1fn foo(x: i8) void {
 2    switch (x) {
 3        -128...0 => {},
 4        1 => {},
 5        2 => {},
 6        3 => {},
 7        4...127 => {},
 8        else => {},
 9    }
10}
11export fn entry() usize {
12    return @sizeOf(@TypeOf(&foo));
13}
14
15// error
16//
17// :8:14: error: unreachable else prong; all cases already handled