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David Malcolm 387f6c15d3 Handle fancy_abort before diagnostic initialization [PR98586]
If fancy_abort is called before the diagnostic subsystem is initialized,
internal_error will crash internally in a way that prevents a useful
message reaching the user.

This can happen with libgccjit in the case of gcc_assert failures
that occur outside of the libgccjit mutex that guards the rest of
gcc's state, including global_dc (when global_dc may not be
initialized yet, or might be in use by another thread).

I tried a few approaches to fixing this as noted in PR jit/98586
e.g. using a temporary diagnostic_context and initializing it for
the call to internal_error, however the more code that runs, the
more chance there is for other errors to occur.

The best fix appears to be to simply fall back to a minimal abort
implementation that only relies on i18n, as implemented by this
patch.

gcc/ChangeLog:
	PR jit/98586
	* diagnostic.c (diagnostic_kind_text): Break out this array
	from...
	(diagnostic_build_prefix): ...here.
	(fancy_abort): Detect when diagnostic_initialize has not yet been
	called and fall back to a minimal implementation of printing the
	ICE, rather than segfaulting in internal_error.
2021-01-14 17:02:28 -05:00
c++tools Daily bump. 2021-01-06 00:16:55 +00:00
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gcc Handle fancy_abort before diagnostic initialization [PR98586] 2021-01-14 17:02:28 -05:00
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libstdc++-v3 libstdc++: Implement N3644 for _GLIBCXX_DEBUG iterators 2021-01-14 22:43:26 +01:00
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.dir-locals.el .dir-locals.el: Set 'fill-column' to 80 for c-mode 2020-12-14 12:19:56 +01:00
.gitattributes Add *.md diff=md. 2020-01-15 14:29:53 +01:00
.gitignore Sync .gitignore with binutils-gdb 2020-12-02 11:04:01 -07:00
ABOUT-NLS
ar-lib
ChangeLog Daily bump. 2021-01-13 00:16:36 +00:00
ChangeLog.jit
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compile
config-ml.in config-ml.in: Suppress output from multi-do recipes 2020-11-09 14:28:37 +00:00
config.guess config.sub, config.guess : Import upstream 2020-11-07. 2020-11-23 19:30:01 +00:00
config.rpath
config.sub config.sub, config.guess : Import upstream 2020-11-07. 2020-11-23 19:30:01 +00:00
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COPYING
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libtool.m4 Update GNU/Hurd configure support 2021-01-05 16:04:14 -07:00
lt~obsolete.m4
ltgcc.m4
ltmain.sh Do not use HAVE_DOS_BASED_FILE_SYSTEM for Cygwin. 2020-04-17 09:22:51 +02:00
ltoptions.m4
ltsugar.m4
ltversion.m4
MAINTAINERS MAINTAINERS: Fix spacing 2021-01-12 18:41:43 +00:00
Makefile.def sync libctf toplevel from binutils-gdb 2021-01-07 09:28:58 +10:30
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