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1=head1 NAME
2
3perldiag - various Perl diagnostics
4
5=head1 DESCRIPTION
6
7These messages are classified as follows (listed in increasing order of
8desperation):
9
10 (W) A warning (optional).
11 (D) A deprecation (optional).
e476b1b5 12 (S) A severe warning (default).
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13 (F) A fatal error (trappable).
14 (P) An internal error you should never see (trappable).
54310121 15 (X) A very fatal error (nontrappable).
cb1a09d0 16 (A) An alien error message (not generated by Perl).
a0d0e21e 17
75b44862 18The majority of messages from the first three classifications above
64977eb6 19(W, D & S) can be controlled using the C<warnings> pragma.
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20
21If a message can be controlled by the C<warnings> pragma, its warning
22category is included with the classification letter in the description
23below.
24
25Optional warnings are enabled by using the C<warnings> pragma or the B<-w>
26and B<-W> switches. Warnings may be captured by setting C<$SIG{__WARN__}>
27to a reference to a routine that will be called on each warning instead
28of printing it. See L<perlvar>.
29
30Default warnings are always enabled unless they are explicitly disabled
31with the C<warnings> pragma or the B<-X> switch.
4438c4b7 32
748a9306 33Trappable errors may be trapped using the eval operator. See
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34L<perlfunc/eval>. In almost all cases, warnings may be selectively
35disabled or promoted to fatal errors using the C<warnings> pragma.
36See L<warnings>.
a0d0e21e 37
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38The messages are in alphabetical order, without regard to upper or
39lower-case. Some of these messages are generic. Spots that vary are
40denoted with a %s or other printf-style escape. These escapes are
41ignored by the alphabetical order, as are all characters other than
42letters. To look up your message, just ignore anything that is not a
43letter.
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44
45=over 4
46
6df41af2 47=item accept() on closed socket %s
33633739 48
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49(W closed) You tried to do an accept on a closed socket. Did you forget
50to check the return value of your socket() call? See
51L<perlfunc/accept>.
33633739 52
6df41af2 53=item Allocation too large: %lx
a0d0e21e 54
6df41af2 55(X) You can't allocate more than 64K on an MS-DOS machine.
a0d0e21e 56
f61d411c 57=item '!' allowed only after types %s
ef54e1a4 58
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59(F) The '!' is allowed in pack() and unpack() only after certain types.
60See L<perlfunc/pack>.
ef54e1a4 61
6df41af2 62=item Ambiguous call resolved as CORE::%s(), qualify as such or use &
43192e07 63
75b44862 64(W ambiguous) A subroutine you have declared has the same name as a Perl
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65keyword, and you have used the name without qualification for calling
66one or the other. Perl decided to call the builtin because the
67subroutine is not imported.
43192e07 68
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69To force interpretation as a subroutine call, either put an ampersand
70before the subroutine name, or qualify the name with its package.
71Alternatively, you can import the subroutine (or pretend that it's
72imported with the C<use subs> pragma).
43192e07 73
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74To silently interpret it as the Perl operator, use the C<CORE::> prefix
75on the operator (e.g. C<CORE::log($x)>) or by declaring the subroutine
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76to be an object method (see L<perlsub/"Subroutine Attributes"> or
77L<attributes>).
43192e07 78
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79=item Ambiguous range in transliteration operator
80
81(F) You wrote something like C<tr/a-z-0//> which doesn't mean anything at
82all. To include a C<-> character in a transliteration, put it either
83first or last. (In the past, C<tr/a-z-0//> was synonymous with
84C<tr/a-y//>, which was probably not what you would have expected.)
85
6df41af2 86=item Ambiguous use of %s resolved as %s
43192e07 87
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88(W ambiguous)(S) You said something that may not be interpreted the way
89you thought. Normally it's pretty easy to disambiguate it by supplying
90a missing quote, operator, parenthesis pair or declaration.
a0d0e21e 91
6df41af2 92=item '|' and '<' may not both be specified on command line
a0d0e21e 93
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94(F) An error peculiar to VMS. Perl does its own command line
95redirection, and found that STDIN was a pipe, and that you also tried to
96redirect STDIN using '<'. Only one STDIN stream to a customer, please.
c9f97d15 97
6df41af2 98=item '|' and '>' may not both be specified on command line
1028017a 99
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100(F) An error peculiar to VMS. Perl does its own command line
101redirection, and thinks you tried to redirect stdout both to a file and
102into a pipe to another command. You need to choose one or the other,
103though nothing's stopping you from piping into a program or Perl script
104which 'splits' output into two streams, such as
1028017a 105
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106 open(OUT,">$ARGV[0]") or die "Can't write to $ARGV[0]: $!";
107 while (<STDIN>) {
108 print;
109 print OUT;
110 }
111 close OUT;
c9f97d15 112
6df41af2 113=item Applying %s to %s will act on scalar(%s)
eb6e2d6f 114
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115(W misc) The pattern match (//), substitution (s///), and
116transliteration (tr///) operators work on scalar values. If you apply
117one of them to an array or a hash, it will convert the array or hash to
118a scalar value -- the length of an array, or the population info of a
119hash -- and then work on that scalar value. This is probably not what
120you meant to do. See L<perlfunc/grep> and L<perlfunc/map> for
121alternatives.
eb6e2d6f 122
6df41af2 123=item Args must match #! line
a0d0e21e 124
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125(F) The setuid emulator requires that the arguments Perl was invoked
126with match the arguments specified on the #! line. Since some systems
127impose a one-argument limit on the #! line, try combining switches;
128for example, turn C<-w -U> into C<-wU>.
a0d0e21e 129
6df41af2 130=item Arg too short for msgsnd
76cd736e 131
6df41af2 132(F) msgsnd() requires a string at least as long as sizeof(long).
76cd736e 133
8ea97a1e 134=item %s argument is not a HASH or ARRAY element
a0d0e21e 135
8ea97a1e 136(F) The argument to exists() must be a hash or array element, such as:
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137
138 $foo{$bar}
cb4f522a 139 $ref->{"susie"}[12]
a0d0e21e 140
8ea97a1e 141=item %s argument is not a HASH or ARRAY element or slice
5f05dabc 142
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143(F) The argument to delete() must be either a hash or array element,
144such as:
5f05dabc 145
146 $foo{$bar}
cb4f522a 147 $ref->{"susie"}[12]
5f05dabc 148
8ea97a1e 149or a hash or array slice, such as:
5f05dabc 150
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151 @foo[$bar, $baz, $xyzzy]
152 @{$ref->[12]}{"susie", "queue"}
5315574d 153
6df41af2 154=item %s argument is not a subroutine name
a0d0e21e 155
6df41af2 156(F) The argument to exists() for C<exists &sub> must be a subroutine
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157name, and not a subroutine call. C<exists &sub()> will generate this
158error.
a0d0e21e 159
f86702cc 160=item Argument "%s" isn't numeric%s
a0d0e21e 161
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162(W numeric) The indicated string was fed as an argument to an operator
163that expected a numeric value instead. If you're fortunate the message
164will identify which operator was so unfortunate.
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165
166=item Array @%s missing the @ in argument %d of %s()
167
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168(D deprecated) Really old Perl let you omit the @ on array names in some
169spots. This is now heavily deprecated.
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170
171=item assertion botched: %s
172
173(P) The malloc package that comes with Perl had an internal failure.
174
175=item Assertion failed: file "%s"
176
177(P) A general assertion failed. The file in question must be examined.
178
179=item Assignment to both a list and a scalar
180
181(F) If you assign to a conditional operator, the 2nd and 3rd arguments
182must either both be scalars or both be lists. Otherwise Perl won't
183know which context to supply to the right side.
184
5243b939 185=item Negative offset to vec in lvalue context
fe58ced6 186
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187(F) When vec is called in an lvalue context, the second argument must be
188greater than or equal to zero.
fe58ced6 189
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190=item Attempt to bless into a reference
191
192(F) The CLASSNAME argument to the bless() operator is expected to be
193the name of the package to bless the resulting object into. You've
194supplied instead a reference to something: perhaps you wrote
195
196 bless $self, $proto;
197
198when you intended
199
200 bless $self, ref($proto) || $proto;
201
202If you actually want to bless into the stringified version
203of the reference supplied, you need to stringify it yourself, for
204example by:
205
206 bless $self, "$proto";
207
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208=item Attempt to free non-arena SV: 0x%lx
209
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210(P internal) All SV objects are supposed to be allocated from arenas
211that will be garbage collected on exit. An SV was discovered to be
212outside any of those arenas.
a0d0e21e 213
54310121 214=item Attempt to free nonexistent shared string
bbce6d69 215
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216(P internal) Perl maintains a reference counted internal table of
217strings to optimize the storage and access of hash keys and other
218strings. This indicates someone tried to decrement the reference count
219of a string that can no longer be found in the table.
bbce6d69 220
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221=item Attempt to free temp prematurely
222
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223(W debugging) Mortalized values are supposed to be freed by the
224free_tmps() routine. This indicates that something else is freeing the
225SV before the free_tmps() routine gets a chance, which means that the
226free_tmps() routine will be freeing an unreferenced scalar when it does
227try to free it.
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228
229=item Attempt to free unreferenced glob pointers
230
e476b1b5 231(P internal) The reference counts got screwed up on symbol aliases.
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232
233=item Attempt to free unreferenced scalar
234
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235(W internal) Perl went to decrement the reference count of a scalar to
236see if it would go to 0, and discovered that it had already gone to 0
237earlier, and should have been freed, and in fact, probably was freed.
238This could indicate that SvREFCNT_dec() was called too many times, or
239that SvREFCNT_inc() was called too few times, or that the SV was
240mortalized when it shouldn't have been, or that memory has been
241corrupted.
a0d0e21e 242
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243=item Attempt to join self
244
245(F) You tried to join a thread from within itself, which is an
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246impossible task. You may be joining the wrong thread, or you may need
247to move the join() to some other thread.
dcdda58d 248
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249=item Attempt to pack pointer to temporary value
250
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251(W pack) You tried to pass a temporary value (like the result of a
252function, or a computed expression) to the "p" pack() template. This
253means the result contains a pointer to a location that could become
254invalid anytime, even before the end of the current statement. Use
255literals or global values as arguments to the "p" pack() template to
256avoid this warning.
84902520 257
b7a902f4 258=item Attempt to use reference as lvalue in substr
259
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260(W substr) You supplied a reference as the first argument to substr()
261used as an lvalue, which is pretty strange. Perhaps you forgot to
262dereference it first. See L<perlfunc/substr>.
b7a902f4 263
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264=item Bad arg length for %s, is %d, should be %d
265
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266(F) You passed a buffer of the wrong size to one of msgctl(), semctl()
267or shmctl(). In C parlance, the correct sizes are, respectively,
5f05dabc 268S<sizeof(struct msqid_ds *)>, S<sizeof(struct semid_ds *)>, and
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269S<sizeof(struct shmid_ds *)>.
270
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271=item Bad evalled substitution pattern
272
273(F) You've used the /e switch to evaluate the replacement for a
274substitution, but perl found a syntax error in the code to evaluate,
275most likely an unexpected right brace '}'.
276
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277=item Bad filehandle: %s
278
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279(F) A symbol was passed to something wanting a filehandle, but the
280symbol has no filehandle associated with it. Perhaps you didn't do an
281open(), or did it in another package.
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282
283=item Bad free() ignored
284
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285(S malloc) An internal routine called free() on something that had never
286been malloc()ed in the first place. Mandatory, but can be disabled by
9ea8bc6d 287setting environment variable C<PERL_BADFREE> to 0.
33c8a3fe 288
9ea8bc6d 289This message can be seen quite often with DB_File on systems with "hard"
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290dynamic linking, like C<AIX> and C<OS/2>. It is a bug of C<Berkeley DB>
291which is left unnoticed if C<DB> uses I<forgiving> system malloc().
a0d0e21e 292
aa689395 293=item Bad hash
294
295(P) One of the internal hash routines was passed a null HV pointer.
296
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297=item Bad index while coercing array into hash
298
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299(F) The index looked up in the hash found as the 0'th element of a
300pseudo-hash is not legal. Index values must be at 1 or greater.
301See L<perlref>.
57079c46 302
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303=item Badly placed ()'s
304
305(A) You've accidentally run your script through B<csh> instead
306of Perl. Check the #! line, or manually feed your script into
307Perl yourself.
308
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309=item Bad name after %s::
310
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311(F) You started to name a symbol by using a package prefix, and then
312didn't finish the symbol. In particular, you can't interpolate outside
313of quotes, so
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314
315 $var = 'myvar';
316 $sym = mypack::$var;
317
318is not the same as
319
320 $var = 'myvar';
321 $sym = "mypack::$var";
322
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323=item Bad realloc() ignored
324
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325(S malloc) An internal routine called realloc() on something that had
326never been malloc()ed in the first place. Mandatory, but can be disabled
327by setting environment variable C<PERL_BADFREE> to 1.
4ad56ec9 328
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329=item Bad symbol for array
330
331(P) An internal request asked to add an array entry to something that
332wasn't a symbol table entry.
333
334=item Bad symbol for filehandle
335
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336(P) An internal request asked to add a filehandle entry to something
337that wasn't a symbol table entry.
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338
339=item Bad symbol for hash
340
341(P) An internal request asked to add a hash entry to something that
342wasn't a symbol table entry.
343
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344=item Bareword found in conditional
345
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346(W bareword) The compiler found a bareword where it expected a
347conditional, which often indicates that an || or && was parsed as part
348of the last argument of the previous construct, for example:
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349
350 open FOO || die;
351
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352It may also indicate a misspelled constant that has been interpreted as
353a bareword:
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354
355 use constant TYPO => 1;
356 if (TYOP) { print "foo" }
357
358The C<strict> pragma is useful in avoiding such errors.
359
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360=item Bareword "%s" not allowed while "strict subs" in use
361
362(F) With "strict subs" in use, a bareword is only allowed as a
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363subroutine identifier, in curly brackets or to the left of the "=>"
364symbol. Perhaps you need to predeclare a subroutine?
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365
366=item Bareword "%s" refers to nonexistent package
367
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368(W bareword) You used a qualified bareword of the form C<Foo::>, but the
369compiler saw no other uses of that namespace before that point. Perhaps
370you need to predeclare a package?
6df41af2 371
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372=item BEGIN failed--compilation aborted
373
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374(F) An untrapped exception was raised while executing a BEGIN
375subroutine. Compilation stops immediately and the interpreter is
376exited.
a0d0e21e 377
68dc0745 378=item BEGIN not safe after errors--compilation aborted
379
380(F) Perl found a C<BEGIN {}> subroutine (or a C<use> directive, which
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381implies a C<BEGIN {}>) after one or more compilation errors had already
382occurred. Since the intended environment for the C<BEGIN {}> could not
383be guaranteed (due to the errors), and since subsequent code likely
384depends on its correct operation, Perl just gave up.
68dc0745 385
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386=item \1 better written as $1
387
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388(W syntax) Outside of patterns, backreferences live on as variables.
389The use of backslashes is grandfathered on the right-hand side of a
390substitution, but stylistically it's better to use the variable form
391because other Perl programmers will expect it, and it works better if
392there are more than 9 backreferences.
6df41af2 393
252aa082
JH
394=item Binary number > 0b11111111111111111111111111111111 non-portable
395
e476b1b5 396(W portable) The binary number you specified is larger than 2**32-1
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397(4294967295) and therefore non-portable between systems. See
398L<perlport> for more on portability concerns.
252aa082 399
69282e91 400=item bind() on closed socket %s
a0d0e21e 401
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402(W closed) You tried to do a bind on a closed socket. Did you forget to
403check the return value of your socket() call? See L<perlfunc/bind>.
a0d0e21e 404
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405=item binmode() on closed filehandle %s
406
407(W unopened) You tried binmode() on a filehandle that was never opened.
408Check you control flow and number of arguments.
409
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410=item Bit vector size > 32 non-portable
411
e476b1b5 412(W portable) Using bit vector sizes larger than 32 is non-portable.
c5a0f51a 413
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414=item Bizarre copy of %s in %s
415
be771a83 416(P) Perl detected an attempt to copy an internal value that is not
b45f050a 417copyable.
4633a7c4 418
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419=item B<-P> not allowed for setuid/setgid script
420
421(F) The script would have to be opened by the C preprocessor by name,
422which provides a race condition that breaks security.
423
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424=item Buffer overflow in prime_env_iter: %s
425
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426(W internal) A warning peculiar to VMS. While Perl was preparing to
427iterate over %ENV, it encountered a logical name or symbol definition
428which was too long, so it was truncated to the string shown.
f675dbe5 429
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430=item Callback called exit
431
4929bf7b 432(F) A subroutine invoked from an external package via call_sv()
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433exited by calling exit.
434
6df41af2 435=item %s() called too early to check prototype
f675dbe5 436
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437(W prototype) You've called a function that has a prototype before the
438parser saw a definition or declaration for it, and Perl could not check
439that the call conforms to the prototype. You need to either add an
440early prototype declaration for the subroutine in question, or move the
441subroutine definition ahead of the call to get proper prototype
442checking. Alternatively, if you are certain that you're calling the
443function correctly, you may put an ampersand before the name to avoid
444the warning. See L<perlsub>.
f675dbe5 445
6df41af2 446=item / cannot take a count
a0d0e21e 447
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448(F) You had an unpack template indicating a counted-length string, but
449you have also specified an explicit size for the string. See
450L<perlfunc/pack>.
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451
452=item Can't bless non-reference value
453
454(F) Only hard references may be blessed. This is how Perl "enforces"
455encapsulation of objects. See L<perlobj>.
456
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457=item Can't call method "%s" in empty package "%s"
458
459(F) You called a method correctly, and it correctly indicated a package
460functioning as a class, but that package doesn't have ANYTHING defined
461in it, let alone methods. See L<perlobj>.
