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Use helper function for searching allow_internal_unstable

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This commit is contained in:
Dylan MacKenzie 2020-09-02 14:35:02 -07:00
parent ed6c7efd87
commit c3607bd7dd
2 changed files with 10 additions and 5 deletions
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8
compiler/rustc_mir/src/transform/check_consts/mod.rs
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@ -4,10 +4,12 @@
//! has interior mutability or needs to be dropped, as well as the visitor that emits errors when
//! it finds operations that are invalid in a certain context.
use rustc_attr as attr;
use rustc_hir as hir;
use rustc_hir::def_id::{DefId, LocalDefId};
use rustc_middle::mir;
use rustc_middle::ty::{self, TyCtxt};
use rustc_span::Symbol;
pub use self::qualifs::Qualif;
@ -55,3 +57,9 @@ impl ConstCx<'mir, 'tcx> {
pub fn is_lang_panic_fn(tcx: TyCtxt<'tcx>, def_id: DefId) -> bool {
Some(def_id) == tcx.lang_items().panic_fn() || Some(def_id) == tcx.lang_items().begin_panic_fn()
}
pub fn allow_internal_unstable(tcx: TyCtxt<'tcx>, def_id: DefId, feature_gate: Symbol) -> bool {
let attrs = tcx.get_attrs(def_id);
attr::allow_internal_unstable(&tcx.sess, attrs)
.map_or(false, |mut features| features.any(|name| name == feature_gate))
}

7
compiler/rustc_mir/src/transform/qualify_min_const_fn.rs
View file

@ -1,4 +1,3 @@
use rustc_attr as attr;
use rustc_hir as hir;
use rustc_hir::def_id::DefId;
use rustc_middle::mir::*;
@ -344,8 +343,7 @@ fn feature_allowed(tcx: TyCtxt<'tcx>, def_id: DefId, feature_gate: Symbol) -> bo
// However, we cannot allow stable `const fn`s to use unstable features without an explicit
// opt-in via `allow_internal_unstable`.
attr::allow_internal_unstable(&tcx.sess, &tcx.get_attrs(def_id))
.map_or(false, |mut features| features.any(|name| name == feature_gate))
super::check_consts::allow_internal_unstable(tcx, def_id, feature_gate)
}
/// Returns `true` if the given library feature gate is allowed within the function with the given `DefId`.
@ -364,8 +362,7 @@ pub fn lib_feature_allowed(tcx: TyCtxt<'tcx>, def_id: DefId, feature_gate: Symbo
// However, we cannot allow stable `const fn`s to use unstable features without an explicit
// opt-in via `allow_internal_unstable`.
attr::allow_internal_unstable(&tcx.sess, &tcx.get_attrs(def_id))
.map_or(false, |mut features| features.any(|name| name == feature_gate))
super::check_consts::allow_internal_unstable(tcx, def_id, feature_gate)
}
fn check_terminator(