use clippy_utils::diagnostics::span_lint_and_help;
+use rustc_hir::def_id::DefId;
use rustc_hir::{def::Res, HirId, Path, PathSegment};
use rustc_lint::{LateContext, LateLintPass};
+use rustc_middle::ty::DefIdTree;
use rustc_session::{declare_tool_lint, impl_lint_pass};
use rustc_span::{sym, symbol::kw, Span};
fn check_path(&mut self, cx: &LateContext<'tcx>, path: &Path<'tcx>, _: HirId) {
if let Res::Def(_, def_id) = path.res
&& let Some(first_segment) = get_first_segment(path)
+ && is_stable(cx, def_id)
{
let (lint, msg, help) = match first_segment.ident.name {
sym::std => match cx.tcx.crate_name(def_id.krate) {
_ => None,
}
}
+
+/// Checks if all ancestors of `def_id` are stable, to avoid linting
+/// [unstable moves](https://github.com/rust-lang/rust/pull/95956)
+fn is_stable(cx: &LateContext<'_>, mut def_id: DefId) -> bool {
+ loop {
+ if cx
+ .tcx
+ .lookup_stability(def_id)
+ .map_or(false, |stability| stability.is_unstable())
+ {
+ return false;
+ }
+
+ match cx.tcx.opt_parent(def_id) {
+ Some(parent) => def_id = parent,
+ None => return true,
+ }
+ }
+}