From: Gurusamy Sarathy Date: Sun, 10 Oct 1999 20:38:59 +0000 (+0000) Subject: add missing new diagnostics to perldelta X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=a99ba4038e8029c0d033ef497d3a0f8653f0d570;p=p5sagit%2Fp5-mst-13.2.git add missing new diagnostics to perldelta p4raw-id: //depot/perl@4338 --- diff --git a/pod/perldelta.pod b/pod/perldelta.pod index 88eeffc..2713652 100644 --- a/pod/perldelta.pod +++ b/pod/perldelta.pod @@ -1265,11 +1265,76 @@ An introduction to using the Perl Compiler suite. =head1 New Diagnostics +=over 4 + =item "my sub" not yet implemented (F) Lexically scoped subroutines are not yet implemented. Don't try that yet. +=item '!' allowed only after types %s + +(F) The '!' is allowed in pack() and unpack() only after certain types. +See L. + +=item / cannot take a count + +(F) You had an unpack template indicating a counted-length string, +but you have also specified an explicit size for the string. +See L. + +=item / must be followed by a, A or Z + +(F) You had an unpack template indicating a counted-length string, +which must be followed by one of the letters a, A or Z +to indicate what sort of string is to be unpacked. +See L. + +=item / must be followed by a*, A* or Z* + +(F) You had an pack template indicating a counted-length string, +Currently the only things that can have their length counted are a*, A* or Z*. +See L. + +=item / must follow a numeric type + +(F) You had an unpack template that contained a '#', +but this did not follow some numeric unpack specification. +See L. + +=item Repeat count in pack overflows + +(F) You can't specify a repeat count so large that it overflows +your signed integers. See L. + +=item Repeat count in unpack overflows + +(F) You can't specify a repeat count so large that it overflows +your signed integers. See L. + +=item /%s/: Unrecognized escape \\%c passed through + +(W) You used a backslash-character combination which is not recognized +by Perl. This combination appears in an interpolated variable or a +C<'>-delimited regular expression. + +=item /%s/ should probably be written as "%s" + +(W) You have used a pattern where Perl expected to find a string, +like in the first argument to C. Perl will treat the true +or false result of matching the pattern against $_ as the string, +which is probably not what you had in mind. + +=item %s() called too early to check prototype + +(W) You've called a function that has a prototype before the parser saw a +definition or declaration for it, and Perl could not check that the call +conforms to the prototype. You need to either add an early prototype +declaration for the subroutine in question, or move the subroutine +definition ahead of the call to get proper prototype checking. Alternatively, +if you are certain that you're calling the function correctly, you may put +an ampersand before the name to avoid the warning. See L. + =item %s package attribute may clash with future reserved word: %s (W) A lowercase attribute name was used that had a package-specific handler. @@ -1277,11 +1342,143 @@ That name might have a meaning to Perl itself some day, even though it doesn't yet. Perhaps you should use a mixed-case attribute name, instead. See L. -=item /%s/: Unrecognized escape \\%c passed through +=item (in cleanup) %s -(W) You used a backslash-character combination which is not recognized -by Perl. This combination appears in an interpolated variable or a -C<'>-delimited regular expression. +(W) This prefix usually indicates that a DESTROY() method raised +the indicated exception. Since destructors are usually called by +the system at arbitrary points during execution, and often a vast +number of times, the warning is issued only once for any number +of failures that would otherwise result in the same message being +repeated. + +Failure of user callbacks dispatched using the C flag +could also result in this warning. See L. + +=item <> should be quotes + +(F) You wrote CfileE> when you should have written +C. + +=item Attempt to join self + +(F) You tried to join a thread from within itself, which is an +impossible task. You may be joining the wrong thread, or you may +need to move the join() to some other thread. + +=item Bad evalled substitution pattern + +(F) You've used the /e switch to evaluate the replacement for a +substitution, but perl found a syntax error in the code to evaluate, +most likely an unexpected right brace '}'. + +=item Bad realloc() ignored + +(S) An internal routine called realloc() on something that had never been +malloc()ed in the first place. Mandatory, but can be disabled by +setting environment variable C to 1. + +=item Binary number > 