tests/ui/typeck/return_type_containing_closure.rs


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#[allow(unused)]
fn foo() { //~ HELP a return type might be missing here
    vec!['a'].iter().map(|c| c)
    //~^ ERROR mismatched types [E0308]
    //~| NOTE expected `()`, found `Map<Iter<'_, char>, ...>`
    //~| NOTE expected unit type `()`
    //~| HELP consider using a semicolon here
}

fn main() {}