |
| 2007 | =item No such pseudo-hash field "%s" in variable %s of type %s |
| 2008 | |
| 2009 | (F) You tried to access a field of a typed variable where the type |
| 2010 | does not know about the field name. The field names are looked up in |
| 2011 | the %FIELDS hash in the type package at compile time. The %FIELDS hash |
| 2012 | is usually set up with the 'fields' pragma. |
| 2013 | |
| 2014 | =item No such pipe open |
| 2015 | |
| 2016 | (P) An error peculiar to VMS. The internal routine my_pclose() tried to |
| 2017 | close a pipe which hadn't been opened. This should have been caught earlier as |
| 2018 | an attempt to close an unopened filehandle. |
| 2019 | |
| 2020 | =item No such signal: SIG%s |
| 2021 | |
| 2022 | (W) You specified a signal name as a subscript to %SIG that was not recognized. |
| 2023 | Say C<kill -l> in your shell to see the valid signal names on your system. |
| 2024 | |
| 2025 | =item no UTC offset information; assuming local time is UTC |
| 2026 | |
| 2027 | (S) A warning peculiar to VMS. Perl was unable to find the local |
| 2028 | timezone offset, so it's assuming that local system time is equivalent |
| 2029 | to UTC. If it's not, define the logical name F<SYS$TIMEZONE_DIFFERENTIAL> |
| 2030 | to translate to the number of seconds which need to be added to UTC to |
| 2031 | get local time. |
| 2032 | |
| 2033 | =item Not a CODE reference |
| 2034 | |
| 2035 | (F) Perl was trying to evaluate a reference to a code value (that is, a |
| 2036 | subroutine), but found a reference to something else instead. You can |
| 2037 | use the ref() function to find out what kind of ref it really was. |
| 2038 | See also L<perlref>. |
| 2039 | |
| 2040 | =item Not a format reference |
| 2041 | |
| 2042 | (F) I'm not sure how you managed to generate a reference to an anonymous |
| 2043 | format, but this indicates you did, and that it didn't exist. |
| 2044 | |
| 2045 | =item Not a GLOB reference |
| 2046 | |
| 2047 | (F) Perl was trying to evaluate a reference to a "typeglob" (that is, |
| 2048 | a symbol table entry that looks like C<*foo>), but found a reference to |
| 2049 | something else instead. You can use the ref() function to find out |
| 2050 | what kind of ref it really was. See L<perlref>. |
| 2051 | |
| 2052 | =item Not a HASH reference |
| 2053 | |
| 2054 | (F) Perl was trying to evaluate a reference to a hash value, but |
| 2055 | found a reference to something else instead. You can use the ref() |
| 2056 | function to find out what kind of ref it really was. See L<perlref>. |
| 2057 | |
| 2058 | =item Not a perl script |
| 2059 | |
| 2060 | (F) The setuid emulator requires that scripts have a well-formed #! line |
| 2061 | even on machines that don't support the #! construct. The line must |
| 2062 | mention perl. |
| 2063 | |
| 2064 | =item Not a SCALAR reference |
| 2065 | |
| 2066 | (F) Perl was trying to evaluate a reference to a scalar value, but |
| 2067 | found a reference to something else instead. You can use the ref() |
| 2068 | function to find out what kind of ref it really was. See L<perlref>. |
| 2069 | |
| 2070 | =item Not a subroutine reference |
| 2071 | |
| 2072 | (F) Perl was trying to evaluate a reference to a code value (that is, a |
| 2073 | subroutine), but found a reference to something else instead. You can |
| 2074 | use the ref() function to find out what kind of ref it really was. |
| 2075 | See also L<perlref>. |
| 2076 | |
| 2077 | =item Not a subroutine reference in overload table |
| 2078 | |
| 2079 | (F) An attempt was made to specify an entry in an overloading table that |
| 2080 | doesn't somehow point to a valid subroutine. See L<overload>. |
| 2081 | |
| 2082 | =item Not an ARRAY reference |
| 2083 | |
| 2084 | (F) Perl was trying to evaluate a reference to an array value, but |
| 2085 | found a reference to something else instead. You can use the ref() |
| 2086 | function to find out what kind of ref it really was. See L<perlref>. |
| 2087 | |
| 2088 | =item Not enough arguments for %s |
| 2089 | |
| 2090 | (F) The function requires more arguments than you specified. |
| 2091 | |
| 2092 | =item Not enough format arguments |
| 2093 | |
| 2094 | (W) A format specified more picture fields than the next line supplied. |
| 2095 | See L<perlform>. |
| 2096 | |
| 2097 | =item Null filename used |
| 2098 | |
| 2099 | (F) You can't require the null filename, especially because on many machines |
| 2100 | that means the current directory! See L<perlfunc/require>. |
| 2101 | |
| 2102 | =item Null picture in formline |
| 2103 | |
| 2104 | (F) The first argument to formline must be a valid format picture |
| 2105 | specification. It was found to be empty, which probably means you |
| 2106 | supplied it an uninitialized value. See L<perlform>. |
| 2107 | |
| 2108 | =item NULL OP IN RUN |
| 2109 | |
| 2110 | (P) Some internal routine called run() with a null opcode pointer. |
| 2111 | |
| 2112 | =item Null realloc |
| 2113 | |
| 2114 | (P) An attempt was made to realloc NULL. |
| 2115 | |
| 2116 | =item NULL regexp argument |
| 2117 | |
| 2118 | (P) The internal pattern matching routines blew it big time. |
| 2119 | |
| 2120 | =item NULL regexp parameter |
| 2121 | |
| 2122 | (P) The internal pattern matching routines are out of their gourd. |
| 2123 | |
| 2124 | =item Number too long |
| 2125 | |
| 2126 | (F) Perl limits the representation of decimal numbers in programs to about |
| 2127 | about 250 characters. You've exceeded that length. Future versions of |
| 2128 | Perl are likely to eliminate this arbitrary limitation. In the meantime, |
| 2129 | try using scientific notation (e.g. "1e6" instead of "1_000_000"). |
| 2130 | |
| 2131 | =item Octal number > 037777777777 non-portable |
| 2132 | |
| 2133 | (W) The octal number you specified is larger than 2**32-1 (4294967295) |
| 2134 | and therefore non-portable between systems. See L<perlport> for more |
| 2135 | on portability concerns. |
| 2136 | |
| 2137 | See also L<perlport> for writing portable code. |
| 2138 | |
| 2139 | =item Odd number of elements in hash assignment |
| 2140 | |
| 2141 | (S) You specified an odd number of elements to initialize a hash, which |
| 2142 | is odd, because hashes come in key/value pairs. |
| 2143 | |
| 2144 | =item Offset outside string |
| 2145 | |
| 2146 | (F) You tried to do a read/write/send/recv operation with an offset |
| 2147 | pointing outside the buffer. This is difficult to imagine. |
| 2148 | The sole exception to this is that C<sysread()>ing past the buffer |
| 2149 | will extend the buffer and zero pad the new area. |
| 2150 | |
| 2151 | =item oops: oopsAV |
| 2152 | |
| 2153 | (S) An internal warning that the grammar is screwed up. |
| 2154 | |
| 2155 | =item oops: oopsHV |
| 2156 | |
| 2157 | (S) An internal warning that the grammar is screwed up. |
| 2158 | |
| 2159 | =item Operation `%s': no method found, %s |
| 2160 | |
| 2161 | (F) An attempt was made to perform an overloaded operation for which |
| 2162 | no handler was defined. While some handlers can be autogenerated in |
| 2163 | terms of other handlers, there is no default handler for any |
| 2164 | operation, unless C<fallback> overloading key is specified to be |
| 2165 | true. See L<overload>. |
| 2166 | |
| 2167 | =item Operator or semicolon missing before %s |
| 2168 | |
| 2169 | (S) You used a variable or subroutine call where the parser was |
| 2170 | expecting an operator. The parser has assumed you really meant |
| 2171 | to use an operator, but this is highly likely to be incorrect. |
| 2172 | For example, if you say "*foo *foo" it will be interpreted as |
| 2173 | if you said "*foo * 'foo'". |
| 2174 | |
| 2175 | =item Out of memory! |
| 2176 | |
| 2177 | (X) The malloc() function returned 0, indicating there was insufficient |
| 2178 | remaining memory (or virtual memory) to satisfy the request. Perl |
| 2179 | has no option but to exit immediately. |
| 2180 | |
| 2181 | =item Out of memory for yacc stack |
| 2182 | |
| 2183 | (F) The yacc parser wanted to grow its stack so it could continue parsing, |
| 2184 | but realloc() wouldn't give it more memory, virtual or otherwise. |
| 2185 | |
| 2186 | =item Out of memory during request for %s |
| 2187 | |
| 2188 | (X|F) The malloc() function returned 0, indicating there was insufficient |
| 2189 | remaining memory (or virtual memory) to satisfy the request. |
| 2190 | |
| 2191 | The request was judged to be small, so the possibility to trap it |
| 2192 | depends on the way perl was compiled. By default it is not trappable. |
| 2193 | However, if compiled for this, Perl may use the contents of C<$^M> as |
| 2194 | an emergency pool after die()ing with this message. In this case the |
