-fstrict-aliasing

[John Parkes]

Is GCC permitted to miscompile, with -fstrict-aliasing, source
which clearly flouts the assumptions of that option ?

eg.

#include <stdio.h>

unsigned int x, y;
float i, j;
int r;

int main()
{
	x = 0xFFFFFFFE;
	y = 0xCBFFFFFE;
	i = *(float*)&x;
	j = *(float*)&y;
	r = i<=j;
	printf("result = %d\n", r);
	return 0;
}

TIA, John Parkes