rust/src/test/run-pass/expr-alt-generic-box2.rs
Marijn Haverbeke 67cc89f38d Rewrite exhaustiveness checker
Issue #352
Closes #1720

The old checker would happily accept things like 'alt x { @some(a) { a } }'.
It now properly descends into patterns, checks exhaustiveness of booleans,
and complains when number/string patterns aren't exhaustive.
2012-02-15 15:47:42 +01:00

19 lines
389 B
Rust

// -*- rust -*-
type compare<T> = fn@(T, T) -> bool;
fn test_generic<T: copy>(expected: T, eq: compare<T>) {
let actual: T = alt check true { true { expected } };
assert (eq(expected, actual));
}
fn test_vec() {
fn compare_box(&&v1: @int, &&v2: @int) -> bool { ret v1 == v2; }
let eq = compare_box(_, _);
test_generic::<@int>(@1, eq);
}
fn main() { test_vec(); }