src/test/run-fail/unwind-lambda.rs

// error-pattern:fail

fn main() {
    let cheese = ~"roquefort";
    let carrots = @~"crunchy";

    fn@(tasties: @~str, macerate: fn(~str)) {
        macerate(*tasties);
    } (carrots, |food| {
        let mush = food + cheese;
        let f = fn@() {
            let chew = mush + cheese;
            fail ~"so yummy"
        };
        f();
    });
}