From 64d98f8ee037282c35007b64c2649055c56af1db Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:19:03 +0200 Subject: Merging upstream version 1.68.2+dfsg1. Signed-off-by: Daniel Baumann --- tests/ui/lto/msvc-imp-present.rs | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 tests/ui/lto/msvc-imp-present.rs (limited to 'tests/ui/lto/msvc-imp-present.rs') diff --git a/tests/ui/lto/msvc-imp-present.rs b/tests/ui/lto/msvc-imp-present.rs new file mode 100644 index 000000000..5498afb29 --- /dev/null +++ b/tests/ui/lto/msvc-imp-present.rs @@ -0,0 +1,22 @@ +// 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); +} -- cgit v1.2.3