MEMORY_SANITIZER is defined by default in certain compiler environments (when
MemorySanitizer is enabled, of course). Do not redefine it in that case.
R=danno@chromium.org
Review URL: https://codereview.chromium.org/
34503012
Patch from Evgeniy Stepanov <eugenis@chromium.org>.
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17344
ce2b1a6d-e550-0410-aec6-
3dcde31c8c00
# define __has_feature(x) 0
#endif
-#if __has_feature(memory_sanitizer)
+#if __has_feature(memory_sanitizer) && !defined(MEMORY_SANITIZER)
# define MEMORY_SANITIZER
#endif