SKIP: FAILED

#include <metal_stdlib>
using namespace metal;

thread float2 u = float2(1.0f);
void f() {
  half2 const v = half2(u);
}
program_source:4:15: error: program scope variable must reside in constant address space
thread float2 u = float2(1.0f);
              ^
program_source:6:15: warning: unused variable 'v' [-Wunused-variable]
  half2 const v = half2(u);
              ^