462
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463=item Can't call method "%s" on an undefined value
464
465(F) You used the syntax of a method call, but the slot filled by the
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466object reference or package name contains an undefined value. Something
467like this will reproduce the error:
6df41af2
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468
469 $BADREF = undef;
470 process $BADREF 1,2,3;
471 $BADREF->process(1,2,3);
472
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473=item Can't call method "%s" on unblessed reference
474
54310121 475(F) A method call must know in what package it's supposed to run. It
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476ordinarily finds this out from the object reference you supply, but you
477didn't supply an object reference in this case. A reference isn't an
478object reference until it has been blessed. See L<perlobj>.
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479
480=item Can't call method "%s" without a package or object reference
481
482(F) You used the syntax of a method call, but the slot filled by the
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483object reference or package name contains an expression that returns a
484defined value which is neither an object reference nor a package name.
72b5445b
GS
485Something like this will reproduce the error:
486
487 $BADREF = 42;
488 process $BADREF 1,2,3;
489 $BADREF->process(1,2,3);
490
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491=item Can't chdir to %s
492
493(F) You called C<perl -x/foo/bar>, but C</foo/bar> is not a directory
494that you can chdir to, possibly because it doesn't exist.
495
0545a864 496=item Can't check filesystem of script "%s" for nosuid
104d25b7 497
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498(P) For some reason you can't check the filesystem of the script for
499nosuid.
104d25b7 500
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501=item Can't coerce array into hash
502
503(F) You used an array where a hash was expected, but the array has no
504information on how to map from keys to array indices. You can do that
505only with arrays that have a hash reference at index 0.
506
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507=item Can't coerce %s to integer in %s
508
509(F) Certain types of SVs, in particular real symbol table entries
55497cff 510(typeglobs), can't be forced to stop being what they are. So you can't
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511say things like:
512
513 *foo += 1;
514
515You CAN say
516
517 $foo = *foo;
518 $foo += 1;
519
520but then $foo no longer contains a glob.
521
522=item Can't coerce %s to number in %s
523
524(F) Certain types of SVs, in particular real symbol table entries
55497cff 525(typeglobs), can't be forced to stop being what they are.
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526
527=item Can't coerce %s to string in %s
528
529(F) Certain types of SVs, in particular real symbol table entries
55497cff 530(typeglobs), can't be forced to stop being what they are.
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531
532=item Can't create pipe mailbox
533
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534(P) An error peculiar to VMS. The process is suffering from exhausted
535quotas or other plumbing problems.
a0d0e21e 536
eb64745e 537=item Can't declare class for non-scalar %s in "%s"
a0d0e21e 538
eb64745e
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539(S) Currently, only scalar variables can declared with a specific class
540qualifier in a "my" or "our" declaration. The semantics may be extended
541for other types of variables in future.
542
543=item Can't declare %s in "%s"
544
545(F) Only scalar, array, and hash variables may be declared as "my" or
546"our" variables. They must have ordinary identifiers as names.
a0d0e21e 547
6df41af2
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548=item Can't do inplace edit: %s is not a regular file
549
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GS
550(S inplace) You tried to use the B<-i> switch on a special file, such as
551a file in /dev, or a FIFO. The file was ignored.
6df41af2 552
a0d0e21e
LW
553=item Can't do inplace edit on %s: %s
554
be771a83
GS
555(S inplace) The creation of the new file failed for the indicated
556reason.
a0d0e21e 557
54310121 558=item Can't do inplace edit without backup
a0d0e21e 559
be771a83
GS
560(F) You're on a system such as MS-DOS that gets confused if you try
561reading from a deleted (but still opened) file. You have to say
562C<-i.bak>, or some such.
a0d0e21e 563
10f9c03d 564=item Can't do inplace edit: %s would not be unique
a0d0e21e 565
e476b1b5 566(S inplace) Your filesystem does not support filenames longer than 14
10f9c03d
CK
567characters and Perl was unable to create a unique filename during
568inplace editing with the B<-i> switch. The file was ignored.
a0d0e21e 569
79eeca27 570=item Can't do {n,m} with n > m before << HERE in regex m/%s/
a0d0e21e 571
b45f050a 572(F) Minima must be less than or equal to maxima. If you really want your
79eeca27 573regexp to match something 0 times, just put {0}. The << HERE shows in the
b45f050a 574regular expression about where the problem was discovered. See L<perlre>.
a0d0e21e
LW
575
576=item Can't do setegid!
577
be771a83
GS
578(P) The setegid() call failed for some reason in the setuid emulator of
579suidperl.
a0d0e21e
LW
580
581=item Can't do seteuid!
582
583(P) The setuid emulator of suidperl failed for some reason.
584
585=item Can't do setuid
586
be771a83
GS
587(F) This typically means that ordinary perl tried to exec suidperl to do
588setuid emulation, but couldn't exec it. It looks for a name of the form
589sperl5.000 in the same directory that the perl executable resides under
590the name perl5.000, typically /usr/local/bin on Unix machines. If the
591file is there, check the execute permissions. If it isn't, ask your
592sysadmin why he and/or she removed it.
a0d0e21e
LW
593
594=item Can't do waitpid with flags
595
be771a83
GS
596(F) This machine doesn't have either waitpid() or wait4(), so only
597waitpid() without flags is emulated.
a0d0e21e 598
a0d0e21e
LW
599=item Can't emulate -%s on #! line
600
be771a83
GS
601(F) The #! line specifies a switch that doesn't make sense at this
602point. For example, it'd be kind of silly to put a B<-x> on the #!
603line.
a0d0e21e
LW
604
605=item Can't exec "%s": %s
606
be771a83
GS
607(W exec) An system(), exec(), or piped open call could not execute the
608named program for the indicated reason. Typical reasons include: the
609permissions were wrong on the file, the file wasn't found in
610C<$ENV{PATH}>, the executable in question was compiled for another
611architecture, or the #! line in a script points to an interpreter that
612can't be run for similar reasons. (Or maybe your system doesn't support
613#! at all.)
a0d0e21e
LW
614
615=item Can't exec %s
616
be771a83
GS
617(F) Perl was trying to execute the indicated program for you because
618that's what the #! line said. If that's not what you wanted, you may
619need to mention "perl" on the #! line somewhere.
a0d0e21e
LW
620
621=item Can't execute %s
622
be771a83
GS
623(F) You used the B<-S> switch, but the copies of the script to execute
624found in the PATH did not have correct permissions.
2a92aaa0 625
6df41af2 626=item Can't find an opnumber for "%s"
2a92aaa0 627
be771a83
GS
628(F) A string of a form C<CORE::word> was given to prototype(), but there
629is no builtin with the name C<word>.
6df41af2 630
56ca2fc0
JH
631=item Can't find %s character property "%s"
632
633(F) You used C<\p{}> or C<\P{}> but the character property by that name
634could not be find. Maybe you mispelled the name of the property
635(remember that the names of character properties consist only of
636alphanumeric characters), or maybe you forgot the C<Is> or C<In> prefix?
637
6df41af2
GS
638=item Can't find label %s
639
be771a83
GS
640(F) You said to goto a label that isn't mentioned anywhere that it's
641possible for us to go to. See L<perlfunc/goto>.
2a92aaa0
GS
642
643=item Can't find %s on PATH
644
be771a83
GS
645(F) You used the B<-S> switch, but the script to execute could not be
646found in the PATH.
a0d0e21e 647
6df41af2 648=item Can't find %s on PATH, '.' not in PATH
a0d0e21e 649
be771a83
GS
650(F) You used the B<-S> switch, but the script to execute could not be
651found in the PATH, or at least not with the correct permissions. The
652script exists in the current directory, but PATH prohibits running it.
a0d0e21e
LW
653
654=item Can't find string terminator %s anywhere before EOF
655
be771a83
GS
656(F) Perl strings can stretch over multiple lines. This message means
657that the closing delimiter was omitted. Because bracketed quotes count
658nesting levels, the following is missing its final parenthesis:
a0d0e21e 659
fb73857a 660 print q(The character '(' starts a side comment.);
661
be771a83
GS
662If you're getting this error from a here-document, you may have included
663unseen whitespace before or after your closing tag. A good programmer's
664editor will have a way to help you find these characters.
a0d0e21e 665
64977eb6 666=item Can't find %s property definition %s
0103b764 667
f91328b7
JH
668(F) You may have tried to use C<\p> which means a Unicode property for
669example \p{Lu} is all uppercase letters. Escape the C<\p>, either
670C<\\p> (just the C<\p>) or by C<\Q\p> (the rest of the string, until
671possible C<\E>).
0103b764 672
a0d0e21e
LW
673=item Can't fork
674
be771a83
GS
675(F) A fatal error occurred while trying to fork while opening a
676pipeline.
a0d0e21e 677
748a9306
LW
678=item Can't get filespec - stale stat buffer?
679
be771a83
GS
680(S) A warning peculiar to VMS. This arises because of the difference
681between access checks under VMS and under the Unix model Perl assumes.
682Under VMS, access checks are done by filename, rather than by bits in
683the stat buffer, so that ACLs and other protections can be taken into
684account. Unfortunately, Perl assumes that the stat buffer contains all
685the necessary information, and passes it, instead of the filespec, to
686the access checking routine. It will try to retrieve the filespec using
687the device name and FID present in the stat buffer, but this works only
688if you haven't made a subsequent call to the CRTL stat() routine,
689because the device name is overwritten with each call. If this warning
690appears, the name lookup failed, and the access checking routine gave up
691and returned FALSE, just to be conservative. (Note: The access checking
692routine knows about the Perl C<stat> operator and file tests, so you
693shouldn't ever see this warning in response to a Perl command; it arises
694only if some internal code takes stat buffers lightly.)
748a9306 695
a0d0e21e
LW
696=item Can't get pipe mailbox device name
697
be771a83
GS
698(P) An error peculiar to VMS. After creating a mailbox to act as a
699pipe, Perl can't retrieve its name for later use.
a0d0e21e
LW
700
701=item Can't get SYSGEN parameter value for MAXBUF
702
748a9306
LW
703(P) An error peculiar to VMS. Perl asked $GETSYI how big you want your
704mailbox buffers to be, and didn't get an answer.
a0d0e21e 705
6df41af2 706=item Can't "goto" into the middle of a foreach loop
a0d0e21e 707
be771a83
GS
708(F) A "goto" statement was executed to jump into the middle of a foreach
709loop. You can't get there from here. See L<perlfunc/goto>.
6df41af2
GS
710
711=item Can't "goto" out of a pseudo block
712
be771a83
GS
713(F) A "goto" statement was executed to jump out of what might look like
714a block, except that it isn't a proper block. This usually occurs if
715you tried to jump out of a sort() block or subroutine, which is a no-no.
716See L<perlfunc/goto>.
a0d0e21e 717
b150fb22
RH
718=item Can't goto subroutine from an eval-string
719
be771a83
GS
720(F) The "goto subroutine" call can't be used to jump out of an eval
721"string". (You can use it to jump out of an eval {BLOCK}, but you
722probably don't want to.)
b150fb22 723
6df41af2
GS
724=item Can't goto subroutine outside a subroutine
725
be771a83
GS
726(F) The deeply magical "goto subroutine" call can only replace one
727subroutine call for another. It can't manufacture one out of whole
728cloth. In general you should be calling it out of only an AUTOLOAD
729routine anyway. See L<perlfunc/goto>.
6df41af2 730
0b5b802d
GS
731=item Can't ignore signal CHLD, forcing to default
732
be771a83
GS
733(W signal) Perl has detected that it is being run with the SIGCHLD
734signal (sometimes known as SIGCLD) disabled. Since disabling this
735signal will interfere with proper determination of exit status of child
736processes, Perl has reset the signal to its default value. This
737situation typically indicates that the parent program under which Perl
738may be running (e.g. cron) is being very careless.
0b5b802d 739
6df41af2 740=item Can't "last" outside a loop block
4633a7c4 741
6df41af2 742(F) A "last" statement was executed to break out of the current block,
be771a83
GS
743except that there's this itty bitty problem called there isn't a current
744block. Note that an "if" or "else" block doesn't count as a "loopish"
745block, as doesn't a block given to sort(), map() or grep(). You can
746usually double the curlies to get the same effect though, because the
747inner curlies will be considered a block that loops once. See
748L<perlfunc/last>.
4633a7c4 749
748a9306
LW
750=item Can't localize lexical variable %s
751
2ba9eb46 752(F) You used local on a variable name that was previously declared as a
748a9306
LW
753lexical variable using "my". This is not allowed. If you want to
754localize a package variable of the same name, qualify it with the
755package name.
756
0ebe0038
SM
757=item Can't localize pseudo-hash element
758
be771a83
GS
759(F) You said something like C<< local $ar->{'key'} >>, where $ar is a
760reference to a pseudo-hash. That hasn't been implemented yet, but you
761can get a similar effect by localizing the corresponding array element
762directly -- C<< local $ar->[$ar->[0]{'key'}] >>.
0ebe0038 763
6df41af2 764=item Can't localize through a reference
4727527e 765
6df41af2
GS
766(F) You said something like C<local $$ref>, which Perl can't currently
767handle, because when it goes to restore the old value of whatever $ref
be771a83 768pointed to after the scope of the local() is finished, it can't be sure
64977eb6 769that $ref will still be a reference.
4727527e 770
ec889f3a
GS
771=item Can't locate %s
772
773(F) You said to C<do> (or C<require>, or C<use>) a file that couldn't be
774found. Perl looks for the file in all the locations mentioned in @INC,
be771a83
GS
775unless the file name included the full path to the file. Perhaps you
776need to set the PERL5LIB or PERL5OPT environment variable to say where
777the extra library is, or maybe the script needs to add the library name
778to @INC. Or maybe you just misspelled the name of the file. See
779L<perlfunc/require> and L<lib>.
a0d0e21e 780
6df41af2
GS
781=item Can't locate auto/%s.al in @INC
782
be771a83
GS
783(F) A function (or method) was called in a package which allows
784autoload, but there is no function to autoload. Most probable causes
785are a misprint in a function/method name or a failure to C<AutoSplit>
786the file, say, by doing C<make install>.
6df41af2 787
a0d0e21e
LW
788=item Can't locate object method "%s" via package "%s"
789
790(F) You called a method correctly, and it correctly indicated a package
791functioning as a class, but that package doesn't define that particular
2ba9eb46 792method, nor does any of its base classes. See L<perlobj>.
a0d0e21e 793
c1899e02
GS
794=item (perhaps you forgot to load "%s"?)
795
796(F) This is an educated guess made in conjunction with the message
797"Can't locate object method \"%s\" via package \"%s\"". It often means
798that a method requires a package that has not been loaded.
799
a0d0e21e
LW
800=item Can't locate package %s for @%s::ISA
801
be771a83
GS
802(W syntax) The @ISA array contained the name of another package that
803doesn't seem to exist.
a0d0e21e 804
3e3baf6d
TB
805=item Can't make list assignment to \%ENV on this system
806
be771a83
GS
807(F) List assignment to %ENV is not supported on some systems, notably
808VMS.
3e3baf6d 809
a0d0e21e
LW
810=item Can't modify %s in %s
811
be771a83
GS
812(F) You aren't allowed to assign to the item indicated, or otherwise try
813to change it, such as with an auto-increment.
a0d0e21e 814
54310121 815=item Can't modify nonexistent substring
a0d0e21e
LW
816
817(P) The internal routine that does assignment to a substr() was handed
818a NULL.
819
6df41af2
GS
820=item Can't modify non-lvalue subroutine call
821
822(F) Subroutines meant to be used in lvalue context should be declared as
823such, see L<perlsub/"Lvalue subroutines">.
824
5f05dabc 825=item Can't msgrcv to read-only var
a0d0e21e 826
5f05dabc 827(F) The target of a msgrcv must be modifiable to be used as a receive
a0d0e21e
LW
828buffer.
829
6df41af2
GS
830=item Can't "next" outside a loop block
831
832(F) A "next" statement was executed to reiterate the current block, but
833there isn't a current block. Note that an "if" or "else" block doesn't
be771a83
GS
834count as a "loopish" block, as doesn't a block given to sort(), map() or
835grep(). You can usually double the curlies to get the same effect
836though, because the inner curlies will be considered a block that loops
837once. See L<perlfunc/next>.
6df41af2 838
a0d0e21e
LW
839=item Can't open %s: %s
840
c47ff5f1 841(S inplace) The implicit opening of a file through use of the C<< <> >>
08e9d68e
DD
842filehandle, either implicitly under the C<-n> or C<-p> command-line
843switches, or explicitly, failed for the indicated reason. Usually this
be771a83
GS
844is because you don't have read permission for a file which you named on
845the command line.
a0d0e21e
LW
846
847=item Can't open bidirectional pipe
848
be771a83
GS
849(W pipe) You tried to say C<open(CMD, "|cmd|")>, which is not supported.
850You can try any of several modules in the Perl library to do this, such
851as IPC::Open2. Alternately, direct the pipe's output to a file using
852">", and then read it in under a different file handle.
a0d0e21e 853
748a9306
LW
854=item Can't open error file %s as stderr
855
be771a83
GS
856(F) An error peculiar to VMS. Perl does its own command line
857redirection, and couldn't open the file specified after '2>' or '2>>' on
858the command line for writing.
748a9306
LW
859
860=item Can't open input file %s as stdin
861
be771a83
GS
862(F) An error peculiar to VMS. Perl does its own command line
863redirection, and couldn't open the file specified after '<' on the
864command line for reading.
748a9306
LW
865
866=item Can't open output file %s as stdout
867
be771a83
GS
868(F) An error peculiar to VMS. Perl does its own command line
869redirection, and couldn't open the file specified after '>' or '>>' on
870the command line for writing.
748a9306
LW
871
872=item Can't open output pipe (name: %s)
873
be771a83
GS
874(P) An error peculiar to VMS. Perl does its own command line
875redirection, and couldn't open the pipe into which to send data destined
876for stdout.
748a9306 877
584d69ec 878=item Can't open perl script%s: %s
a0d0e21e
LW
879
880(F) The script you specified can't be opened for the indicated reason.
