bjoernager/rust
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Improve LanguageItems api

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This commit is contained in:
Cameron Steffen 2022-10-26 16:17:59 -05:00
parent 5e97720429
commit 99de57ae13
3 changed files with 43 additions and 28 deletions
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4
compiler/rustc_trait_selection/src/traits/error_reporting/mod.rs
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@ -974,7 +974,7 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
// useful for less general traits.
if peeled
&& !self.tcx.trait_is_auto(def_id)
&& !self.tcx.lang_items().items().contains(&Some(def_id))
&& !self.tcx.lang_items().iter().any(|(_, id)| id == def_id)
{
let trait_ref = trait_pred.to_poly_trait_ref();
let impl_candidates =
@ -1898,7 +1898,7 @@ impl<'tcx> InferCtxtPrivExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
let def_id = trait_ref.def_id();
if impl_candidates.is_empty() {
if self.tcx.trait_is_auto(def_id)
|| self.tcx.lang_items().items().contains(&Some(def_id))
|| self.tcx.lang_items().iter().any(|(_, id)| id == def_id)
|| self.tcx.get_diagnostic_name(def_id).is_some()
{
// Mentioning implementers of `Copy`, `Debug` and friends is not useful.