// Copyright 2016 The Rust Project Developers. See the COPYRIGHT // file at the top-level directory of this distribution and at // http://rust-lang.org/COPYRIGHT. // // Licensed under the Apache License, Version 2.0 or the MIT license // , at your // option. This file may not be copied, modified, or distributed // except according to those terms. #![deny(single_use_lifetimes)] #![allow(dead_code)] #![allow(unused_variables)] // Test that we DO warn for a lifetime used only once in an impl. // // (Actually, until #15872 is fixed, you can't use `'_` here, but // hopefully that will come soon.) struct Foo<'f> { data: &'f u32 } impl<'f> Foo<'f> { //~ ERROR `'f` only used once fn inherent_a(&self) { } } fn main() { }