881
6df41af2
GS
882=item Can't read CRTL environ
883
884(S) A warning peculiar to VMS. Perl tried to read an element of %ENV
885from the CRTL's internal environment array and discovered the array was
886missing. You need to figure out where your CRTL misplaced its environ
be771a83
GS
887or define F<PERL_ENV_TABLES> (see L<perlvms>) so that environ is not
888searched.
6df41af2 889
7bac28a0 890=item Can't redefine active sort subroutine %s
891
892(F) Perl optimizes the internal handling of sort subroutines and keeps
be771a83
GS
893pointers into them. You tried to redefine one such sort subroutine when
894it was currently active, which is not allowed. If you really want to do
7bac28a0 895this, you should write C<sort { &func } @x> instead of C<sort func @x>.
896
6df41af2
GS
897=item Can't "redo" outside a loop block
898
899(F) A "redo" statement was executed to restart the current block, but
900there isn't a current block. Note that an "if" or "else" block doesn't
901count as a "loopish" block, as doesn't a block given to sort(), map()
902or grep(). You can usually double the curlies to get the same effect
903though, because the inner curlies will be considered a block that
904loops once. See L<perlfunc/redo>.
905
64977eb6 906=item Can't remove %s: %s, skipping file
10f9c03d 907
be771a83
GS
908(S inplace) You requested an inplace edit without creating a backup
909file. Perl was unable to remove the original file to replace it with
910the modified file. The file was left unmodified.
10f9c03d 911
a0d0e21e
LW
912=item Can't rename %s to %s: %s, skipping file
913
e476b1b5 914(S inplace) The rename done by the B<-i> switch failed for some reason,
10f9c03d 915probably because you don't have write permission to the directory.
a0d0e21e 916
748a9306
LW
917=item Can't reopen input pipe (name: %s) in binary mode
918
be771a83
GS
919(P) An error peculiar to VMS. Perl thought stdin was a pipe, and tried
920to reopen it to accept binary data. Alas, it failed.
748a9306 921
6df41af2
GS
922=item Can't resolve method `%s' overloading `%s' in package `%s'
923
be771a83
GS
924(F|P) Error resolving overloading specified by a method name (as opposed
925to a subroutine reference): no such method callable via the package. If
926method name is C<???>, this is an internal error.
6df41af2 927
a0d0e21e
LW
928=item Can't reswap uid and euid
929
be771a83
GS
930(P) The setreuid() call failed for some reason in the setuid emulator of
931suidperl.
a0d0e21e 932
cd06dffe
GS
933=item Can't return %s from lvalue subroutine
934
be771a83
GS
935(F) Perl detected an attempt to return illegal lvalues (such as
936temporary or readonly values) from a subroutine used as an lvalue. This
937is not allowed.
cd06dffe 938
78f9721b
SM
939=item Can't return %s to lvalue scalar context
940
941(F) You tried to return a complete array or hash from an lvalue subroutine,
942but you called the subroutine in a way that made Perl think you meant
943to return only one value. You probably meant to write parentheses around
944the call to the subroutine, which tell Perl that the call should be in
945list context.
946
6df41af2
GS
947=item Can't return outside a subroutine
948
949(F) The return statement was executed in mainline code, that is, where
950there was no subroutine call to return out of. See L<perlsub>.
951
a0d0e21e
LW
952=item Can't stat script "%s"
953
be771a83
GS
954(P) For some reason you can't fstat() the script even though you have it
955open already. Bizarre.
a0d0e21e
LW
956
957=item Can't swap uid and euid
958
be771a83
GS
959(P) The setreuid() call failed for some reason in the setuid emulator of
960suidperl.
a0d0e21e
LW
961
962=item Can't take log of %g
963
fb73857a 964(F) For ordinary real numbers, you can't take the logarithm of a
965negative number or zero. There's a Math::Complex package that comes
be771a83
GS
966standard with Perl, though, if you really want to do that for the
967negative numbers.
a0d0e21e
LW
968
969=item Can't take sqrt of %g
970
971(F) For ordinary real numbers, you can't take the square root of a
fb73857a 972negative number. There's a Math::Complex package that comes standard
973with Perl, though, if you really want to do that.
a0d0e21e
LW
974
975=item Can't undef active subroutine
976
977(F) You can't undefine a routine that's currently running. You can,
978however, redefine it while it's running, and you can even undef the
979redefined subroutine while the old routine is running. Go figure.
980
981=item Can't unshift
982
983(F) You tried to unshift an "unreal" array that can't be unshifted, such
984as the main Perl stack.
985
986=item Can't upgrade that kind of scalar
987
be771a83
GS
988(P) The internal sv_upgrade routine adds "members" to an SV, making it
989into a more specialized kind of SV. The top several SV types are so
990specialized, however, that they cannot be interconverted. This message
991indicates that such a conversion was attempted.
a0d0e21e
LW
992
993=item Can't upgrade to undef
994
be771a83
GS
995(P) The undefined SV is the bottom of the totem pole, in the scheme of
996upgradability. Upgrading to undef indicates an error in the code
997calling sv_upgrade.
a0d0e21e 998
6df41af2
GS
999=item Can't use an undefined value as %s reference
1000
1001(F) A value used as either a hard reference or a symbolic reference must
1002be a defined value. This helps to delurk some insidious errors.
1003
1db89ea5
BS
1004=item Can't use anonymous symbol table for method lookup
1005
1006(P) The internal routine that does method lookup was handed a symbol
1007table that doesn't have a name. Symbol tables can become anonymous
1008for example by undefining stashes: C<undef %Some::Package::>.
1009
6df41af2
GS
1010=item Can't use bareword ("%s") as %s ref while "strict refs" in use
1011
be771a83
GS
1012(F) Only hard references are allowed by "strict refs". Symbolic
1013references are disallowed. See L<perlref>.
6df41af2 1014
90b75b61 1015=item Can't use %! because Errno.pm is not available
1d2dff63
GS
1016
1017(F) The first time the %! hash is used, perl automatically loads the
1018Errno.pm module. The Errno module is expected to tie the %! hash to
1019provide symbolic names for C<$!> errno values.
1020
6df41af2
GS
1021=item Can't use %s for loop variable
1022
be771a83
GS
1023(F) Only a simple scalar variable may be used as a loop variable on a
1024foreach.
6df41af2
GS
1025
1026=item Can't use global %s in "my"
1027
be771a83
GS
1028(F) You tried to declare a magical variable as a lexical variable. This
1029is not allowed, because the magic can be tied to only one location
1030(namely the global variable) and it would be incredibly confusing to
1031have variables in your program that looked like magical variables but
6df41af2
GS
1032weren't.
1033
c07a80fd 1034=item Can't use "my %s" in sort comparison
1035
1036(F) The global variables $a and $b are reserved for sort comparisons.
c47ff5f1 1037You mentioned $a or $b in the same line as the <=> or cmp operator,
c07a80fd 1038and the variable had earlier been declared as a lexical variable.
1039Either qualify the sort variable with the package name, or rename the
1040lexical variable.
1041
a0d0e21e
LW
1042=item Can't use %s ref as %s ref
1043
1044(F) You've mixed up your reference types. You have to dereference a
1045reference of the type needed. You can use the ref() function to
1046test the type of the reference, if need be.
1047
748a9306 1048=item Can't use string ("%s") as %s ref while "strict refs" in use
a0d0e21e 1049
be771a83
GS
1050(F) Only hard references are allowed by "strict refs". Symbolic
1051references are disallowed. See L<perlref>.
a0d0e21e 1052
748a9306
LW
1053=item Can't use subscript on %s
1054
1055(F) The compiler tried to interpret a bracketed expression as a
1056subscript. But to the left of the brackets was an expression that
1057didn't look like an array reference, or anything else subscriptable.
1058
6df41af2
GS
1059=item Can't use \%c to mean $%c in expression
1060
75b44862
GS
1061(W syntax) In an ordinary expression, backslash is a unary operator that
1062creates a reference to its argument. The use of backslash to indicate a
1063backreference to a matched substring is valid only as part of a regular
be771a83
GS
1064expression pattern. Trying to do this in ordinary Perl code produces a
1065value that prints out looking like SCALAR(0xdecaf). Use the $1 form
1066instead.
6df41af2 1067
810b8aa5
GS
1068=item Can't weaken a nonreference
1069
1070(F) You attempted to weaken something that was not a reference. Only
1071references can be weakened.
1072
5f05dabc 1073=item Can't x= to read-only value
a0d0e21e 1074
be771a83
GS
1075(F) You tried to repeat a constant value (often the undefined value)
1076with an assignment operator, which implies modifying the value itself.
a0d0e21e
LW
1077Perhaps you need to copy the value to a temporary, and repeat that.
1078
5a211162 1079=item chmod() mode argument is missing initial 0
a0d0e21e 1080
e476b1b5 1081(W chmod) A novice will sometimes say
a0d0e21e
LW
1082
1083 chmod 777, $filename
1084
be771a83
GS
1085not realizing that 777 will be interpreted as a decimal number,
1086equivalent to 01411. Octal constants are introduced with a leading 0 in
1087Perl, as in C.
a0d0e21e 1088
9ddeeac9 1089=item close() on unopened filehandle %s
a0d0e21e 1090
e476b1b5 1091(W unopened) You tried to close a filehandle that was never opened.
a0d0e21e 1092
6df41af2
GS
1093=item %s: Command not found
1094
be771a83
GS
1095(A) You've accidentally run your script through B<csh> instead of Perl.
1096Check the #! line, or manually feed your script into Perl yourself.
6df41af2 1097
7a2e2cd6 1098=item Compilation failed in require
1099
1100(F) Perl could not compile a file specified in a C<require> statement.
be771a83
GS
1101Perl uses this generic message when none of the errors that it
1102encountered were severe enough to halt compilation immediately.
7a2e2cd6 1103
c3464db5
DD
1104=item Complex regular subexpression recursion limit (%d) exceeded
1105
be771a83
GS
1106(W regexp) The regular expression engine uses recursion in complex
1107situations where back-tracking is required. Recursion depth is limited
1108to 32766, or perhaps less in architectures where the stack cannot grow
1109arbitrarily. ("Simple" and "medium" situations are handled without
1110recursion and are not subject to a limit.) Try shortening the string
1111under examination; looping in Perl code (e.g. with C<while>) rather than
1112in the regular expression engine; or rewriting the regular expression so
c2e66d9e 1113that it is simpler or backtracks less. (See L<perlfaq2> for information
be771a83 1114on I<Mastering Regular Expressions>.)
c3464db5 1115
69282e91 1116=item connect() on closed socket %s
a0d0e21e 1117
be771a83
GS
1118(W closed) You tried to do a connect on a closed socket. Did you forget
1119to check the return value of your socket() call? See
1120L<perlfunc/connect>.
a0d0e21e 1121
41ab332f 1122=item Constant(%s)%s: %s
6df41af2 1123
be771a83
GS
1124(F) The parser found inconsistencies either while attempting to define
1125an overloaded constant, or when trying to find the character name
1126specified in the C<\N{...}> escape. Perhaps you forgot to load the
1127corresponding C<overload> or C<charnames> pragma? See L<charnames> and
1128L<overload>.
6df41af2 1129
779c5bc9
GS
1130=item Constant is not %s reference
1131
1132(F) A constant value (perhaps declared using the C<use constant> pragma)
be771a83
GS
1133is being dereferenced, but it amounts to the wrong type of reference.
1134The message indicates the type of reference that was expected. This
1135usually indicates a syntax error in dereferencing the constant value.
779c5bc9
GS
1136See L<perlsub/"Constant Functions"> and L<constant>.
1137
4cee8e80
CS
1138=item Constant subroutine %s redefined
1139
be771a83
GS
1140(S|W redefine) You redefined a subroutine which had previously been
1141eligible for inlining. See L<perlsub/"Constant Functions"> for
1142commentary and workarounds.
4cee8e80 1143
9607fc9c 1144=item Constant subroutine %s undefined
1145
be771a83
GS
1146(W misc) You undefined a subroutine which had previously been eligible
1147for inlining. See L<perlsub/"Constant Functions"> for commentary and
1148workarounds.
9607fc9c 1149
e7ea3e70
IZ
1150=item Copy method did not return a reference
1151
64977eb6 1152(F) The method which overloads "=" is buggy. See
13a2d996 1153L<overload/Copy Constructor>.
e7ea3e70 1154
6798c92b
GS
1155=item CORE::%s is not a keyword
1156
1157(F) The CORE:: namespace is reserved for Perl keywords.
1158
a0d0e21e
LW
1159=item corrupted regexp pointers
1160
1161(P) The regular expression engine got confused by what the regular
1162expression compiler gave it.
1163
1164=item corrupted regexp program
1165
be771a83
GS
1166(P) The regular expression engine got passed a regexp program without a
1167valid magic number.
a0d0e21e 1168
6df41af2
GS
1169=item Corrupt malloc ptr 0x%lx at 0x%lx
1170
1171(P) The malloc package that comes with Perl had an internal failure.
1172
1173=item C<-p> destination: %s
1174
1175(F) An error occurred during the implicit output invoked by the C<-p>
1176command-line switch. (This output goes to STDOUT unless you've
1177redirected it with select().)
1178
1179=item C<-T> and C<-B> not implemented on filehandles
1180
1181(F) Perl can't peek at the stdio buffer of filehandles when it doesn't
1182know about your kind of stdio. You'll have to use a filename instead.
1183
a0d0e21e
LW
1184=item Deep recursion on subroutine "%s"
1185
be771a83
GS
1186(W recursion) This subroutine has called itself (directly or indirectly)
1187100 times more than it has returned. This probably indicates an
1188infinite recursion, unless you're writing strange benchmark programs, in
1189which case it indicates something else.
a0d0e21e 1190
f10b0346 1191=item defined(@array) is deprecated
69794302 1192
be771a83
GS
1193(D deprecated) defined() is not usually useful on arrays because it
1194checks for an undefined I<scalar> value. If you want to see if the
64977eb6 1195array is empty, just use C<if (@array) { # not empty }> for example.
69794302 1196
f10b0346 1197=item defined(%hash) is deprecated
69794302 1198
be771a83
GS
1199(D deprecated) defined() is not usually useful on hashes because it
1200checks for an undefined I<scalar> value. If you want to see if the hash
64977eb6 1201is empty, just use C<if (%hash) { # not empty }> for example.
69794302 1202
fc36a67e 1203=item Delimiter for here document is too long
1204
be771a83
GS
1205(F) In a here document construct like C<<<FOO>, the label C<FOO> is too
1206long for Perl to handle. You have to be seriously twisted to write code
1207that triggers this error.
fc36a67e 1208
3cdd684c
TP
1209=item Did not produce a valid header
1210
1211See Server error.
1212
6df41af2
GS
1213=item %s did not return a true value
1214
1215(F) A required (or used) file must return a true value to indicate that
1216it compiled correctly and ran its initialization code correctly. It's
1217traditional to end such a file with a "1;", though any true value would
1218do. See L<perlfunc/require>.
1219
cc507455 1220=item (Did you mean &%s instead?)
4633a7c4 1221
be771a83
GS
1222(W) You probably referred to an imported subroutine &FOO as $FOO or some
1223such.
4633a7c4 1224
cc507455 1225=item (Did you mean "local" instead of "our"?)
33633739 1226
be771a83
GS
1227(W misc) Remember that "our" does not localize the declared global
1228variable. You have declared it again in the same lexical scope, which
1229seems superfluous.
33633739 1230
cc507455 1231=item (Did you mean $ or @ instead of %?)
a0d0e21e 1232
be771a83
GS
1233(W) You probably said %hash{$key} when you meant $hash{$key} or
1234@hash{@keys}. On the other hand, maybe you just meant %hash and got
1235carried away.
748a9306 1236
7e1af8bc 1237=item Died
5f05dabc 1238
1239(F) You passed die() an empty string (the equivalent of C<die "">) or
1240you called it with no args and both C<$@> and C<$_> were empty.
1241
3cdd684c
TP
1242=item Document contains no data
1243
1244See Server error.
1245
a0d0e21e
LW
1246=item Don't know how to handle magic of type '%s'
1247
1248(P) The internal handling of magical variables has been cursed.
1249
1250=item do_study: out of memory
1251
1252(P) This should have been caught by safemalloc() instead.
1253
6df41af2
GS
1254=item (Do you need to predeclare %s?)
1255
1256(S) This is an educated guess made in conjunction with the message "%s
1257found where operator expected". It often means a subroutine or module
1258name is being referenced that hasn't been declared yet. This may be
1259because of ordering problems in your file, or because of a missing
be771a83
GS
1260"sub", "package", "require", or "use" statement. If you're referencing
1261something that isn't defined yet, you don't actually have to define the
1262subroutine or package before the current location. You can use an empty
1263"sub foo;" or "package FOO;" to enter a "forward" declaration.
6df41af2 1264
a0d0e21e
LW
1265=item Duplicate free() ignored
1266
be771a83
GS
1267(S malloc) An internal routine called free() on something that had
1268already been freed.
a0d0e21e 1269
4633a7c4
LW
1270=item elseif should be elsif
1271
be771a83
GS
1272(S) There is no keyword "elseif" in Perl because Larry thinks it's ugly.
1273Your code will be interpreted as an attempt to call a method named
1274"elseif" for the class returned by the following block. This is
4633a7c4
LW
1275unlikely to be what you want.
1276
85ab1d1d 1277=item entering effective %s failed
5ff3f7a4 1278
85ab1d1d 1279(F) While under the C<use filetest> pragma, switching the real and
5ff3f7a4
GS
1280effective uids or gids failed.
1281
748a9306
LW
1282=item Error converting file specification %s
1283
5f05dabc 1284(F) An error peculiar to VMS. Because Perl may have to deal with file
748a9306 1285specifications in either VMS or Unix syntax, it converts them to a
be771a83
GS
1286single form when it must operate on them directly. Either you've passed
1287an invalid file specification to Perl, or you've found a case the
1288conversion routines don't handle. Drat.
