| // 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. |
| |
| // aux-build:msvc-imp-present.rs |
| // compile-flags: -Z thinlto -C codegen-units=8 |
| // min-llvm-version: 4.0 |
| // no-prefer-dynamic |
| |
| // On MSVC we have a "hack" where we emit symbols that look like `_imp_$name` |
| // for all exported statics. This is done because we apply `dllimport` to all |
| // imported constants and this allows everything to actually link correctly. |
| // |
| // The ThinLTO passes aggressively remove symbols if they can, and this test |
| // asserts that the ThinLTO passes don't remove these compiler-generated |
| // `_imp_*` symbols. The external library that we link in here is compiled with |
| // ThinLTO and multiple codegen units and has a few exported constants. Note |
| // that we also namely compile the library as both a dylib and an rlib, but we |
| // link the rlib to ensure that we assert those generated symbols exist. |
| |
| extern crate msvc_imp_present as bar; |
| |
| fn main() { |
| println!("{}", bar::A); |
| } |
