1 /* { dg-do compile } */
2 /* { dg-additional-options "-Wno-aggressive-loop-optimizations" } */
3
4 unsigned int a;
5 int b[1], c, d;
6
7 void
fn1()8 fn1 ()
9 {
10 for (; d;)
11 {
12 a = c = 0;
13 for (; c < 5; c++)
14 {
15 b[a] ^= 1;
16 a--;
17 }
18 }
19 }
20