gcc/libmudflap/testsuite/libmudflap.c/pass64-frag.c

39 lines
649 B
C

/* PR libmudflap/36397 */
/* { dg-do run } */
/* { dg-options "-O -fmudflap -fno-strict-aliasing -lmudflap" } */
struct A
{
int a[2];
};
long long int x;
int __attribute__ ((noinline))
baz (long long int *x)
{
return *x;
}
int __attribute__ ((noinline))
foo (int i)
{
if (i > 10)
return baz (&x);
return ((struct A *) &x)->a[i];
}
int
main (void)
{
if (sizeof (long long) == 2 * sizeof (int)
&& sizeof (long long) == sizeof (struct A))
{
struct A a = { .a[0] = 10, .a[1] = 20 };
__builtin_memcpy (&x, &a, sizeof (x));
if (foo (0) != 10 || foo (1) != 20)
__builtin_abort ();
}
return 0;
}