Re: PATCH to fix -Wrestrict ICE (PR middle-end/83463)

[Jakub Jelinek <jakub at redhat dot com>]

On Mon, Dec 18, 2017 at 11:08:19AM -0700, Martin Sebor wrote:
> It isn't optimized either way.  In fact, the only indication
> of a problem in the code below is the new -Wrestrict warning:

So just call it as memcpy (0, 0, (size_t) 0); or memcpy (0, 0, 0UL);
on targets where size_t is unsigned long int, and it will be optimized away,
because it will be compatible with the builtin's prototype then.

gimple_call_builtin_p is the API that has been agreed upon to be used for
checking for builtins several years ago, there is absolutely no reason why
this pass needs to treat them differently.

	Jakub