Index: libcxx/include/__memory/uninitialized_algorithms.h
===================================================================
--- libcxx/include/__memory/uninitialized_algorithms.h
+++ libcxx/include/__memory/uninitialized_algorithms.h
@@ -573,7 +573,7 @@
           __enable_if_t<
               // using _RawTypeIn because of the allocator<T const> extension
               is_trivially_copy_constructible<_RawTypeIn>::value && is_trivially_copy_assignable<_RawTypeIn>::value &&
-              is_same<__remove_cv_t<_In>, __remove_cv_t<_Out> >::value &&
+              is_same<__remove_const_t<_In>, __remove_const_t<_Out> >::value &&
               __allocator_has_trivial_copy_construct<_Alloc, _RawTypeIn>::value>* = nullptr>
 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _Out*
 __uninitialized_allocator_copy_impl(_Alloc&, _In* __first1, _In* __last1, _Out* __first2) {