Some of these messages are generic. Spots that vary are denoted with a %s,
just as in a printf format. Note that some messages start with a %s!
-The symbols C<"%-?@> sort before the letters, while C<[> and C<\> sort after.
+The symbols C<"%(-?@> sort before the letters, while C<[> and C<\> sort after.
=over 4
=item "my" variable %s masks earlier declaration in same scope
-(S) A lexical variable has been redeclared in the same scope, effectively
+(W) A lexical variable has been redeclared in the same scope, effectively
eliminating all access to the previous instance. This is almost always
a typographical error. Note that the earlier variable will still exist
until the end of the scope or until all closure referents to it are
instead of Perl. Check the #! line, or manually feed your script
into Perl yourself.
+=item (Missing semicolon on previous line?)
+
+(S) This is an educated guess made in conjunction with the message "%s
+found where operator expected". Don't automatically put a semicolon on
+the previous line just because you saw this message.
+
=item B<-P> not allowed for setuid/setgid script
(F) The script would have to be opened by the C preprocessor by name,
(F) Perl can't peek at the stdio buffer of filehandles when it doesn't
know about your kind of stdio. You'll have to use a filename instead.
+=item C<-p> destination: %s
+
+(F) An error occurred during the implicit output invoked by the C<-p>
+command-line switch. (This output goes to STDOUT unless you've
+redirected it with select().)
+
=item 500 Server error
See Server error.
(X) You can't allocate more than 64K on an MS-DOS machine.
-=item Allocation too large
-
-(F) You can't allocate more than 2^31+"small amount" bytes.
-
=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
SvREFCNT_inc() was called too few times, or that the SV was mortalized
when it shouldn't have been, or that memory has been corrupted.
+=item Attempt to pack pointer to temporary value
+
+(W) You tried to pass a temporary value (like the result of a
+function, or a computed expression) to the "p" pack() template. This
+means the result contains a pointer to a location that could become
+invalid anytime, even before the end of the current statement. Use
+literals or global values as arguments to the "p" pack() template to
+avoid this warning.
+
=item Attempt to use reference as lvalue in substr
(W) You supplied a reference as the first argument to substr() used
(P) One of the internal hash routines was passed a null HV pointer.
+=item Bad index while coercing array into hash
+
+(F) A field name of a typed variable was looked up in the %FIELDS
+hash, but the index found was not legal, i.e. less than 1.
+
+=item Bad index while coercing array into hash
+
+(F) The index looked up in the hash found as 0'th element of the array
+is not legal. Index values must be at 1 or greater.
+
=item Bad name after %s::
(F) You started to name a symbol by using a package prefix, and then didn't
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.
occurs if you tried to jump out of a sort() block or subroutine, which
is a no-no. See L<perlfunc/goto>.
+=item Can't "goto" into the middle of a foreach loop
+
+(F) A "goto" statement was executed to jump into the middle of a
+foreach loop. You can't get there from here. See L<perlfunc/goto>.
+
=item Can't "last" outside a block
(F) A "last" statement was executed to break out of the current block,
(F) Certain types of SVs, in particular real symbol table entries
(typeglobs), can't be forced to stop being what they are.
+=item Can't coerce array into hash
+
+(F) You used an array where a hash was expected, but the array has no
+information on how to map from keys to array indices. You can do that
+only with arrays that have a hash reference at index 0.
+
=item Can't create pipe mailbox
(P) An error peculiar to VMS. The process is suffering from exhausted quotas
=item Can't execute %s
+(F) You used the B<-S> switch, but the copies of the script to execute found
+in the PATH did not have correct permissions.
+
+=item Can't find %s on PATH, '.' not in PATH
+
+(F) You used the B<-S> switch, but the script to execute could not be found
+in the PATH, or at least not with the correct permissions. The script
+exists in the current directory, but PATH prohibits running it.
+
+=item Can't find %s on PATH
+
(F) You used the B<-S> switch, but the script to execute could not be found
-in the PATH, or at least not with the correct permissions.
