[PATCH] D27052: [compiler-rt][asan] Fix overlaping parameters for memmove/memcpy on windows.

[Reid Kleckner via Phabricator via llvm-commits]

rnk added a comment.

Right, but solving your issue doesn't require changing __asan_memcpy, just __asan_wrap_memcpy. At least, that's what I see in the stack trace. So, the latest patch looks good to me.

The change in behavior should be exactly what we want: For pre-compiled object code we treat memcpy as memmove, but for source code compiled with ASan, we detect memcpy overlap, which would be a bug on other platforms.


https://reviews.llvm.org/D27052