diff options
| author | Evgeniy Stepanov <eugeni.stepanov@gmail.com> | 2015-01-21 16:48:29 +0000 |
|---|---|---|
| committer | Evgeniy Stepanov <eugeni.stepanov@gmail.com> | 2015-01-21 16:48:29 +0000 |
| commit | 844f5828e946b8db76e1b95b1e0d04d39d4411ef (patch) | |
| tree | e2416cdaa114283e7c42ec5fb3ef07284e206515 /llvm/lib/CodeGen/SplitKit.cpp | |
| parent | 84adb5d1d0c5bae386fea67d1d5293dc4cf43b7a (diff) | |
| download | llvm-844f5828e946b8db76e1b95b1e0d04d39d4411ef.zip llvm-844f5828e946b8db76e1b95b1e0d04d39d4411ef.tar.gz llvm-844f5828e946b8db76e1b95b1e0d04d39d4411ef.tar.bz2 | |
[msan] Fix origins in realloc.
Fixes 2 issues in origins arising from realloc() calls:
* In the in-place grow case origin for the new memory is not set at all.
* In the copy-realloc case __msan_memcpy is used, which unwinds stack from
inside the MSan runtime. This does not generally work (as we may be built
w/o frame pointers), and produces "bad" stack trace anyway, with several
uninteresting (internal) frames on top.
This change also makes realloc() honor "zeroise" and "poison_in_malloc" flags.
See https://code.google.com/p/memory-sanitizer/issues/detail?id=73.
llvm-svn: 226674
Diffstat (limited to 'llvm/lib/CodeGen/SplitKit.cpp')
0 files changed, 0 insertions, 0 deletions