gcc-4.9/gcc/testsuite/gcc.c-torture/execute/20000113-1.c


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struct x { 
  unsigned x1:1;
  unsigned x2:2;
  unsigned x3:3;
};
   
foobar (int x, int y, int z)
{
  struct x a = {x, y, z};
  struct x b = {x, y, z};
  struct x *c = &b;

  c->x3 += (a.x2 - a.x1) * c->x2;
  if (a.x1 != 1 || c->x3 != 5)
    abort ();
  exit (0);
}

main()
{
  foobar (1, 2, 3);
}