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/* { dg-do run } */

/* { dg-options "-O2" } */

#include <stdlib.h>

struct s {

  unsigned short f: 16;

  unsigned short y: 8;

  unsigned short g: 2;

  unsigned int x;

};

void set (struct s*, int) __attribute__((noinline));

void set (struct s* p, int flags) {

  p->g = flags << 1;

}

main() {

  struct s foo = {0 , 0, 3, 0};

  set (&foo, -1);

  if (foo.g != 2)

    abort();

  return 0;

}