Cycles: Avoid memcpy of intersecting memory

Could happen when assignment happens to self during sorting.

1 files changed, 3 insertions, 1 deletions

diff --git a/intern/cycles/bvh/bvh_params.h b/intern/cycles/bvh/bvh_params.h
index 99bfd9449da..af8d8eeb3ee 100644
--- a/intern/cycles/bvh/bvh_params.h
+++ b/intern/cycles/bvh/bvh_params.h
@@ -113,7 +113,9 @@ public:
 	__forceinline int prim_type() const { return type; }
 
 	BVHReference& operator=(const BVHReference &arg) {
-		memcpy(this, &arg, sizeof(BVHReference));
+		if(&arg != this) {
+			memcpy(this, &arg, sizeof(BVHReference));
+		}
 		return *this;
 	}