0b11111111111111111111111111111111 non-portable + +(W) The binary number you specified is larger than 2**32-1 +(4294967295) and therefore non-portable between systems. See +L for more on portability concerns. + +=item Bit vector size > 32 non-portable + +(W) Using bit vector sizes larger than 32 is non-portable. + +=item Buffer overflow in prime_env_iter: %s + +(W) A warning peculiar to VMS. While Perl was preparing to iterate over +%ENV, it encountered a logical name or symbol definition which was too long, +so it was truncated to the string shown. + +=item Can't check filesystem of script "%s" + +(P) For some reason you can't check the filesystem of the script for nosuid. + +=item Can't modify non-lvalue subroutine call + +(F) Subroutines used in lvalue context should be marked as such, see +L. + +=item Can't read CRTL environ + +(S) A warning peculiar to VMS. Perl tried to read an element of %ENV +from the CRTL's internal environment array and discovered the array was +missing. You need to figure out where your CRTL misplaced its environ +or define F (see L) so that environ is not searched. + +=item Can't remove %s: %s, skipping file + +(S) You requested an inplace edit without creating a backup file. Perl +was unable to remove the original file to replace it with the modified +file. The file was left unmodified. + +=item Can't return %s from lvalue subroutine + +(F) Perl detected an attempt to return illegal lvalues (such +as temporary or readonly values) from a subroutine used as an lvalue. +This is not allowed. + +=item Can't weaken a nonreference + +(F) You attempted to weaken something that was not a reference. Only +references can be weakened. + +=item Character class [:%s:] unknown + +(F) The class in the character class [: :] syntax is unknown. + +=item Character class syntax [%s] belongs inside character classes + +(W) The character class constructs [: :], [= =], and [. .] go +I character classes, the [] are part of the construct, +for example: /[012[:alpha:]345]/. Note that the last two constructs +are not currently implemented, they are placeholders for future extensions. + +=item Constant is not %s reference + +(F) A constant value (perhaps declared using the C pragma) +is being dereferenced, but it amounts to the wrong type of reference. The +message indicates the type of reference that was expected. This usually +indicates a syntax error in dereferencing the constant value. +See L and L. + +=item constant(%s): %%^H is not localized + +(F) When setting compile-time-lexicalized hash %^H one should set the +corresponding bit of $^H as well. + +=item constant(%s): %s + +(F) Compile-time-substitutions (such as overloaded constants and +character names) were not correctly set up. + +=item defined(@array) is deprecated + +(D) defined() is not usually useful on arrays because it checks for an +undefined I value. If you want to see if the array is empty, +just use C for example. + +=item defined(%hash) is deprecated + +(D) defined() is not usually useful on hashes because it checks for an +undefined I value. If you want to see if the hash is empty, +just use C for example. + +=item Did not produce a valid header + +See Server error. + +=item Document contains no data + +See Server error. + +=item entering effective %s failed + +(F) While under the C pragma, switching the real and +effective uids or gids failed. =item Filehandle %s opened only for output @@ -1291,6 +1488,51 @@ intended it to be a read-write filehandle, you needed to open it with you intended only to read from the file, use "E". See L. +=item Hexadecimal number > 0xffffffff non-portable + +(W) The hexadecimal number you specified is larger than 2**32-1 +(4294967295) and therefore non-portable between systems. See +L for more on portability concerns. + +=item Ill-formed CRTL environ value "%s" + +(W) A warning peculiar to VMS. Perl tried to read the CRTL's internal +environ array, and encountered an element without the C<=> delimiter +used to spearate keys from values. The element is ignored. + +=item Ill-formed message in prime_env_iter: |%s| + +(W) A warning peculiar to VMS. Perl tried to read a logical name +or CLI symbol definition when preparing to iterate over %ENV, and +didn't see the expected delimiter between key and value, so the +line was ignored. + +=item Illegal binary digit %s + +(F) You used a digit other than 0 and 1 in a binary number. + +=item Illegal binary digit %s ignored + +(W) You may have tried to use a digit other than 0 or 1 in a binary number. +Interpretation of the binary number stopped before the offending digit. + +=item Illegal number of bits in vec + +(F) The number of bits in vec() (the third argument) must