<dawn>/test/tint/bug/tint/2201.wgsl:9:9 warning: code is unreachable
        let _e16_ = vec2(false, false);
        ^^^^^^^^^

#include <metal_stdlib>
using namespace metal;

#define TINT_ISOLATE_UB(VOLATILE_NAME) \
  volatile bool VOLATILE_NAME = true; \
  if (VOLATILE_NAME)

kernel void tint_symbol() {
  {
    TINT_ISOLATE_UB(tint_volatile_true) while(true) {
      if (true) {
        break;
      } else {
        break;
      }
      /* unreachable */
    }
  }
}