[asan] Avoid assert failure for non-default shadow scale
Rather than assertion failing, we can fall back to the
non-optimized version which works for any shadow scale.
@@ -28,9 +28,9 @@ static const u64 kAllocaRedzoneMask = 31UL;
// For small size classes inline PoisonShadow for better performance.
ALWAYS_INLINE void SetShadow(uptr ptr, uptr size, uptr class_id, u64 magic) {
- CHECK_EQ(SHADOW_SCALE, 3); // This code expects SHADOW_SCALE=3.
u64 *shadow = reinterpret_cast<u64*>(MemToShadow(ptr));
- if (class_id <= 6) {
+ if (SHADOW_SCALE == 3 && class_id <= 6) {
+ // This code expects SHADOW_SCALE=3.
for (uptr i = 0; i < (((uptr)1) << class_id); i++) {
shadow[i] = magic;
// Make sure this does not become memset.
