File: non-const-op-const-closure-non-const-outer.rs

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#![feature(const_closures, const_trait_impl)]
#![allow(incomplete_features)]

trait Foo {
    fn foo(&self);
}

impl Foo for () {
    fn foo(&self) {}
}

fn main() {
    (const || { (()).foo() })();
    //~^ ERROR: cannot call non-const fn
}