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0b83c4fabb
gcc/libstdc++-v3
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François Dumont 0b83c4fabb libstdc++ Enhance thread safety of debug mode iterators 
Avoids race condition when checking for an iterator to be singular or
to be comparable to another iterator.

	* src/c++/debug.cc
	(_Safe_sequence_base::_M_attach_single): Set attached iterator
	sequence pointer and version.
	(_Safe_sequence_base::_M_detach_single): Reset detached iterator.
	(_Safe_iterator_base::_M_attach): Remove attached iterator sequence
	pointer and version asignments.
	(_Safe_iterator_base::_M_attach_single): Likewise.
	(_Safe_iterator_base::_M_detach_single): Remove detached iterator
	reset.
	(_Safe_iterator_base::_M_singular): Use atomic load to access parent
	sequence.
	(_Safe_iterator_base::_M_can_compare): Likewise.
	(_Safe_iterator_base::_M_get_mutex): Likewise.
	(_Safe_local_iterator_base::_M_attach): Remove attached iterator container
	pointer and version assignments.
	(_Safe_local_iterator_base::_M_attach_single): Likewise.
	(_Safe_unordered_container_base::_M_attach_local_single):
	Set attached iterator container pointer and version.
	(_Safe_unordered_container_base::_M_detach_local_single): Reset detached
	iterator.
2020-05-10 23:01:41 +02:00
..
config Update the baseline symbols for SPARC64/Linux 2020-05-07 10:56:51 +02:00
doc libstdc++: Document library versioning for 9.[123] and 10.1 2020-05-06 10:30:15 +01:00
include libstdc++: Fix some C++20 algorithms to work in parallel mode 2020-05-07 21:43:49 +01:00
libsupc++ libstdc++: Fix the return type of __cxa_finalize 2020-05-04 23:07:19 +01:00
po Add `--with-toolexeclibdir=' configuration option 2020-01-24 11:24:25 +00:00
python libstdc++: Fix regression in libstdc++-prettyprinters/cxx20.cc 2020-02-17 13:20:57 +00:00
scripts
src libstdc++ Enhance thread safety of debug mode iterators 2020-05-10 23:01:41 +02:00
testsuite libstdc++ std::fill overload for std::vector<bool>::iterator 2020-05-06 23:28:22 +02:00
acinclude.m4 libstdc++: Replace glibc-specific check for clock_gettime (PR 93325) 2020-01-28 13:24:09 +00:00
aclocal.m4 Add `--with-toolexeclibdir=' configuration option 2020-01-24 11:24:25 +00:00
ChangeLog libstdc++ Enhance thread safety of debug mode iterators 2020-05-10 23:01:41 +02:00
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config.h.in
configure Use a non-empty test program to test ability to link. 2020-02-12 13:22:07 -08:00
configure.ac
configure.host
crossconfig.m4
fragment.am
linkage.m4
Makefile.am
Makefile.in Add `--with-toolexeclibdir=' configuration option 2020-01-24 11:24:25 +00:00
README

README 

file: libstdc++-v3/README

New users may wish to point their web browsers to the file
index.html in the 'doc/html' subdirectory.  It contains brief
building instructions and notes on how to configure the library in
interesting ways.