aaf23892ab
Disallows `#![feature(no_coverage)]` on stable and beta (using standard crate-level gating) Fixes: #84836 Removes the function-level feature gating solution originally implemented, and solves the same problem using `allow_internal_unstable`, so normal crate-level feature gating mechanism can still be used (which disallows the feature on stable and beta). I tested this, building the compiler with and without `CFG_DISABLE_UNSTABLE_FEATURES=1` With unstable features disabled, I get the expected result as shown here: ```shell $ ./build/x86_64-unknown-linux-gnu/stage1/bin/rustc src/test/run-make-fulldeps/coverage/no_cov_crate.rs error[E0554]: `#![feature]` may not be used on the dev release channel --> src/test/run-make-fulldeps/coverage/no_cov_crate.rs:2:1 | 2 | #![feature(no_coverage)] | ^^^^^^^^^^^^^^^^^^^^^^^^ error: aborting due to previous error For more information about this error, try `rustc --explain E0554`. ``` r? ````@Mark-Simulacrum```` cc: ````@tmandry```` ````@wesleywiser```` |
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For high-level intro to how type checking works in rustc, see the type checking chapter of the rustc dev guide.