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Wire up unstable rustc --check-cfg to rustdoc #94154
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This was a weird! Simply doing this I had to manually had some extra normalizations (based on other rustdoc test) to make it fail locally. I think it will now pass on CI as well.
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Can you also add it into the rustdoc book please? Also cc @petrochenkov @camelid |
I don't have context for this change, but I don't think it's really necessary to discuss it now since it's unstable? |
Add -Z check-cfg-features to enable compile-time checking of features This pull-request implements the "[Cargo support](https://rust-lang.github.io/rfcs/3013-conditional-compilation-checking.html#cargo-support)" section of [RFC 3013: Checking conditional compilation at compile time](https://rust-lang.github.io/rfcs/3013-conditional-compilation-checking.html#checking-conditional-compilation-at-compile-time). The support is added in the form of an new unstable flags: `-Z check-cfg-features` that pass all possible features of a package to `rustc` unstable `--check-cfg` command line as `--check-cfg=values(feature, ...)`. This enables compile time checking of `feature` values in `#[cfg]`, `cfg!` and `#[cfg_attr]`. This new flag currently only affects `rustc` but `rustdoc` support will be added as soon as [it's support](rust-lang/rust#94154) is merged. Note than the intent is that this command line options become the default when stabilizing as suggested in the RFC: > [..] it seems uncontroversial for Cargo to enable checking for feature = "..." values immediately [..]
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Thanks! @bors: r+ |
📌 Commit a31ae15 has been approved by |
…eGomez Wire up unstable rustc --check-cfg to rustdoc This pull-request wire up the new unstable `--check-cfg` option from `rustc` to `rustdoc` as [requested](rust-lang#93915 (comment)) in the [pull-request](rust-lang#93915) that introduce `--check-cfg`. The motivation was describe in the original PR by `@jyn514` who wrote rust-lang#89346 (comment): > > add plumbing to pass --check-cfg from rustdoc (do we want this one?) > > It would be useful, I think, it catches issues like cfg(doctst) or something (and in general I would like expansion to match rustc as closely as possible).
…askrgr Rollup of 4 pull requests Successful merges: - rust-lang#93850 (Don't ICE when an extern static is too big for the current architecture) - rust-lang#94154 (Wire up unstable rustc --check-cfg to rustdoc) - rust-lang#94353 (Fix debug_assert in unused lint pass) - rust-lang#94366 (Add missing item to release notes) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
Add -Z check-cfg-features support for rustdoc This PR is a follow to #10408 where support for compile-time checking of features was implemented for `rustc`. At the time `rustdoc` support wasn't yet merged, but now that it has been [merged](rust-lang/rust#94154), this pull-request add support for it in the `doc` and `test --doc` (doctest) mode. r? `@alexcrichton`
This pull-request wire up the new unstable
--check-cfg
option fromrustc
torustdoc
as requested in the pull-request that introduce--check-cfg
.The motivation was describe in the original PR by @jyn514 who wrote #89346 (comment):