be a power of +two from 1 to 32 (or 64, if your platform supports that). + +=item Integer overflow in %s number + +(W) The hexadecimal, octal or binary number you have specified either +as a literal in your code or as a scalar is too big for your +architecture, and has been converted to a floating point number. On a +32-bit architecture the largest hexadecimal, octal or binary number +representable without overflow is 0xFFFFFFFF, 037777777777, or +0b11111111111111111111111111111111 respectively. Note that Perl +transparently promotes all numbers to a floating point representation +internally--subject to loss of precision errors in subsequent +operations. + =item Invalid %s attribute: %s The indicated attribute for a subroutine or variable was not recognized @@ -1308,6 +1550,33 @@ elements of an attribute list. If the previous attribute had a parenthesised parameter list, perhaps that list was terminated too soon. See L. +=item Invalid separator character %s in subroutine attribute list + +(F) Something other than a comma or whitespace was seen between the +elements of a subroutine attribute list. If the previous attribute +had a parenthesised parameter list, perhaps that list was terminated +too soon. + +=item leaving effective %s failed + +(F) While under the C pragma, switching the real and +effective uids or gids failed. + +=item Lvalue subs returning %s not implemented yet + +(F) Due to limitations in the current implementation, array and hash +values cannot be returned in subroutines used in lvalue context. +See L. + +=item Method %s not permitted + +See Server error. + +=item Missing %sbrace%s on \N{} + +(F) Wrong syntax of character name literal C<\N{charname}> within +double-quotish context. + =item Missing command in piped open (W) You used the C or C @@ -1318,6 +1587,97 @@ construction, but the command was missing or blank. (F) The reserved syntax for lexically scoped subroutines requires that they have a name with which they can be found. +=item no UTC offset information; assuming local time is UTC + +(S) A warning peculiar to VMS. Perl was unable to find the local +timezone offset, so it's assuming that local system time is equivalent +to UTC. If it's not, define the logical name F +to translate to the number of seconds which need to be added to UTC to +get local time. + +=item Octal number > 037777777777 non-portable + +(W) The octal number you specified is larger than 2**32-1 (4294967295) +and therefore non-portable between systems. See L for more +on portability concerns. + +See also L for writing portable code. + +=item panic: del_backref + +(P) Failed an internal consistency check while trying to reset a weak +reference. + +=item panic: kid popen errno read + +(F) forked child returned an incomprehensible message about its errno. + +=item panic: magic_killbackrefs + +(P) Failed an internal consistency check while trying to reset all weak +references to an object. + +=item Possible Y2K bug: %s + +(W) You are concatenating the number 19 with another number, which +could be a potential Year 2000 problem. + +=item Premature end of script headers + +See Server error. + +=item realloc() of freed memory ignored + +(S) An internal routine called realloc() on something that had already +been freed. + +=item Reference is already weak + +(W) You have attempted to weaken a reference that is already weak. +Doing so has no effect. + +=item setpgrp can't take arguments + +(F) Your system has the setpgrp() from BSD 4.2, which takes no arguments, +unlike POSIX setpgid(), which takes a process ID and process group ID. + +=item Strange *+?{} on zero-length expression + +(W) You applied a regular expression quantifier in a place where it +makes no sense, such as on a zero-width assertion. +Try putting the quantifier inside the assertion instead. For example, +the way to match "abc" provided that it is followed by three +repetitions of "xyz" is C, not C. + +=item switching effective %s is not implemented + +(F) While under the C pragma, we cannot switch the +real and effective uids or gids. + +=item This Perl can't reset CRTL eviron elements (%s) + +=item This Perl can't set CRTL environ elements (%s=%s) + +(W) Warnings peculiar to VMS. You tried to change or delete an element +of the CRTL's internal environ array, but your copy of Perl wasn't +built with a CRTL that contained the setenv() function. You'll need to +rebuild Perl with a CRTL that does, or redefine F (see +L) so that the environ array isn't the target of the change to +%ENV which produced the warning. + +=item Unknown open() mode '%s' + +(F) The second argument of 3-arguments open is not one from the list +of C>, C>, CE>, C<+L>, C<+L>, +C<+EE>, C<-|>, C<|-> of