| // Copyright 2017 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: -C codegen-units=8 -Z thinlto |
| // ignore-windows |
| // min-llvm-version 4.0 |
| |
| #![feature(linkage)] |
| |
| pub mod foo { |
| #[linkage = "weak"] |
| #[no_mangle] |
| pub extern "C" fn FOO() -> i32 { |
| 0 |
| } |
| } |
| |
| mod bar { |
| extern "C" { |
| fn FOO() -> i32; |
| } |
| |
| pub fn bar() -> i32 { |
| unsafe { FOO() } |
| } |
| } |
| |
| fn main() { |
| bar::bar(); |
| } |