| 2195 | error is trappable I<once>. |
| 2196 | |
| 2197 | =item Out of memory during "large" request for %s |
| 2198 | |
| 2199 | (F) The malloc() function returned 0, indicating there was insufficient |
| 2200 | remaining memory (or virtual memory) to satisfy the request. However, |
| 2201 | the request was judged large enough (compile-time default is 64K), so |
| 2202 | a possibility to shut down by trapping this error is granted. |
| 2203 | |
| 2204 | =item Out of memory during ridiculously large request |
| 2205 | |
| 2206 | (F) You can't allocate more than 2^31+"small amount" bytes. This error |
| 2207 | is most likely to be caused by a typo in the Perl program. e.g., C<$arr[time]> |
| 2208 | instead of C<$arr[$time]>. |
| 2209 | |
| 2210 | =item page overflow |
| 2211 | |
| 2212 | (W) A single call to write() produced more lines than can fit on a page. |
| 2213 | See L<perlform>. |
| 2214 | |
| 2215 | =item panic: ck_grep |
| 2216 | |
| 2217 | (P) Failed an internal consistency check trying to compile a grep. |
| 2218 | |
| 2219 | =item panic: ck_split |
| 2220 | |
| 2221 | (P) Failed an internal consistency check trying to compile a split. |
| 2222 | |
| 2223 | =item panic: corrupt saved stack index |
| 2224 | |
| 2225 | (P) The savestack was requested to restore more localized values than there |
| 2226 | are in the savestack. |
| 2227 | |
| 2228 | =item panic: del_backref |
| 2229 | |
| 2230 | (P) Failed an internal consistency check while trying to reset a weak |
| 2231 | reference. |
| 2232 | |
| 2233 | =item panic: die %s |
| 2234 | |
| 2235 | (P) We popped the context stack to an eval context, and then discovered |
| 2236 | it wasn't an eval context. |
| 2237 | |
| 2238 | =item panic: do_match |
| 2239 | |
| 2240 | (P) The internal pp_match() routine was called with invalid operational data. |
| 2241 | |
| 2242 | =item panic: do_split |
| 2243 | |
| 2244 | (P) Something terrible went wrong in setting up for the split. |
| 2245 | |
| 2246 | =item panic: do_subst |
| 2247 | |
| 2248 | (P) The internal pp_subst() routine was called with invalid operational data. |
| 2249 | |
| 2250 | =item panic: do_trans |
| 2251 | |
| 2252 | (P) The internal do_trans() routine was called with invalid operational data. |
| 2253 | |
| 2254 | =item panic: frexp |
| 2255 | |
| 2256 | (P) The library function frexp() failed, making printf("%f") impossible. |
| 2257 | |
| 2258 | =item panic: goto |
| 2259 | |
| 2260 | (P) We popped the context stack to a context with the specified label, |
| 2261 | and then discovered it wasn't a context we know how to do a goto in. |
| 2262 | |
| 2263 | =item panic: INTERPCASEMOD |
| 2264 | |
| 2265 | (P) The lexer got into a bad state at a case modifier. |
| 2266 | |
| 2267 | =item panic: INTERPCONCAT |
| 2268 | |
| 2269 | (P) The lexer got into a bad state parsing a string with brackets. |
| 2270 | |
| 2271 | =item panic: kid popen errno read |
| 2272 | |
| 2273 | (F) forked child returned an incomprehensible message about its errno. |
| 2274 | |
| 2275 | =item panic: last |
| 2276 | |
| 2277 | (P) We popped the context stack to a block context, and then discovered |
| 2278 | it wasn't a block context. |
| 2279 | |
| 2280 | =item panic: leave_scope clearsv |
| 2281 | |
| 2282 | (P) A writable lexical variable became read-only somehow within the scope. |
| 2283 | |
| 2284 | =item panic: leave_scope inconsistency |
| 2285 | |
| 2286 | (P) The savestack probably got out of sync. At least, there was an |
| 2287 | invalid enum on the top of it. |
| 2288 | |
| 2289 | =item panic: malloc |
| 2290 | |
| 2291 | (P) Something requested a negative number of bytes of malloc. |
| 2292 | |
| 2293 | =item panic: magic_killbackrefs |
| 2294 | |
| 2295 | (P) Failed an internal consistency check while trying to reset all weak |
| 2296 | references to an object. |
| 2297 | |
| 2298 | =item panic: mapstart |
| 2299 | |
| 2300 | (P) The compiler is screwed up with respect to the map() function. |
| 2301 | |
| 2302 | =item panic: null array |
| 2303 | |
| 2304 | (P) One of the internal array routines was passed a null AV pointer. |
| 2305 | |
| 2306 | =item panic: pad_alloc |
| 2307 | |
| 2308 | (P) The compiler got confused about which scratch pad it was allocating |
| 2309 | and freeing temporaries and lexicals from. |
| 2310 | |
| 2311 | =item panic: pad_free curpad |
| 2312 | |
| 2313 | (P) The compiler got confused about which scratch pad it was allocating |
| 2314 | and freeing temporaries and lexicals from. |
| 2315 | |
| 2316 | =item panic: pad_free po |
| 2317 | |
| 2318 | (P) An invalid scratch pad offset was detected internally. |
| 2319 | |
| 2320 | =item panic: pad_reset curpad |
| 2321 | |
| 2322 | (P) The compiler got confused about which scratch pad it was allocating |
| 2323 | and freeing temporaries and lexicals from. |
| 2324 | |
| 2325 | =item panic: pad_sv po |
| 2326 | |
| 2327 | (P) An invalid scratch pad offset was detected internally. |
| 2328 | |
| 2329 | =item panic: pad_swipe curpad |
| 2330 | |
| 2331 | (P) The compiler got confused about which scratch pad it was allocating |
| 2332 | and freeing temporaries and lexicals from. |
| 2333 | |
| 2334 | =item panic: pad_swipe po |
| 2335 | |
| 2336 | (P) An invalid scratch pad offset was detected internally. |
| 2337 | |
| 2338 | =item panic: pp_iter |
| 2339 | |
| 2340 | (P) The foreach iterator got called in a non-loop context frame. |
| 2341 | |
| 2342 | =item panic: realloc |
| 2343 | |
| 2344 | (P) Something requested a negative number of bytes of realloc. |
| 2345 | |
| 2346 | =item panic: restartop |
| 2347 | |
| 2348 | (P) Some internal routine requested a goto (or something like it), and |
| 2349 | didn't supply the destination. |
| 2350 | |
| 2351 | =item panic: return |
| 2352 | |
| 2353 | (P) We popped the context stack to a subroutine or eval context, and |
| 2354 | then discovered it wasn't a subroutine or eval context. |
| 2355 | |
| 2356 | =item panic: scan_num |
| 2357 | |
| 2358 | (P) scan_num() got called on something that wasn't a number. |
| 2359 | |
| 2360 | =item panic: sv_insert |
| 2361 | |
| 2362 | (P) The sv_insert() routine was told to remove more string than there |
| 2363 | was string. |
| 2364 | |
| 2365 | =item panic: top_env |
| 2366 | |
| 2367 | (P) The compiler attempted to do a goto, or something weird like that. |
| 2368 | |
| 2369 | =item panic: yylex |
| 2370 | |
| 2371 | (P) The lexer got into a bad state while processing a case modifier. |
| 2372 | |
| 2373 | =item panic: %s |
| 2374 | |
| 2375 | (P) An internal error. |
| 2376 | |
| 2377 | =item Parentheses missing around "%s" list |
| 2378 | |
| 2379 | (W) You said something like |
| 2380 | |
| 2381 | my $foo, $bar = @_; |
| 2382 | |
| 2383 | when you meant |
| 2384 | |
| 2385 | my ($foo, $bar) = @_; |
| 2386 | |
| 2387 | Remember that "my" and "local" bind closer than comma. |
| 2388 | |
| 2389 | =item Perl %3.3f required--this is only version %s, stopped |
| 2390 | |
| 2391 | (F) The module in question uses features of a version of Perl more recent |
| 2392 | than the currently running version. How long has it been since you upgraded, |
| 2393 | anyway? See L<perlfunc/require>. |
| 2394 | |
| 2395 | =item Permission denied |
| 2396 | |
| 2397 | (F) The setuid emulator in suidperl decided you were up to no good. |
| 2398 | |
| 2399 | =item pid %x not a child |
| 2400 | |
| 2401 | (W) A warning peculiar to VMS. Waitpid() was asked to wait for a process which |
| 2402 | isn't a subprocess of the current process. While this is fine from VMS' |
| 2403 | perspective, it's probably not what you intended. |
| 2404 | |
| 2405 | =item POSIX getpgrp can't take an argument |
| 2406 | |
| 2407 | (F) Your system has POSIX getpgrp(), which takes no argument, unlike |
| 2408 | the BSD version, which takes a pid. |
| 2409 | |
| 2410 | =item Possible Y2K bug: %s |
| 2411 | |
| 2412 | (W) You are concatenating the number 19 with another number, which |
| 2413 | could be a potential Year 2000 problem. |
| 2414 | |
| 2415 | =item Possible attempt to put comments in qw() list |
| 2416 | |
| 2417 | (W) qw() lists contain items separated by whitespace; as with literal |
| 2418 | strings, comment characters are not ignored, but are instead treated |
| 2419 | as literal data. (You may have used different delimiters than the |
| 2420 | parentheses shown here; braces are also frequently used.) |
| 2421 | |
| 2422 | You probably wrote something like this: |
| 2423 | |
| 2424 | @list = qw( |
| 2425 | a # a comment |
| 2426 | b # another comment |
| 2427 | ); |
| 2428 | |
| 2429 | when you should have written this: |
| 2430 | |
| 2431 | @list = qw( |
| 2432 | a |
| 2433 | b |
| 2434 | ); |
| 2435 | |
| 2436 | If you really want comments, build your list the |
