1 /* PR middle-end/58970 */ 2 3 struct T { int b : 1; }; 4 struct S { struct T t[1]; }; 5 6 void foo(int x,struct S * s)7 foo (int x, struct S *s) 8 { 9 if (x == -1) 10 s->t[x].b = 0; 11 } 12