possible open() modes. + +=item Unknown process %x sent message to prime_env_iter: %s + +(P) An error peculiar to VMS. Perl was reading values for %ENV before +iterating over it, and someone else stuck a message in the stream of +data Perl expected. Someone's very confused, or perhaps trying to +subvert Perl's population of %ENV for nefarious purposes. + =item Unrecognized escape \\%c passed through (W) You used a backslash-character combination which is not recognized @@ -1337,30 +1697,6 @@ of an attribute, and it wasn't a semicolon or the start of a block. Perhaps you terminated the parameter list of the previous attribute too soon. See L. -=item defined(@array) is deprecated - -(D) defined() is not usually useful on arrays because it checks for an -undefined I value. If you want to see if the array is empty, -just use C for example. - -=item defined(%hash) is deprecated - -(D) defined() is not usually useful on hashes because it checks for an -undefined I value. If you want to see if the hash is empty, -just use C for example. - -=item Invalid separator character %s in subroutine attribute list - -(F) Something other than a comma or whitespace was seen between the -elements of a subroutine attribute list. If the previous attribute -had a parenthesised parameter list, perhaps that list was terminated -too soon. - -=item Possible Y2K bug: %s - -(W) You are concatenating the number 19 with another number, which -could be a potential Year 2000 problem. - =item Unterminated attribute parameter in subroutine attribute list (F) The lexer saw an opening (left) parenthesis character while parsing a @@ -1375,26 +1711,63 @@ of a subroutine attribute, and it wasn't a semicolon or the start of a block. Perhaps you terminated the parameter list of the previous attribute too soon. -=item /%s/ should probably be written as "%s" +=item Value of CLI symbol "%s" too long -(W) You have used a pattern where Perl expected to find a string, -like in the first argument to C. Perl will treat the true -or false result of matching the pattern against $_ as the string, -which is probably not what you had in mind. +(W) A warning peculiar to VMS. Perl tried to read the value of an %ENV +element from a CLI symbol table, and found a resultant string longer +than 1024 characters. The return value has been truncated to 1024 +characters. -=item %s() called too early to check prototype +=item Version number must be a constant number -(W) You've called a function that has a prototype before the parser saw a -definition or declaration for it, and Perl could not check that the call -conforms to the prototype. You need to either add an early prototype -declaration for the subroutine in question, or move the subroutine -definition ahead of the call to get proper prototype checking. Alternatively, -if you are certain that you're calling the function correctly, you may put -an ampersand before the name to avoid the warning. See L. +(P) The attempt to translate a C statement into +its equivalent C block found an internal inconsistency with +the version number. + +=back =head1 Obsolete Diagnostics -Todo. +=over 4 + +=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 Ill-formed logical name |%s| in prime_env_iter + +(W) A warning peculiar to VMS. A logical name was encountered when preparing +to iterate over %ENV which violates the syntactic rules governing logical +names. Because it cannot be translated normally, it is skipped, and will not +appear in %ENV. This may be a benign occurrence, as some software packages +might directly modify logical name tables and introduce nonstandard names, +or it may indicate that a logical name table has been corrupted. + +=item regexp too big + +(F) The current implementation of regular expressions uses shorts as +address offsets within a string. Unfortunately this means that if +the regular expression compiles to longer than 32767, it'll blow up. +Usually when you want a regular expression this big, there is a better +way to do it with multiple statements. See L. + +=item Use of "$$" to mean "${$}" is deprecated + +(D) Perl versions before 5.004 misinterpreted any type marker followed +by "$" and a digit. For example, "$$0" was incorrectly taken to mean +"${$}0" instead of "${$0}". This bug is (mostly) fixed in Perl 5.004. + +However, the developers of Perl 5.004 could not fix this bug completely, +because at least two widely-used modules depend on the old meaning of +"$$0" in a string. So Perl 5.004 still interprets "$$" in the +old (broken) way inside strings; but it generates this message as a +warning. And in Perl 5.005, this special treatment will cease. + +=back =head1 BUGS