| // 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. |
| |
| // ignore-tidy-linelength |
| |
| use std::marker::PhantomData; |
| |
| struct Foo<'x> { bar: isize, marker: PhantomData<&'x ()> } |
| fn foo1<'a>(x: &Foo) -> &'a isize { |
| //~^ HELP: consider using an explicit lifetime parameter as shown: fn foo1<'a>(x: &'a Foo) -> &'a isize |
| &x.bar //~ ERROR: cannot infer |
| } |
| |
| fn foo2<'a, 'b>(x: &'a Foo) -> &'b isize { |
| //~^ HELP: consider using an explicit lifetime parameter as shown: fn foo2<'a>(x: &'a Foo) -> &'a isize |
| &x.bar //~ ERROR: cannot infer |
| } |
| |
| fn foo3<'a>(x: &Foo) -> (&'a isize, &'a isize) { |
| //~^ HELP: consider using an explicit lifetime parameter as shown: fn foo3<'a>(x: &'a Foo) -> (&'a isize, &'a isize) |
| (&x.bar, &x.bar) //~ ERROR: cannot infer |
| //~^ ERROR: cannot infer |
| } |
| |
| fn foo4<'a, 'b>(x: &'a Foo) -> (&'b isize, &'a isize, &'b isize) { |
| //~^ HELP: consider using an explicit lifetime parameter as shown: fn foo4<'a>(x: &'a Foo) -> (&'a isize, &'a isize, &'a isize) |
| (&x.bar, &x.bar, &x.bar) //~ ERROR: cannot infer |
| //~^ ERROR: cannot infer |
| } |
| |
| struct Cat<'x, T> { cat: &'x isize, t: T } |
| struct Dog<'y> { dog: &'y isize } |
| |
| fn cat2<'x, 'y>(x: Cat<'x, Dog<'y>>) -> &'x isize { |
| //~^ HELP: consider using an explicit lifetime parameter as shown: fn cat2<'x>(x: Cat<'x, Dog<'x>>) -> &'x isize |
| x.t.dog //~ ERROR: cannot infer |
| } |
| |
| struct Baz<'x> { |
| bar: &'x isize |
| } |
| |
| impl<'a> Baz<'a> { |
| fn baz2<'b>(&self, x: &isize) -> (&'b isize, &'b isize) { |
| // The lifetime that gets assigned to `x` seems somewhat random. |
| // I have disabled this test for the time being. --pcwalton |
| (self.bar, x) //~ ERROR: cannot infer |
| //~^ ERROR: cannot infer |
| } |
| } |
| |
| fn main() {} |