f19e763e08
This commit stabilizes the following APIs: * `TypeId::of` - now that it has an `Any` bound it's ready to be stable. * `Box<Any>::downcast` - now that an inherent impl on `Box<Any>` as well as `Box<Any+Send>` is allowed the `BoxAny` trait is removed in favor of these inherent methods. This is a breaking change due to the removal of the `BoxAny` trait, but consumers can simply remove imports to fix crates. [breaking-change]
35 lines
917 B
Rust
35 lines
917 B
Rust
// Copyright 2013 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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// Make sure the destructor is run for unit-like structs.
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// pretty-expanded FIXME #23616
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#![feature(alloc)]
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use std::thread;
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struct Foo;
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impl Drop for Foo {
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fn drop(&mut self) {
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panic!("This panic should happen.");
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}
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}
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pub fn main() {
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let x = thread::spawn(move|| {
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let _b = Foo;
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}).join();
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let s = x.err().unwrap().downcast::<&'static str>().unwrap();
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assert_eq!(&**s, "This panic should happen.");
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}
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