(D deprecated) You called a function whose use is deprecated. See
the function's name in L<POSIX> for details.
+=item Cannot chr %f
+
+(F) You passed an invalid number (like an infinity or not-a-number) to C<chr>.
+
+=item Cannot compress %f in pack
+
+(F) You tried compressing an infinity or not-a-number as an unsigned
+integer with BER, which makes no sense.
+
=item Cannot compress integer in pack
(F) An argument to pack("w",...) was too large to compress. The BER
-compressed integer format can only be used with positive integers, and you
-attempted to compress Infinity or a very large number (> 1e308).
-See L<perlfunc/pack>.
+compressed integer format can only be used with positive integers, and
+you attempted to a very large number (> 1e308). See L<perlfunc/pack>.
=item Cannot compress negative numbers in pack
(S io) You tried to apply an encoding that did not exist to a filehandle,
either with open() or binmode().
+=item Cannot pack %f with '%c'
+
+(F) You tried converting an infinity or not-a-number to an integer,
+which makes no sense.
+
+=item Cannot printf %f with '%c'
+
+(F) You tried printing an infinity or not-a-number as a character (%c),
+which makes no sense. Maybe you meant '%s', or just stringifying it?
+
=item Cannot set tied @DB::args
(F) C<caller> tried to set C<@DB::args>, but found it tied. Tying C<@DB::args>
functioning as a class, but that package doesn't define that particular
method, nor does any of its base classes. See L<perlobj>.
+=item Can't locate object method "%s" via package "%s" (perhaps you forgot
+to load "%s"?)
+
+(F) You called a method on a class that did not exist, and the method
+could not be found in UNIVERSAL. This often means that a method
+requires a package that has not been loaded.
+
=item Can't locate package %s for @%s::ISA
(W syntax) The @ISA array contained the name of another package that
=item "\c%c" is more clearly written simply as "%s"
(W syntax) The C<\cI<X>> construct is intended to be a way to specify
-non-printable characters. You used it for a printable one, which is better
-written as simply itself, perhaps preceded by a backslash for non-word
-characters.
+non-printable characters. You used it for a printable one, which
+is better written as simply itself, perhaps preceded by a backslash
+for non-word characters. Doing it the way you did is not portable
+between ASCII and EBCDIC platforms.
=item Cloning substitution context is unimplemented
in any future release of perl. See the explanation under
L<perlsyn/Experimental Details on given and when>.
-=item Global symbol "%s" requires explicit package name
+=item Global symbol "%s" requires explicit package name (did you forget to
+declare "my %s"?)
(F) You've said "use strict" or "use strict vars", which indicates
that all variables must either be lexically scoped (using "my" or "state"),
=item Hexadecimal float: exponent overflow
-(W overflow) The hexadecimal floating point has larger exponent
+(W overflow) The hexadecimal floating point has a larger exponent
than the floating point supports.
=item Hexadecimal float: exponent underflow
-(W overflow) The hexadecimal floating point has smaller exponent
+(W overflow) The hexadecimal floating point has a smaller exponent
than the floating point supports.
+=item Hexadecimal float: internal error
+
+(F) Something went horribly bad in hexadecimal float handling.
+
=item Hexadecimal float: mantissa overflow
(W overflow) The hexadecimal floating point literal had more bits in
=item Hexadecimal float: unsupported long double format
(F) You have configured Perl to use long doubles but
-the internals of the long double format are unknown,
+the internals of the long double format are unknown;
therefore the hexadecimal float output is impossible.
=item Hexadecimal number > 0xffffffff non-portable
=item Ignoring zero length \N{} in character class in regex; marked by
S<<-- HERE> in m/%s/
-(W regexp) Named Unicode character escapes C<(\N{...})> may return a
+(W regexp) Named Unicode character escapes (C<\N{...}>) may return a
zero-length sequence. When such an escape is used in a character class
its behaviour is not well defined. Check that the correct escape has
been used, and the correct charname handler is in scope.
