#include <metal_stdlib>

using namespace metal;

#define TINT_ISOLATE_UB(VOLATILE_NAME) \
  {volatile bool VOLATILE_NAME = false; if (VOLATILE_NAME) break;}

void f() {
  for(int must_not_collide = 0; ; ) {
    TINT_ISOLATE_UB(tint_volatile_false);
    break;
  }
  int must_not_collide = 0;
}