31 lines
1.3 KiB
Rust
31 lines
1.3 KiB
Rust
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// Copyright 2017 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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// aux-build:msvc-imp-present.rs
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// compile-flags: -Z thinlto -C codegen-units=8
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// no-prefer-dynamic
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// On MSVC we have a "hack" where we emit symbols that look like `_imp_$name`
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// for all exported statics. This is done because we apply `dllimport` to all
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// imported constants and this allows everything to actually link correctly.
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//
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// The ThinLTO passes aggressively remove symbols if they can, and this test
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// asserts that the ThinLTO passes don't remove these compiler-generated
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// `_imp_*` symbols. The external library that we link in here is compiled with
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// ThinLTO and multiple codegen units and has a few exported constants. Note
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// that we also namely compile the library as both a dylib and an rlib, but we
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// link the rlib to ensure that we assert those generated symbols exist.
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extern crate msvc_imp_present as bar;
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fn main() {
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println!("{}", bar::A);
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}
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