=item Applying %s to %s will act on scalar(%s)
-(W) The pattern match (//), substitution (s///), and translation (tr///)
+(W) The pattern match (//), substitution (s///), and transliteration (tr///)
operators work on scalar values. If you apply one of them to an array
or a hash, it will convert the array or hash to a scalar value -- the
length of an array, or the population info of a hash -- and then work on
subroutine identifier, in curly braces or to the left of the "=>" symbol.
Perhaps you need to predeclare a subroutine?
+=item Bareword "%s" refers to nonexistent package
+
+(W) You used a qualified bareword of the form C<Foo::>, but
+the compiler saw no other uses of that namespace before that point.
+Perhaps you need to predeclare a package?
+
=item BEGIN failed--compilation aborted
(F) An untrapped exception was raised while executing a BEGIN subroutine.
you should be calling it out of only an AUTOLOAD routine anyway. See
L<perlfunc/goto>.
+=item Can't goto subroutine from an eval-string
+
+(F) The "goto subroutine" call can't be used to jump out of an eval "string".
+(You can use it to jump out of an eval {BLOCK}, but you probably don't want to.)
+
=item Can't localize through a reference
(F) You said something like C<local $$ref>, which Perl can't currently
(F) List assignment to %ENV is not supported on some systems, notably VMS.
-=item Can't mktemp()
-
-(F) The mktemp() routine failed for some reason while trying to process
-a B<-e> switch. Maybe your /tmp partition is full, or clobbered.
-
=item Can't modify %s in %s
(F) You aren't allowed to assign to the item indicated, or otherwise try to
of upgradability. Upgrading to undef indicates an error in the
code calling sv_upgrade.
+=item Can't use %%! because Errno.pm is not available
+
+(F) The first time the %! hash is used, perl automatically loads the
+Errno.pm module. The Errno module is expected to tie the %! hash to
+provide symbolic names for C<$!> errno values.
+
=item Can't use "my %s" in sort comparison
(F) The global variables $a and $b are reserved for sort comparisons.
subscript. But to the left of the brackets was an expression that
didn't look like an array reference, or anything else subscriptable.
-=item Can't write to temp file for B<-e>: %s
-
-(F) The write routine failed for some reason while trying to process
-a B<-e> switch. Maybe your /tmp partition is full, or clobbered.
-
=item Can't x= to read-only value
(F) You tried to repeat a constant value (often the undefined value) with
an assignment operator, which implies modifying the value itself.
Perhaps you need to copy the value to a temporary, and repeat that.
-=item Cannot open temporary file
+=item Cannot find an opnumber for "%s"
-(F) The create routine failed for some reason while trying to process
-a B<-e> switch. Maybe your /tmp partition is full, or clobbered.
+(F) A string of a form C<CORE::word> was given to prototype(), but
+there is no builtin with the name C<word>.
=item Cannot resolve method `%s' overloading `%s' in package `%s'
opposed to a subroutine reference): no such method callable via the
package. If method name is C<???>, this is an internal error.
+=item Character class syntax [. .] is reserved for future extensions
+
+(W) Within regular expression character classes ([]) the syntax beginning
+with "[." and ending with ".]" is reserved for future extensions.
+If you need to represent those character sequences inside a regular
+expression character class, just quote the square brackets with the
+backslash: "\[." and ".\]".
+
+=item Character class syntax [: :] is reserved for future extensions
+
+(W) Within regular expression character classes ([]) the syntax beginning
+with "[:" and ending with ":]" is reserved for future extensions.
+If you need to represent those character sequences inside a regular
+expression character class, just quote the square brackets with the
+backslash: "\[:" and ":\]".
+
+=item Character class syntax [= =] is reserved for future extensions
+
+(W) Within regular expression character classes ([]) the syntax
+beginning with "[=" and ending with "=]" is reserved for future extensions.
+If you need to represent those character sequences inside a regular
+expression character class, just quote the square brackets with the
+backslash: "\[=" and "=\]".
+
=item chmod: mode argument is missing initial 0
(W) A novice will sometimes say
(W) You are exiting a substitution by unconventional means, such as
a return, a goto, or a loop control statement.
+=item Explicit blessing to '' (assuming package main)
+
+(W) You are blessing a reference to a zero length string. This has
+the effect of blessing the reference into the package main. This is
+usually not what you want. Consider providing a default target
+package, e.g. bless($ref, $p or 'MyPackage');
+
=item Fatal VMS error at %s, line %d
(P) An error peculiar to VMS. Something untoward happened in a VMS system
(W) You may have tried to use an 8 or 9 in a octal number. Interpretation
of the octal number stopped before the 8 or 9.
+=item Illegal hex digit ignored
+
+(W) You may have tried to use a character other than 0 - 9 or A - F in a
+hexadecimal number. Interpretation of the hexadecimal number stopped
+before the illegal character.
