rustdoc doesn't gate cfg(true/false) within doc(cfg(..)) · Issue #138113 · rust-lang/rust (original) (raw)

@Urgau

I tried this code:

// #![feature(cfg_boolean_literals)] should be required #![feature(doc_cfg)]

#[doc(cfg(false))] pub fn foo() {}

#[doc(cfg(true))] pub fn bar() {}

I expected to see this happen: An error requiring #![feature(cfg_boolean_literals)], as is the case currently when done #[cfg(true)].

Instead, this happened: The documenation is generated and no extra feature gate is required.

Meta

rustdoc --version --verbose:

rustdoc 1.87.0-nightly (e16a049ad 2025-03-03)
binary: rustdoc
commit-hash: e16a049adbf94d610787430b6efdf31d896dc5b6
commit-date: 2025-03-03
host: x86_64-unknown-linux-gnu
release: 1.87.0-nightly
LLVM version: 20.1.0