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// Copyright 2018 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// Regression test for #48071. This test used to ICE because -- in
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// the leak-check -- it would pass since we knew that the return type
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// was `'static`, and hence `'static: 'a` was legal even for a
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// placeholder region, but in NLL land it would fail because we had
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// rewritten `'static` to a region variable.
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//
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// compile-pass
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#![allow(warnings)]
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#![feature(dyn_trait)]
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#![feature(nll)]
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trait Foo {
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fn foo(&self) { }
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}
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impl Foo for () {
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}
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type MakeFooFn = for<'a> fn(&'a u8) -> Box<dyn Foo + 'a>;
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fn make_foo(x: &u8) -> Box<dyn Foo + 'static> {
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Box::new(())
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}
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fn main() {
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let x: MakeFooFn = make_foo as MakeFooFn;
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}
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