+
=item Illegal switch in PERL5OPT: %s
(X) The PERL5OPT environment variable may only be used to set the
Perl are likely to eliminate this arbitrary limitation. In the meantime,
try using scientific notation (e.g. "1e6" instead of "1_000_000").
-=item Odd number of elements in hash list
+=item Odd number of elements in hash assignment
-(S) You specified an odd number of elements to a hash list, which is odd,
-because hash lists come in key/value pairs.
+(S) You specified an odd number of elements to initialize a hash, which
+is odd, because hashes come in key/value pairs.
=item Offset outside string
(P) The lexer got into a bad state while processing a case modifier.
-=item Pareneses missing around "%s" list
+=item Parentheses missing around "%s" list
(W) You said something like
(W) qw() lists contain items separated by whitespace; as with literal
strings, comment characters are not ignored, but are instead treated
as literal data. (You may have used different delimiters than the
-exclamation marks parentheses shown here; braces are also frequently
-used.)
+parentheses shown here; braces are also frequently used.)
You probably wrote something like this:
(F) More than 100 levels of inheritance were used. Probably indicates
an unintended loop in your inheritance hierarchy.
+=item Reference found where even-sized list expected
+
+(W) You gave a single reference where Perl was expecting a list with
+an even number of elements (for assignment to a hash). This
+usually means that you used the anon hash constructor when you meant
+to use parens. In any case, a hash requires key/value B<pairs>.
+
+ %hash = { one => 1, two => 2, }; # WRONG
+ %hash = [ qw/ an anon array / ]; # WRONG
+ %hash = ( one => 1, two => 2, ); # right
+ %hash = qw( one 1 two 2 ); # also fine
+
=item Reference miscount in sv_replace()
(W) The internal sv_replace() function was handed a new SV with a
Check your logic flow.
=item Sequence (? incomplete
+
(F) A regular expression ended with an incomplete extension (?.
See L<perlre>.
(F) The regular expression ends with an unbackslashed backslash. Backslash
it. See L<perlre>.
-=item Translation pattern not terminated
+=item Transliteration pattern not terminated
(F) The lexer couldn't find the interior delimiter of a tr/// or tr[][]
or y/// or y[][] construct. Missing the leading C<$> from variables
C<$tr> or C<$y> may cause this error.
-=item Translation replacement not terminated
+=item Transliteration replacement not terminated
(F) The lexer couldn't find the final delimiter of a tr/// or tr[][]
construct.
(F) The format indicated doesn't seem to exist. Perhaps it's really in
another package? See L<perlform>.
+=item Undefined value assigned to typeglob
+
+(W) An undefined value was assigned to a typeglob, a la C<*foo = undef>.
+This does nothing. It's possible that you really mean C<undef *foo>.
+
=item unexec of %s into %s failed!
(F) The unexec() routine failed for some reason. See your local FSF
=item Unsupported function %s
-(F) This machines doesn't implement the indicated function, apparently.
+(F) This machine doesn't implement the indicated function, apparently.
At least, Configure doesn't think so.
=item Unsupported socket function "%s" called
(D) As an (ahem) accidental feature, C<AUTOLOAD> subroutines are looked
up as methods (using the C<@ISA> hierarchy) even when the subroutines to
be autoloaded were called as plain functions (e.g. C<Foo::bar()>), not
-as methods (e.g. C<Foo->bar()> or C<$obj->bar()>).
+as methods (e.g. C<Foo-E<gt>bar()> or C<$obj-E<gt>bar()>).
This bug will be rectified in Perl 5.005, which will use method lookup
only for methods' C<AUTOLOAD>s. However, there is a significant base
In code that currently says C<use AutoLoader; @ISA = qw(AutoLoader);> you
should remove AutoLoader from @ISA and change C<use AutoLoader;> to
-C<C<use AutoLoader 'AUTOLOAD';>.
+C<use AutoLoader 'AUTOLOAD';>.
=item Use of %s is deprecated
of Perl. Check the #! line, or manually feed your script into
Perl yourself.
+=item perl: warning: Setting locale failed.
+
+(S) The whole warning message will look something like:
+
+ perl: warning: Setting locale failed.
+ perl: warning: Please check that your locale settings:
+ LC_ALL = "En_US",
+ LANG = (unset)
+ are supported and installed on your system.
+ perl: warning: Falling back to the standard locale ("C").
+
+Exactly what were the failed locale settings varies. In the above the
+settings were that the LC_ALL was "En_US" and the LANG had no value.
+This error means that Perl detected that you and/or your system
+administrator have set up the so-called variable system but Perl could
+not use those settings. This was not dead serious, fortunately: there
+is a "default locale" called "C" that Perl can and will use, the
+script will be run. Before you really fix the problem, however, you
+will get the same error message each time you run Perl. How to really
+fix the problem can be found in L<perllocale> section B<LOCALE PROBLEMS>.
+
=item Warning: something's wrong
(W) You passed warn() an empty string (the equivalent of C<warn "">) or
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