SKIP: FAILED

#include <metal_stdlib>
using namespace metal;
struct S {
  int3 v;
};

thread S P = {};
void f() {
  P.v = int3(1, 2, 3);
  P.v[0u] = 1;
  P.v[1u] = 2;
  P.v[2u] = 3;
}
program_source:7:10: error: program scope variable must reside in constant address space
thread S P = {};
         ^