| 2437 | old-fashioned way, with quotes and commas: |
| 2438 | |
| 2439 | @list = ( |
| 2440 | 'a', # a comment |
| 2441 | 'b', # another comment |
| 2442 | ); |
| 2443 | |
| 2444 | =item Possible attempt to separate words with commas |
| 2445 | |
| 2446 | (W) qw() lists contain items separated by whitespace; therefore commas |
| 2447 | aren't needed to separate the items. (You may have used different |
| 2448 | delimiters than the parentheses shown here; braces are also frequently |
| 2449 | used.) |
| 2450 | |
| 2451 | You probably wrote something like this: |
| 2452 | |
| 2453 | qw! a, b, c !; |
| 2454 | |
| 2455 | which puts literal commas into some of the list items. Write it without |
| 2456 | commas if you don't want them to appear in your data: |
| 2457 | |
| 2458 | qw! a b c !; |
| 2459 | |
| 2460 | =item Possible memory corruption: %s overflowed 3rd argument |
| 2461 | |
| 2462 | (F) An ioctl() or fcntl() returned more than Perl was bargaining for. |
| 2463 | Perl guesses a reasonable buffer size, but puts a sentinel byte at the |
| 2464 | end of the buffer just in case. This sentinel byte got clobbered, and |
| 2465 | Perl assumes that memory is now corrupted. See L<perlfunc/ioctl>. |
| 2466 | |
| 2467 | =item Precedence problem: open %s should be open(%s) |
| 2468 | |
| 2469 | (S) The old irregular construct |
| 2470 | |
| 2471 | open FOO || die; |
| 2472 | |
| 2473 | is now misinterpreted as |
| 2474 | |
| 2475 | open(FOO || die); |
| 2476 | |
| 2477 | because of the strict regularization of Perl 5's grammar into unary |
| 2478 | and list operators. (The old open was a little of both.) You must |
| 2479 | put parentheses around the filehandle, or use the new "or" operator |
| 2480 | instead of "||". |
| 2481 | |
| 2482 | =item Premature end of script headers |
| 2483 | |
| 2484 | See Server error. |
| 2485 | |
| 2486 | =item print() on closed filehandle %s |
| 2487 | |
| 2488 | (W) The filehandle you're printing on got itself closed sometime before now. |
| 2489 | Check your logic flow. |
| 2490 | |
| 2491 | =item printf() on closed filehandle %s |
| 2492 | |
| 2493 | (W) The filehandle you're writing to got itself closed sometime before now. |
| 2494 | Check your logic flow. |
| 2495 | |
| 2496 | =item Probable precedence problem on %s |
| 2497 | |
| 2498 | (W) The compiler found a bareword where it expected a conditional, |
| 2499 | which often indicates that an || or && was parsed as part of the |
| 2500 | last argument of the previous construct, for example: |
| 2501 | |
| 2502 | open FOO || die; |
| 2503 | |
| 2504 | =item Prototype mismatch: %s vs %s |
| 2505 | |
| 2506 | (S) The subroutine being declared or defined had previously been declared |
| 2507 | or defined with a different function prototype. |
| 2508 | |
| 2509 | =item Range iterator outside integer range |
| 2510 | |
| 2511 | (F) One (or both) of the numeric arguments to the range operator ".." |
| 2512 | are outside the range which can be represented by integers internally. |
| 2513 | One possible workaround is to force Perl to use magical string |
| 2514 | increment by prepending "0" to your numbers. |
| 2515 | |
| 2516 | =item readline() on closed filehandle %s |
| 2517 | |
| 2518 | (W) The filehandle you're reading from got itself closed sometime before now. |
| 2519 | Check your logic flow. |
| 2520 | |
| 2521 | =item realloc() of freed memory ignored |
| 2522 | |
| 2523 | (S) An internal routine called realloc() on something that had already |
| 2524 | been freed. |
| 2525 | |
| 2526 | =item Reallocation too large: %lx |
| 2527 | |
| 2528 | (F) You can't allocate more than 64K on an MS-DOS machine. |
| 2529 | |
| 2530 | =item Recompile perl with B<-D>DEBUGGING to use B<-D> switch |
| 2531 | |
| 2532 | (F) You can't use the B<-D> option unless the code to produce the |
| 2533 | desired output is compiled into Perl, which entails some overhead, |
| 2534 | which is why it's currently left out of your copy. |
| 2535 | |
| 2536 | =item Recursive inheritance detected in package '%s' |
| 2537 | |
| 2538 | (F) More than 100 levels of inheritance were used. Probably indicates |
| 2539 | an unintended loop in your inheritance hierarchy. |
| 2540 | |
| 2541 | =item Recursive inheritance detected while looking for method '%s' in package '%s' |
| 2542 | |
| 2543 | (F) More than 100 levels of inheritance were encountered while invoking a |
| 2544 | method. Probably indicates an unintended loop in your inheritance hierarchy. |
| 2545 | |
| 2546 | =item Reference found where even-sized list expected |
| 2547 | |
| 2548 | (W) You gave a single reference where Perl was expecting a list with |
| 2549 | an even number of elements (for assignment to a hash). This |
| 2550 | usually means that you used the anon hash constructor when you meant |
| 2551 | to use parens. In any case, a hash requires key/value B<pairs>. |
| 2552 | |
| 2553 | %hash = { one => 1, two => 2, }; # WRONG |
| 2554 | %hash = [ qw/ an anon array / ]; # WRONG |
| 2555 | %hash = ( one => 1, two => 2, ); # right |
| 2556 | %hash = qw( one 1 two 2 ); # also fine |
| 2557 | |
| 2558 | =item Reference is already weak |
| 2559 | |
| 2560 | (W) You have attempted to weaken a reference that is already weak. |
| 2561 | Doing so has no effect. |
| 2562 | |
| 2563 | =item Reference miscount in sv_replace() |
| 2564 | |
| 2565 | (W) The internal sv_replace() function was handed a new SV with a |
| 2566 | reference count of other than 1. |
| 2567 | |
| 2568 | =item regexp *+ operand could be empty |
| 2569 | |
| 2570 | (F) The part of the regexp subject to either the * or + quantifier |
| 2571 | could match an empty string. |
| 2572 | |
| 2573 | =item regexp memory corruption |
| 2574 | |
| 2575 | (P) The regular expression engine got confused by what the regular |
| 2576 | expression compiler gave it. |
| 2577 | |
| 2578 | =item regexp out of space |
| 2579 | |
| 2580 | (P) A "can't happen" error, because safemalloc() should have caught it earlier. |
| 2581 | |
| 2582 | =item Reversed %s= operator |
| 2583 | |
| 2584 | (W) You wrote your assignment operator backwards. The = must always |
| 2585 | comes last, to avoid ambiguity with subsequent unary operators. |
| 2586 | |
| 2587 | =item Runaway format |
| 2588 | |
| 2589 | (F) Your format contained the ~~ repeat-until-blank sequence, but it |
| 2590 | produced 200 lines at once, and the 200th line looked exactly like the |
| 2591 | 199th line. Apparently you didn't arrange for the arguments to exhaust |
| 2592 | themselves, either by using ^ instead of @ (for scalar variables), or by |
| 2593 | shifting or popping (for array variables). See L<perlform>. |
| 2594 | |
| 2595 | =item Scalar value @%s[%s] better written as $%s[%s] |
| 2596 | |
| 2597 | (W) You've used an array slice (indicated by @) to select a single element of |
| 2598 | an array. Generally it's better to ask for a scalar value (indicated by $). |
| 2599 | The difference is that C<$foo[&bar]> always behaves like a scalar, both when |
| 2600 | assigning to it and when evaluating its argument, while C<@foo[&bar]> behaves |
| 2601 | like a list when you assign to it, and provides a list context to its |
| 2602 | subscript, which can do weird things if you're expecting only one subscript. |
| 2603 | |
| 2604 | On the other hand, if you were actually hoping to treat the array |
| 2605 | element as a list, you need to look into how references work, because |
| 2606 | Perl will not magically convert between scalars and lists for you. See |
| 2607 | L<perlref>. |
| 2608 | |
| 2609 | =item Scalar value @%s{%s} better written as $%s{%s} |
| 2610 | |
| 2611 | (W) You've used a hash slice (indicated by @) to select a single element of |
| 2612 | a hash. Generally it's better to ask for a scalar value (indicated by $). |
| 2613 | The difference is that C<$foo{&bar}> always behaves like a scalar, both when |
| 2614 | assigning to it and when evaluating its argument, while C<@foo{&bar}> behaves |
| 2615 | like a list when you assign to it, and provides a list context to its |
| 2616 | subscript, which can do weird things if you're expecting only one subscript. |
| 2617 | |
| 2618 | On the other hand, if you were actually hoping to treat the hash |
| 2619 | element as a list, you need to look into how references work, because |
| 2620 | Perl will not magically convert between scalars and lists for you. See |
| 2621 | L<perlref>. |
| 2622 | |
| 2623 | =item Script is not setuid/setgid in suidperl |
| 2624 | |
| 2625 | (F) Oddly, the suidperl program was invoked on a script without a setuid |
| 2626 | or setgid bit set. This doesn't make much sense. |
| 2627 | |
| 2628 | =item Search pattern not terminated |
| 2629 | |
