1 /* { dg-do compile } */
2 /* { dg-options "-O -fdump-tree-optimized" } */
3 
4 struct B {
5     unsigned bit0 : 1;
6     unsigned bit1 : 1;
7 };
8 
9 void
foo(struct B * b)10 foo (struct B *b)
11 {
12   b->bit0 = b->bit0 | b->bit1;
13 }
14 
15 /* { dg-final { scan-tree-dump-not "\\\(unsigned" "optimized" } } */
16