748a9306 1289
e4d48cc9
GS
1290=item %s: Eval-group in insecure regular expression
1291
be771a83
GS
1292(F) Perl detected tainted data when trying to compile a regular
1293expression that contains the C<(?{ ... })> zero-width assertion, which
1294is unsafe. See L<perlre/(?{ code })>, and L<perlsec>.
e4d48cc9 1295
e4d48cc9
GS
1296=item %s: Eval-group not allowed at run time
1297
be771a83
GS
1298(F) Perl tried to compile a regular expression containing the
1299C<(?{ ... })> zero-width assertion at run time, as it would when the
1300pattern contains interpolated values. Since that is a security risk, it
1301is not allowed. If you insist, you may still do this by explicitly
1302building the pattern from an interpolated string at run time and using
1303that in an eval(). See L<perlre/(?{ code })>.
e4d48cc9 1304
6df41af2
GS
1305=item %s: Eval-group not allowed, use re 'eval'
1306
be771a83
GS
1307(F) A regular expression contained the C<(?{ ... })> zero-width
1308assertion, but that construct is only allowed when the C<use re 'eval'>
1309pragma is in effect. See L<perlre/(?{ code })>.
6df41af2 1310
fc36a67e 1311=item Excessively long <> operator
1312
1313(F) The contents of a <> operator may not exceed the maximum size of a
1314Perl identifier. If you're just trying to glob a long list of
1315filenames, try using the glob() operator, or put the filenames into a
1316variable and glob that.
1317
f86702cc 1318=item Execution of %s aborted due to compilation errors
a0d0e21e
LW
1319
1320(F) The final summary message when a Perl compilation fails.
1321
1322=item Exiting eval via %s
1323
be771a83
GS
1324(W exiting) You are exiting an eval by unconventional means, such as a
1325goto, or a loop control statement.
e476b1b5
GS
1326
1327=item Exiting format via %s
1328
be771a83
GS
1329(W exiting) You are exiting an eval by unconventional means, such as a
1330goto, or a loop control statement.
a0d0e21e 1331
0a753a76 1332=item Exiting pseudo-block via %s
1333
be771a83
GS
1334(W exiting) You are exiting a rather special block construct (like a
1335sort block or subroutine) by unconventional means, such as a goto, or a
1336loop control statement. See L<perlfunc/sort>.
0a753a76 1337
a0d0e21e
LW
1338=item Exiting subroutine via %s
1339
be771a83
GS
1340(W exiting) You are exiting a subroutine by unconventional means, such
1341as a goto, or a loop control statement.
a0d0e21e
LW
1342
1343=item Exiting substitution via %s
1344
be771a83
GS
1345(W exiting) You are exiting a substitution by unconventional means, such
1346as a return, a goto, or a loop control statement.
a0d0e21e 1347
7b8d334a
GS
1348=item Explicit blessing to '' (assuming package main)
1349
be771a83
GS
1350(W misc) You are blessing a reference to a zero length string. This has
1351the effect of blessing the reference into the package main. This is
1352usually not what you want. Consider providing a default target package,
1353e.g. bless($ref, $p || 'MyPackage');
7b8d334a 1354
6df41af2
GS
1355=item %s: Expression syntax
1356
be771a83
GS
1357(A) You've accidentally run your script through B<csh> instead of Perl.
1358Check the #! line, or manually feed your script into Perl yourself.
6df41af2
GS
1359
1360=item %s failed--call queue aborted
1361
1362(F) An untrapped exception was raised while executing a CHECK, INIT, or
1363END subroutine. Processing of the remainder of the queue of such
1364routines has been prematurely ended.
1365
73b437c8
JH
1366=item false [] range "%s" in regexp
1367
be771a83
GS
1368(W regexp) A character class range must start and end at a literal
1369character, not another character class like C<\d> or C<[:alpha:]>. The
1370"-" in your false range is interpreted as a literal "-". Consider
1371quoting the "-", "\-". See L<perlre>.
73b437c8 1372
748a9306 1373=item Fatal VMS error at %s, line %d
a0d0e21e 1374
be771a83
GS
1375(P) An error peculiar to VMS. Something untoward happened in a VMS
1376system service or RTL routine; Perl's exit status should provide more
1377details. The filename in "at %s" and the line number in "line %d" tell
1378you which section of the Perl source code is distressed.
a0d0e21e
LW
1379
1380=item fcntl is not implemented
1381
1382(F) Your machine apparently doesn't implement fcntl(). What is this, a
1383PDP-11 or something?
1384
af8c498a 1385=item Filehandle %s opened only for input
a0d0e21e 1386
be771a83
GS
1387(W io) You tried to write on a read-only filehandle. If you intended it
1388to be a read-write filehandle, you needed to open it with "+<" or "+>"
1389or "+>>" instead of with "<" or nothing. If you intended only to write
1390the file, use ">" or ">>". See L<perlfunc/open>.
a0d0e21e 1391
af8c498a 1392=item Filehandle %s opened only for output
a0d0e21e 1393
be771a83
GS
1394(W io) You tried to read from a filehandle opened only for writing. If
1395you intended it to be a read/write filehandle, you needed to open it
1396with "+<" or "+>" or "+>>" instead of with "<" or nothing. If you
1397intended only to read from the file, use "<". See L<perlfunc/open>.
a0d0e21e
LW
1398
1399=item Final $ should be \$ or $name
1400
1401(F) You must now decide whether the final $ in a string was meant to be
be771a83
GS
1402a literal dollar sign, or was meant to introduce a variable name that
1403happens to be missing. So you have to put either the backslash or the
1404name.
a0d0e21e
LW
1405
1406=item Final @ should be \@ or @name
1407
1408(F) You must now decide whether the final @ in a string was meant to be
be771a83
GS
1409a literal "at" sign, or was meant to introduce a variable name that
1410happens to be missing. So you have to put either the backslash or the
1411name.
a0d0e21e 1412
56e90b21
GS
1413=item flock() on closed filehandle %s
1414
be771a83 1415(W closed) The filehandle you're attempting to flock() got itself closed
c289d2f7 1416some time before now. Check your control flow. flock() operates on
be771a83
GS
1417filehandles. Are you attempting to call flock() on a dirhandle by the
1418same name?
56e90b21 1419
79eeca27 1420=item Quantifier follows nothing before << HERE in regex m/%s/
6df41af2 1421
b45f050a 1422(F) You started a regular expression with a quantifier. Backslash it if you
79eeca27 1423meant it literally. The << HERE shows in the regular expression about where the
b45f050a 1424problem was discovered. See L<perlre>.
6df41af2
GS
1425
1426=item Format not terminated
1427
1428(F) A format must be terminated by a line with a solitary dot. Perl got
1429to the end of your file without finding such a line.
1430
a0d0e21e
LW
1431=item Format %s redefined
1432
e476b1b5 1433(W redefine) You redefined a format. To suppress this warning, say
a0d0e21e
LW
1434
1435 {
4438c4b7 1436 no warnings;
a0d0e21e
LW
1437 eval "format NAME =...";
1438 }
1439
a0d0e21e
LW
1440=item Found = in conditional, should be ==
1441
e476b1b5 1442(W syntax) You said
a0d0e21e
LW
1443
1444 if ($foo = 123)
1445
1446when you meant
1447
1448 if ($foo == 123)
1449
1450(or something like that).
1451
6df41af2
GS
1452=item %s found where operator expected
1453
1454(S) The Perl lexer knows whether to expect a term or an operator. If it
be771a83
GS
1455sees what it knows to be a term when it was expecting to see an
1456operator, it gives you this warning. Usually it indicates that an
1457operator or delimiter was omitted, such as a semicolon.
6df41af2 1458
a0d0e21e
LW
1459=item gdbm store returned %d, errno %d, key "%s"
1460
1461(S) A warning from the GDBM_File extension that a store failed.
1462
1463=item gethostent not implemented
1464
1465(F) Your C library apparently doesn't implement gethostent(), probably
1466because if it did, it'd feel morally obligated to return every hostname
1467on the Internet.
1468
69282e91 1469=item get%sname() on closed socket %s
a0d0e21e 1470
be771a83
GS
1471(W closed) You tried to get a socket or peer socket name on a closed
1472socket. Did you forget to check the return value of your socket() call?
a0d0e21e 1473
748a9306
LW
1474=item getpwnam returned invalid UIC %#o for user "%s"
1475
1476(S) A warning peculiar to VMS. The call to C<sys$getuai> underlying the
1477C<getpwnam> operator returned an invalid UIC.
1478
6df41af2
GS
1479=item getsockopt() on closed socket %s
1480
be771a83
GS
1481(W closed) You tried to get a socket option on a closed socket. Did you
1482forget to check the return value of your socket() call? See
6df41af2
GS
1483L<perlfunc/getsockopt>.
1484
1485=item Global symbol "%s" requires explicit package name
1486
1487(F) You've said "use strict vars", which indicates that all variables
1488must either be lexically scoped (using "my"), declared beforehand using
1489"our", or explicitly qualified to say which package the global variable
1490is in (using "::").
1491
e476b1b5
GS
1492=item glob failed (%s)
1493
be771a83
GS
1494(W glob) Something went wrong with the external program(s) used for
1495C<glob> and C<< <*.c> >>. Usually, this means that you supplied a
1496C<glob> pattern that caused the external program to fail and exit with a
1497nonzero status. If the message indicates that the abnormal exit
1498resulted in a coredump, this may also mean that your csh (C shell) is
1499broken. If so, you should change all of the csh-related variables in
1500config.sh: If you have tcsh, make the variables refer to it as if it
1501were csh (e.g. C<full_csh='/usr/bin/tcsh'>); otherwise, make them all
1502empty (except that C<d_csh> should be C<'undef'>) so that Perl will
1503think csh is missing. In either case, after editing config.sh, run
75b44862 1504C<./Configure -S> and rebuild Perl.
e476b1b5 1505
a0d0e21e
LW
1506=item Glob not terminated
1507
1508(F) The lexer saw a left angle bracket in a place where it was expecting
be771a83
GS
1509a term, so it's looking for the corresponding right angle bracket, and
1510not finding it. Chances are you left some needed parentheses out
1511earlier in the line, and you really meant a "less than".
a0d0e21e 1512
6df41af2 1513=item Got an error from DosAllocMem
a0d0e21e 1514
6df41af2
GS
1515(P) An error peculiar to OS/2. Most probably you're using an obsolete
1516version of Perl, and this should not happen anyway.
a0d0e21e
LW
1517
1518=item goto must have label
1519
1520(F) Unlike with "next" or "last", you're not allowed to goto an
1521unspecified destination. See L<perlfunc/goto>.
1522
6df41af2
GS
1523=item %s had compilation errors
1524
1525(F) The final summary message when a C<perl -c> fails.
1526
a0d0e21e
LW
1527=item Had to create %s unexpectedly
1528
be771a83
GS
1529(S internal) A routine asked for a symbol from a symbol table that ought
1530to have existed already, but for some reason it didn't, and had to be
1531created on an emergency basis to prevent a core dump.
a0d0e21e
LW
1532
1533=item Hash %%s missing the % in argument %d of %s()
1534
be771a83
GS
1535(D deprecated) Really old Perl let you omit the % on hash names in some
1536spots. This is now heavily deprecated.
a0d0e21e 1537
6df41af2
GS
1538=item %s has too many errors
1539
1540(F) The parser has given up trying to parse the program after 10 errors.
1541Further error messages would likely be uninformative.
1542
252aa082
JH
1543=item Hexadecimal number > 0xffffffff non-portable
1544
e476b1b5 1545(W portable) The hexadecimal number you specified is larger than 2**32-1
9e24b6e2
JH
1546(4294967295) and therefore non-portable between systems. See
1547L<perlport> for more on portability concerns.
252aa082 1548
8903cb82 1549=item Identifier too long
1550
1551(F) Perl limits identifiers (names for variables, functions, etc.) to
fc36a67e 1552about 250 characters for simple names, and somewhat more for compound
be771a83
GS
1553names (like C<$A::B>). You've exceeded Perl's limits. Future versions
1554of Perl are likely to eliminate these arbitrary limitations.
8903cb82 1555
6df41af2 1556=item Illegal binary digit %s
f675dbe5 1557
6df41af2 1558(F) You used a digit other than 0 or 1 in a binary number.
f675dbe5 1559
6df41af2 1560=item Illegal binary digit %s ignored
a0d0e21e 1561
be771a83
GS
1562(W digit) You may have tried to use a digit other than 0 or 1 in a
1563binary number. Interpretation of the binary number stopped before the
1564offending digit.
a0d0e21e 1565
4fdae800 1566=item Illegal character %s (carriage return)
1567
d5898338 1568(F) Perl normally treats carriage returns in the program text as it
be771a83
GS
1569would any other whitespace, which means you should never see this error
1570when Perl was built using standard options. For some reason, your
1571version of Perl appears to have been built without this support. Talk
1572to your Perl administrator.
4fdae800 1573
a0d0e21e
LW
1574=item Illegal division by zero
1575
be771a83
GS
1576(F) You tried to divide a number by 0. Either something was wrong in
1577your logic, or you need to put a conditional in to guard against
1578meaningless input.
a0d0e21e 1579
6df41af2
GS
1580=item Illegal hexadecimal digit %s ignored
1581
be771a83
GS
1582(W digit) You may have tried to use a character other than 0 - 9 or
1583A - F, a - f in a hexadecimal number. Interpretation of the hexadecimal
1584number stopped before the illegal character.
6df41af2 1585
a0d0e21e
LW
1586=item Illegal modulus zero
1587
be771a83
GS
1588(F) You tried to divide a number by 0 to get the remainder. Most
1589numbers don't take to this kindly.
a0d0e21e 1590
6df41af2 1591=item Illegal number of bits in vec
399388f4 1592
6df41af2
GS
1593(F) The number of bits in vec() (the third argument) must be a power of
1594two from 1 to 32 (or 64, if your platform supports that).
399388f4
GS
1595
1596=item Illegal octal digit %s
a0d0e21e
LW
1597
1598(F) You used an 8 or 9 in a octal number.
1599
399388f4 1600=item Illegal octal digit %s ignored
748a9306 1601
75b44862
GS
1602(W digit) You may have tried to use an 8 or 9 in a octal number.
1603Interpretation of the octal number stopped before the 8 or 9.
748a9306 1604
6df41af2 1605=item Illegal switch in PERL5OPT: %s
6ff81951 1606
6df41af2
GS
1607(X) The PERL5OPT environment variable may only be used to set the
1608following switches: B<-[DIMUdmw]>.
6ff81951 1609
6df41af2 1610=item Ill-formed CRTL environ value "%s"
81e118e0 1611
75b44862 1612(W internal) A warning peculiar to VMS. Perl tried to read the CRTL's
be771a83
GS
1613internal environ array, and encountered an element without the C<=>
1614delimiter used to separate keys from values. The element is ignored.
09bef843 1615
6df41af2 1616=item Ill-formed message in prime_env_iter: |%s|
54310121 1617
be771a83
GS
1618(W internal) A warning peculiar to VMS. Perl tried to read a logical
1619name or CLI symbol definition when preparing to iterate over %ENV, and
1620didn't see the expected delimiter between key and value, so the line was
1621ignored.
54310121 1622
6df41af2 1623=item (in cleanup) %s
9607fc9c 1624
be771a83
GS
1625(W misc) This prefix usually indicates that a DESTROY() method raised
1626the indicated exception. Since destructors are usually called by the
1627system at arbitrary points during execution, and often a vast number of
1628times, the warning is issued only once for any number of failures that
1629would otherwise result in the same message being repeated.
6df41af2 1630
be771a83
GS
1631Failure of user callbacks dispatched using the C<G_KEEPERR> flag could
1632also result in this warning. See L<perlcall/G_KEEPERR>.
9607fc9c 1633
a0d0e21e
LW
1634=item Insecure dependency in %s
1635
8b1a09fc 1636(F) You tried to do something that the tainting mechanism didn't like.
be771a83
GS
1637The tainting mechanism is turned on when you're running setuid or
1638setgid, or when you specify B<-T> to turn it on explicitly. The
1639tainting mechanism labels all data that's derived directly or indirectly
1640from the user, who is considered to be unworthy of your trust. If any
1641such data is used in a "dangerous" operation, you get this error. See
1642L<perlsec> for more information.
a0d0e21e
LW
1643
1644=item Insecure directory in %s
1645
be771a83
GS
1646(F) You can't use system(), exec(), or a piped open in a setuid or
1647setgid script if C<$ENV{PATH}> contains a directory that is writable by
1648the world. See L<perlsec>.
a0d0e21e 1649
62f468fc 1650=item Insecure $ENV{%s} while running %s
a0d0e21e
LW
1651
1652(F) You can't use system(), exec(), or a piped open in a setuid or
62f468fc
MG
1653setgid script if any of C<$ENV{PATH}>, C<$ENV{IFS}>, C<$ENV{CDPATH}>,
1654C<$ENV{ENV}> or C<$ENV{BASH_ENV}> are derived from data supplied (or
a0d0e21e
LW
1655potentially supplied) by the user. The script must set the path to a
1656known value, using trustworthy data. See L<perlsec>.
1657
a7ae9550
GS
1658=item Integer overflow in %s number
1659
75b44862 1660(W overflow) The hexadecimal, octal or binary number you have specified
be771a83
GS
1661either as a literal or as an argument to hex() or oct() is too big for
1662your architecture, and has been converted to a floating point number.
1663On a 32-bit architecture the largest hexadecimal, octal or binary number
9e24b6e2
JH
1664representable without overflow is 0xFFFFFFFF, 037777777777, or
16650b11111111111111111111111111111111 respectively. Note that Perl
1666transparently promotes all numbers to a floating point representation
1667internally--subject to loss of precision errors in subsequent
1668operations.
bbce6d69 1669
79eeca27 1670=item Internal disaster before << HERE in regex m/%s/
6df41af2
GS
1671
1672(P) Something went badly wrong in the regular expression parser.
79eeca27 1673The << HERE shows in the regular expression about where the problem was
b45f050a
JF
1674discovered.
