diff options
Diffstat (limited to 'src/vm/object.cpp')
| -rw-r--r-- | src/vm/object.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/vm/object.cpp b/src/vm/object.cpp index 3e3f6d120a..4c08f0254e 100644 --- a/src/vm/object.cpp +++ b/src/vm/object.cpp @@ -2954,8 +2954,9 @@ void __fastcall ZeroMemoryInGCHeap(void* mem, size_t size) *memBytes++ = 0; // now write pointer sized pieces + // volatile ensures that this doesn't get optimized back into a memset call (see #12207) size_t nPtrs = (endBytes - memBytes) / sizeof(PTR_PTR_VOID); - PTR_PTR_VOID memPtr = (PTR_PTR_VOID) memBytes; + volatile PTR_PTR_VOID memPtr = (PTR_PTR_VOID) memBytes; for (size_t i = 0; i < nPtrs; i++) *memPtr++ = 0; |