// prefer using heapArenaBytes where possible (we need the
	// constant to compute some other constants).
	logHeapArenaBytes = (6+20)*(_64bit*(1-goos.IsWindows)*(1-goarch.IsWasm)*(1-goos.IsIos*goarch.IsArm64)) + (2+20)*(_64bit*goos.IsWindows) + (2+20)*(1-_64bit) + (2+20)*goarch.IsWasm + (2+20)*goos.IsIos*goarch.IsArm64

	// heapArenaBitmapWords is the size of each heap arena's bitmap in uintptrs.

		3: {"gopher", 0, ""},
		4: {"-", -1, "negative"},
		5: {"--", -102, "negative"},
		6: {string(make([]byte, 255)), int((^uint(0))/255 + 1), "overflow"},
	})

	const is64Bit = 1<<(^uintptr(0)>>63)/2 != 0
	if !is64Bit {
		return
	}

	runTestCases("64-bit", []testCase{
		0: {"-", maxInt, "out of range"},
	})
}

func runesEqual(a, b []rune) bool {
	if len(a) != len(b) {

		3: {"gopher", 0, ""},
		4: {"-", -1, "negative"},
		5: {"--", -102, "negative"},
		6: {string(make([]byte, 255)), int((^uint(0))/255 + 1), "overflow"},
	})

	const is64Bit = 1<<(^uintptr(0)>>63)/2 != 0
	if !is64Bit {
		return
	}

	runTestCases("64-bit", []testCase{
		0: {"-", maxInt, "out of range"},
	})
}

func runesEqual(a, b []rune) bool {
	if len(a) != len(b) {

			defer wg.Done()
			labelHog(stop, gogc)
		}()
	}

	time.Sleep(dur)
	close(stop)
	wg.Wait()
}

// Check that there is no deadlock when the program receives SIGPROF while in
// 64bit atomics' critical section. Used to happen on mips{,le}. See #20146.
func TestAtomicLoadStore64(t *testing.T) {
	f, err := os.CreateTemp("", "profatomic")
	if err != nil {
		t.Fatalf("TempFile: %v", err)
	}