[Bug c/49330] Integer arithmetic on addresses optimised with pointer arithmetic rules
harald at gigawatt dot nl
gcc-bugzilla@gcc.gnu.org
Wed Jun 8 20:42:00 GMT 2011
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49330
--- Comment #1 from Harald van Dijk <harald at gigawatt dot nl> 2011-06-08 20:42:04 UTC ---
A similar example, but one which does not convert the integer back to a
pointer:
#include <stdio.h>
#include <stdlib.h>
int a;
int main() {
unsigned long b = (unsigned long) &a - 134518548;
volatile unsigned long c = b;
if (c == 0) {
if (b != 0) abort ();
}
printf("%lu\n", c);
return a;
}
This should never abort. It aborts on my system (with -m32).
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