Hello,
I found something rather strange with the unsigned comparison warnings
in GCC.
If i had,
unsigned char a;
int foo ()
{
if (a >= 0)
return 0;
else
return 1;
}
and i did gcc -O2 -c trial.c, then i get a warning
trial.c:6: warning: comparison is always true due to limited range of
data type
It works the same way if i used an unsigned short. But, if i use
unsigned int/long, i dont get this warning. This is on x86. Is there an
explanation for this?
I had initially tried this with 4.1.1 (default on RHE5), but Ian
mentioned that the behaviour is the same on mainline with -Wextra.
Cheers
Hari