| 2630 | (F) The lexer couldn't find the final delimiter of a // or m{} |
| 2631 | construct. Remember that bracketing delimiters count nesting level. |
| 2632 | Missing the leading C<$> from a variable C<$m> may cause this error. |
| 2633 | |
| 2634 | =item %sseek() on unopened file |
| 2635 | |
| 2636 | (W) You tried to use the seek() or sysseek() function on a filehandle that |
| 2637 | was either never opened or has since been closed. |
| 2638 | |
| 2639 | =item select not implemented |
| 2640 | |
| 2641 | (F) This machine doesn't implement the select() system call. |
| 2642 | |
| 2643 | =item sem%s not implemented |
| 2644 | |
| 2645 | (F) You don't have System V semaphore IPC on your system. |
| 2646 | |
| 2647 | =item semi-panic: attempt to dup freed string |
| 2648 | |
| 2649 | (S) The internal newSVsv() routine was called to duplicate a scalar |
| 2650 | that had previously been marked as free. |
| 2651 | |
| 2652 | =item Semicolon seems to be missing |
| 2653 | |
| 2654 | (W) A nearby syntax error was probably caused by a missing semicolon, |
| 2655 | or possibly some other missing operator, such as a comma. |
| 2656 | |
| 2657 | =item send() on closed socket |
| 2658 | |
| 2659 | (W) The socket you're sending to got itself closed sometime before now. |
| 2660 | Check your logic flow. |
| 2661 | |
| 2662 | =item Sequence (? incomplete |
| 2663 | |
| 2664 | (F) A regular expression ended with an incomplete extension (?. |
| 2665 | See L<perlre>. |
| 2666 | |
| 2667 | =item Sequence (?#... not terminated |
| 2668 | |
| 2669 | (F) A regular expression comment must be terminated by a closing |
| 2670 | parenthesis. Embedded parentheses aren't allowed. See L<perlre>. |
| 2671 | |
| 2672 | =item Sequence (?%s...) not implemented |
| 2673 | |
| 2674 | (F) A proposed regular expression extension has the character reserved |
| 2675 | but has not yet been written. See L<perlre>. |
| 2676 | |
| 2677 | =item Sequence (?%s...) not recognized |
| 2678 | |
| 2679 | (F) You used a regular expression extension that doesn't make sense. |
| 2680 | See L<perlre>. |
| 2681 | |
| 2682 | =item Server error |
| 2683 | |
| 2684 | This is the error message generally seen in a browser window when trying |
| 2685 | to run a CGI program (including SSI) over the web. The actual error |
| 2686 | text varies widely from server to server. The most frequently-seen |
| 2687 | variants are "500 Server error", "Method (something) not permitted", |
| 2688 | "Document contains no data", "Premature end of script headers", and |
| 2689 | "Did not produce a valid header". |
| 2690 | |
| 2691 | B<This is a CGI error, not a Perl error>. |
| 2692 | |
| 2693 | You need to make sure your script is executable, is accessible by the user |
| 2694 | CGI is running the script under (which is probably not the user account you |
| 2695 | tested it under), does not rely on any environment variables (like PATH) |
| 2696 | from the user it isn't running under, and isn't in a location where the CGI |
| 2697 | server can't find it, basically, more or less. Please see the following |
| 2698 | for more information: |
| 2699 | |
| 2700 | http://www.perl.com/CPAN/doc/FAQs/cgi/idiots-guide.html |
| 2701 | http://www.perl.com/CPAN/doc/FAQs/cgi/perl-cgi-faq.html |
| 2702 | ftp://rtfm.mit.edu/pub/usenet/news.answers/www/cgi-faq |
| 2703 | http://hoohoo.ncsa.uiuc.edu/cgi/interface.html |
| 2704 | http://www-genome.wi.mit.edu/WWW/faqs/www-security-faq.html |
| 2705 | |
| 2706 | You should also look at L<perlfaq9>. |
| 2707 | |
| 2708 | =item setegid() not implemented |
| 2709 | |
| 2710 | (F) You tried to assign to C<$)>, and your operating system doesn't support |
| 2711 | the setegid() system call (or equivalent), or at least Configure didn't |
| 2712 | think so. |
| 2713 | |
| 2714 | =item seteuid() not implemented |
| 2715 | |
| 2716 | (F) You tried to assign to C<$E<gt>>, and your operating system doesn't support |
| 2717 | the seteuid() system call (or equivalent), or at least Configure didn't |
| 2718 | think so. |
| 2719 | |
| 2720 | =item setpgrp can't take arguments |
| 2721 | |
| 2722 | (F) Your system has the setpgrp() from BSD 4.2, which takes no arguments, |
| 2723 | unlike POSIX setpgid(), which takes a process ID and process group ID. |
| 2724 | |
| 2725 | =item setrgid() not implemented |
| 2726 | |
| 2727 | (F) You tried to assign to C<$(>, and your operating system doesn't support |
| 2728 | the setrgid() system call (or equivalent), or at least Configure didn't |
| 2729 | think so. |
| 2730 | |
| 2731 | =item setruid() not implemented |
| 2732 | |
| 2733 | (F) You tried to assign to C<$E<lt>>, and your operating system doesn't support |
| 2734 | the setruid() system call (or equivalent), or at least Configure didn't |
| 2735 | think so. |
| 2736 | |
| 2737 | =item Setuid/gid script is writable by world |
| 2738 | |
| 2739 | (F) The setuid emulator won't run a script that is writable by the world, |
| 2740 | because the world might have written on it already. |
| 2741 | |
| 2742 | =item shm%s not implemented |
| 2743 | |
| 2744 | (F) You don't have System V shared memory IPC on your system. |
| 2745 | |
| 2746 | =item shutdown() on closed socket |
| 2747 | |
| 2748 | (W) You tried to do a shutdown on a closed socket. Seems a bit superfluous. |
| 2749 | |
| 2750 | =item SIG%s handler "%s" not defined |
| 2751 | |
| 2752 | (W) The signal handler named in %SIG doesn't, in fact, exist. Perhaps you |
| 2753 | put it into the wrong package? |
| 2754 | |
| 2755 | =item sort is now a reserved word |
| 2756 | |
| 2757 | (F) An ancient error message that almost nobody ever runs into anymore. |
| 2758 | But before sort was a keyword, people sometimes used it as a filehandle. |
| 2759 | |
| 2760 | =item Sort subroutine didn't return a numeric value |
| 2761 | |
| 2762 | (F) A sort comparison routine must return a number. You probably blew |
| 2763 | it by not using C<E<lt>=E<gt>> or C<cmp>, or by not using them correctly. |
| 2764 | See L<perlfunc/sort>. |
| 2765 | |
| 2766 | =item Sort subroutine didn't return single value |
| 2767 | |
| 2768 | (F) A sort comparison subroutine may not return a list value with more |
| 2769 | or less than one element. See L<perlfunc/sort>. |
| 2770 | |
| 2771 | =item Split loop |
| 2772 | |
| 2773 | (P) The split was looping infinitely. (Obviously, a split shouldn't iterate |
| 2774 | more times than there are characters of input, which is what happened.) |
| 2775 | See L<perlfunc/split>. |
| 2776 | |
| 2777 | =item Stat on unopened file E<lt>%sE<gt> |
| 2778 | |
| 2779 | (W) You tried to use the stat() function (or an equivalent file test) |
| 2780 | on a filehandle that was either never opened or has since been closed. |
| 2781 | |
| 2782 | =item Statement unlikely to be reached |
| 2783 | |
| 2784 | (W) You did an exec() with some statement after it other than a die(). |
| 2785 | This is almost always an error, because exec() never returns unless |
| 2786 | there was a failure. You probably wanted to use system() instead, |
| 2787 | which does return. To suppress this warning, put the exec() in a block |
| 2788 | by itself. |
| 2789 | |
| 2790 | =item Strange *+?{} on zero-length expression |
| 2791 | |
| 2792 | (W) You applied a regular expression quantifier in a place where it |
| 2793 | makes no sense, such as on a zero-width assertion. |
| 2794 | Try putting the quantifier inside the assertion instead. For example, |
| 2795 | the way to match "abc" provided that it is followed by three |
| 2796 | repetitions of "xyz" is C</abc(?=(?:xyz){3})/>, not C</abc(?=xyz){3}/>. |
| 2797 | |
| 2798 | =item Stub found while resolving method `%s' overloading `%s' in package `%s' |
| 2799 | |
| 2800 | (P) Overloading resolution over @ISA tree may be broken by importation stubs. |
| 2801 | Stubs should never be implicitely created, but explicit calls to C<can> |
| 2802 | may break this. |
| 2803 | |
| 2804 | =item Subroutine %s redefined |
| 2805 | |
| 2806 | (W) You redefined a subroutine. To suppress this warning, say |
| 2807 | |
| 2808 | { |
| 2809 | no warnings; |
| 2810 | eval "sub name { ... }"; |
| 2811 | } |
| 2812 | |
| 2813 | =item Substitution loop |
| 2814 | |
| 2815 | (P) The substitution was looping infinitely. (Obviously, a |
| 2816 | substitution shouldn't iterate more times than there are characters of |
| 2817 | input, which is what happened.) See the discussion of substitution in |
| 2818 | L<perlop/"Quote and Quote-like Operators">. |
| 2819 | |
| 2820 | =item Substitution pattern not terminated |
| 2821 | |
| 2822 | (F) The lexer couldn't find the interior delimiter of a s/// or s{}{} |
| 2823 | construct. Remember that bracketing delimiters count nesting level. |
| 2824 | Missing the leading C<$> from variable C<$s> may cause this error. |