+in the PATH.
=item Can't find label %s
the closing delimiter was omitted. Because bracketed quotes count nesting
levels, the following is missing its final parenthesis:
- print q(The character '(' starts a side comment.)
+ print q(The character '(' starts a side comment.);
+
+If you're getting this error from a here-document, you may have
+included unseen whitespace before or after your closing tag. A good
+programmer's editor will have a way to help you find these characters.
=item Can't fork
you should be calling it out of only an AUTOLOAD routine anyway. See
L<perlfunc/goto>.
-=item Can't localize a reference
+=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.)
-(F) You said something like C<local $$ref>, which is not allowed because
-the compiler can't determine whether $ref will end up pointing to anything
-with a symbol table entry, and a symbol table entry is necessary to
-do a local.
+=item Can't localize through a reference
+
+(F) You said something like C<local $$ref>, which Perl can't currently
+handle, because when it goes to restore the old value of whatever $ref
+pointed to after the scope of the local() is finished, it can't be
+sure that $ref will still be a reference.
=item Can't localize lexical variable %s
localize a package variable of the same name, qualify it with the
package name.
+=item Can't locate auto/%s.al in @INC
+
+(F) A function (or method) was called in a package which allows autoload,
+but there is no function to autoload. Most probable causes are a misprint
+in a function/method name or a failure to C<AutoSplit> the file, say, by
+doing C<make install>.
+
=item Can't locate %s in @INC
(F) You said to do (or require, or use) a file that couldn't be found
(W) The @ISA array contained the name of another package that doesn't seem
to exist.
-=item Can't mktemp()
+=item Can't make list assignment to \%ENV on this system
-(F) The mktemp() routine failed for some reason while trying to process
-a B<-e> switch. Maybe your /tmp partition is full, or clobbered.
+(F) List assignment to %ENV is not supported on some systems, notably VMS.
=item Can't modify %s in %s
=item Can't open %s: %s
-(S) An inplace edit couldn't open the original file for the indicated reason.
-Usually this is because you don't have read permission for the file.
+(S) The implicit opening of a file through use of the C<E<lt>E<gt>>
+filehandle, either implicitly under the C<-n> or C<-p> command-line
+switches, or explicitly, failed for the indicated reason. Usually this
+is because you don't have read permission for a file which you named
+on the command line.
=item Can't open bidirectional pipe
(F) The script you specified can't be opened for the indicated reason.
+=item Can't redefine active sort subroutine %s
+
+(F) Perl optimizes the internal handling of sort subroutines and keeps
+pointers into them. You tried to redefine one such sort subroutine when it
+was currently active, which is not allowed. If you really want to do
+this, you should write C<sort { &func } @x> instead of C<sort func @x>.
+
=item Can't rename %s to %s: %s, skipping file
(S) The rename done by the B<-i> switch failed for some reason, probably because
=item Can't take log of %g
-(F) Logarithms are defined on only positive real numbers.
+(F) For ordinary real numbers, you can't take the logarithm of a
+negative number or zero. There's a Math::Complex package that comes
+standard with Perl, though, if you really want to do that for
+the negative numbers.
=item Can't take sqrt of %g
(F) For ordinary real numbers, you can't take the square root of a
-negative number. There's a Complex package available for Perl, though,
-if you really want to do that.
+negative number. There's a Math::Complex package that comes standard
+with Perl, though, if you really want to do that.
=item Can't undef active subroutine
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
=item Deep recursion on subroutine "%s"
(W) This subroutine has called itself (directly or indirectly) 100
-times than it has returned. This probably indicates an infinite
+times more than it has returned. This probably indicates an infinite
recursion, unless you're writing strange benchmark programs, in which
case it indicates something else.
+=item Delimiter for here document is too long
+
+(F) In a here document construct like C<E<lt>E<lt>FOO>, the label
+C<FOO> is too long for Perl to handle. You have to be seriously
+twisted to write code that triggers this error.
