JuniorTheoryCommon

What does the program print?

package main

import "fmt"

func main() {
    switch x := 2; x {
    case 2:
        fallthrough
    case 3:
        fmt.Print(x)
    }
}

Expecting nothing: fallthrough enters the next case without checking its value, so case 3 runs although x is 2.
Expecting 3 or a compile error: fallthrough only moves to the next case and leaves x as it is, and a case may hold just fallthrough.