| 2825 | |
| 2826 | =item Substitution replacement not terminated |
| 2827 | |
| 2828 | (F) The lexer couldn't find the final delimiter of a s/// or s{}{} |
| 2829 | construct. Remember that bracketing delimiters count nesting level. |
| 2830 | Missing the leading C<$> from variable C<$s> may cause this error. |
| 2831 | |
| 2832 | =item substr outside of string |
| 2833 | |
| 2834 | (S),(W) You tried to reference a substr() that pointed outside of a |
| 2835 | string. That is, the absolute value of the offset was larger than the |
| 2836 | length of the string. See L<perlfunc/substr>. This warning is |
| 2837 | mandatory if substr is used in an lvalue context (as the left hand side |
| 2838 | of an assignment or as a subroutine argument for example). |
| 2839 | |
| 2840 | =item suidperl is no longer needed since %s |
| 2841 | |
| 2842 | (F) Your Perl was compiled with B<-D>SETUID_SCRIPTS_ARE_SECURE_NOW, but a |
| 2843 | version of the setuid emulator somehow got run anyway. |
| 2844 | |
| 2845 | =item switching effective %s is not implemented |
| 2846 | |
| 2847 | (F) While under the C<use filetest> pragma, we cannot switch the |
| 2848 | real and effective uids or gids. |
| 2849 | |
| 2850 | =item syntax error |
| 2851 | |
| 2852 | (F) Probably means you had a syntax error. Common reasons include: |
| 2853 | |
| 2854 | A keyword is misspelled. |
| 2855 | A semicolon is missing. |
| 2856 | A comma is missing. |
| 2857 | An opening or closing parenthesis is missing. |
| 2858 | An opening or closing brace is missing. |
| 2859 | A closing quote is missing. |
| 2860 | |
| 2861 | Often there will be another error message associated with the syntax |
| 2862 | error giving more information. (Sometimes it helps to turn on B<-w>.) |
| 2863 | The error message itself often tells you where it was in the line when |
| 2864 | it decided to give up. Sometimes the actual error is several tokens |
| 2865 | before this, because Perl is good at understanding random input. |
| 2866 | Occasionally the line number may be misleading, and once in a blue moon |
| 2867 | the only way to figure out what's triggering the error is to call |
| 2868 | C<perl -c> repeatedly, chopping away half the program each time to see |
| 2869 | if the error went away. Sort of the cybernetic version of S<20 questions>. |
| 2870 | |
| 2871 | =item syntax error at line %d: `%s' unexpected |
| 2872 | |
| 2873 | (A) You've accidentally run your script through the Bourne shell |
| 2874 | instead of Perl. Check the #! line, or manually feed your script |
| 2875 | into Perl yourself. |
| 2876 | |
| 2877 | =item System V %s is not implemented on this machine |
| 2878 | |
| 2879 | (F) You tried to do something with a function beginning with "sem", |
| 2880 | "shm", or "msg" but that System V IPC is not implemented in your |
| 2881 | machine. In some machines the functionality can exist but be |
| 2882 | unconfigured. Consult your system support. |
| 2883 | |
| 2884 | =item syswrite() on closed filehandle |
| 2885 | |
| 2886 | (W) The filehandle you're writing to got itself closed sometime before now. |
| 2887 | Check your logic flow. |
| 2888 | |
| 2889 | =item Target of goto is too deeply nested |
| 2890 | |
| 2891 | (F) You tried to use C<goto> to reach a label that was too deeply |
| 2892 | nested for Perl to reach. Perl is doing you a favor by refusing. |
| 2893 | |
| 2894 | =item tell() on unopened file |
| 2895 | |
| 2896 | (W) You tried to use the tell() function on a filehandle that was either |
| 2897 | never opened or has since been closed. |
| 2898 | |
| 2899 | =item Test on unopened file E<lt>%sE<gt> |
| 2900 | |
| 2901 | (W) You tried to invoke a file test operator on a filehandle that isn't |
| 2902 | open. Check your logic. See also L<perlfunc/-X>. |
| 2903 | |
| 2904 | =item That use of $[ is unsupported |
| 2905 | |
| 2906 | (F) Assignment to C<$[> is now strictly circumscribed, and interpreted as |
| 2907 | a compiler directive. You may say only one of |
| 2908 | |
| 2909 | $[ = 0; |
| 2910 | $[ = 1; |
| 2911 | ... |
| 2912 | local $[ = 0; |
| 2913 | local $[ = 1; |
| 2914 | ... |
| 2915 | |
| 2916 | This is to prevent the problem of one module changing the array base |
| 2917 | out from under another module inadvertently. See L<perlvar/$[>. |
| 2918 | |
| 2919 | =item The %s function is unimplemented |
| 2920 | |
| 2921 | The function indicated isn't implemented on this architecture, according |
| 2922 | to the probings of Configure. |
| 2923 | |
| 2924 | =item The crypt() function is unimplemented due to excessive paranoia |
| 2925 | |
| 2926 | (F) Configure couldn't find the crypt() function on your machine, |
| 2927 | probably because your vendor didn't supply it, probably because they |
| 2928 | think the U.S. Government thinks it's a secret, or at least that they |
| 2929 | will continue to pretend that it is. And if you quote me on that, I |
| 2930 | will deny it. |
| 2931 | |
| 2932 | =item The stat preceding C<-l _> wasn't an lstat |
| 2933 | |
| 2934 | (F) It makes no sense to test the current stat buffer for symbolic linkhood |
| 2935 | if the last stat that wrote to the stat buffer already went past |
| 2936 | the symlink to get to the real file. Use an actual filename instead. |
| 2937 | |
| 2938 | =item This Perl can't reset CRTL environ elements (%s) |
| 2939 | |
| 2940 | =item This Perl can't set CRTL environ elements (%s=%s) |
| 2941 | |
| 2942 | (W) Warnings peculiar to VMS. You tried to change or delete an element |
| 2943 | of the CRTL's internal environ array, but your copy of Perl wasn't |
| 2944 | built with a CRTL that contained the setenv() function. You'll need to |
| 2945 | rebuild Perl with a CRTL that does, or redefine F<PERL_ENV_TABLES> (see |
| 2946 | L<perlvms>) so that the environ array isn't the target of the change to |
| 2947 | %ENV which produced the warning. |
| 2948 | |
| 2949 | =item times not implemented |
| 2950 | |
| 2951 | (F) Your version of the C library apparently doesn't do times(). I suspect |
| 2952 | you're not running on Unix. |
| 2953 | |
| 2954 | =item Too few args to syscall |
| 2955 | |
| 2956 | (F) There has to be at least one argument to syscall() to specify the |
| 2957 | system call to call, silly dilly. |
| 2958 | |
| 2959 | =item Too late for "B<-T>" option |
| 2960 | |
| 2961 | (X) The #! line (or local equivalent) in a Perl script contains the |
| 2962 | B<-T> option, but Perl was not invoked with B<-T> in its command line. |
| 2963 | This is an error because, by the time Perl discovers a B<-T> in a |
| 2964 | script, it's too late to properly taint everything from the environment. |
| 2965 | So Perl gives up. |
| 2966 | |
| 2967 | If the Perl script is being executed as a command using the #! |
| 2968 | mechanism (or its local equivalent), this error can usually be fixed |
| 2969 | by editing the #! line so that the B<-T> option is a part of Perl's |
| 2970 | first argument: e.g. change C<perl -n -T> to C<perl -T -n>. |
| 2971 | |
| 2972 | If the Perl script is being executed as C<perl scriptname>, then the |
| 2973 | B<-T> option must appear on the command line: C<perl -T scriptname>. |
| 2974 | |
| 2975 | =item Too late for "-%s" option |
| 2976 | |
| 2977 | (X) The #! line (or local equivalent) in a Perl script contains the |
| 2978 | B<-M> or B<-m> option. This is an error because B<-M> and B<-m> options |
| 2979 | are not intended for use inside scripts. Use the C<use> pragma instead. |
| 2980 | |
| 2981 | =item Too many ('s |
| 2982 | |
| 2983 | =item Too many )'s |
| 2984 | |
| 2985 | (A) You've accidentally run your script through B<csh> instead |
| 2986 | of Perl. Check the #! line, or manually feed your script into |
| 2987 | Perl yourself. |
| 2988 | |
| 2989 | =item Too many args to syscall |
| 2990 | |
| 2991 | (F) Perl supports a maximum of only 14 args to syscall(). |
| 2992 | |
| 2993 | =item Too many arguments for %s |
| 2994 | |
| 2995 | (F) The function requires fewer arguments than you specified. |
| 2996 | |
| 2997 | =item trailing \ in regexp |
| 2998 | |
| 2999 | (F) The regular expression ends with an unbackslashed backslash. Backslash |
| 3000 | it. See L<perlre>. |
| 3001 | |
| 3002 | =item Transliteration pattern not terminated |
| 3003 | |
| 3004 | (F) The lexer couldn't find the interior delimiter of a tr/// or tr[][] |
| 3005 | or y/// or y[][] construct. Missing the leading C<$> from variables |
| 3006 | C<$tr> or C<$y> may cause this error. |
| 3007 | |
| 3008 | =item Transliteration replacement not terminated |
| 3009 | |
| 3010 | (F) The lexer couldn't find the final delimiter of a tr/// or tr[][] |
| 3011 | construct. |
| 3012 | |
| 3013 | =item truncate not implemented |
| 3014 | |
