[TESTSUITE] assert (char == signed char)

[Neil Booth]

Michael Snyder wrote:-

> There seem to be some tests in the testsuite that are
> based on the assumption that chars are signed, and that
> will fail if they are unsigned.
> 
> Eg: 
> sizeof.exp: check valueof ((int) (char)) -1 == -1
> (prints 255 if char == unsigned)
> 
> pointers.exp: ptype pC
> (outputs "unsigned char *" if char == unsigned)
> 
> Any thoughts?  Should these be regularized to accept unsigned?
> Should it be based on a configure variable?

I'd pass -fsigned-char; that's done in some other tests.

Neil.