go bug

func ConstantTimeLessOrEq(x, y int) int {
   x32 := int32(x)
   y32 := int32(y)
   return int((((x32 - y32 - 1) | (x32 >> 31) - (y32 >> 31)) >> 31) & 1)
}

func main() {
   a := 1
   b := -3
   r := ConstantTimeLessOrEq(a, b)
   fmt.Println(r)
}


https://github.com/golang/go/issues/42685