| 3015 | (F) Your machine doesn't implement a file truncation mechanism that |
| 3016 | Configure knows about. |
| 3017 | |
| 3018 | =item Type of arg %d to %s must be %s (not %s) |
| 3019 | |
| 3020 | (F) This function requires the argument in that position to be of a |
| 3021 | certain type. Arrays must be @NAME or C<@{EXPR}>. Hashes must be |
| 3022 | %NAME or C<%{EXPR}>. No implicit dereferencing is allowed--use the |
| 3023 | {EXPR} forms as an explicit dereference. See L<perlref>. |
| 3024 | |
| 3025 | =item umask: argument is missing initial 0 |
| 3026 | |
| 3027 | (W) A umask of 222 is incorrect. It should be 0222, because octal |
| 3028 | literals always start with 0 in Perl, as in C. |
| 3029 | |
| 3030 | =item umask not implemented |
| 3031 | |
| 3032 | (F) Your machine doesn't implement the umask function and you tried |
| 3033 | to use it to restrict permissions for yourself (EXPR & 0700). |
| 3034 | |
| 3035 | =item Unable to create sub named "%s" |
| 3036 | |
| 3037 | (F) You attempted to create or access a subroutine with an illegal name. |
| 3038 | |
| 3039 | =item Unbalanced context: %d more PUSHes than POPs |
| 3040 | |
| 3041 | (W) The exit code detected an internal inconsistency in how many execution |
| 3042 | contexts were entered and left. |
| 3043 | |
| 3044 | =item Unbalanced saves: %d more saves than restores |
| 3045 | |
| 3046 | (W) The exit code detected an internal inconsistency in how many |
| 3047 | values were temporarily localized. |
| 3048 | |
| 3049 | =item Unbalanced scopes: %d more ENTERs than LEAVEs |
| 3050 | |
| 3051 | (W) The exit code detected an internal inconsistency in how many blocks |
| 3052 | were entered and left. |
| 3053 | |
| 3054 | =item Unbalanced tmps: %d more allocs than frees |
| 3055 | |
| 3056 | (W) The exit code detected an internal inconsistency in how many mortal |
| 3057 | scalars were allocated and freed. |
| 3058 | |
| 3059 | =item Undefined format "%s" called |
| 3060 | |
| 3061 | (F) The format indicated doesn't seem to exist. Perhaps it's really in |
| 3062 | another package? See L<perlform>. |
| 3063 | |
| 3064 | =item Undefined sort subroutine "%s" called |
| 3065 | |
| 3066 | (F) The sort comparison routine specified doesn't seem to exist. Perhaps |
| 3067 | it's in a different package? See L<perlfunc/sort>. |
| 3068 | |
| 3069 | =item Undefined subroutine &%s called |
| 3070 | |
| 3071 | (F) The subroutine indicated hasn't been defined, or if it was, it |
| 3072 | has since been undefined. |
| 3073 | |
| 3074 | =item Undefined subroutine called |
| 3075 | |
| 3076 | (F) The anonymous subroutine you're trying to call hasn't been defined, |
| 3077 | or if it was, it has since been undefined. |
| 3078 | |
| 3079 | =item Undefined subroutine in sort |
| 3080 | |
| 3081 | (F) The sort comparison routine specified is declared but doesn't seem to |
| 3082 | have been defined yet. See L<perlfunc/sort>. |
| 3083 | |
| 3084 | =item Undefined top format "%s" called |
| 3085 | |
| 3086 | (F) The format indicated doesn't seem to exist. Perhaps it's really in |
| 3087 | another package? See L<perlform>. |
| 3088 | |
| 3089 | =item Undefined value assigned to typeglob |
| 3090 | |
| 3091 | (W) An undefined value was assigned to a typeglob, a la C<*foo = undef>. |
| 3092 | This does nothing. It's possible that you really mean C<undef *foo>. |
| 3093 | |
| 3094 | =item unexec of %s into %s failed! |
| 3095 | |
| 3096 | (F) The unexec() routine failed for some reason. See your local FSF |
| 3097 | representative, who probably put it there in the first place. |
| 3098 | |
| 3099 | =item Unknown BYTEORDER |
| 3100 | |
| 3101 | (F) There are no byte-swapping functions for a machine with this byte order. |
| 3102 | |
| 3103 | =item Unknown open() mode '%s' |
| 3104 | |
| 3105 | (F) The second argument of 3-argument open() is not among the list |
| 3106 | of valid modes: C<L<lt>>, C<L<gt>>, C<E<gt>E<gt>>, C<+L<lt>>, |
| 3107 | C<+L<gt>>, C<+E<gt>E<gt>>, C<-|>, C<|->. |
| 3108 | |
| 3109 | =item Unknown process %x sent message to prime_env_iter: %s |
| 3110 | |
| 3111 | (P) An error peculiar to VMS. Perl was reading values for %ENV before |
| 3112 | iterating over it, and someone else stuck a message in the stream of |
| 3113 | data Perl expected. Someone's very confused, or perhaps trying to |
| 3114 | subvert Perl's population of %ENV for nefarious purposes. |
| 3115 | |
| 3116 | =item unmatched () in regexp |
| 3117 | |
| 3118 | (F) Unbackslashed parentheses must always be balanced in regular |
| 3119 | expressions. If you're a vi user, the % key is valuable for finding |
| 3120 | the matching parenthesis. See L<perlre>. |
| 3121 | |
| 3122 | =item Unmatched right %s bracket |
| 3123 | |
| 3124 | (F) The lexer counted more closing curly or square brackets than |
| 3125 | opening ones, so you're probably missing a matching opening bracket. |
| 3126 | As a general rule, you'll find the missing one (so to speak) near the |
| 3127 | place you were last editing. |
| 3128 | |
| 3129 | =item unmatched [] in regexp |
| 3130 | |
| 3131 | (F) The brackets around a character class must match. If you wish to |
| 3132 | include a closing bracket in a character class, backslash it or put it first. |
| 3133 | See L<perlre>. |
| 3134 | |
| 3135 | =item Unquoted string "%s" may clash with future reserved word |
| 3136 | |
| 3137 | (W) You used a bareword that might someday be claimed as a reserved word. |
| 3138 | It's best to put such a word in quotes, or capitalize it somehow, or insert |
| 3139 | an underbar into it. You might also declare it as a subroutine. |
| 3140 | |
| 3141 | =item Unrecognized character %s |
| 3142 | |
| 3143 | (F) The Perl parser has no idea what to do with the specified character |
| 3144 | in your Perl script (or eval). Perhaps you tried to run a compressed |
| 3145 | script, a binary program, or a directory as a Perl program. |
| 3146 | |
| 3147 | =item Unrecognized escape \\%c passed through |
| 3148 | |
| 3149 | (W) You used a backslash-character combination which is not recognized |
| 3150 | by Perl. |
| 3151 | |
| 3152 | =item Unrecognized signal name "%s" |
| 3153 | |
| 3154 | (F) You specified a signal name to the kill() function that was not recognized. |
| 3155 | Say C<kill -l> in your shell to see the valid signal names on your system. |
| 3156 | |
| 3157 | =item Unrecognized switch: -%s (-h will show valid options) |
| 3158 | |
| 3159 | (F) You specified an illegal option to Perl. Don't do that. |
| 3160 | (If you think you didn't do that, check the #! line to see if it's |
| 3161 | supplying the bad switch on your behalf.) |
| 3162 | |
| 3163 | =item Unsuccessful %s on filename containing newline |
| 3164 | |
| 3165 | (W) A file operation was attempted on a filename, and that operation |
| 3166 | failed, PROBABLY because the filename contained a newline, PROBABLY |
| 3167 | because you forgot to chop() or chomp() it off. See L<perlfunc/chomp>. |
| 3168 | |
| 3169 | =item Unsupported directory function "%s" called |
| 3170 | |
| 3171 | (F) Your machine doesn't support opendir() and readdir(). |
| 3172 | |
| 3173 | =item Unsupported function fork |
| 3174 | |
| 3175 | (F) Your version of executable does not support forking. |
| 3176 | |
| 3177 | Note that under some systems, like OS/2, there may be different flavors of |
| 3178 | Perl executables, some of which may support fork, some not. Try changing |
| 3179 | the name you call Perl by to C<perl_>, C<perl__>, and so on. |
| 3180 | |
| 3181 | =item Unsupported function %s |
| 3182 | |
| 3183 | (F) This machine doesn't implement the indicated function, apparently. |
| 3184 | At least, Configure doesn't think so. |
| 3185 | |
| 3186 | =item Unsupported socket function "%s" called |
| 3187 | |
| 3188 | (F) Your machine doesn't support the Berkeley socket mechanism, or at |
| 3189 | least that's what Configure thought. |
| 3190 | |
| 3191 | =item Unterminated E<lt>E<gt> operator |
| 3192 | |
| 3193 | (F) The lexer saw a left angle bracket in a place where it was expecting |
| 3194 | a term, so it's looking for the corresponding right angle bracket, and not |
| 3195 | finding it. Chances are you left some needed parentheses out earlier in |
| 3196 | the line, and you really meant a "less than". |
| 3197 | |
| 3198 | =item Unterminated attribute parameter in attribute list |
| 3199 | |
| 3200 | (F) The lexer saw an opening (left) parenthesis character while parsing an |
| 3201 | attribute list, but the matching closing (right) parenthesis |
| 3202 | character was not found. You may need to add (or remove) a backslash |
| 3203 | character to get your parentheses to balance. See L<attributes>. |
| 3204 | |
| 3205 | =item Unterminated attribute list |
| 3206 | |
