rt_gccstream/gcc/testsuite/gcc.dg/nrv1.c

29 lines
383 B
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;
}