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/* It is not clear whether this test is conforming. See DR#236
http://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_236.htm. However,
there seems to be consensus that the presence of a union to aggregate
struct s1 and struct s2 should make it conforming. */
struct s1 { double d; };
struct s2 { double d; };
union u { struct s1 x; struct s2 y; };
double f(struct s1 *a, struct s2 *b)
{
a->d = 1.0;
return b->d + 1.0;
}
int main()
{
union u a;
a.x.d = 0.0;
if (f (&a.x, &a.y) != 2.0)
abort ();
return 0;
}
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