On Mon, Apr 22, 2024 at 11:13 AM Miguel Ojeda ojeda@kernel.org wrote:
When KUnit tests are enabled, under very big kernel configurations (e.g. `allyesconfig`), we can trigger a `rustdoc` ICE [1]:
RUSTDOC TK rust/kernel/lib.rs error: the compiler unexpectedly panicked. this is a bug.The reason is that this build step has a duplicated `@rustc_cfg` argument, which contains the kernel configuration, and thus a lot of arguments. The factor 2 happens to be enough to reach the ICE.
Thus remove the unneeded `@rustc_cfg`. By doing so, we clean up the command and workaround the ICE.
The ICE has been fixed in the upcoming Rust 1.79 [2].
Cc: stable@vger.kernel.org Fixes: a66d733da801 ("rust: support running Rust documentation tests as KUnit ones") Link: https://github.com/rust-lang/rust/issues/122722 [1] Link: https://github.com/rust-lang/rust/pull/122840 [2] Signed-off-by: Miguel Ojeda ojeda@kernel.org
Reviewed-by: Alice Ryhl aliceryhl@google.com