3 Commits

Author	SHA1	Message	Date
Kuba Brecka	f5f140db28	[tsan] Change some OS X tests to include system headers (xpc.h, mman.h) more explicitly. ... llvm-svn: 270713	2016-05-25 16:04:24 +00:00
Kuba Brecka	9ccde5ace4	[tsan] Return 0 from malloc_size for non-malloc'd pointers ... In http://reviews.llvm.org/D19100, I introduced a bug: On OS X, existing programs rely on malloc_size() to detect whether a pointer comes from heap memory (malloc_size returns non-zero) or not. We have to distinguish between a zero-sized allocation (where we need to return 1 from malloc_size, due to other binary compatibility reasons, see http://reviews.llvm.org/D19100), and pointers that are not returned from malloc at all. Differential Revision: http://reviews.llvm.org/D19653 llvm-svn: 268157	2016-04-30 07:14:41 +00:00
Kuba Brecka	173c690a61	[tsan] Fix size reporting for OS X zone allocator with 0-sized allocations ... The custom zone implementation for OS X must not return 0 (even for 0-sized allocations). Returning 0 indicates that the pointer doesn't belong to the zone. This can break existing applications. The underlaying allocator allocates 1 byte for 0-sized allocations anyway, so returning 1 in this case is okay. Differential Revision: http://reviews.llvm.org/D19100 llvm-svn: 266283	2016-04-14 09:05:19 +00:00