1
2 /* { dg-do compile } */
3 /* { dg-options "-O2 -fdump-tree-optimized" } */
4
5 struct a {int v1;
6 int v2;};
7 struct b {int array[0]; struct a a[];};
8 union c {struct b b;};
9
10 int
test(struct b * bptr1,union c * cptr,int i,int j)11 test (struct b *bptr1, union c *cptr, int i, int j)
12 {
13 bptr1->a[i].v1=123;
14 cptr->b.a[j].v2=1;
15 return bptr1->a[i].v1;
16 }
17 int
test2(struct b * bptr1,union c * cptr,int i,int j)18 test2 (struct b *bptr1, union c *cptr, int i, int j)
19 {
20 bptr1->a[i].v1=124;
21 cptr->b.a[j].v1=1;
22 return bptr1->a[i].v1;
23 }
24 /* { dg-final { scan-tree-dump-times "return 123" 1 "optimized" { xfail *-*-* } } } */
25 /* { dg-final { scan-tree-dump-not "return 124" "optimized"} } */
26