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-rw-r--r--compiler-rt/lib/tsan/rtl/tsan_defs.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/compiler-rt/lib/tsan/rtl/tsan_defs.h b/compiler-rt/lib/tsan/rtl/tsan_defs.h
index 55580a5c443..8a0381e61ab 100644
--- a/compiler-rt/lib/tsan/rtl/tsan_defs.h
+++ b/compiler-rt/lib/tsan/rtl/tsan_defs.h
@@ -149,7 +149,8 @@ class RegionAlloc;
// Descriptor of user's memory block.
struct MBlock {
- u64 siz;
+ u64 siz : 48;
+ u64 tag : 16;
u32 stk;
u16 tid;
};
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