gopath = *tmp
		dir = ""
	} else {
		d, err := os.MkdirTemp("", filepath.Base(t.Name()))
		if err != nil {
			t.Fatal(err)
		}
		dir = d
		gopath = d
	}

	exe := buildPtrTests(t, gopath, false)
	exe2 := buildPtrTests(t, gopath, true)

	// We (TestPointerChecks) return before the parallel subtest functions do,
	// so we can't just defer os.RemoveAll(dir). Instead we have to wait for