diff options
| -rw-r--r-- | llvm/include/llvm/Support/Allocator.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/llvm/include/llvm/Support/Allocator.h b/llvm/include/llvm/Support/Allocator.h index 5f3b284532d..9ea57039a84 100644 --- a/llvm/include/llvm/Support/Allocator.h +++ b/llvm/include/llvm/Support/Allocator.h @@ -318,8 +318,10 @@ private: #ifndef NDEBUG // Poison the memory so stale pointers crash sooner. Note we must // preserve the Size and NextPtr fields at the beginning. - sys::Memory::setRangeWritable(*I, AllocatedSlabSize); - memset(*I, 0xCD, AllocatedSlabSize); + if (AllocatedSlabSize != 0) { + sys::Memory::setRangeWritable(*I, AllocatedSlabSize); + memset(*I, 0xCD, AllocatedSlabSize); + } #endif Allocator.Deallocate(*I, AllocatedSlabSize); } |
