src/test/run-pass/expr-alt-generic-box1.rs


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// -*- rust -*-
type compare<T> = fn@(@T, @T) -> bool;

fn test_generic<T>(expected: @T, eq: compare<T>) {
    let actual: @T = alt check true { true { expected } };
    assert (eq(expected, actual));
}

fn test_box() {
    fn compare_box(b1: @bool, b2: @bool) -> bool { ret *b1 == *b2; }
    let eq = compare_box(_, _);
    test_generic::<bool>(@true, eq);
}

fn main() { test_box(); }