Reviewers: Jakob, earthdok,
Description:
Annotate PromotionQueue::RelocateQueueHead for MemorySanitizer.
BUG=chromium:416875
LOG=N
Please review this at https://codereview.chromium.org/603633002/
SVN Base: https://v8.googlecode.com/svn/branches/bleeding_edge
Affected files (+4, -0 lines):
M src/heap/heap.cc
Index: src/heap/heap.cc
diff --git a/src/heap/heap.cc b/src/heap/heap.cc
index
1cc646e14465620e244101a2470d45dfa23193fa..fc538530c328705126e65b259b5c60aeb401fc47
100644
--- a/src/heap/heap.cc
+++ b/src/heap/heap.cc
@@ -1383,6 +1383,10 @@ void PromotionQueue::RelocateQueueHead() {
while (head_start != head_end) {
int size = static_cast<int>(*(head_start++));
HeapObject* obj = reinterpret_cast<HeapObject*>(*(head_start++));
+ // New space allocation in SemiSpaceCopyObject marked the region
+ // overlapping with promotion queue as uninitialized.
+ MSAN_MEMORY_IS_INITIALIZED(&size, sizeof(size));
+ MSAN_MEMORY_IS_INITIALIZED(&obj, sizeof(obj));
emergency_stack_->Add(Entry(obj, size));
}
rear_ = head_end;
--
--
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