bjoernager/rust
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Use -Wunused_crate_dependencies for compiler crates.

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It's very useful. There are some false positives involving integration
tests in `rustc_pattern_analysis` and `rustc_serialize`. There is also a
false positive involving `rustc_driver_impl`'s
`rustc_randomized_layouts` feature. And I removed a `rustc_span` mention
in a doc comment in `rustc_log` because it wasn't integral to the
comment but caused a dev-dependency.
This commit is contained in:
Nicholas Nethercote 2025-03-03 18:59:30 +11:00
parent 1aeb99d248
commit 8121958fda
28 changed files with 42 additions and 53 deletions
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8
compiler/rustc_driver_impl/src/lib.rs
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@ -44,6 +44,10 @@ use rustc_errors::emitter::stderr_destination;
use rustc_errors::registry::Registry;
use rustc_errors::{ColorConfig, DiagCtxt, ErrCode, FatalError, PResult, markdown};
use rustc_feature::find_gated_cfg;
// This avoids a false positive with `-Wunused_crate_dependencies`.
// `rust_index` isn't used in this crate's code, but it must be named in the
// `Cargo.toml` for the `rustc_randomized_layouts` feature.
use rustc_index as _;
use rustc_interface::util::{self, get_codegen_backend};
use rustc_interface::{Linker, create_and_enter_global_ctxt, interface, passes};
use rustc_lint::unerased_lint_store;
@ -89,6 +93,10 @@ pub mod pretty;
#[macro_use]
mod print;
mod session_diagnostics;
// Keep the OS parts of this `cfg` in sync with the `cfg` on the `libc`
// dependency in `compiler/rustc_driver/Cargo.toml`, to keep
// `-Wunused-crated-dependencies` satisfied.
#[cfg(all(not(miri), unix, any(target_env = "gnu", target_os = "macos")))]
mod signal_handler;