diff options
| -rw-r--r-- | core/templates/cowdata.h | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/core/templates/cowdata.h b/core/templates/cowdata.h index d446c81721..46d9797d6c 100644 --- a/core/templates/cowdata.h +++ b/core/templates/cowdata.h @@ -90,6 +90,10 @@ private: } _FORCE_INLINE_ bool _get_alloc_size_checked(size_t p_elements, size_t *out) const { + if (unlikely(p_elements == 0)) { + *out = 0; + return true; + } #if defined(__GNUC__) size_t o; size_t p; @@ -101,13 +105,12 @@ private: if (__builtin_add_overflow(o, static_cast<size_t>(32), &p)) { return false; // No longer allocated here. } - return true; #else // Speed is more important than correctness here, do the operations unchecked // and hope for the best. *out = _get_alloc_size(p_elements); - return true; #endif + return *out; } void _unref(void *p_data); |