// Copyright 2014 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 <LICENSE-APACHE or // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your // option. This file may not be copied, modified, or distributed // except according to those terms. // Test that an impl with only one bound region `'a` cannot be used to // satisfy a constraint where there are two bound regions. trait Foo<X> { fn foo(&self, x: X) { } } fn want_foo2<T>() where T : for<'a,'b> Foo<(&'a isize, &'b isize)> { } fn want_foo1<T>() where T : for<'z> Foo<(&'z isize, &'z isize)> { } /////////////////////////////////////////////////////////////////////////// // Expressed as a where clause struct SomeStruct; impl<'a> Foo<(&'a isize, &'a isize)> for SomeStruct { } fn a() { want_foo1::<SomeStruct>(); } // OK -- foo wants just one region fn b() { want_foo2::<SomeStruct>(); } //~ ERROR not implemented fn main() { }