[thirdparty/gcc.git] / gcc / testsuite / gcc.dg / nrv1.c

/* Test that the NRV optimization doesn't cause a1 to change too soon.  This
   is equivalent to c++/19317.  */
/* { dg-do run } */

void abort (void);

struct A
{
  int i[100];
};

struct A a1;

struct A f ()
{
  struct A a2;
  a2.i[0] = 42;
  /* a1.i[0] should still be 0 until we return. */
  if (a1.i[0] != 0)
    abort ();
  return a2;
}

int main()
{
  a1 = f();
  return 0;
}
Commit	Line	Data
06208009 JM	1	/* Test that the NRV optimization doesn't cause a1 to change too soon. This
	2	is equivalent to c++/19317. */
	3	/* { dg-do run } */
	4
	5	void abort (void);
	6
	7	struct A
	8	{
	9	int i[100];
	10	};
	11
	12	struct A a1;
	13
	14	struct A f ()
	15	{
	16	struct A a2;
	17	a2.i[0] = 42;
	18	/* a1.i[0] should still be 0 until we return. */
	19	if (a1.i[0] != 0)
	20	abort ();
	21	return a2;
	22	}
	23
	24	int main()
	25	{
	26	a1 = f();
	27	return 0;
	28	}