// run-pass #![feature(core_intrinsics)] use std::any::type_name; struct Bar<M>(#[allow(unused_tuple_struct_fields)] M); impl<M> Bar<M> { fn foo(&self) -> &'static str { fn f() {} fn type_name_of<T>(_: T) -> &'static str { type_name::<T>() } type_name_of(f) } } fn main() { assert_eq!(Bar(()).foo(), "issue_61894::Bar<_>::foo::f"); }