src/test/compile-fail/issue-2149.rs


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impl monad<A> for [A]/~ {
    fn bind<B>(f: fn(A) -> [B]/~) {
        let mut r = fail;
        for self.each {|elt| r += f(elt); }
        //!^ WARNING unreachable expression
        //!^^ ERROR the type of this value must be known
   }
}
fn main() {
    ["hi"].bind {|x| [x] };
}