| 3207 | (F) The lexer found something other than a simple identifier at the start |
| 3208 | of an attribute, and it wasn't a semicolon or the start of a |
| 3209 | block. Perhaps you terminated the parameter list of the previous attribute |
| 3210 | too soon. See L<attributes>. |
| 3211 | |
| 3212 | =item Use of $# is deprecated |
| 3213 | |
| 3214 | (D) This was an ill-advised attempt to emulate a poorly defined B<awk> feature. |
| 3215 | Use an explicit printf() or sprintf() instead. |
| 3216 | |
| 3217 | =item Use of $* is deprecated |
| 3218 | |
| 3219 | (D) This variable magically turned on multi-line pattern matching, both for |
| 3220 | you and for any luckless subroutine that you happen to call. You should |
| 3221 | use the new C<//m> and C<//s> modifiers now to do that without the dangerous |
| 3222 | action-at-a-distance effects of C<$*>. |
| 3223 | |
| 3224 | =item Use of %s in printf format not supported |
| 3225 | |
| 3226 | (F) You attempted to use a feature of printf that is accessible from |
| 3227 | only C. This usually means there's a better way to do it in Perl. |
| 3228 | |
| 3229 | =item Use of bare E<lt>E<lt> to mean E<lt>E<lt>"" is deprecated |
| 3230 | |
| 3231 | (D) You are now encouraged to use the explicitly quoted form if you |
| 3232 | wish to use an empty line as the terminator of the here-document. |
| 3233 | |
| 3234 | =item Use of implicit split to @_ is deprecated |
| 3235 | |
| 3236 | (D) It makes a lot of work for the compiler when you clobber a |
| 3237 | subroutine's argument list, so it's better if you assign the results of |
| 3238 | a split() explicitly to an array (or list). |
| 3239 | |
| 3240 | =item Use of inherited AUTOLOAD for non-method %s() is deprecated |
| 3241 | |
| 3242 | (D) As an (ahem) accidental feature, C<AUTOLOAD> subroutines are looked |
| 3243 | up as methods (using the C<@ISA> hierarchy) even when the subroutines to |
| 3244 | be autoloaded were called as plain functions (e.g. C<Foo::bar()>), not |
| 3245 | as methods (e.g. C<Foo-E<gt>bar()> or C<$obj-E<gt>bar()>). |
| 3246 | |
| 3247 | This bug will be rectified in Perl 5.005, which will use method lookup |
| 3248 | only for methods' C<AUTOLOAD>s. However, there is a significant base |
| 3249 | of existing code that may be using the old behavior. So, as an |
| 3250 | interim step, Perl 5.004 issues an optional warning when non-methods |
| 3251 | use inherited C<AUTOLOAD>s. |
| 3252 | |
| 3253 | The simple rule is: Inheritance will not work when autoloading |
| 3254 | non-methods. The simple fix for old code is: In any module that used to |
| 3255 | depend on inheriting C<AUTOLOAD> for non-methods from a base class named |
| 3256 | C<BaseClass>, execute C<*AUTOLOAD = \&BaseClass::AUTOLOAD> during startup. |
| 3257 | |
| 3258 | In code that currently says C<use AutoLoader; @ISA = qw(AutoLoader);> you |
| 3259 | should remove AutoLoader from @ISA and change C<use AutoLoader;> to |
| 3260 | C<use AutoLoader 'AUTOLOAD';>. |
| 3261 | |
| 3262 | =item Use of reserved word "%s" is deprecated |
| 3263 | |
| 3264 | (D) The indicated bareword is a reserved word. Future versions of perl |
| 3265 | may use it as a keyword, so you're better off either explicitly quoting |
| 3266 | the word in a manner appropriate for its context of use, or using a |
| 3267 | different name altogether. The warning can be suppressed for subroutine |
| 3268 | names by either adding a C<&> prefix, or using a package qualifier, |
| 3269 | e.g. C<&our()>, or C<Foo::our()>. |
| 3270 | |
| 3271 | =item Use of %s is deprecated |
| 3272 | |
| 3273 | (D) The construct indicated is no longer recommended for use, generally |
| 3274 | because there's a better way to do it, and also because the old way has |
| 3275 | bad side effects. |
| 3276 | |
| 3277 | =item Use of uninitialized value%s |
| 3278 | |
| 3279 | (W) An undefined value was used as if it were already defined. It was |
| 3280 | interpreted as a "" or a 0, but maybe it was a mistake. To suppress this |
| 3281 | warning assign a defined value to your variables. |
| 3282 | |
| 3283 | =item Useless use of "re" pragma |
| 3284 | |
| 3285 | (W) You did C<use re;> without any arguments. That isn't very useful. |
| 3286 | |
| 3287 | =item Useless use of %s in void context |
| 3288 | |
| 3289 | (W) You did something without a side effect in a context that does nothing |
| 3290 | with the return value, such as a statement that doesn't return a value |
| 3291 | from a block, or the left side of a scalar comma operator. Very often |
| 3292 | this points not to stupidity on your part, but a failure of Perl to parse |
| 3293 | your program the way you thought it would. For example, you'd get this |
| 3294 | if you mixed up your C precedence with Python precedence and said |
| 3295 | |
| 3296 | $one, $two = 1, 2; |
| 3297 | |
| 3298 | when you meant to say |
| 3299 | |
| 3300 | ($one, $two) = (1, 2); |
| 3301 | |
| 3302 | Another common error is to use ordinary parentheses to construct a list |
| 3303 | reference when you should be using square or curly brackets, for |
| 3304 | example, if you say |
| 3305 | |
| 3306 | $array = (1,2); |
| 3307 | |
| 3308 | when you should have said |
| 3309 | |
| 3310 | $array = [1,2]; |
| 3311 | |
| 3312 | The square brackets explicitly turn a list value into a scalar value, |
| 3313 | while parentheses do not. So when a parenthesized list is evaluated in |
| 3314 | a scalar context, the comma is treated like C's comma operator, which |
| 3315 | throws away the left argument, which is not what you want. See |
| 3316 | L<perlref> for more on this. |
| 3317 | |
| 3318 | =item untie attempted while %d inner references still exist |
| 3319 | |
| 3320 | (W) A copy of the object returned from C<tie> (or C<tied>) was still |
| 3321 | valid when C<untie> was called. |
| 3322 | |
| 3323 | =item Value of %s can be "0"; test with defined() |
| 3324 | |
| 3325 | (W) In a conditional expression, you used <HANDLE>, <*> (glob), C<each()>, |
| 3326 | or C<readdir()> as a boolean value. Each of these constructs can return a |
| 3327 | value of "0"; that would make the conditional expression false, which is |
| 3328 | probably not what you intended. When using these constructs in conditional |
| 3329 | expressions, test their values with the C<defined> operator. |
| 3330 | |
| 3331 | =item Value of CLI symbol "%s" too long |
| 3332 | |
| 3333 | (W) A warning peculiar to VMS. Perl tried to read the value of an %ENV |
| 3334 | element from a CLI symbol table, and found a resultant string longer |
| 3335 | than 1024 characters. The return value has been truncated to 1024 |
| 3336 | characters. |
| 3337 | |
| 3338 | =item Variable "%s" is not imported%s |
| 3339 | |
| 3340 | (F) While "use strict" in effect, you referred to a global variable |
| 3341 | that you apparently thought was imported from another module, because |
| 3342 | something else of the same name (usually a subroutine) is exported |
| 3343 | by that module. It usually means you put the wrong funny character |
| 3344 | on the front of your variable. |
| 3345 | |
| 3346 | =item Variable "%s" may be unavailable |
| 3347 | |
| 3348 | (W) An inner (nested) I<anonymous> subroutine is inside a I<named> |
| 3349 | subroutine, and outside that is another subroutine; and the anonymous |
| 3350 | (innermost) subroutine is referencing a lexical variable defined in |
| 3351 | the outermost subroutine. For example: |
| 3352 | |
| 3353 | sub outermost { my $a; sub middle { sub { $a } } } |
| 3354 | |
| 3355 | If the anonymous subroutine is called or referenced (directly or |
| 3356 | indirectly) from the outermost subroutine, it will share the variable |
| 3357 | as you would expect. But if the anonymous subroutine is called or |
| 3358 | referenced when the outermost subroutine is not active, it will see |
| 3359 | the value of the shared variable as it was before and during the |
| 3360 | *first* call to the outermost subroutine, which is probably not what |
| 3361 | you want. |
| 3362 | |
| 3363 | In these circumstances, it is usually best to make the middle |
| 3364 | subroutine anonymous, using the C<sub {}> syntax. Perl has specific |
| 3365 | support for shared variables in nested anonymous subroutines; a named |
| 3366 | subroutine in between interferes with this feature. |
| 3367 | |
| 3368 | =item Variable "%s" will not stay shared |
| 3369 | |
| 3370 | (W) An inner (nested) I<named> subroutine is referencing a lexical |
| 3371 | variable defined in an outer subroutine. |
| 3372 | |
| 3373 | When the inner subroutine is called, it will probably see the value of |
| 3374 | the outer subroutine's variable as it was before and during the |
| 3375 | *first* call to the outer subroutine; in this case, after the first |