1675
6df41af2 1676
748a9306
LW
1677=item Internal inconsistency in tracking vforks
1678
be771a83
GS
1679(S) A warning peculiar to VMS. Perl keeps track of the number of times
1680you've called C<fork> and C<exec>, to determine whether the current call
1681to C<exec> should affect the current script or a subprocess (see
1682L<perlvms/"exec LIST">). Somehow, this count has become scrambled, so
1683Perl is making a guess and treating this C<exec> as a request to
1684terminate the Perl script and execute the specified command.
748a9306 1685
79eeca27 1686=item Internal urp before << HERE in regex m/%s/
b45f050a 1687
79eeca27 1688(P) Something went badly awry in the regular expression parser. The <<<HERE
b45f050a 1689shows in the regular expression about where the problem was discovered.
a0d0e21e 1690
a0d0e21e 1691
6df41af2
GS
1692=item %s (...) interpreted as function
1693
75b44862 1694(W syntax) You've run afoul of the rule that says that any list operator
be771a83 1695followed by parentheses turns into a function, with all the list
64977eb6 1696operators arguments found inside the parentheses. See
13a2d996 1697L<perlop/Terms and List Operators (Leftward)>.
6df41af2 1698
09bef843
SB
1699=item Invalid %s attribute: %s
1700
1701The indicated attribute for a subroutine or variable was not recognized
1702by Perl or by a user-supplied handler. See L<attributes>.
1703
1704=item Invalid %s attributes: %s
1705
be771a83
GS
1706The indicated attributes for a subroutine or variable were not
1707recognized by Perl or by a user-supplied handler. See L<attributes>.
09bef843 1708
c635e13b 1709=item Invalid conversion in %s: "%s"
1710
be771a83
GS
1711(W printf) Perl does not understand the given format conversion. See
1712L<perlfunc/sprintf>.
c635e13b 1713
6df41af2
GS
1714=item invalid [] range "%s" in regexp
1715
1716(F) The range specified in a character class had a minimum character
78fb8492
JH
1717greater than the maximum character. One possibility is that you
1718forgot the C<{}> from your ending C<\x{}> - C<\x> without the curly
1719braces can go only up to C<ff>. See L<perlre>.
6df41af2 1720
c2e66d9e
GS
1721=item invalid [] range "%s" in transliteration operator
1722
1723(F) The range specified in the tr/// or y/// operator had a minimum
1724character greater than the maximum character. See L<perlop>.
1725
09bef843
SB
1726=item Invalid separator character %s in attribute list
1727
0120eecf 1728(F) Something other than a colon or whitespace was seen between the
be771a83
GS
1729elements of an attribute list. If the previous attribute had a
1730parenthesised parameter list, perhaps that list was terminated too soon.
1731See L<attributes>.
09bef843 1732
96e4d5b1 1733=item Invalid type in pack: '%s'
1734
8903cb82 1735(F) The given character is not a valid pack type. See L<perlfunc/pack>.
be771a83
GS
1736(W pack) The given character is not a valid pack type but used to be
1737silently ignored.
96e4d5b1 1738
1739=item Invalid type in unpack: '%s'
1740
be771a83
GS
1741(F) The given character is not a valid unpack type. See
1742L<perlfunc/unpack>.
75b44862
GS
1743(W unpack) The given character is not a valid unpack type but used to be
1744silently ignored.
96e4d5b1 1745
a0d0e21e
LW
1746=item ioctl is not implemented
1747
1748(F) Your machine apparently doesn't implement ioctl(), which is pretty
1749strange for a machine that supports C.
1750
c289d2f7
JH
1751=item ioctl() on unopened %s
1752
1753(W unopened) You tried ioctl() on a filehandle that was never opened.
1754Check you control flow and number of arguments.
1755
80cbd5ad
JH
1756=item IO::Socket::atmark not implemented on this architecture
1757
1758(F) Your machine doesn't implement the sockatmark() functionality,
1759neither as a system call or an ioctl call (SIOCATMARK).
1760
6ad11d81
JH
1761=item `%s' is not a code reference
1762
1763(W) The second (fourth, sixth, ...) argument of overload::constant needs
1764to be a code reference. Either an anonymous subroutine, or a reference
1765to a subroutine.
1766
1767=item `%s' is not an overloadable type
1768
1769(W) You tried to overload a constant type the overload package is unaware of.
1770
a0d0e21e
LW
1771=item junk on end of regexp
1772
1773(P) The regular expression parser is confused.
1774
1775=item Label not found for "last %s"
1776
be771a83
GS
1777(F) You named a loop to break out of, but you're not currently in a loop
1778of that name, not even if you count where you were called from. See
1779L<perlfunc/last>.
a0d0e21e
LW
1780
1781=item Label not found for "next %s"
1782
1783(F) You named a loop to continue, but you're not currently in a loop of
1784that name, not even if you count where you were called from. See
1785L<perlfunc/last>.
1786
1787=item Label not found for "redo %s"
1788
1789(F) You named a loop to restart, but you're not currently in a loop of
1790that name, not even if you count where you were called from. See
1791L<perlfunc/last>.
1792
85ab1d1d 1793=item leaving effective %s failed
5ff3f7a4 1794
85ab1d1d 1795(F) While under the C<use filetest> pragma, switching the real and
5ff3f7a4
GS
1796effective uids or gids failed.
1797
69282e91 1798=item listen() on closed socket %s
a0d0e21e 1799
be771a83
GS
1800(W closed) You tried to do a listen on a closed socket. Did you forget
1801to check the return value of your socket() call? See
1802L<perlfunc/listen>.
a0d0e21e 1803
9d837945
TM
1804=item lstat() on filehandle %s
1805
1806(W io) You tried to do a lstat on a filehandle. What did you mean
1807by that? lstat() makes sense only on filenames. (Perl did a fstat()
1808instead on the filehandle.)
1809
cd06dffe
GS
1810=item Lvalue subs returning %s not implemented yet
1811
1812(F) Due to limitations in the current implementation, array and hash
be771a83
GS
1813values cannot be returned in subroutines used in lvalue context. See
1814L<perlsub/"Lvalue subroutines">.
cd06dffe 1815
551e1d92 1816=item Lookbehind longer than %d not implemented before << HERE %s
b45f050a
JF
1817
1818(F) There is currently a limit on the length of string which lookbehind can
79eeca27 1819handle. This restriction may be eased in a future release. The << HERE shows in
b45f050a 1820the regular expression about where the problem was discovered.
2e50fd82 1821
6df41af2
GS
1822=item Malformed PERLLIB_PREFIX
1823
1824(F) An error peculiar to OS/2. PERLLIB_PREFIX should be of the form
1825
1826 prefix1;prefix2
1827
1828or
1829
1830 prefix1 prefix2
1831
be771a83
GS
1832with nonempty prefix1 and prefix2. If C<prefix1> is indeed a prefix of
1833a builtin library search path, prefix2 is substituted. The error may
1834appear if components are not found, or are too long. See
fecfaeb8 1835"PERLLIB_PREFIX" in L<perlos2>.
6df41af2 1836
ba210ebe
JH
1837=item Malformed UTF-8 character (%s)
1838
1839Perl detected something that didn't comply with UTF-8 encoding rules.
1840
dea0fc0b
JH
1841=item Malformed UTF-16 surrogate
1842
1843Perl thought it was reading UTF-16 encoded character data but while
1844doing it Perl met a malformed Unicode surrogate.
1845
6df41af2
GS
1846=item %s matches null string many times
1847
1848(W regexp) The pattern you've specified would be an infinite loop if the
be771a83
GS
1849regular expression engine didn't specifically check for that. See
1850L<perlre>.
6df41af2
GS
1851
1852=item % may only be used in unpack
1853
1854(F) You can't pack a string by supplying a checksum, because the
be771a83
GS
1855checksumming process loses information, and you can't go the other way.
1856See L<perlfunc/unpack>.
6df41af2 1857
a0d0e21e
LW
1858=item Method for operation %s not found in package %s during blessing
1859
1860(F) An attempt was made to specify an entry in an overloading table that
e7ea3e70 1861doesn't resolve to a valid subroutine. See L<overload>.
a0d0e21e 1862
3cdd684c
TP
1863=item Method %s not permitted
1864
1865See Server error.
1866
a0d0e21e
LW
1867=item Might be a runaway multi-line %s string starting on line %d
1868
1869(S) An advisory indicating that the previous error may have been caused
1870by a missing delimiter on a string or pattern, because it eventually
1871ended earlier on the current line.
1872
1873=item Misplaced _ in number
1874
d4ced10d
JH
1875(W syntax) An underscore (underbar) in a numeric constant did not
1876separate two digits.
a0d0e21e 1877
4a2d328f 1878=item Missing %sbrace%s on \N{}
423cee85 1879
4a2d328f 1880(F) Wrong syntax of character name literal C<\N{charname}> within
423cee85
JH
1881double-quotish context.
1882
a0d0e21e
LW
1883=item Missing comma after first argument to %s function
1884
1885(F) While certain functions allow you to specify a filehandle or an
1886"indirect object" before the argument list, this ain't one of them.
1887
06eaf0bc
GS
1888=item Missing command in piped open
1889
be771a83
GS
1890(W pipe) You used the C<open(FH, "| command")> or
1891C<open(FH, "command |")> construction, but the command was missing or
1892blank.
06eaf0bc 1893
6df41af2
GS
1894=item Missing name in "my sub"
1895
be771a83
GS
1896(F) The reserved syntax for lexically scoped subroutines requires that
1897they have a name with which they can be found.
6df41af2
GS
1898
1899=item Missing $ on loop variable
1900
be771a83
GS
1901(F) Apparently you've been programming in B<csh> too much. Variables
1902are always mentioned with the $ in Perl, unlike in the shells, where it
1903can vary from one line to the next.
6df41af2 1904
cc507455 1905=item (Missing operator before %s?)
748a9306
LW
1906
1907(S) This is an educated guess made in conjunction with the message "%s
1908found where operator expected". Often the missing operator is a comma.
1909
d98d5fff 1910=item Missing right curly or square bracket
a0d0e21e 1911
be771a83
GS
1912(F) The lexer counted more opening curly or square brackets than closing
1913ones. As a general rule, you'll find it's missing near the place you
1914were last editing.
a0d0e21e 1915
6df41af2
GS
1916=item (Missing semicolon on previous line?)
1917
1918(S) This is an educated guess made in conjunction with the message "%s
1919found where operator expected". Don't automatically put a semicolon on
1920the previous line just because you saw this message.
1921
a0d0e21e
LW
1922=item Modification of a read-only value attempted
1923
1924(F) You tried, directly or indirectly, to change the value of a
5f05dabc 1925constant. You didn't, of course, try "2 = 1", because the compiler
a0d0e21e
LW
1926catches that. But an easy way to do the same thing is:
1927
1928 sub mod { $_[0] = 1 }
1929 mod(2);
1930
1931Another way is to assign to a substr() that's off the end of the string.
1932
c5674021
PDF
1933Yet another way is to assign to a C<foreach> loop I<VAR> when I<VAR>
1934is aliased to a constant in the look I<LIST>:
1935
1936 $x = 1;
1937 foreach my $n ($x, 2) {
1938 $n *= 2; # modifies the $x, but fails on attempt to modify the 2
64977eb6 1939 }
c5674021 1940
7a4340ed 1941=item Modification of non-creatable array value attempted, %s
a0d0e21e
LW
1942
1943(F) You tried to make an array value spring into existence, and the
1944subscript was probably negative, even counting from end of the array
1945backwards.
1946
7a4340ed 1947=item Modification of non-creatable hash value attempted, %s
a0d0e21e 1948
be771a83
GS
1949(P) You tried to make a hash value spring into existence, and it
1950couldn't be created for some peculiar reason.
a0d0e21e
LW
1951
1952=item Module name must be constant
1953
1954(F) Only a bare module name is allowed as the first argument to a "use".
1955
be98fb35 1956=item Module name required with -%c option
6df41af2 1957
be98fb35
GS
1958(F) The C<-M> or C<-m> options say that Perl should load some module, but
1959you omitted the name of the module. Consult L<perlrun> for full details
1960about C<-M> and C<-m>.
6df41af2 1961
a0d0e21e
LW
1962=item msg%s not implemented
1963
1964(F) You don't have System V message IPC on your system.
1965
1966=item Multidimensional syntax %s not supported
1967
75b44862
GS
1968(W syntax) Multidimensional arrays aren't written like C<$foo[1,2,3]>.
1969They're written like C<$foo[1][2][3]>, as in C.
8b1a09fc 1970
6df41af2 1971=item / must be followed by a*, A* or Z*
09bef843 1972
6df41af2 1973(F) You had a pack template indicating a counted-length string,
be771a83
GS
1974Currently the only things that can have their length counted are a*, A*
1975or Z*. See L<perlfunc/pack>.
6df41af2
GS
1976
1977=item / must be followed by a, A or Z
1978
be771a83
GS
1979(F) You had an unpack template indicating a counted-length string, which
1980must be followed by one of the letters a, A or Z to indicate what sort
1981of string is to be unpacked. See L<perlfunc/pack>.
6df41af2
GS
1982
1983=item / must follow a numeric type
1984
be771a83
GS
1985(F) You had an unpack template that contained a '#', but this did not
1986follow some numeric unpack specification. See L<perlfunc/pack>.
6df41af2
GS
1987
1988=item "my sub" not yet implemented
1989
be771a83
GS
1990(F) Lexically scoped subroutines are not yet implemented. Don't try
1991that yet.
6df41af2
GS
1992
1993=item "my" variable %s can't be in a package
1994
be771a83
GS
1995(F) Lexically scoped variables aren't in a package, so it doesn't make
1996sense to try to declare one with a package qualifier on the front. Use
1997local() if you want to localize a package variable.
09bef843 1998
8b1a09fc 1999=item Name "%s::%s" used only once: possible typo
2000
e476b1b5 2001(W once) Typographical errors often show up as unique variable names.
be771a83
GS
2002If you had a good reason for having a unique name, then just mention it
2003again somehow to suppress the message. The C<our> declaration is
77ca0c92 2004provided for this purpose.
a0d0e21e
LW
2005
2006=item Negative length
2007
be771a83
GS
2008(F) You tried to do a read/write/send/recv operation with a buffer
2009length that is less than 0. This is difficult to imagine.
a0d0e21e 2010
79eeca27 2011=item Nested quantifiers before << HERE in regex m/%s/
a0d0e21e 2012
b45f050a 2013(F) You can't quantify a quantifier without intervening parentheses. So
79eeca27 2014things like ** or +* or ?* are illegal. The << HERE shows in the regular
b45f050a 2015expression about where the problem was discovered.
a0d0e21e 2016
be771a83
GS
2017Note, however, that the minimal matching quantifiers, C<*?>, C<+?>, and
2018C<??> appear to be nested quantifiers, but aren't. See L<perlre>.
a0d0e21e 2019
b45f050a 2020
6df41af2 2021=item %s never introduced
a0d0e21e 2022
be771a83
GS
2023(S internal) The symbol in question was declared but somehow went out of
2024scope before it could possibly have been used.
a0d0e21e
LW
2025
2026=item No %s allowed while running setuid
2027
be771a83
GS
2028(F) Certain operations are deemed to be too insecure for a setuid or
2029setgid script to even be allowed to attempt. Generally speaking there
2030will be another way to do what you want that is, if not secure, at least
2031securable. See L<perlsec>.
a0d0e21e
LW
2032
2033=item No B<-e> allowed in setuid scripts
2034
2035(F) A setuid script can't be specified by the user.
2036
2037=item No comma allowed after %s
2038
2039(F) A list operator that has a filehandle or "indirect object" is not
2040allowed to have a comma between that and the following arguments.
2041Otherwise it'd be just another one of the arguments.
2042
0a753a76 2043One possible cause for this is that you expected to have imported a
2044constant to your name space with B<use> or B<import> while no such
2045importing took place, it may for example be that your operating system
2046does not support that particular constant. Hopefully you did use an
2047explicit import list for the constants you expect to see, please see
2048L<perlfunc/use> and L<perlfunc/import>. While an explicit import list
2049would probably have caught this error earlier it naturally does not
2050remedy the fact that your operating system still does not support that
2051constant. Maybe you have a typo in the constants of the symbol import
2052list of B<use> or B<import> or in the constant name at the line where
2053this error was triggered?
2054
748a9306
LW
2055=item No command into which to pipe on command line
2056
be771a83
GS
2057(F) An error peculiar to VMS. Perl handles its own command line
2058redirection, and found a '|' at the end of the command line, so it
2059doesn't know where you want to pipe the output from this command.
748a9306 2060
a0d0e21e
LW
2061=item No DB::DB routine defined
2062
be771a83
GS
2063(F) The currently executing code was compiled with the B<-d> switch, but
2064for some reason the perl5db.pl file (or some facsimile thereof) didn't
2065define a routine to be called at the beginning of each statement. Which
2066is odd, because the file should have been required automatically, and
2067should have blown up the require if it didn't parse right.
a0d0e21e
LW
2068
2069=item No dbm on this machine
2070
2071(P) This is counted as an internal error, because every machine should
5f05dabc 2072supply dbm nowadays, because Perl comes with SDBM. See L<SDBM_File>.
a0d0e21e
LW
2073
2074=item No DBsub routine
2075
2076(F) The currently executing code was compiled with the B<-d> switch,
2077but for some reason the perl5db.pl file (or some facsimile thereof)
2078didn't define a DB::sub routine to be called at the beginning of each
2079ordinary subroutine call.
2080
c47ff5f1 2081=item No error file after 2> or 2>> on command line
748a9306 2082
be771a83
GS
2083(F) An error peculiar to VMS. Perl handles its own command line
2084redirection, and found a '2>' or a '2>>' on the command line, but can't
2085find the name of the file to which to write data destined for stderr.
748a9306 2086
c47ff5f1 2087=item No input file after < on command line
748a9306 2088
be771a83
GS
2089(F) An error peculiar to VMS. Perl handles its own command line
2090redirection, and found a '<' on the command line, but can't find the
2091name of the file from which to read data for stdin.