+
=item Did you mean &%s instead?
(W) You probably referred to an imported subroutine &FOO as $FOO or some such.
passed an invalid file specification to Perl, or you've found a
case the conversion routines don't handle. Drat.
+=item Excessively long <> operator
+
+(F) The contents of a <> operator may not exceed the maximum size of a
+Perl identifier. If you're just trying to glob a long list of
+filenames, try using the glob() operator, or put the filenames into a
+variable and glob that.
+
=item Execution of %s aborted due to compilation errors
(F) The final summary message when a Perl compilation fails.
(W) You are exiting a substitution by unconventional means, such as
a return, a goto, or a loop control statement.
+=item Explicit blessing to '' (assuming package main)
+
+(W) You are blessing a reference to a zero length string. This has
+the effect of blessing the reference into the package main. This is
+usually not what you want. Consider providing a default target
+package, e.g. bless($ref, $p or 'MyPackage');
+
=item Fatal VMS error at %s, line %d
(P) An error peculiar to VMS. Something untoward happened in a VMS system
(D) Really old Perl let you omit the % on hash names in some spots. This
is now heavily deprecated.
+=item Identifier too long
+
+(F) Perl limits identifiers (names for variables, functions, etc.) to
+about 250 characters for simple names, and somewhat more for compound
+names (like C<$A::B>). You've exceeded Perl's limits. Future
+versions of Perl are likely to eliminate these arbitrary limitations.
+
=item Ill-formed logical name |%s| in prime_env_iter
(W) A warning peculiar to VMS. A logical name was encountered when preparing
(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
script if C<$ENV{PATH}> contains a directory that is writable by the world.
See L<perlsec>.
-=item Insecure PATH
+=item Insecure $ENV{%s} while running %s
(F) You can't use system(), exec(), or a piped open in a setuid or
-setgid script if C<$ENV{PATH}> is derived from data supplied (or
+setgid script if any of C<$ENV{PATH}>, C<$ENV{IFS}>, C<$ENV{CDPATH}>,
+C<$ENV{ENV}> or C<$ENV{BASH_ENV}> are derived from data supplied (or
potentially supplied) by the user. The script must set the path to a
known value, using trustworthy data. See L<perlsec>.
(F) The range specified in a character class had a minimum character
greater than the maximum character. See L<perlre>.
+=item Invalid conversion in %s: "%s"
+
+(W) Perl does not understand the given format conversion.
+See L<perlfunc/sprintf>.
+
+=item Invalid type in pack: '%s'
+
+(F) The given character is not a valid pack type. See L<perlfunc/pack>.
+(W) The given character is not a valid pack type but used to be silently
+ignored.
+
+=item Invalid type in unpack: '%s'
+
+(F) The given character is not a valid unpack type. See L<perlfunc/unpack>.
+(W) The given character is not a valid unpack type but used to be silently
+ignored.
+
=item ioctl is not implemented
(F) Your machine apparently doesn't implement ioctl(), which is pretty
As a general rule, you'll find it's missing near the place you were last
editing.
-=item Missing semicolon on previous line?
-
-(S) This is an educated guess made in conjunction with the message "%s
-found where operator expected". Don't automatically put a semicolon on
-the previous line just because you saw this message.
-
=item Modification of a read-only value attempted
(F) You tried, directly or indirectly, to change the value of a
(F) The argument to B<-I> must follow the B<-I> immediately with no
intervening space.
+=item No such array field
+
+(F) You tried to access an array as a hash, but the field name used is
+not defined. The hash at index 0 should map all valid field names to
+array indices for that to work.
+
+=item No such field "%s" in variable %s of type %s
+
+(F) You tried to access a field of a typed variable where the type
+does not know about the field name. The field names are looked up in
+the %FIELDS hash in the type package at compile time. The %FIELDS hash
+is usually set up with the 'fields' pragma.
+
=item No such pipe open
(P) An error peculiar to VMS. The internal routine my_pclose() tried to
(P) The internal pattern matching routines are out of their gourd.
