From c80281a861a0dd0760ea1b0a6230820ecabd7bef Mon Sep 17 00:00:00 2001
From: ouz-a <ouz.agz@gmail.com>
Date: Thu, 10 Aug 2023 19:32:45 +0300
Subject: [PATCH] cover ParamConst

---
 compiler/rustc_smir/src/rustc_smir/mod.rs | 4 +++-
 compiler/rustc_smir/src/stable_mir/ty.rs  | 1 +
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/compiler/rustc_smir/src/rustc_smir/mod.rs b/compiler/rustc_smir/src/rustc_smir/mod.rs
index 07ef53ca304..6d0f02f8f81 100644
--- a/compiler/rustc_smir/src/rustc_smir/mod.rs
+++ b/compiler/rustc_smir/src/rustc_smir/mod.rs
@@ -1136,7 +1136,9 @@ impl<'tcx> Stable<'tcx> for rustc_middle::mir::ConstantKind<'tcx> {
                     let const_val = tables.tcx.valtree_to_const_val((c.ty(), val));
                     stable_mir::ty::ConstantKind::Allocated(new_allocation(self, const_val, tables))
                 }
-                _ => todo!(),
+                ty::ParamCt(param) => stable_mir::ty::ConstantKind::ParamCt(opaque(&param)),
+                ty::ErrorCt(_) => unreachable!(),
+                _ => unimplemented!(),
             },
             ConstantKind::Unevaluated(unev_const, ty) => {
                 stable_mir::ty::ConstantKind::Unevaluated(stable_mir::ty::UnevaluatedConst {
diff --git a/compiler/rustc_smir/src/stable_mir/ty.rs b/compiler/rustc_smir/src/stable_mir/ty.rs
index 14b841a4670..9b2bc972845 100644
--- a/compiler/rustc_smir/src/stable_mir/ty.rs
+++ b/compiler/rustc_smir/src/stable_mir/ty.rs
@@ -401,6 +401,7 @@ pub fn allocation_filter<'tcx>(
 pub enum ConstantKind {
     Allocated(Allocation),
     Unevaluated(UnevaluatedConst),
+    ParamCt(Opaque),
 }
 
 #[derive(Clone, Debug)]