1/* { dg-do compile } */
2/* { dg-options "-Wuninitialized -O2" } */
3
4extern int bar();
5int foo(int n, int m)
6{
7 for (;;) {
8   int err = ({int _err;
9     for (int i = 0; i < 16; ++i) {
10       if (m+i > n)
11          break;
12       _err = 17;
13       _err = bar();
14     }
15     _err;
16   });
17
18   if (err == 0) return 17; }); /* { dg-warning "uninitialized" "warn on _err" } */
19 }
20
21 return 18;
22}
23
24