748a9306 2092
6df41af2
GS
2093=item No #! line
2094
2095(F) The setuid emulator requires that scripts have a well-formed #! line
2096even on machines that don't support the #! construct.
2097
2098=item "no" not allowed in expression
2099
be771a83
GS
2100(F) The "no" keyword is recognized and executed at compile time, and
2101returns no useful value. See L<perlmod>.
6df41af2 2102
c47ff5f1 2103=item No output file after > on command line
748a9306 2104
be771a83
GS
2105(F) An error peculiar to VMS. Perl handles its own command line
2106redirection, and found a lone '>' at the end of the command line, so it
2107doesn't know where you wanted to redirect stdout.
748a9306 2108
c47ff5f1 2109=item No output file after > or >> on command line
748a9306 2110
be771a83
GS
2111(F) An error peculiar to VMS. Perl handles its own command line
2112redirection, and found a '>' or a '>>' on the command line, but can't
2113find the name of the file to which to write data destined for stdout.
748a9306 2114
1ec3e8de
GS
2115=item No package name allowed for variable %s in "our"
2116
be771a83
GS
2117(F) Fully qualified variable names are not allowed in "our"
2118declarations, because that doesn't make much sense under existing
2119semantics. Such syntax is reserved for future extensions.
1ec3e8de 2120
a0d0e21e
LW
2121=item No Perl script found in input
2122
2123(F) You called C<perl -x>, but no line was found in the file beginning
2124with #! and containing the word "perl".
2125
2126=item No setregid available
2127
2128(F) Configure didn't find anything resembling the setregid() call for
2129your system.
2130
2131=item No setreuid available
2132
2133(F) Configure didn't find anything resembling the setreuid() call for
2134your system.
2135
a67e862a 2136=item No space allowed after -%c
a0d0e21e 2137
be771a83
GS
2138(F) The argument to the indicated command line switch must follow
2139immediately after the switch, without intervening spaces.
a0d0e21e 2140
6df41af2
GS
2141=item No %s specified for -%c
2142
2143(F) The indicated command line switch needs a mandatory argument, but
2144you haven't specified one.
2145
2146=item No such pipe open
2147
2148(P) An error peculiar to VMS. The internal routine my_pclose() tried to
be771a83
GS
2149close a pipe which hadn't been opened. This should have been caught
2150earlier as an attempt to close an unopened filehandle.
6df41af2 2151
88e9b055 2152=item No such pseudo-hash field "%s"
57079c46 2153
88e9b055 2154(F) You tried to access an array as a hash, but the field name used is
57079c46
GA
2155not defined. The hash at index 0 should map all valid field names to
2156array indices for that to work.
2157
88e9b055 2158=item No such pseudo-hash field "%s" in variable %s of type %s
f1192cee 2159
be771a83
GS
2160(F) You tried to access a field of a typed variable where the type does
2161not know about the field name. The field names are looked up in the
2162%FIELDS hash in the type package at compile time. The %FIELDS hash is
2163%usually set up with the 'fields' pragma.
f1192cee 2164
a0d0e21e
LW
2165=item No such signal: SIG%s
2166
be771a83
GS
2167(W signal) You specified a signal name as a subscript to %SIG that was
2168not recognized. Say C<kill -l> in your shell to see the valid signal
2169names on your system.
a0d0e21e
LW
2170
2171=item Not a CODE reference
2172
2173(F) Perl was trying to evaluate a reference to a code value (that is, a
2174subroutine), but found a reference to something else instead. You can
be771a83
GS
2175use the ref() function to find out what kind of ref it really was. See
2176also L<perlref>.
a0d0e21e
LW
2177
2178=item Not a format reference
2179
2180(F) I'm not sure how you managed to generate a reference to an anonymous
2181format, but this indicates you did, and that it didn't exist.
2182
2183=item Not a GLOB reference
2184
be771a83
GS
2185(F) Perl was trying to evaluate a reference to a "typeglob" (that is, a
2186symbol table entry that looks like C<*foo>), but found a reference to
2187something else instead. You can use the ref() function to find out what
2188kind of ref it really was. See L<perlref>.
a0d0e21e
LW
2189
2190=item Not a HASH reference
2191
be771a83
GS
2192(F) Perl was trying to evaluate a reference to a hash value, but found a
2193reference to something else instead. You can use the ref() function to
2194find out what kind of ref it really was. See L<perlref>.
a0d0e21e 2195
6df41af2
GS
2196=item Not an ARRAY reference
2197
be771a83
GS
2198(F) Perl was trying to evaluate a reference to an array value, but found
2199a reference to something else instead. You can use the ref() function
2200to find out what kind of ref it really was. See L<perlref>.
6df41af2 2201
a0d0e21e
LW
2202=item Not a perl script
2203
2204(F) The setuid emulator requires that scripts have a well-formed #! line
2205even on machines that don't support the #! construct. The line must
2206mention perl.
2207
2208=item Not a SCALAR reference
2209
be771a83
GS
2210(F) Perl was trying to evaluate a reference to a scalar value, but found
2211a reference to something else instead. You can use the ref() function
2212to find out what kind of ref it really was. See L<perlref>.
a0d0e21e
LW
2213
2214=item Not a subroutine reference
2215
2216(F) Perl was trying to evaluate a reference to a code value (that is, a
2217subroutine), but found a reference to something else instead. You can
be771a83
GS
2218use the ref() function to find out what kind of ref it really was. See
2219also L<perlref>.
a0d0e21e 2220
e7ea3e70 2221=item Not a subroutine reference in overload table
a0d0e21e
LW
2222
2223(F) An attempt was made to specify an entry in an overloading table that
8b1a09fc 2224doesn't somehow point to a valid subroutine. See L<overload>.
a0d0e21e 2225
a0d0e21e
LW
2226=item Not enough arguments for %s
2227
2228(F) The function requires more arguments than you specified.
2229
6df41af2
GS
2230=item Not enough format arguments
2231
be771a83
GS
2232(W syntax) A format specified more picture fields than the next line
2233supplied. See L<perlform>.
6df41af2
GS
2234
2235=item %s: not found
2236
be771a83
GS
2237(A) You've accidentally run your script through the Bourne shell instead
2238of Perl. Check the #! line, or manually feed your script into Perl
2239yourself.
6df41af2
GS
2240
2241=item no UTC offset information; assuming local time is UTC
a0d0e21e 2242
6df41af2
GS
2243(S) A warning peculiar to VMS. Perl was unable to find the local
2244timezone offset, so it's assuming that local system time is equivalent
be771a83
GS
2245to UTC. If it's not, define the logical name
2246F<SYS$TIMEZONE_DIFFERENTIAL> to translate to the number of seconds which
2247need to be added to UTC to get local time.
a0d0e21e
LW
2248
2249=item Null filename used
2250
be771a83
GS
2251(F) You can't require the null filename, especially because on many
2252machines that means the current directory! See L<perlfunc/require>.
a0d0e21e 2253
6df41af2
GS
2254=item NULL OP IN RUN
2255
be771a83
GS
2256(P debugging) Some internal routine called run() with a null opcode
2257pointer.
6df41af2 2258
55497cff 2259=item Null picture in formline
2260
2261(F) The first argument to formline must be a valid format picture
2262specification. It was found to be empty, which probably means you
2263supplied it an uninitialized value. See L<perlform>.
2264
a0d0e21e
LW
2265=item Null realloc
2266
2267(P) An attempt was made to realloc NULL.
2268
2269=item NULL regexp argument
2270
5f05dabc 2271(P) The internal pattern matching routines blew it big time.
a0d0e21e
LW
2272
2273=item NULL regexp parameter
2274
2275(P) The internal pattern matching routines are out of their gourd.
2276
fc36a67e 2277=item Number too long
2278
be771a83
GS
2279(F) Perl limits the representation of decimal numbers in programs to
2280about about 250 characters. You've exceeded that length. Future
2281versions of Perl are likely to eliminate this arbitrary limitation. In
2282the meantime, try using scientific notation (e.g. "1e6" instead of
2283"1_000_000").
fc36a67e 2284
6df41af2
GS
2285=item Octal number in vector unsupported
2286
be771a83
GS
2287(F) Numbers with a leading C<0> are not currently allowed in vectors.
2288The octal number interpretation of such numbers may be supported in a
2289future version.
6df41af2 2290
252aa082
JH
2291=item Octal number > 037777777777 non-portable
2292
75b44862 2293(W portable) The octal number you specified is larger than 2**32-1
be771a83
GS
2294(4294967295) and therefore non-portable between systems. See
2295L<perlport> for more on portability concerns.
252aa082
JH
2296
2297See also L<perlport> for writing portable code.
2298
6ad11d81
JH
2299=item Odd number of arguments for overload::constant
2300
2301(W) The call to overload::constant contained an odd number of arguments.
2302The arguments should come in pairs.
2303
1930e939 2304=item Odd number of elements in hash assignment
a0d0e21e 2305
be771a83
GS
2306(W misc) You specified an odd number of elements to initialize a hash,
2307which is odd, because hashes come in key/value pairs.
a0d0e21e 2308
bbce6d69 2309=item Offset outside string
2310
2311(F) You tried to do a read/write/send/recv operation with an offset
be771a83
GS
2312pointing outside the buffer. This is difficult to imagine. The sole
2313exception to this is that C<sysread()>ing past the buffer will extend
2314the buffer and zero pad the new area.
bbce6d69 2315
9ddeeac9
JH
2316=item -%s on unopened filehandle %s
2317
2318(W unopened) You tried to invoke a file test operator on a filehandle
c289d2f7 2319that isn't open. Check your control flow. See also L<perlfunc/-X>.
9ddeeac9 2320
c289d2f7 2321=item %s() on unopened %s
2dd78f96
JH
2322
2323(W unopened) An I/O operation was attempted on a filehandle that was
2324never initialized. You need to do an open(), a sysopen(), or a socket()
2325call, or call a constructor from the FileHandle package.
2326
a0d0e21e
LW
2327=item oops: oopsAV
2328
e476b1b5 2329(S internal) An internal warning that the grammar is screwed up.
a0d0e21e
LW
2330
2331=item oops: oopsHV
2332
e476b1b5 2333(S internal) An internal warning that the grammar is screwed up.
a0d0e21e 2334
56f7f34b 2335=item Operation `%s': no method found, %s
44a8e56a 2336
be771a83
GS
2337(F) An attempt was made to perform an overloaded operation for which no
2338handler was defined. While some handlers can be autogenerated in terms
2339of other handlers, there is no default handler for any operation, unless
2340C<fallback> overloading key is specified to be true. See L<overload>.
44a8e56a 2341
748a9306
LW
2342=item Operator or semicolon missing before %s
2343
be771a83
GS
2344(S ambiguous) You used a variable or subroutine call where the parser
2345was expecting an operator. The parser has assumed you really meant to
2346use an operator, but this is highly likely to be incorrect. For
2347example, if you say "*foo *foo" it will be interpreted as if you said
2348"*foo * 'foo'".
748a9306 2349
6df41af2
GS
2350=item "our" variable %s redeclared
2351
be771a83
GS
2352(W misc) You seem to have already declared the same global once before
2353in the current lexical scope.
6df41af2 2354
a80b8354
GS
2355=item Out of memory!
2356
2357(X) The malloc() function returned 0, indicating there was insufficient
be771a83
GS
2358remaining memory (or virtual memory) to satisfy the request. Perl has
2359no option but to exit immediately.
a80b8354 2360
6df41af2 2361=item Out of memory during "large" request for %s
a0d0e21e 2362
6df41af2
GS
2363(F) The malloc() function returned 0, indicating there was insufficient
2364remaining memory (or virtual memory) to satisfy the request. However,
be771a83
GS
2365the request was judged large enough (compile-time default is 64K), so a
2366possibility to shut down by trapping this error is granted.
a0d0e21e 2367
1b979e0a 2368=item Out of memory during request for %s
a0d0e21e 2369
be771a83
GS
2370(X|F) The malloc() function returned 0, indicating there was
2371insufficient remaining memory (or virtual memory) to satisfy the
2372request.
eff9c6e2
CS
2373
2374The request was judged to be small, so the possibility to trap it
2375depends on the way perl was compiled. By default it is not trappable.
be771a83
GS
2376However, if compiled for this, Perl may use the contents of C<$^M> as an
2377emergency pool after die()ing with this message. In this case the error
b022d2d2
IZ
2378is trappable I<once>, and the error message will include the line and file
2379where the failed request happened.
55497cff 2380
1b979e0a
IZ
2381=item Out of memory during ridiculously large request
2382
2383(F) You can't allocate more than 2^31+"small amount" bytes. This error
be771a83
GS
2384is most likely to be caused by a typo in the Perl program. e.g.,
2385C<$arr[time]> instead of C<$arr[$time]>.
1b979e0a 2386
6df41af2
GS
2387=item Out of memory for yacc stack
2388
be771a83
GS
2389(F) The yacc parser wanted to grow its stack so it could continue
2390parsing, but realloc() wouldn't give it more memory, virtual or
2391otherwise.
6df41af2
GS
2392
2393=item @ outside of string
2394
2395(F) You had a pack template that specified an absolute position outside
2396the string being unpacked. See L<perlfunc/pack>.
2397
2398=item %s package attribute may clash with future reserved word: %s
2399
be771a83
GS
2400(W reserved) A lowercase attribute name was used that had a
2401package-specific handler. That name might have a meaning to Perl itself
2402some day, even though it doesn't yet. Perhaps you should use a
2403mixed-case attribute name, instead. See L<attributes>.
6df41af2 2404
a0d0e21e
LW
2405=item page overflow
2406
be771a83
GS
2407(W io) A single call to write() produced more lines than can fit on a
2408page. See L<perlform>.
a0d0e21e 2409
6df41af2
GS
2410=item panic: %s
2411
2412(P) An internal error.
2413
a0d0e21e
LW
2414=item panic: ck_grep
2415
2416(P) Failed an internal consistency check trying to compile a grep.
2417
2418=item panic: ck_split
2419
2420(P) Failed an internal consistency check trying to compile a split.
2421
2422=item panic: corrupt saved stack index
2423
be771a83
GS
2424(P) The savestack was requested to restore more localized values than
2425there are in the savestack.
a0d0e21e 2426
810b8aa5
GS
2427=item panic: del_backref
2428
2429(P) Failed an internal consistency check while trying to reset a weak
2430reference.
2431
a0d0e21e
LW
2432=item panic: die %s
2433
2434(P) We popped the context stack to an eval context, and then discovered
2435it wasn't an eval context.
2436
2269b42e 2437=item panic: pp_match
a0d0e21e 2438
be771a83
GS
2439(P) The internal pp_match() routine was called with invalid operational
2440data.
a0d0e21e 2441
a0d0e21e
LW
2442=item panic: do_subst
2443
be771a83
GS
2444(P) The internal pp_subst() routine was called with invalid operational
2445data.
a0d0e21e 2446
2269b42e 2447=item panic: do_trans_%s
a0d0e21e 2448
2269b42e 2449(P) The internal do_trans routines were called with invalid operational
be771a83 2450data.
a0d0e21e 2451
c635e13b 2452=item panic: frexp
2453
2454(P) The library function frexp() failed, making printf("%f") impossible.
2455
a0d0e21e
LW
2456=item panic: goto
2457
2458(P) We popped the context stack to a context with the specified label,
2459and then discovered it wasn't a context we know how to do a goto in.
2460
2461=item panic: INTERPCASEMOD
2462
2463(P) The lexer got into a bad state at a case modifier.
2464
2465=item panic: INTERPCONCAT
2466
2467(P) The lexer got into a bad state parsing a string with brackets.
2468
e446cec8
IZ
2469=item panic: kid popen errno read
2470
2471(F) forked child returned an incomprehensible message about its errno.
2472
a0d0e21e
LW
2473=item panic: last
2474
2475(P) We popped the context stack to a block context, and then discovered
2476it wasn't a block context.
2477
2478=item panic: leave_scope clearsv
2479
be771a83
GS
2480(P) A writable lexical variable became read-only somehow within the
2481scope.
a0d0e21e
LW
2482
2483=item panic: leave_scope inconsistency
2484
2485(P) The savestack probably got out of sync. At least, there was an
2486invalid enum on the top of it.
2487
810b8aa5
GS
2488=item panic: magic_killbackrefs
2489
2490(P) Failed an internal consistency check while trying to reset all weak
2491references to an object.
2492
6df41af2
GS
2493=item panic: malloc
2494
2495(P) Something requested a negative number of bytes of malloc.
2496
a0d0e21e
LW
2497=item panic: mapstart
2498
2499(P) The compiler is screwed up with respect to the map() function.
2500
2501=item panic: null array
2502
2503(P) One of the internal array routines was passed a null AV pointer.
2504
2505=item panic: pad_alloc
2506
2507(P) The compiler got confused about which scratch pad it was allocating
2508and freeing temporaries and lexicals from.
2509
2510=item panic: pad_free curpad
2511
2512(P) The compiler got confused about which scratch pad it was allocating
2513and freeing temporaries and lexicals from.
2514
2515=item panic: pad_free po
2516
2517(P) An invalid scratch pad offset was detected internally.
2518
2519=item panic: pad_reset curpad
2520
2521(P) The compiler got confused about which scratch pad it was allocating
2522and freeing temporaries and lexicals from.
2523
2524=item panic: pad_sv po
2525
2526(P) An invalid scratch pad offset was detected internally.
2527
2528=item panic: pad_swipe curpad
2529
2530(P) The compiler got confused about which scratch pad it was allocating
2531and freeing temporaries and lexicals from.
2532
2533=item panic: pad_swipe po
2534
2535(P) An invalid scratch pad offset was detected internally.
2536
2537=item panic: pp_iter
2538
2539(P) The foreach iterator got called in a non-loop context frame.
2540
2269b42e
JH
2541=item panic: pp_split
2542
2543(P) Something terrible went wrong in setting up for the split.
2544
a0d0e21e
LW
2545=item panic: realloc
2546
2547(P) Something requested a negative number of bytes of realloc.
