diff --git a/libstdc++-v3/include/bits/shared_ptr_base.h b/libstdc++-v3/include/bits/shared_ptr_base.h
index 15707f8e74a..b24900b2008 100644
--- a/libstdc++-v3/include/bits/shared_ptr_base.h
+++ b/libstdc++-v3/include/bits/shared_ptr_base.h
@@ -450,7 +450,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       }
 
       virtual void*
-      _M_get_deleter(const std::type_info& __ti) noexcept
+      _M_get_deleter(const type_info& __ti [[__gnu__::__unused__]]) noexcept
       {
 #if __cpp_rtti
 	// _GLIBCXX_RESOLVE_LIB_DEFECTS
diff --git a/libstdc++-v3/src/c++11/shared_ptr.cc b/libstdc++-v3/src/c++11/shared_ptr.cc
index 13e2d520199..4678fbeffe2 100644
--- a/libstdc++-v3/src/c++11/shared_ptr.cc
+++ b/libstdc++-v3/src/c++11/shared_ptr.cc
@@ -97,7 +97,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 #endif
 
   bool
-  _Sp_make_shared_tag::_S_eq(const type_info& ti) noexcept
+  _Sp_make_shared_tag::_S_eq(const type_info& ti [[gnu::unused]]) noexcept
   {
 #if __cpp_rtti
     return ti == typeid(_Sp_make_shared_tag);