#include <metal_stdlib>
using namespace metal;

void deref() {
  float2x3 a = float2x3(0.0f);
  thread float2x3* const p = (&a);
  float3 b = (*p)[0u];
  (*p)[0u] = float3(1.0f, 2.0f, 3.0f);
}

void no_deref() {
  float2x3 a = float2x3(0.0f);
  thread float2x3* const p = (&a);
  float3 b = (*p)[0u];
  (*p)[0u] = float3(1.0f, 2.0f, 3.0f);
}

kernel void v() {
  deref();
  no_deref();
}