mirror of
https://github.com/rust-lang/rust.git
synced 2024-10-31 22:41:50 +00:00
23 lines
893 B
Rust
23 lines
893 B
Rust
// run-pass
|
|
|
|
// aux-build:msvc-imp-present.rs
|
|
// compile-flags: -Z thinlto -C codegen-units=8
|
|
// 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);
|
|
}
|