/* { dg-do run } *//* { dg-options "-O0" } */extern void abort (void);extern void exit (int);struct { union {int x; int y;}; int q; } b;union { struct {int x;}; int q; } e;main(){  b.y = 10;  b.x = 15;  if (b.y != 15)    abort();  e.x = 10;  e.q = 15;  if (e.x != 15)    abort();  exit(0);}