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-rw-r--r--compiler/utils/scoped_arena_allocator.cc1
1 files changed, 1 insertions, 0 deletions
diff --git a/compiler/utils/scoped_arena_allocator.cc b/compiler/utils/scoped_arena_allocator.cc
index a78d28792b..bd78eaef0d 100644
--- a/compiler/utils/scoped_arena_allocator.cc
+++ b/compiler/utils/scoped_arena_allocator.cc
@@ -99,6 +99,7 @@ void* ArenaStack::AllocValgrind(size_t bytes, ArenaAllocKind kind) {
}
CurrentStats()->RecordAlloc(bytes, kind);
top_ptr_ = ptr + rounded_bytes;
+ VALGRIND_MAKE_MEM_UNDEFINED(ptr, bytes);
VALGRIND_MAKE_MEM_NOACCESS(ptr + bytes, rounded_bytes - bytes);
return ptr;
}