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Parse rustc version at compile time

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This commit is contained in:
David Tolnay 2023-10-26 17:18:21 -07:00
parent 3e05710bee
commit d736992ac9
1 changed files with 8 additions and 15 deletions
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23
clippy_utils/src/qualify_min_const_fn.rs
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@ -5,7 +5,7 @@
use crate::msrvs::Msrv;
use hir::LangItem;
use rustc_attr::{Since, CURRENT_RUSTC_VERSION};
use rustc_attr::Since;
use rustc_const_eval::transform::check_consts::ConstCx;
use rustc_hir as hir;
use rustc_hir::def_id::DefId;
@ -372,23 +372,16 @@ fn is_const_fn(tcx: TyCtxt<'_>, def_id: DefId, msrv: &Msrv) -> bool {
// as a part of an unimplemented MSRV check https://github.com/rust-lang/rust/issues/65262.
let const_stab_rust_version = match since {
Since::Version(version) => RustcVersion::new(
u32::from(version.major),
u32::from(version.minor),
u32::from(version.patch),
),
Since::Current => {
// HACK(nilstrieb): CURRENT_RUSTC_VERSION can return versions like 1.66.0-dev.
// `rustc-semver` doesn't accept the `-dev` version number so we have to strip it off.
let short_version = CURRENT_RUSTC_VERSION.split('-').next().unwrap();
RustcVersion::parse(short_version).unwrap_or_else(|err| {
panic!("`rustc_attr::StabilityLevel::Stable::since` is ill-formatted: `{CURRENT_RUSTC_VERSION}`, {err:?}")
})
},
Since::Version(version) => version,
Since::Current => rustc_session::RustcVersion::CURRENT,
Since::Err => return false,
};
msrv.meets(const_stab_rust_version)
msrv.meets(RustcVersion::new(
u32::from(const_stab_rust_version.major),
u32::from(const_stab_rust_version.minor),
u32::from(const_stab_rust_version.patch),
))
} else {
// Unstable const fn with the feature enabled.
msrv.current().is_none()