Hi Martin,

On Thu, 6 Apr 2017, Martin Liška wrote:

> Following patch fixes issues that can be seen with -fsanitize=undefined
> on GCC 7.

The commit message says:

	Memory functions like memmove and memcpy should not be called
	with an argument equal to NULL.

But the patch is not about the pointer arguments, it is about the size
argument. So I would suggest to say

	Memory functions like memmove and memcpy should only be called
	with positive sizes.

Ciao,
Johannes