// Tests that the typechecker checks constraints
// error-pattern:mismatched types: expected uint but found u8
use std;
import std::uint;

fn enum_chars(start:u8, end:u8) : uint::le(start, end) -> [char] {
    let i = start;
    let r = [];
    while (i <= end) {
        r += [i as char];
        i += (1u as u8);
    }
    ret r;
}

fn main() {
    log (enum_chars('a' as u8, 'z' as u8));
}