It still references memcpy in -Wsizeof-pointer-memaccess section. Let me suggest instead:
To fix, properly pass the size of cleared memory as the last argument: either dereference the pointer argument to sizeof when clearing *one pointed-to element*, or in addition to that multiply sizeof(*p) by the number of elements to clear in the pointed-to array (which may not be known at the point of memset call without additional code changes). I suppose a good chunk of problematic code hitting this warning would be doing something like: void foo(int a[]) { memset(a, 0, sizeof(a)); } ... in which case dereferencing a in sizeof is probably the wrong thing to do. Alexander