hack

Author: lcnr

compiler/rustc_next_trait_solver/src/canonicalizer.rs

@@ -519,12 +519,7 @@ impl<D: SolverDelegate<Interner = I>, I: Interner> TypeFolder<I> for Canonicaliz
                 CanonicalizeMode::Response { .. } => return r,
             },
 
-            ty::ReEarlyParam(_) | ty::ReLateParam(_) => match self.canonicalize_mode {
-                CanonicalizeMode::Input { .. } => CanonicalVarKind::Region(ty::UniverseIndex::ROOT),
-                CanonicalizeMode::Response { .. } => {
-                    panic!("unexpected region in response: {r:?}")
-                }
-            },
+            ty::ReEarlyParam(_) | ty::ReLateParam(_) => return r,
 
             ty::RePlaceholder(placeholder) => match self.canonicalize_mode {
                 // We canonicalize placeholder regions as existentials in query inputs.

compiler/rustc_next_trait_solver/src/solve/assembly/mod.rs

@@ -1069,7 +1069,7 @@ where
             ty::ReStatic | ty::ReError(_) => ControlFlow::Continue(()),
             ty::ReVar(_) | ty::RePlaceholder(_) => ControlFlow::Break(Ok(())),
             ty::ReErased | ty::ReEarlyParam(_) | ty::ReLateParam(_) | ty::ReBound(..) => {
-                unreachable!()
+                ControlFlow::Break(Ok(()))
             }
         }
     }