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author | Eric Fiselier <eric@efcs.ca> | 2018-09-22 19:22:36 +0000 |
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committer | Eric Fiselier <eric@efcs.ca> | 2018-09-22 19:22:36 +0000 |
commit | 4b47cbccd453c089f0a1d1699dd80718943986d0 (patch) | |
tree | 71306c3c9231d833894879598c21ab0e16d3718a /libcxx/docs/index.rst | |
parent | 931d66cd2216e27b76b70d63592212245a1689bd (diff) | |
download | bcm5719-llvm-4b47cbccd453c089f0a1d1699dd80718943986d0.tar.gz bcm5719-llvm-4b47cbccd453c089f0a1d1699dd80718943986d0.zip |
Fix incorrectly aligned exceptions in 32 bit builds.
This patch fixes a bug where exceptions in 32 bit builds
would be incorrectly aligned because malloc only provides 8 byte aligned
memory where 16 byte alignment is needed.
This patch makes libc++abi correctly use posix_memalign when it's
available. This requires defining _LIBCPP_BUILDING_LIBRARY so that
libc++ only defines _LIBCPP_HAS_NO_ALIGNED_ALLOCATION when libc doesn't
support it and not when aligned new/delete are disable for other
reasons.
This bug somehow made it into the 7.0 release, making it a regression.
Therefore this patch should be included in the next dot release.
llvm-svn: 342815
Diffstat (limited to 'libcxx/docs/index.rst')
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