-=item Odd number of elements in hash list
+=item Number too long
+
+(F) Perl limits the representation of decimal numbers in programs to about
+about 250 characters. You've exceeded that length. Future versions of
+Perl are likely to eliminate this arbitrary limitation. In the meantime,
+try using scientific notation (e.g. "1e6" instead of "1_000_000").
-(S) You specified an odd number of elements to a hash list, which is odd,
-because hash lists come in key/value pairs.
+=item Odd number of elements in hash assignment
+
+(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
(S) An internal warning that the grammar is screwed up.
-=item Operation `%s': no method found,%s
+=item Operation `%s': no method found, %s
(F) An attempt was made to perform an overloaded operation for which
no handler was defined. While some handlers can be autogenerated in
(F) The yacc parser wanted to grow its stack so it could continue parsing,
but realloc() wouldn't give it more memory, virtual or otherwise.
-=item Out of memory!
+=item Out of memory during request for %s
(X|F) The malloc() function returned 0, indicating there was insufficient
remaining memory (or virtual memory) to satisfy the request.
an emergency pool after die()ing with this message. In this case the
error is trappable I<once>.
-=item Out of memory during request for %s
+=item Out of memory during "large" request for %s
(F) The malloc() function returned 0, indicating there was insufficient
remaining memory (or virtual memory) to satisfy the request. However,
the request was judged large enough (compile-time default is 64K), so
a possibility to shut down by trapping this error is granted.
+=item Out of memory during ridiculously large request
+
+(F) You can't allocate more than 2^31+"small amount" bytes. This error
+is most likely to be caused by a typo in the Perl program. e.g., C<$arr[time]>
+instead of C<$arr[$time]>.
+
=item page overflow
(W) A single call to write() produced more lines than can fit on a page.
(P) The internal do_trans() routine was called with invalid operational data.
+=item panic: frexp
+
+(P) The library function frexp() failed, making printf("%f") impossible.
+
=item panic: goto
(P) We popped the context stack to a context with the specified label,
(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:
(S) The subroutine being declared or defined had previously been declared
or defined with a different function prototype.
+=item Range iterator outside integer range
+
+(F) One (or both) of the numeric arguments to the range operator ".."
+are outside the range which can be represented by integers internally.
+One possible workaround is to force Perl to use magical string
+increment by prepending "0" to your numbers.
+
=item Read on closed filehandle E<lt>%sE<gt>
(W) The filehandle you're reading from got itself closed sometime before now.
desired output is compiled into Perl, which entails some overhead,
which is why it's currently left out of your copy.
-=item Recursive inheritance detected
+=item Recursive inheritance detected in package '%s'
(F) More than 100 levels of inheritance were used. Probably indicates
an unintended loop in your inheritance hierarchy.
+=item Recursive inheritance detected while looking for method '%s' in package '%s'
+
+(F) More than 100 levels of inheritance were encountered while invoking a
+method. 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
reference count of other than 1.
+=item regexp *+ operand could be empty
+
+(F) The part of the regexp subject to either the * or + quantifier
+could match an empty string.
+
=item regexp memory corruption
(P) The regular expression engine got confused by what the regular
(F) The lexer couldn't find the final delimiter of a // or m{}
construct. Remember that bracketing delimiters count nesting level.
+Missing the leading C<$> from a variable C<$m> may cause this error.
-=item seek() on unopened file
+=item %sseek() on unopened file
-(W) You tried to use the seek() function on a filehandle that was either
-never opened or has since been closed.
+(W) You tried to use the seek() or sysseek() function on a filehandle that
+was either never opened or has since been closed.
=item select not implemented
(W) The filehandle you're sending to got itself closed sometime before now.
Check your logic flow.
+=item Sequence (? incomplete
+
+(F) A regular expression ended with an incomplete extension (?.
+See L<perlre>.
