[PATCH] support: Add TEST_COMPARE macro

[Paul Eggert]

On 11/27/2017 10:06 AM, Florian Weimer wrote:
> I'm not certain about that at all—the *types* could well differ in 
> signedness between architectures (as it is common for char). 

char should not be a problem: on all glibc platforms, it's widened to 
int before comparison, so its signedness is not relevant to the comparison.

Can you give an example of where compile-time checking would go awry?