[Sanitizer] Workaround for -Wunused-private-field warning - add an attribute in TSan unit test, and silence this warning as gtest has unused fields.
llvm-svn: 158449
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_internal_defs.h b/compiler-rt/lib/sanitizer_common/sanitizer_internal_defs.h
index 6ed7052..07c940e 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_internal_defs.h
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_internal_defs.h
@@ -47,6 +47,7 @@
# define ALWAYS_INLINE __attribute__((always_inline))
# define LIKELY(x) __builtin_expect(!!(x), 1)
# define UNLIKELY(x) __builtin_expect(!!(x), 0)
+# define UNUSED __attribute__((unused))
# define USED __attribute__((used))
#endif