https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65752
--- Comment #17 from Chung-Kil Hur <gil.hur at sf dot snu.ac.kr> ---
Hi Richard,
I modified the example further.
#include <stdio.h>
int main() {
int x = 0;
uintptr_t xp = (uintptr_t) &x;
uintptr_t i, j;
for (i = 0; i < xp; i++) { }
j = i;
/* The following "if" statement is never executed because j == xp */
if (j != xp) {
printf("hello\n");
j = xp;
}
*(int*)((xp+i)-j) = 15;
printf("%d\n", x);
}
The above example does not print "hello", so i can assume that "j = xp" is not
executed.
However, the program prints "0" instead of "15".
Can you explain this?