SKIP: FAILED

#include <metal_stdlib>
using namespace metal;

thread int a = 1;
fragment void f() {
  int const b = a;
}
program_source:4:12: error: program scope variable must reside in constant address space
thread int a = 1;
           ^
program_source:6:13: warning: unused variable 'b' [-Wunused-variable]
  int const b = a;
            ^