+
=item Sequence (?#... not terminated
(F) A regular expression comment must be terminated by a closing
=item setruid() not implemented
-(F) You tried to assign to C<$<lt>>, and your operating system doesn't support
+(F) You tried to assign to C<$E<lt>>, and your operating system doesn't support
the setruid() system call (or equivalent), or at least Configure didn't
think so.
eval "sub name { ... }";
}
+=item Subroutine %s hidden by keyword; use ampersand
+
+(W) You are trying to call a subroutine that has the same name as a
+keyword. However, because the subroutine is not imported and
+you're not using an ampersand, Perl won't call the subroutine.
+
+To force a subroutine call, either put an ampersand before the
+subroutine name, or qualify the name with its package. Alternatively,
+you can import the subroutine (or pretend that it's imported with the
+C<use subs> pragma).
+
+If the Perl operator is what you want, then eliminate this warning by
+using the CORE:: prefix on the operator (e.g. CORE::log($x)) or by
+declaring the subroutine to be an object method (see L<attrs>).
+
=item Substitution loop
(P) The substitution was looping infinitely. (Obviously, a
(F) The lexer couldn't find the interior delimiter of a s/// or s{}{}
construct. Remember that bracketing delimiters count nesting level.
+Missing the leading C<$> from variable C<$s> may cause this error.
=item Substitution replacement not terminated
(F) The lexer couldn't find the final delimiter of a s/// or s{}{}
construct. Remember that bracketing delimiters count nesting level.
+Missing the leading C<$> from variable C<$s> may cause this error.
=item substr outside of string
-(W) You tried to reference a substr() that pointed outside of a string.
-That is, the absolute value of the offset was larger than the length of
-the string. See L<perlfunc/substr>.
+(S),(W) You tried to reference a substr() that pointed outside of a
+string. That is, the absolute value of the offset was larger than the
+length of the string. See L<perlfunc/substr>. This warning is
+mandatory if substr is used in an lvalue context (as the left hand side
+of an assignment or as a subroutine argument for example).
=item suidperl is no longer needed since %s
(W) The filehandle you're writing to got itself closed sometime before now.
Check your logic flow.
+=item Target of goto is too deeply nested
+
+(F) You tried to use C<goto> to reach a label that was too deeply
+nested for Perl to reach. Perl is doing you a favor by refusing.
+
=item tell() on unopened file
(W) You tried to use the tell() function on a filehandle that was either
(F) The regular expression ends with an unbackslashed backslash. Backslash
it. See L<perlre>.
-=item Translation pattern not terminated
+=item Transliteration pattern not terminated
(F) The lexer couldn't find the interior delimiter of a tr/// or tr[][]
-construct.
+or y/// or y[][] construct. Missing the leading C<$> 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
(F) You specified a signal name to the kill() function that was not recognized.
Say C<kill -l> in your shell to see the valid signal names on your system.
-=item Unrecognized switch: -%s
+=item Unrecognized switch: -%s (-h will show valid options)
(F) You specified an illegal option to Perl. Don't do that.
(If you think you didn't do that, check the #! line to see if it's
=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
depend on inheriting C<AUTOLOAD> for non-methods from a base class named
C<BaseClass>, execute C<*AUTOLOAD = \&BaseClass::AUTOLOAD> during startup.
+In code that currently says C<use AutoLoader; @ISA = qw(AutoLoader);> you
+should remove AutoLoader from @ISA and change C<use AutoLoader;> to
+C<use AutoLoader 'AUTOLOAD';>.
+
+=item Use of reserved word "%s" is deprecated
+
+(D) The indicated bareword is a reserved word. Future versions of perl
+may use it as a keyword, so you're better off either explicitly quoting
+the word in a manner appropriate for its context of use, or using a
+different name altogether. The warning can be suppressed for subroutine
+names by either adding a C<&> prefix, or using a package qualifier,
+e.g. C<&our()>, or C<Foo::our()>.
+
=item Use of %s is deprecated
(D) The construct indicated is no longer recommended for use, generally
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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