[Bug c++/42810] Enumeration with sequential values has its for-loop exit condition optimized out.

[pinskia at gcc dot gnu dot org]

------- Comment #19 from pinskia at gcc dot gnu dot org  2010-01-27 21:08 
-------
Try:
#include <stdio.h>
main()
{
    for (signed char i = 1 ; i >= -2 ; i++)
    {
        printf( "%d ", i);
    }
}

The first one will never overflow the integer range as you have i <= 127 which
is always true with no overflow happening.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42810