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-rw-r--r--compiler-rt/lib/tsan/rtl/tsan_platform.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/compiler-rt/lib/tsan/rtl/tsan_platform.h b/compiler-rt/lib/tsan/rtl/tsan_platform.h
index 3d4abbbbef8..118e01b091a 100644
--- a/compiler-rt/lib/tsan/rtl/tsan_platform.h
+++ b/compiler-rt/lib/tsan/rtl/tsan_platform.h
@@ -587,7 +587,11 @@ uptr MemToShadowImpl(uptr x) {
return (((x) & ~(Mapping::kAppMemMsk | (kShadowCell - 1)))
^ Mapping::kAppMemXor) * kShadowCnt;
#else
+# ifndef SANITIZER_WINDOWS
return ((x & ~(kShadowCell - 1)) * kShadowCnt) | Mapping::kShadowBeg;
+# else
+ return ((x & ~(kShadowCell - 1)) * kShadowCnt) + Mapping::kShadowBeg;
+# endif
#endif
}
@@ -662,7 +666,6 @@ uptr ShadowToMemImpl(uptr s) {
# ifndef SANITIZER_WINDOWS
return (s & ~Mapping::kShadowBeg) / kShadowCnt;
# else
- // FIXME(dvyukov): this is most likely wrong as the mapping is not bijection.
return (s - Mapping::kShadowBeg) / kShadowCnt;
# endif // SANITIZER_WINDOWS
#endif
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