| 3376 | call to the outer subroutine is complete, the inner and outer |
| 3377 | subroutines will no longer share a common value for the variable. In |
| 3378 | other words, the variable will no longer be shared. |
| 3379 | |
| 3380 | Furthermore, if the outer subroutine is anonymous and references a |
| 3381 | lexical variable outside itself, then the outer and inner subroutines |
| 3382 | will I<never> share the given variable. |
| 3383 | |
| 3384 | This problem can usually be solved by making the inner subroutine |
| 3385 | anonymous, using the C<sub {}> syntax. When inner anonymous subs that |
| 3386 | reference variables in outer subroutines are called or referenced, |
| 3387 | they are automatically rebound to the current values of such |
| 3388 | variables. |
| 3389 | |
| 3390 | =item Variable syntax |
| 3391 | |
| 3392 | (A) You've accidentally run your script through B<csh> instead |
| 3393 | of Perl. Check the #! line, or manually feed your script into |
| 3394 | Perl yourself. |
| 3395 | |
| 3396 | =item Version number must be a constant number |
| 3397 | |
| 3398 | (P) The attempt to translate a C<use Module n.n LIST> statement into |
| 3399 | its equivalent C<BEGIN> block found an internal inconsistency with |
| 3400 | the version number. |
| 3401 | |
| 3402 | =item perl: warning: Setting locale failed. |
| 3403 | |
| 3404 | (S) The whole warning message will look something like: |
| 3405 | |
| 3406 | perl: warning: Setting locale failed. |
| 3407 | perl: warning: Please check that your locale settings: |
| 3408 | LC_ALL = "En_US", |
| 3409 | LANG = (unset) |
| 3410 | are supported and installed on your system. |
| 3411 | perl: warning: Falling back to the standard locale ("C"). |
| 3412 | |
| 3413 | Exactly what were the failed locale settings varies. In the above the |
| 3414 | settings were that the LC_ALL was "En_US" and the LANG had no value. |
| 3415 | This error means that Perl detected that you and/or your system |
| 3416 | administrator have set up the so-called variable system but Perl could |
| 3417 | not use those settings. This was not dead serious, fortunately: there |
| 3418 | is a "default locale" called "C" that Perl can and will use, the |
| 3419 | script will be run. Before you really fix the problem, however, you |
| 3420 | will get the same error message each time you run Perl. How to really |
| 3421 | fix the problem can be found in L<perllocale> section B<LOCALE PROBLEMS>. |
| 3422 | |
| 3423 | =item Warning: something's wrong |
| 3424 | |
| 3425 | (W) You passed warn() an empty string (the equivalent of C<warn "">) or |
| 3426 | you called it with no args and C<$_> was empty. |
| 3427 | |
| 3428 | =item Warning: unable to close filehandle %s properly |
| 3429 | |
| 3430 | (S) The implicit close() done by an open() got an error indication on the |
| 3431 | close(). This usually indicates your file system ran out of disk space. |
| 3432 | |
| 3433 | =item Warning: Use of "%s" without parentheses is ambiguous |
| 3434 | |
| 3435 | (S) You wrote a unary operator followed by something that looks like a |
| 3436 | binary operator that could also have been interpreted as a term or |
| 3437 | unary operator. For instance, if you know that the rand function |
| 3438 | has a default argument of 1.0, and you write |
| 3439 | |
| 3440 | rand + 5; |
| 3441 | |
| 3442 | you may THINK you wrote the same thing as |
| 3443 | |
| 3444 | rand() + 5; |
| 3445 | |
| 3446 | but in actual fact, you got |
| 3447 | |
| 3448 | rand(+5); |
| 3449 | |
| 3450 | So put in parentheses to say what you really mean. |
| 3451 | |
| 3452 | =item write() on closed filehandle %s |
| 3453 | |
| 3454 | (W) The filehandle you're writing to got itself closed sometime before now. |
| 3455 | Check your logic flow. |
| 3456 | |
| 3457 | =item X outside of string |
| 3458 | |
| 3459 | (F) You had a pack template that specified a relative position before |
| 3460 | the beginning of the string being unpacked. See L<perlfunc/pack>. |
| 3461 | |
| 3462 | =item x outside of string |
| 3463 | |
| 3464 | (F) You had a pack template that specified a relative position after |
| 3465 | the end of the string being unpacked. See L<perlfunc/pack>. |
| 3466 | |
| 3467 | =item Xsub "%s" called in sort |
| 3468 | |
| 3469 | (F) The use of an external subroutine as a sort comparison is not yet supported. |
| 3470 | |
| 3471 | =item Xsub called in sort |
| 3472 | |
| 3473 | (F) The use of an external subroutine as a sort comparison is not yet supported. |
| 3474 | |
| 3475 | =item You can't use C<-l> on a filehandle |
| 3476 | |
| 3477 | (F) A filehandle represents an opened file, and when you opened the file it |
| 3478 | already went past any symlink you are presumably trying to look for. |
| 3479 | Use a filename instead. |
| 3480 | |
| 3481 | =item YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET! |
| 3482 | |
| 3483 | (F) And you probably never will, because you probably don't have the |
| 3484 | sources to your kernel, and your vendor probably doesn't give a rip |
| 3485 | about what you want. Your best bet is to use the wrapsuid script in |
| 3486 | the eg directory to put a setuid C wrapper around your script. |
| 3487 | |
| 3488 | =item You need to quote "%s" |
| 3489 | |
| 3490 | (W) You assigned a bareword as a signal handler name. Unfortunately, you |
| 3491 | already have a subroutine of that name declared, which means that Perl 5 |
| 3492 | will try to call the subroutine when the assignment is executed, which is |
| 3493 | probably not what you want. (If it IS what you want, put an & in front.) |
| 3494 | |
| 3495 | =item %cetsockopt() on closed fd |
| 3496 | |
| 3497 | (W) You tried to get or set a socket option on a closed socket. |
| 3498 | Did you forget to check the return value of your socket() call? |
| 3499 | See L<perlfunc/getsockopt> and L<perlfunc/setsockopt>. |
| 3500 | |
| 3501 | =item \1 better written as $1 |
| 3502 | |
| 3503 | (W) Outside of patterns, backreferences live on as variables. The use |
| 3504 | of backslashes is grandfathered on the right-hand side of a |
| 3505 | substitution, but stylistically it's better to use the variable form |
| 3506 | because other Perl programmers will expect it, and it works better |
| 3507 | if there are more than 9 backreferences. |
| 3508 | |
| 3509 | =item '|' and 'E<lt>' may not both be specified on command line |
| 3510 | |
| 3511 | (F) An error peculiar to VMS. Perl does its own command line redirection, and |
| 3512 | found that STDIN was a pipe, and that you also tried to redirect STDIN using |
| 3513 | 'E<lt>'. Only one STDIN stream to a customer, please. |
| 3514 | |
| 3515 | =item '|' and 'E<gt>' may not both be specified on command line |
| 3516 | |
| 3517 | (F) An error peculiar to VMS. Perl does its own command line redirection, and |
| 3518 | thinks you tried to redirect stdout both to a file and into a pipe to another |
| 3519 | command. You need to choose one or the other, though nothing's stopping you |
| 3520 | from piping into a program or Perl script which 'splits' output into two |
| 3521 | streams, such as |
| 3522 | |
| 3523 | open(OUT,">$ARGV[0]") or die "Can't write to $ARGV[0]: $!"; |
| 3524 | while (<STDIN>) { |
| 3525 | print; |
| 3526 | print OUT; |
| 3527 | } |
| 3528 | close OUT; |
| 3529 | |
| 3530 | =item Got an error from DosAllocMem |
| 3531 | |
| 3532 | (P) An error peculiar to OS/2. Most probably you're using an obsolete |
| 3533 | version of Perl, and this should not happen anyway. |
| 3534 | |
| 3535 | =item Malformed PERLLIB_PREFIX |
| 3536 | |
| 3537 | (F) An error peculiar to OS/2. PERLLIB_PREFIX should be of the form |
| 3538 | |
| 3539 | prefix1;prefix2 |
| 3540 | |
| 3541 | or |
| 3542 | |
| 3543 | prefix1 prefix2 |
| 3544 | |
| 3545 | with nonempty prefix1 and prefix2. If C<prefix1> is indeed a prefix |
| 3546 | of a builtin library search path, prefix2 is substituted. The error |
| 3547 | may appear if components are not found, or are too long. See |
| 3548 | "PERLLIB_PREFIX" in F<README.os2>. |
| 3549 | |
| 3550 | =item PERL_SH_DIR too long |
| 3551 | |
| 3552 | (F) An error peculiar to OS/2. PERL_SH_DIR is the directory to find the |
| 3553 | C<sh>-shell in. See "PERL_SH_DIR" in F<README.os2>. |
| 3554 | |
| 3555 | =item Process terminated by SIG%s |
| 3556 | |
| 3557 | (W) This is a standard message issued by OS/2 applications, while *nix |
| 3558 | applications die in silence. It is considered a feature of the OS/2 |
| 3559 | port. One can easily disable this by appropriate sighandlers, see |
| 3560 | L<perlipc/"Signals">. See also "Process terminated by SIGTERM/SIGINT" |
| 3561 | in F<README.os2>. |
| 3562 | |
| 3563 | =back |
| 3564 | |