2548
2549=item panic: restartop
2550
2551(P) Some internal routine requested a goto (or something like it), and
2552didn't supply the destination.
2553
2554=item panic: return
2555
2556(P) We popped the context stack to a subroutine or eval context, and
2557then discovered it wasn't a subroutine or eval context.
2558
2559=item panic: scan_num
2560
2561(P) scan_num() got called on something that wasn't a number.
2562
2563=item panic: sv_insert
2564
2565(P) The sv_insert() routine was told to remove more string than there
2566was string.
2567
2568=item panic: top_env
2569
6224f72b 2570(P) The compiler attempted to do a goto, or something weird like that.
a0d0e21e
LW
2571
2572=item panic: yylex
2573
2574(P) The lexer got into a bad state while processing a case modifier.
2575
dea0fc0b
JH
2576=item panic: utf16_to_utf8: odd bytelen
2577
2578(P) Something tried to call utf16_to_utf8 with an odd (as opposed
64977eb6 2579to even) byte length.
dea0fc0b 2580
7b8d334a 2581=item Parentheses missing around "%s" list
a0d0e21e 2582
e476b1b5 2583(W parenthesis) You said something like
a0d0e21e
LW
2584
2585 my $foo, $bar = @_;
2586
2587when you meant
2588
2589 my ($foo, $bar) = @_;
2590
54884818 2591Remember that "my", "our", and "local" bind tighter than comma.
a0d0e21e 2592
75b44862 2593=item Perl %s required--this is only version %s, stopped
a0d0e21e 2594
be771a83
GS
2595(F) The module in question uses features of a version of Perl more
2596recent than the currently running version. How long has it been since
2597you upgraded, anyway? See L<perlfunc/require>.
a0d0e21e 2598
6df41af2
GS
2599=item PERL_SH_DIR too long
2600
2601(F) An error peculiar to OS/2. PERL_SH_DIR is the directory to find the
fecfaeb8 2602C<sh>-shell in. See "PERL_SH_DIR" in L<perlos2>.
6df41af2
GS
2603
2604=item perl: warning: Setting locale failed.
2605
2606(S) The whole warning message will look something like:
2607
2608 perl: warning: Setting locale failed.
2609 perl: warning: Please check that your locale settings:
2610 LC_ALL = "En_US",
2611 LANG = (unset)
2612 are supported and installed on your system.
2613 perl: warning: Falling back to the standard locale ("C").
2614
2615Exactly what were the failed locale settings varies. In the above the
2616settings were that the LC_ALL was "En_US" and the LANG had no value.
0ea6b70f
JH
2617This error means that Perl detected that you and/or your operating
2618system supplier and/or system administrator have set up the so-called
2619locale system but Perl could not use those settings. This was not
2620dead serious, fortunately: there is a "default locale" called "C" that
2621Perl can and will use, the script will be run. Before you really fix
2622the problem, however, you will get the same error message each time
2623you run Perl. How to really fix the problem can be found in
2624L<perllocale> section B<LOCALE PROBLEMS>.
6df41af2 2625
bccbfa77
NC
2626=item perlio: argument list not closed for layer "%s"
2627
64977eb6 2628(S) When pushing a layer with arguments onto the Perl I/O system you forgot
bccbfa77 2629the ) that closes the argument list. (Layers take care of transforming
64977eb6
NC
2630data between external and internal representations.) Perl stopped parsing
2631the layer list at this point and did not attempt to push this layer.
2632If your program didn't explicitly request the failing operation, it may be
2633the result of the value of the environment variable PERLIO.
2634
2635=item perlio: invalid separator character %s in attribute list
2636
2637(S) When pushing layers onto the Perl I/O system, something other than a
2638colon or whitespace was seen between the elements of an layer list.
2639If the previous attribute had a parenthesised parameter list, perhaps that
2640list was terminated too soon.
bccbfa77 2641
ef0f9817
DD
2642=item perlio: unknown layer "%s"
2643
2644(S) An attempt was made to push an unknown layer onto the Perl I/O
2645system. (Layers take care of transforming data between external and
2646internal representations.) Note that some layers, such as C<mmap>,
2647are not supported in all environments. If your program didn't
2648explicitly request the failing operation, it may be the result of the
2649value of the environment variable PERLIO.
2650
a0d0e21e
LW
2651=item Permission denied
2652
2653(F) The setuid emulator in suidperl decided you were up to no good.
2654
bd3fa61c 2655=item pid %x not a child
748a9306 2656
be771a83
GS
2657(W exec) A warning peculiar to VMS. Waitpid() was asked to wait for a
2658process which isn't a subprocess of the current process. While this is
2659fine from VMS' perspective, it's probably not what you intended.
748a9306 2660
b45f050a
JF
2661=item POSIX syntax [%s] belongs inside character classes
2662
2663(W unsafe) The character class constructs [: :], [= =], and [. .] go
2664I<inside> character classes, the [] are part of the construct, for
2665example: /[012[:alpha:]345]/. Note that [= =] and [. .] are not
2666currently implemented; they are simply placeholders for future
2667extensions and will cause fatal errors.
2668
2669=item POSIX syntax [. .] is reserved for future extensions
2670
2671(F regexp) Within regular expression character classes ([]) the syntax
2672beginning with "[." and ending with ".]" is reserved for future
2673extensions. If you need to represent those character sequences inside
2674a regular expression character class, just quote the square brackets
2675with the backslash: "\[." and ".\]".
2676
2677=item POSIX syntax [= =] is reserved for future extensions
2678
2679(F) Within regular expression character classes ([]) the syntax
2680beginning with "[=" and ending with "=]" is reserved for future
2681extensions. If you need to represent those character sequences inside
2682a regular expression character class, just quote the square brackets
2683with the backslash: "\[=" and "=\]".
2684
2685=item POSIX class [:%s:] unknown
2686
2687(F) The class in the character class [: :] syntax is unknown. See
2688L<perlre>.
2689
a0d0e21e
LW
2690=item POSIX getpgrp can't take an argument
2691
81777298 2692(F) Your system has POSIX getpgrp(), which takes no argument, unlike
a0d0e21e
LW
2693the BSD version, which takes a pid.
2694
bbce6d69 2695=item Possible attempt to put comments in qw() list
2696
e476b1b5 2697(W qw) qw() lists contain items separated by whitespace; as with literal
75b44862 2698strings, comment characters are not ignored, but are instead treated as
be771a83
GS
2699literal data. (You may have used different delimiters than the
2700parentheses shown here; braces are also frequently used.)
bbce6d69 2701
774d564b 2702You probably wrote something like this:
2703
54310121 2704 @list = qw(
774d564b 2705 a # a comment
bbce6d69 2706 b # another comment
774d564b 2707 );
bbce6d69 2708
2709when you should have written this:
2710
774d564b 2711 @list = qw(
54310121 2712 a
2713 b
774d564b 2714 );
2715
2716If you really want comments, build your list the
2717old-fashioned way, with quotes and commas:
2718
2719 @list = (
2720 'a', # a comment
2721 'b', # another comment
2722 );
bbce6d69 2723
2724=item Possible attempt to separate words with commas
2725
be771a83
GS
2726(W qw) qw() lists contain items separated by whitespace; therefore
2727commas aren't needed to separate the items. (You may have used
2728different delimiters than the parentheses shown here; braces are also
2729frequently used.)
bbce6d69 2730
54310121 2731You probably wrote something like this:
bbce6d69 2732
774d564b 2733 qw! a, b, c !;
2734
2735which puts literal commas into some of the list items. Write it without
2736commas if you don't want them to appear in your data:
bbce6d69 2737
774d564b 2738 qw! a b c !;
bbce6d69 2739
a0d0e21e
LW
2740=item Possible memory corruption: %s overflowed 3rd argument
2741
2742(F) An ioctl() or fcntl() returned more than Perl was bargaining for.
2743Perl guesses a reasonable buffer size, but puts a sentinel byte at the
2744end of the buffer just in case. This sentinel byte got clobbered, and
2745Perl assumes that memory is now corrupted. See L<perlfunc/ioctl>.
2746
6df41af2
GS
2747=item Possible Y2K bug: %s
2748
2749(W y2k) You are concatenating the number 19 with another number, which
2750could be a potential Year 2000 problem.
2751
8cd79558
GS
2752=item pragma "attrs" is deprecated, use "sub NAME : ATTRS" instead
2753
a1063b2d 2754(D deprecated) You have written something like this:
8cd79558
GS
2755
2756 sub doit
2757 {
2758 use attrs qw(locked);
2759 }
2760
2761You should use the new declaration syntax instead.
2762
2763 sub doit : locked
2764 {
2765 ...
2766
2767The C<use attrs> pragma is now obsolete, and is only provided for
2768backward-compatibility. See L<perlsub/"Subroutine Attributes">.
2769
a0d0e21e
LW
2770=item Precedence problem: open %s should be open(%s)
2771
e476b1b5 2772(S precedence) The old irregular construct
cb1a09d0 2773
a0d0e21e
LW
2774 open FOO || die;
2775
2776is now misinterpreted as
2777
2778 open(FOO || die);
2779
be771a83
GS
2780because of the strict regularization of Perl 5's grammar into unary and
2781list operators. (The old open was a little of both.) You must put
2782parentheses around the filehandle, or use the new "or" operator instead
2783of "||".
a0d0e21e 2784
3cdd684c
TP
2785=item Premature end of script headers
2786
2787See Server error.
2788
6df41af2
GS
2789=item printf() on closed filehandle %s
2790
be771a83 2791(W closed) The filehandle you're writing to got itself closed sometime
c289d2f7 2792before now. Check your control flow.
6df41af2 2793
9a7dcd9c 2794=item print() on closed filehandle %s
a0d0e21e 2795
be771a83 2796(W closed) The filehandle you're printing on got itself closed sometime
c289d2f7 2797before now. Check your control flow.
a0d0e21e 2798
6df41af2 2799=item Process terminated by SIG%s
a0d0e21e 2800
6df41af2
GS
2801(W) This is a standard message issued by OS/2 applications, while *nix
2802applications die in silence. It is considered a feature of the OS/2
2803port. One can easily disable this by appropriate sighandlers, see
2804L<perlipc/"Signals">. See also "Process terminated by SIGTERM/SIGINT"
fecfaeb8 2805in L<perlos2>.
a0d0e21e 2806
3fe9a6f1 2807=item Prototype mismatch: %s vs %s
4633a7c4 2808
be771a83
GS
2809(S unsafe) The subroutine being declared or defined had previously been
2810declared or defined with a different function prototype.
4633a7c4 2811
79eeca27 2812=item Quantifier in {,} bigger than %d before << HERE in regex m/%s/
9baa0206 2813
b45f050a 2814(F) There is currently a limit to the size of the min and max values of the
79eeca27 2815{min,max} construct. The << HERE shows in the regular expression about where
b45f050a 2816the problem was discovered. See L<perlre>.
9baa0206 2817
551e1d92 2818=item Quantifier unexpected on zero-length expression before << HERE %s
9baa0206 2819
b45f050a
JF
2820(W regexp) You applied a regular expression quantifier in a place where
2821it makes no sense, such as on a zero-width assertion. Try putting the
2822quantifier inside the assertion instead. For example, the way to match
2823"abc" provided that it is followed by three repetitions of "xyz" is
2824C</abc(?=(?:xyz){3})/>, not C</abc(?=xyz){3}/>.
9baa0206 2825
89ea2908
GA
2826=item Range iterator outside integer range
2827
2828(F) One (or both) of the numeric arguments to the range operator ".."
2829are outside the range which can be represented by integers internally.
be771a83
GS
2830One possible workaround is to force Perl to use magical string increment
2831by prepending "0" to your numbers.
89ea2908 2832
9a7dcd9c 2833=item readline() on closed filehandle %s
a0d0e21e 2834
75b44862 2835(W closed) The filehandle you're reading from got itself closed sometime
c289d2f7 2836before now. Check your control flow.
a0d0e21e 2837
6df41af2
GS
2838=item Reallocation too large: %lx
2839
2840(F) You can't allocate more than 64K on an MS-DOS machine.
2841
4ad56ec9
IZ
2842=item realloc() of freed memory ignored
2843
be771a83
GS
2844(S malloc) An internal routine called realloc() on something that had
2845already been freed.
4ad56ec9 2846
a0d0e21e
LW
2847=item Recompile perl with B<-D>DEBUGGING to use B<-D> switch
2848
be771a83
GS
2849(F debugging) You can't use the B<-D> option unless the code to produce
2850the desired output is compiled into Perl, which entails some overhead,
a0d0e21e
LW
2851which is why it's currently left out of your copy.
2852
3e0ccd42 2853=item Recursive inheritance detected in package '%s'
a0d0e21e
LW
2854
2855(F) More than 100 levels of inheritance were used. Probably indicates
2856an unintended loop in your inheritance hierarchy.
2857
7a4340ed 2858=item Recursive inheritance detected while looking for method %s
3e0ccd42 2859
be771a83
GS
2860(F) More than 100 levels of inheritance were encountered while invoking
2861a method. Probably indicates an unintended loop in your inheritance
2862hierarchy.
3e0ccd42 2863
1930e939
TP
2864=item Reference found where even-sized list expected
2865
be771a83
GS
2866(W misc) You gave a single reference where Perl was expecting a list
2867with an even number of elements (for assignment to a hash). This usually
2868means that you used the anon hash constructor when you meant to use
2869parens. In any case, a hash requires key/value B<pairs>.
7b8d334a
GS
2870
2871 %hash = { one => 1, two => 2, }; # WRONG
2872 %hash = [ qw/ an anon array / ]; # WRONG
2873 %hash = ( one => 1, two => 2, ); # right
2874 %hash = qw( one 1 two 2 ); # also fine
2875
810b8aa5
GS
2876=item Reference is already weak
2877
e476b1b5 2878(W misc) You have attempted to weaken a reference that is already weak.
810b8aa5
GS
2879Doing so has no effect.
2880
a0d0e21e
LW
2881=item Reference miscount in sv_replace()
2882
be771a83
GS
2883(W internal) The internal sv_replace() function was handed a new SV with
2884a reference count of other than 1.
a0d0e21e 2885
b1866b2d 2886=item Reference to nonexistent group before << HERE in regex m/%s/
b45f050a
JF
2887
2888(F) You used something like C<\7> in your regular expression, but there are
2889not at least seven sets of capturing parentheses in the expression. If you
2890wanted to have the character with value 7 inserted into the regular expression,
2891prepend a zero to make the number at least two digits: C<\07>
9baa0206 2892
79eeca27 2893The << HERE shows in the regular expression about where the problem was
b45f050a 2894discovered.
9baa0206 2895
a0d0e21e
LW
2896=item regexp memory corruption
2897
2898(P) The regular expression engine got confused by what the regular
2899expression compiler gave it.
2900
b45f050a 2901=item Regexp out of space
a0d0e21e 2902
be771a83
GS
2903(P) A "can't happen" error, because safemalloc() should have caught it
2904earlier.
a0d0e21e 2905
7a95317d
GS
2906=item Repeat count in pack overflows
2907
be771a83
GS
2908(F) You can't specify a repeat count so large that it overflows your
2909signed integers. See L<perlfunc/pack>.
7a95317d
GS
2910
2911=item Repeat count in unpack overflows
2912
be771a83
GS
2913(F) You can't specify a repeat count so large that it overflows your
2914signed integers. See L<perlfunc/unpack>.
7a95317d 2915
a0d0e21e
LW
2916=item Reversed %s= operator
2917
be771a83
GS
2918(W syntax) You wrote your assignment operator backwards. The = must
2919always comes last, to avoid ambiguity with subsequent unary operators.
a0d0e21e
LW
2920
2921=item Runaway format
2922
2923(F) Your format contained the ~~ repeat-until-blank sequence, but it
2924produced 200 lines at once, and the 200th line looked exactly like the
2925199th line. Apparently you didn't arrange for the arguments to exhaust
2926themselves, either by using ^ instead of @ (for scalar variables), or by
2927shifting or popping (for array variables). See L<perlform>.
2928
2929=item Scalar value @%s[%s] better written as $%s[%s]
2930
be771a83
GS
2931(W syntax) You've used an array slice (indicated by @) to select a
2932single element of an array. Generally it's better to ask for a scalar
2933value (indicated by $). The difference is that C<$foo[&bar]> always
2934behaves like a scalar, both when assigning to it and when evaluating its
2935argument, while C<@foo[&bar]> behaves like a list when you assign to it,
2936and provides a list context to its subscript, which can do weird things
2937if you're expecting only one subscript.
a0d0e21e 2938
748a9306 2939On the other hand, if you were actually hoping to treat the array
5f05dabc 2940element as a list, you need to look into how references work, because
748a9306
LW
2941Perl will not magically convert between scalars and lists for you. See
2942L<perlref>.
2943
a6006777 2944=item Scalar value @%s{%s} better written as $%s{%s}
2945
75b44862 2946(W syntax) You've used a hash slice (indicated by @) to select a single
be771a83
GS
2947element of a hash. Generally it's better to ask for a scalar value
2948(indicated by $). The difference is that C<$foo{&bar}> always behaves
2949like a scalar, both when assigning to it and when evaluating its
2950argument, while C<@foo{&bar}> behaves like a list when you assign to it,
2951and provides a list context to its subscript, which can do weird things
2952if you're expecting only one subscript.
2953
2954On the other hand, if you were actually hoping to treat the hash element
2955as a list, you need to look into how references work, because Perl will
2956not magically convert between scalars and lists for you. See
a6006777 2957L<perlref>.
2958
3e2f796a
NIS
2959=item Scalars leaked: %d
2960
2961(P) Something went wrong in Perl's internal bookkeeping of scalars:
2962not all scalar variables were deallocated by the time Perl exited.
2963What this usually indicates is a memory leak, which is of course bad,
2964especially if the Perl program is intended to be long-running.
