2 files changed, 4 insertions, 4 deletions
diff --git a/gcc/rust/util/rust-hir-map.cc b/gcc/rust/util/rust-hir-map.cc
index e2c3b98..f124be8 100644
--- a/gcc/rust/util/rust-hir-map.cc
+++ b/gcc/rust/util/rust-hir-map.cc
@@ -652,18 +652,18 @@ void
 Mappings::insert_hir_self_param (HIR::SelfParam *param)
 {
   auto id = param->get_mappings ().get_hirid ();
-  rust_assert (lookup_hir_self_param (id) == nullptr);
+  rust_assert (!lookup_hir_self_param (id));
 
   hirSelfParamMappings[id] = param;
   insert_node_to_hir (param->get_mappings ().get_nodeid (), id);
 }
 
-HIR::SelfParam *
+tl::optional<HIR::SelfParam *>
 Mappings::lookup_hir_self_param (HirId id)
 {
   auto it = hirSelfParamMappings.find (id);
   if (it == hirSelfParamMappings.end ())
-    return nullptr;
+    return tl::nullopt;
 
   return it->second;
 }
diff --git a/gcc/rust/util/rust-hir-map.h b/gcc/rust/util/rust-hir-map.h
index 6f97dcb..720dd97 100644
--- a/gcc/rust/util/rust-hir-map.h
+++ b/gcc/rust/util/rust-hir-map.h
@@ -164,7 +164,7 @@ public:
   tl::optional<HIR::FunctionParam *> lookup_hir_param (HirId id);
 
   void insert_hir_self_param (HIR::SelfParam *type);
-  HIR::SelfParam *lookup_hir_self_param (HirId id);
+  tl::optional<HIR::SelfParam *> lookup_hir_self_param (HirId id);
 
   void insert_hir_struct_field (HIR::StructExprField *type);
   HIR::StructExprField *lookup_hir_struct_field (HirId id);