Dylan DPC d7a24003d8 Rollup merge of #95354 - dtolnay:rustc_const_stable, r=lcnr ... Handle rustc_const_stable attribute in library feature collector The library feature collector in [compiler/rustc_passes/src/lib_features.rs](551b4fa395/compiler/rustc_passes/src/lib_features.rs) has only been looking at `#[stable(…)]`, `#[unstable(…)]`, and `#[rustc_const_unstable(…)]` attributes, while ignoring `#[rustc_const_stable(…)]`. The consequences of this were: - When any const feature got stabilized (changing one or more `rustc_const_unstable` to `rustc_const_stable`), users who had previously enabled that unstable feature using `#![feature(…)]` would get told "unknown feature", rather than rustc's nicer "the feature … has been stable since … and no longer requires an attribute to enable". This can be seen in the way that https://github.com/rust-lang/rust/pull/93957#issuecomment-1079794660 failed after rebase: ```console error[E0635]: unknown feature `const_ptr_offset` --> $DIR/offset_from_ub.rs:1:35 | LL | #![feature(const_ptr_offset_from, const_ptr_offset)] | ^^^^^^^^^^^^^^^^ ``` - We weren't enforcing that a particular feature is either stable everywhere or unstable everywhere, and that a feature that has been stabilized has the same stabilization version everywhere, both of which we enforce for the other stability attributes. This PR updates the library feature collector to handle `rustc_const_stable`, and fixes places in the standard library and test suite where `rustc_const_stable` was being used in a way that does not meet the rules for a stability attribute.		2022-04-02 03:34:21 +02:00
..
benches	mv std libs to library/	2020-07-27 19:51:13 -05:00
primitive_docs	Add primitive documentation to libcore	2021-09-12 02:23:08 +00:00
src	Rollup merge of #95354 - dtolnay:rustc_const_stable, r=lcnr	2022-04-02 03:34:21 +02:00
tests	Fold aarch64 feature +fp into +neon	2022-03-22 15:14:33 -07:00
build.rs	std: Get the standard library compiling for wasm64	2021-11-10 08:35:42 -08:00
Cargo.toml	removing architecture requirements for RustyHermit	2022-02-15 13:57:07 +01:00