2965
a0d0e21e
LW
2966=item Script is not setuid/setgid in suidperl
2967
54310121 2968(F) Oddly, the suidperl program was invoked on a script without a setuid
2969or setgid bit set. This doesn't make much sense.
a0d0e21e
LW
2970
2971=item Search pattern not terminated
2972
2973(F) The lexer couldn't find the final delimiter of a // or m{}
2974construct. Remember that bracketing delimiters count nesting level.
fb73857a 2975Missing the leading C<$> from a variable C<$m> may cause this error.
a0d0e21e 2976
9ddeeac9 2977=item %sseek() on unopened filehandle
a0d0e21e 2978
be771a83
GS
2979(W unopened) You tried to use the seek() or sysseek() function on a
2980filehandle that was either never opened or has since been closed.
a0d0e21e
LW
2981
2982=item select not implemented
2983
2984(F) This machine doesn't implement the select() system call.
2985
ae21d580 2986=item Self-ties of arrays and hashes are not supported
68a4a7e4 2987
ae21d580
JH
2988(F) Self-ties are of arrays and hashes are not supported in
2989the current implementation.
68a4a7e4 2990
6df41af2 2991=item Semicolon seems to be missing
a0d0e21e 2992
75b44862
GS
2993(W semicolon) A nearby syntax error was probably caused by a missing
2994semicolon, or possibly some other missing operator, such as a comma.
a0d0e21e
LW
2995
2996=item semi-panic: attempt to dup freed string
2997
be771a83
GS
2998(S internal) The internal newSVsv() routine was called to duplicate a
2999scalar that had previously been marked as free.
a0d0e21e 3000
6df41af2 3001=item sem%s not implemented
a0d0e21e 3002
6df41af2 3003(F) You don't have System V semaphore IPC on your system.
a0d0e21e 3004
69282e91 3005=item send() on closed socket %s
a0d0e21e 3006
be771a83 3007(W closed) The socket you're sending to got itself closed sometime
c289d2f7 3008before now. Check your control flow.
a0d0e21e 3009
79eeca27 3010=item Sequence (? incomplete before << HERE mark in regex m/%s/
7b8d334a 3011
79eeca27 3012(F) A regular expression ended with an incomplete extension (?. The <<<HERE
b45f050a 3013shows in the regular expression about where the problem was discovered. See
be771a83 3014L<perlre>.
1b1626e4 3015
551e1d92 3016=item Sequence (?{...}) not terminated or not {}-balanced in %s
b45f050a
JF
3017
3018(F) If the contents of a (?{...}) clause contains braces, they must balance
3019for Perl to properly detect the end of the clause. See L<perlre>.
a0d0e21e 3020
551e1d92 3021=item Sequence (?%s...) not implemented before << HERE mark in %s
a0d0e21e 3022
b45f050a 3023(F) A proposed regular expression extension has the character reserved but
79eeca27 3024has not yet been written. The << HERE shows in the regular expression about
b45f050a
JF
3025where the problem was discovered. See L<perlre>.
3026
551e1d92 3027=item Sequence (?%s...) not recognized before << HERE mark in %s
a0d0e21e
LW
3028
3029(F) You used a regular expression extension that doesn't make sense.
79eeca27 3030The << HERE shows in the regular expression about
64977eb6 3031where the problem was discovered.
a0d0e21e
LW
3032See L<perlre>.
3033
b45f050a 3034=item Sequence (?#... not terminated in regex m/%s/
6df41af2
GS
3035
3036(F) A regular expression comment must be terminated by a closing
3037parenthesis. Embedded parentheses aren't allowed. See L<perlre>.
3038
3039=item 500 Server error
3040
3041See Server error.
3042
a5f75d66
AD
3043=item Server error
3044
3cdd684c 3045This is the error message generally seen in a browser window when trying
be771a83
GS
3046to run a CGI program (including SSI) over the web. The actual error text
3047varies widely from server to server. The most frequently-seen variants
3048are "500 Server error", "Method (something) not permitted", "Document
3049contains no data", "Premature end of script headers", and "Did not
3050produce a valid header".
9607fc9c 3051
3052B<This is a CGI error, not a Perl error>.
3053
be771a83
GS
3054You need to make sure your script is executable, is accessible by the
3055user CGI is running the script under (which is probably not the user
3056account you tested it under), does not rely on any environment variables
3057(like PATH) from the user it isn't running under, and isn't in a
3058location where the CGI server can't find it, basically, more or less.
3059Please see the following for more information:
9607fc9c 3060
be94a901
GS
3061 http://www.perl.com/CPAN/doc/FAQs/cgi/idiots-guide.html
3062 http://www.perl.com/CPAN/doc/FAQs/cgi/perl-cgi-faq.html
9607fc9c 3063 ftp://rtfm.mit.edu/pub/usenet/news.answers/www/cgi-faq
3064 http://hoohoo.ncsa.uiuc.edu/cgi/interface.html
3065 http://www-genome.wi.mit.edu/WWW/faqs/www-security-faq.html
a5f75d66 3066
be94a901
GS
3067You should also look at L<perlfaq9>.
3068
a0d0e21e
LW
3069=item setegid() not implemented
3070
be771a83
GS
3071(F) You tried to assign to C<$)>, and your operating system doesn't
3072support the setegid() system call (or equivalent), or at least Configure
3073didn't think so.
a0d0e21e
LW
3074
3075=item seteuid() not implemented
3076
be771a83
GS
3077(F) You tried to assign to C<< $> >>, and your operating system doesn't
3078support the seteuid() system call (or equivalent), or at least Configure
3079didn't think so.
a0d0e21e 3080
81777298
GS
3081=item setpgrp can't take arguments
3082
be771a83
GS
3083(F) Your system has the setpgrp() from BSD 4.2, which takes no
3084arguments, unlike POSIX setpgid(), which takes a process ID and process
3085group ID.
81777298 3086
a0d0e21e
LW
3087=item setrgid() not implemented
3088
be771a83
GS
3089(F) You tried to assign to C<$(>, and your operating system doesn't
3090support the setrgid() system call (or equivalent), or at least Configure
3091didn't think so.
a0d0e21e
LW
3092
3093=item setruid() not implemented
3094
be771a83
GS
3095(F) You tried to assign to C<$<>, and your operating system doesn't
3096support the setruid() system call (or equivalent), or at least Configure
3097didn't think so.
a0d0e21e 3098
6df41af2
GS
3099=item setsockopt() on closed socket %s
3100
be771a83
GS
3101(W closed) You tried to set a socket option on a closed socket. Did you
3102forget to check the return value of your socket() call? See
6df41af2
GS
3103L<perlfunc/setsockopt>.
3104
a0d0e21e
LW
3105=item Setuid/gid script is writable by world
3106
be771a83
GS
3107(F) The setuid emulator won't run a script that is writable by the
3108world, because the world might have written on it already.
a0d0e21e
LW
3109
3110=item shm%s not implemented
3111
3112(F) You don't have System V shared memory IPC on your system.
3113
6df41af2
GS
3114=item <> should be quotes
3115
3116(F) You wrote C<< require <file> >> when you should have written
3117C<require 'file'>.
3118
3119=item /%s/ should probably be written as "%s"
3120
3121(W syntax) You have used a pattern where Perl expected to find a string,
be771a83
GS
3122as in the first argument to C<join>. Perl will treat the true or false
3123result of matching the pattern against $_ as the string, which is
3124probably not what you had in mind.
6df41af2 3125
69282e91 3126=item shutdown() on closed socket %s
a0d0e21e 3127
75b44862
GS
3128(W closed) You tried to do a shutdown on a closed socket. Seems a bit
3129superfluous.
a0d0e21e 3130
f86702cc 3131=item SIG%s handler "%s" not defined
a0d0e21e 3132
be771a83
GS
3133(W signal) The signal handler named in %SIG doesn't, in fact, exist.
3134Perhaps you put it into the wrong package?
a0d0e21e
LW
3135
3136=item sort is now a reserved word
3137
3138(F) An ancient error message that almost nobody ever runs into anymore.
3139But before sort was a keyword, people sometimes used it as a filehandle.
3140
3141=item Sort subroutine didn't return a numeric value
3142
3143(F) A sort comparison routine must return a number. You probably blew
c47ff5f1 3144it by not using C<< <=> >> or C<cmp>, or by not using them correctly.
a0d0e21e
LW
3145See L<perlfunc/sort>.
3146
3147=item Sort subroutine didn't return single value
3148
3149(F) A sort comparison subroutine may not return a list value with more
3150or less than one element. See L<perlfunc/sort>.
3151
3152=item Split loop
3153
be771a83
GS
3154(P) The split was looping infinitely. (Obviously, a split shouldn't
3155iterate more times than there are characters of input, which is what
3156happened.) See L<perlfunc/split>.
a0d0e21e 3157
a0d0e21e
LW
3158=item Statement unlikely to be reached
3159
be771a83
GS
3160(W exec) You did an exec() with some statement after it other than a
3161die(). This is almost always an error, because exec() never returns
3162unless there was a failure. You probably wanted to use system()
3163instead, which does return. To suppress this warning, put the exec() in
3164a block by itself.
a0d0e21e 3165
9ddeeac9 3166=item stat() on unopened filehandle %s
6df41af2 3167
355b1299
JH
3168(W unopened) You tried to use the stat() function on a filehandle that
3169was either never opened or has since been closed.
6df41af2 3170
7a4340ed 3171=item Stub found while resolving method `%s' overloading %s
e7ea3e70 3172
be771a83
GS
3173(P) Overloading resolution over @ISA tree may be broken by importation
3174stubs. Stubs should never be implicitly created, but explicit calls to
3175C<can> may break this.
e7ea3e70 3176
a0d0e21e
LW
3177=item Subroutine %s redefined
3178
e476b1b5 3179(W redefine) You redefined a subroutine. To suppress this warning, say
a0d0e21e
LW
3180
3181 {
4438c4b7 3182 no warnings;
a0d0e21e
LW
3183 eval "sub name { ... }";
3184 }
3185
3186=item Substitution loop
3187
be771a83
GS
3188(P) The substitution was looping infinitely. (Obviously, a substitution
3189shouldn't iterate more times than there are characters of input, which
3190is what happened.) See the discussion of substitution in
5f05dabc 3191L<perlop/"Quote and Quote-like Operators">.
a0d0e21e
LW
3192
3193=item Substitution pattern not terminated
3194
3195(F) The lexer couldn't find the interior delimiter of a s/// or s{}{}
3196construct. Remember that bracketing delimiters count nesting level.
fb73857a 3197Missing the leading C<$> from variable C<$s> may cause this error.
a0d0e21e
LW
3198
3199=item Substitution replacement not terminated
3200
3201(F) The lexer couldn't find the final delimiter of a s/// or s{}{}
3202construct. Remember that bracketing delimiters count nesting level.
fb73857a 3203Missing the leading C<$> from variable C<$s> may cause this error.
a0d0e21e
LW
3204
3205=item substr outside of string
3206
be771a83
GS
3207(W substr),(F) You tried to reference a substr() that pointed outside of
3208a string. That is, the absolute value of the offset was larger than the
3209length of the string. See L<perlfunc/substr>. This warning is fatal if
3210substr is used in an lvalue context (as the left hand side of an
3211assignment or as a subroutine argument for example).
a0d0e21e 3212
f86702cc 3213=item suidperl is no longer needed since %s
a0d0e21e 3214
be771a83
GS
3215(F) Your Perl was compiled with B<-D>SETUID_SCRIPTS_ARE_SECURE_NOW, but
3216a version of the setuid emulator somehow got run anyway.
a0d0e21e 3217
551e1d92 3218=item Switch (?(condition)... contains too many branches before << HE%s
b45f050a
JF
3219
3220(F) A (?(condition)if-clause|else-clause) construct can have at most two
3221branches (the if-clause and the else-clause). If you want one or both to
3222contain alternation, such as using C<this|that|other>, enclose it in
3223clustering parentheses:
3224
3225 (?(condition)(?:this|that|other)|else-clause)
3226
79eeca27 3227The << HERE shows in the regular expression about where the problem was
b45f050a
JF
3228discovered. See L<perlre>.
3229
79eeca27 3230=item Switch condition not recognized before << HERE in regex m/%s/
b45f050a
JF
3231
3232(F) If the argument to the (?(...)if-clause|else-clause) construct is a
79eeca27 3233number, it can be only a number. The << HERE shows in the regular expression
b45f050a
JF
3234about where the problem was discovered. See L<perlre>.
3235
85ab1d1d
JH
3236=item switching effective %s is not implemented
3237
be771a83
GS
3238(F) While under the C<use filetest> pragma, we cannot switch the real
3239and effective uids or gids.
85ab1d1d 3240
a0d0e21e
LW
3241=item syntax error
3242
3243(F) Probably means you had a syntax error. Common reasons include:
3244
3245 A keyword is misspelled.
3246 A semicolon is missing.
3247 A comma is missing.
3248 An opening or closing parenthesis is missing.
3249 An opening or closing brace is missing.
3250 A closing quote is missing.
3251
3252Often there will be another error message associated with the syntax
3253error giving more information. (Sometimes it helps to turn on B<-w>.)
3254The error message itself often tells you where it was in the line when
3255it decided to give up. Sometimes the actual error is several tokens
5f05dabc 3256before this, because Perl is good at understanding random input.
a0d0e21e
LW
3257Occasionally the line number may be misleading, and once in a blue moon
3258the only way to figure out what's triggering the error is to call
3259C<perl -c> repeatedly, chopping away half the program each time to see
be771a83
GS
3260if the error went away. Sort of the cybernetic version of S<20
3261questions>.
a0d0e21e 3262
cb1a09d0
AD
3263=item syntax error at line %d: `%s' unexpected
3264
be771a83
GS
3265(A) You've accidentally run your script through the Bourne shell instead
3266of Perl. Check the #! line, or manually feed your script into Perl
3267yourself.
cb1a09d0 3268
6df41af2
GS
3269=item %s syntax OK
3270
3271(F) The final summary message when a C<perl -c> succeeds.
3272
6087ac44 3273=item System V %s is not implemented on this machine
a0d0e21e 3274
6087ac44
JH
3275(F) You tried to do something with a function beginning with "sem",
3276"shm", or "msg" but that System V IPC is not implemented in your
3277machine. In some machines the functionality can exist but be
3278unconfigured. Consult your system support.
a0d0e21e 3279
69282e91 3280=item syswrite() on closed filehandle %s
a0d0e21e 3281
be771a83 3282(W closed) The filehandle you're writing to got itself closed sometime
c289d2f7 3283before now. Check your control flow.
a0d0e21e 3284
fc36a67e 3285=item Target of goto is too deeply nested
3286
be771a83
GS
3287(F) You tried to use C<goto> to reach a label that was too deeply nested
3288for Perl to reach. Perl is doing you a favor by refusing.
fc36a67e 3289
9ddeeac9 3290=item tell() on unopened filehandle
a0d0e21e 3291
be771a83
GS
3292(W unopened) You tried to use the tell() function on a filehandle that
3293was either never opened or has since been closed.
a0d0e21e 3294
a0d0e21e
LW
3295=item That use of $[ is unsupported
3296
be771a83
GS
3297(F) Assignment to C<$[> is now strictly circumscribed, and interpreted
3298as a compiler directive. You may say only one of
a0d0e21e
LW
3299
3300 $[ = 0;
3301 $[ = 1;
3302 ...
3303 local $[ = 0;
3304 local $[ = 1;
3305 ...
3306
be771a83
GS
3307This is to prevent the problem of one module changing the array base out
3308from under another module inadvertently. See L<perlvar/$[>.
a0d0e21e 3309
f86702cc 3310=item The crypt() function is unimplemented due to excessive paranoia
a0d0e21e
LW
3311
3312(F) Configure couldn't find the crypt() function on your machine,
3313probably because your vendor didn't supply it, probably because they
8b1a09fc 3314think the U.S. Government thinks it's a secret, or at least that they
a0d0e21e
LW
3315will continue to pretend that it is. And if you quote me on that, I
3316will deny it.
3317
6df41af2
GS
3318=item The %s function is unimplemented
3319
3320The function indicated isn't implemented on this architecture, according
3321to the probings of Configure.
3322
5e1c7ca2 3323=item The stat preceding %s wasn't an lstat
a0d0e21e 3324
be771a83
GS
3325(F) It makes no sense to test the current stat buffer for symbolic
3326linkhood if the last stat that wrote to the stat buffer already went
3327past the symlink to get to the real file. Use an actual filename
3328instead.
a0d0e21e 3329
437784d6 3330=item This Perl can't reset CRTL environ elements (%s)
f675dbe5
CB
3331
3332=item This Perl can't set CRTL environ elements (%s=%s)
3333
75b44862 3334(W internal) Warnings peculiar to VMS. You tried to change or delete an
be771a83
GS
3335element of the CRTL's internal environ array, but your copy of Perl
3336wasn't built with a CRTL that contained the setenv() function. You'll
3337need to rebuild Perl with a CRTL that does, or redefine
3338F<PERL_ENV_TABLES> (see L<perlvms>) so that the environ array isn't the
3339target of the change to
f675dbe5
CB
3340%ENV which produced the warning.
3341
a0d0e21e
LW
3342=item times not implemented
3343
be771a83
GS
3344(F) Your version of the C library apparently doesn't do times(). I
3345suspect you're not running on Unix.
a0d0e21e
LW
3346
3347=item Too few args to syscall
3348
3349(F) There has to be at least one argument to syscall() to specify the
3350system call to call, silly dilly.
3351
9607fc9c 3352=item Too late for "B<-T>" option
3353
3354(X) The #! line (or local equivalent) in a Perl script contains the
8cc95fdb 3355B<-T> option, but Perl was not invoked with B<-T> in its command line.
3356This is an error because, by the time Perl discovers a B<-T> in a
3357script, it's too late to properly taint everything from the environment.
3358So Perl gives up.
f86702cc 3359
9607fc9c 3360If the Perl script is being executed as a command using the #!
be771a83
GS
3361mechanism (or its local equivalent), this error can usually be fixed by
3362editing the #! line so that the B<-T> option is a part of Perl's first
3363argument: e.g. change C<perl -n -T> to C<perl -T -n>.
f86702cc 3364