Dynamically linked library path resolution with `cargo clif test --doc` differs from `cargo test --doc`

[janhohenheim]

In bevyengine/bevy#14129, we discovered an issue when running cargo test --doc on Windows when linking Bevy dynamically. See that issue for a reproducible minimal example.

In bevyengine/bevy-website#1522, I added a workaround to Bevy's documentation, namely:

In order to run cargo test --doc, you must also add the path returned by rustc --print target-libdir to your PATH environment variable.

This fixes this issue when running cargo test --doc, but cargo clif test --doc still results in a dynamic library resolution error:

Test executable failed (exit code: 0xc0000135).

[bjorn3]

cargo-clif uses a separate sysroot. I think you can use rustc-clif --print target-libdir where rustc-clif is the executable right next to the cargo-clif you used for running tests.

[janhohenheim]

I've added the output of that command to my PATH and tried running doc tests in a project I happened to have open. Good news: the path resolution works! Bad news: some tests fail with the following:

Test executable failed (exit code: 0xc000001d).

stderr:
thread 'main' panicked at D:\a\rustc_codegen_cranelift\rustc_codegen_cranelift\build\stdlib\library\std\src\sync\once.rs:217:20:
assertion failed: state_and_queue.addr() & STATE_MASK == RUNNING
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

I'll try seeing if this also happens on the linked minimal example.

[janhohenheim]

I did not manage to get the exact error message, but another one. Opening a new issue since this one is resolved at least.