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02c84d7f0f
In 4764858cb80e76fdba33cc1b3be8fcdef26df754 I added code that eval's the argument extraction from DB::args() (code written by both Pali and myself independently). Unfortunately the commit message for that commit was somewhat misleading, making it sound like the patch was a complete fix for the underlying problem of stack-not-refcounted bugs, when in fact it is actually a workaround, and a not-universally popular one either due to its incompleteness. For more details of why it is not popular see Zeframs commentary in https://rt.perl.org/Public/Bug/Display.html?id=131046 Despite the concerns expressed by Zefram when considered from the POV of a large enterprise using Carp to trap exceptions from application code, having Carp throw its own exceptions about stack-not-refcounted bugs and thus hiding the applications error data is a significant issue. So in 4764858cb80e76fdba33cc1b3be8fcdef26df754 we use eval to handle those cases where Perl /can/ detect a stack-not-refcounted error, and thus preserve as much of the applications error data as possible. This commit adds a comment to Carp which spells all of this out.
157 lines
4.3 KiB
Plaintext
157 lines
4.3 KiB
Plaintext
version 1.49
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* comment only change, document the change from 1.47 better
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and create a commit in blead-perl which can be used to
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reference this issue from the bug report.
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version 1.48
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* guard against hand-rolled UNIVERSAL::can() implementations
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which throw exceptions when we call $obj->can("((").
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version 1.47, 1.47_02
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* Deal with overloading when overload.pm is not use
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* Note 1.47_02 only existed for one commit in blead-perl,
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and in fact no 1.47 should ever see the wild.
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version 1.47, 1.47_01
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* Do not die on trappable stack-not-refcounted bugs while
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serializing the stack.
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* Note 1.47_01 only existed for one commit in blead-perl,
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and in fact no 1.47 should ever see the wild.
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version 1.46
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* avoid vivifying UNIVERSAL::isa:: in Carp
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version 1.45
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* Optimize format_arg when arguments contain many references
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version 1.43
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* fix problems introduced by the partial EBCDIC support from version
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1.35
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version 1.42
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* add some doc clue about what cluck does
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* avoid floating point overflow in test
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version 1.41
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* add missing "<FH> chunk #" phrase to messages
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version 1.40; 2016-03-10
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* Get arg_string.t to compile in perl v5.6
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* Add information for how to contribute to Carp.
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version 1.39; 2016-03-06
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* bugfix: longmess() should return the error in scalar context
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(CPANRT#107225)
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version 1.38; 2015-11-06
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* stable release of changes since v1.36
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version 1.37_02; 2015-10-30
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* bugfix: remove unused parent.pm from prereqs
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version 1.37_01; 2015-10-25
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* improvements for working on older perls
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* bugfix: $Carp::MaxArgNums is no longer treated as if it was one larger
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version 1.36; 2015-03-14
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* bugfix: don't hardcode a path in a test; breaks because of / vs. \
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* remove an unneeded $VERSION eval to match this release to bleadperl
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version 1.35; 2015-03-14
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* improvements for working on non-ASCII platforms
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* bugfix: older perls have trouble stringifying the regexps in some tests
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* bugfix: precedence error in some tests
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* bugfix: on pre-5.14 perls, DEL was treated as a printable character
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* bugfix: ignore mismatched Carp and Carp::Heavy when it doesn't matter
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version 1.3301; 2014-04-01
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* complete dependency list
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version 1.33; 2014-03-24
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* in tests, remove unneeded (and undeclared) dependency on Test::More
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0.98
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version 1.32; 2013-09-03
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* bugfix: don't get confused by a deleted stash when generating
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stack trace
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* bugfix: don't vivify @CARP_NOT and @ISA in caller's namespace
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* bugfix: don't generate Unicode warnings on old perls when an argument
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in a stack trace contains a non-character codepoint
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* in stack traces, consistently quote string arguments
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* in stack traces, new hookable mechanism for formatting reference
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arguments
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* document exportable subroutines longmess() and shortmess()
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* if Carp::Heavy gets loaded by a mismatched Carp (especially an
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older one that expects Carp::Heavy to do real work), give a useful
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error message
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* when truncating an argument list in a stack trace, don't format the
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arguments that got truncated
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* factor out non-vivifying subroutine lookup
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* regularise test for vivification of B::
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* in tests, avoid using package name "B" when not actually testing
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things relating to the B module
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version 1.26; 2012-06-18
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* bugfix: get ", <fh> line 123" phrase from CORE::die, not allowing
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influence by any CORE::GLOBAL::die override, so that Carp can be
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used as part of a CORE::GLOBAL::die override
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* on VMS, skip some tests that rely on open3() which doesn't work
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there yet
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version 1.25; 2012-02-16
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* bugfix: avoid failure to export to very old (Perl 5.6) versions of
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warnings.pm, which could occur due to circular dependency
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* bugfix: avoid vivifying "utf8" stash on Perl 5.6, which caused swash
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loading to fail in some situations
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* add dot to end of message from Carp, to match the formatting from
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CORE::die
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* synch Carp::Heavy version number to Carp
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version 1.24; 2012-02-02
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* add ", <fh> line 123" phrase to messages, to match core die
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version 1.23; 2011-09-09
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* bugfix: make Carp::Heavy load Carp, as it used to prior to 1.22,
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for backward compatibility
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* avoid " in Carp.t test programs, which caused false failures on
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Win32 due to faulty system()
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version 1.22; 2011-09-04
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* first CPAN release
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