SKIP: FAILED

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

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