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-rw-r--r--crates/ra_hir_ty/src/traits/chalk.rs5
1 files changed, 3 insertions, 2 deletions
diff --git a/crates/ra_hir_ty/src/traits/chalk.rs b/crates/ra_hir_ty/src/traits/chalk.rs
index 55eb0ffcb..b43e2a539 100644
--- a/crates/ra_hir_ty/src/traits/chalk.rs
+++ b/crates/ra_hir_ty/src/traits/chalk.rs
@@ -795,8 +795,9 @@ impl<'a> chalk_solve::RustIrDatabase<Interner> for ChalkContext<'a> {
795 fn well_known_trait_id( 795 fn well_known_trait_id(
796 &self, 796 &self,
797 _well_known_trait: chalk_rust_ir::WellKnownTrait, 797 _well_known_trait: chalk_rust_ir::WellKnownTrait,
798 ) -> chalk_ir::TraitId<Interner> { 798 ) -> Option<chalk_ir::TraitId<Interner>> {
799 unimplemented!() 799 // FIXME tell Chalk about well-known traits (here and in trait_datum)
800 None
800 } 801 }
801} 802}
802 803