SKIP: FAILED

#include <metal_stdlib>
using namespace metal;
struct main_out {
  float4 x_2_1 [[position]];
};

thread float4 x_2 = 0.0f;
void main_1() {
}
vertex main_out tint_symbol() {
  main_1();
  return {.x_2_1=x_2};
}
program_source:7:15: error: program scope variable must reside in constant address space
thread float4 x_2 = 0.0f;
              ^