=item Invalid negative number (%s) in chr
(W utf8) You passed a negative number to C<chr>. Negative numbers are
-not valid characters numbers, so it return the Unicode replacement
+not valid character numbers, so it returns the Unicode replacement
character (U+FFFD).
=item invalid option -D%c, use -D'' to see choices
class loses its specialness: it matches almost everything, which is
probably not what you want.
-=item \N{} in character class restricted to one character in regex; marked
+=item \N{} in inverted character class or as a range end-point is restricted to one character in regex; marked
by S<<-- HERE> in m/%s/
-(F) Named Unicode character escapes C<(\N{...})> may return a
-multi-character sequence. Such an escape may not be used in
-a character class, because character classes always match one
-character of input. Check that the correct escape has been used,
-and the correct charname handler is in scope. The S<<-- HERE> shows
-whereabouts in the regular expression the problem was discovered.
+(F) Named Unicode character escapes (C<\N{...}>) may return a
+multi-character sequence. Even though a character class is
+supposed to match just one character of input, perl will match the
+whole thing correctly, except when the class is inverted (C<[^...]>),
+or the escape is the beginning or final end point of a range. The
+mathematically logical behavior for what matches when inverting
+is very different from what people expect, so we have decided to
+forbid it. Similarly unclear is what should be generated when the
+C<\N{...}> is used as one of the end points of the range, such as in
+
+ [\x{41}-\N{ARABIC SEQUENCE YEH WITH HAMZA ABOVE WITH AE}]
+
+What is meant here is unclear, as the C<\N{...}> escape is a sequence
+of code points, so this is made an error.
=item \N{NAME} must be resolved by the lexer in regex; marked by
S<<-- HERE> in m/%s/
(P) While attempting folding constants an exception other than an C<eval>
failure was caught.
-=item panic: frexp
+=item panic: frexp: %f
(P) The library function frexp() failed, making printf("%f") impossible.
command-line switch. (This output goes to STDOUT unless you've
redirected it with select().)
-=item (perhaps you forgot to load "%s"?)
-
-(F) This is an educated guess made in conjunction with the message
-"Can't locate object method \"%s\" via package \"%s\"". It often means
-that a method requires a package that has not been loaded.
-
=item Perl folding rules are not up-to-date for 0x%X; please use the perlbug
utility to report; in regex; marked by S<<-- HERE> in m/%s/
The S<<-- HERE> shows whereabouts in the regular expression the problem
was discovered. See L<perlre>.
+=item Switch (?(condition)... not terminated in regex; marked by
+S<<-- HERE> in m/%s/
+
+(F) You ommitted to close a (?(condition)...) block somewhere in the
+pattern. Add a closing parenthesis in the appropriate position. See
+L<perlre>.
+
=item Switch condition not recognized in regex; marked by S<<-- HERE> in
m/%s/
=item Using just the first character returned by \N{} in character class in
regex; marked by S<<-- HERE> in m/%s/
-(W regexp) A charnames handler may return a sequence of more than one
-character. Currently all but the first one are discarded when used in
-a regular expression pattern bracketed character class.
+(W regexp) Named Unicode character escapes C<(\N{...})> may return
+a multi-character sequence. Even though a character class is
+supposed to match just one character of input, perl will match
+the whole thing correctly, except when the class is inverted
+(C<[^...]>), or the escape is the beginning or final end point of
+a range. For these, what should happen isn't clear at all. In
+these circumstances, Perl discards all but the first character
+of the returned sequence, which is not likely what you want.
=item Using !~ with %s doesn't make sense
=item Zero length \N{} in regex; marked by S<<-- HERE> in m/%s/
-(F) Named Unicode character escapes C<(\N{...})> may return a zero-length
+(F) Named Unicode character escapes (C<\N{...}>) may return a zero-length
sequence. Such an escape was used in an extended character class, i.e.
C<(?[...])>, which is not permitted. Check that the correct escape has
been used, and the correct charnames handler is in scope. The S<<-- HERE>
https://perl5.git.perl.org / perl5.git / blobdiff