| // 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 attempts to implicitly coerce a value into an |
| // object respect the lifetime bound on the object type. |
| |
| trait Foo {} |
| impl<'a> Foo for &'a [u8] {} |
| |
| fn a(v: &[u8]) -> Box<Foo + 'static> { |
| let x: Box<Foo + 'static> = Box::new(v); |
| //~^ ERROR explicit lifetime required in the type of `v` [E0621] |
| x |
| } |
| |
| fn b(v: &[u8]) -> Box<Foo + 'static> { |
| Box::new(v) |
| //~^ ERROR explicit lifetime required in the type of `v` [E0621] |
| } |
| |
| fn c(v: &[u8]) -> Box<Foo> { |
| // same as previous case due to RFC 599 |
| |
| Box::new(v) |
| //~^ ERROR explicit lifetime required in the type of `v` [E0621] |
| } |
| |
| fn d<'a,'b>(v: &'a [u8]) -> Box<Foo+'b> { |
| Box::new(v) |
| //~^ ERROR cannot infer an appropriate lifetime due to conflicting |
| } |
| |
| fn e<'a:'b,'b>(v: &'a [u8]) -> Box<Foo+'b> { |
| Box::new(v) // OK, thanks to 'a:'b |
| } |
| |
| fn main() { } |