original.name="Switch_Invalid_5"
======
>>> main.whiley
function f(int x) -> int:
    if x > 0:
        break
    return 0
---
E318 main.whiley 3,8:12
=====
>>> main.whiley 3:4
        return 1
>>> main.whiley 5
public export method test():
    assume f(-1) == 0
    assume f(0) == 0
    assume f(1) == 1
    assume f(2) == 1
---