SKIP: FAILED

#include <metal_stdlib>
using namespace metal;

thread uint t = 0u;
uint4 m() {
  t = 1u;
  return uint4(t);
}
void f() {
  bool4 v = bool4(m());
}
program_source:4:13: error: program scope variable must reside in constant address space
thread uint t = 0u;
            ^
program_source:10:9: warning: unused variable 'v' [-Wunused-variable]
  bool4 v = bool4(m());
        ^