[PATCH] D11948: Add some macros to abstract marking of parameters as "not null", and use them in <cstring>

[Joerg Sonnenberger via cfe-commits]

On Wed, Aug 12, 2015 at 07:18:05PM -0500, Hal Finkel via cfe-commits wrote:
> I could say the same thing about many optimizations -- I spend a lot
> of time tracking down bugs they expose -- the real thing to investigate
> here are the potential benefits to real code from performing the
> optimization. I'm generally in favor of these kinds of optimizations
> because they tend to lower abstraction penalties, but actual data here
> would be helpful.

I would be interested in real world examples where this optimisation is
benefical. This one seems to be especially obnoxious as it forces
additional branches for portable code.

Joerg