| // Copyright 2018 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. |
| |
| // compile-flags: -O |
| |
| // A drop([...].clone()) sequence on an Rc should be a no-op |
| // In particular, no call to __rust_dealloc should be emitted |
| #![crate_type = "lib"] |
| use std::rc::Rc; |
| |
| pub fn foo(t: &Rc<Vec<usize>>) { |
| // CHECK-NOT: __rust_dealloc |
| drop(t.clone()); |
| } |
