Recommit rL245802: Cleanup fancy pointer rebinding in list using __rebind_pointer.
Currently we need an #ifdef branch every time we use pointer traits to rebind a pointer because
it is done differently in C++11 and C++03. This patch introduces the __rebind_pointer utility to
clean this up.
Also add a test that list and it's iterators can be instantiated with incomplete element types.
llvm-svn: 245806
diff --git a/libcxx/include/memory b/libcxx/include/memory
index 38ce433..9d214be 100644
--- a/libcxx/include/memory
+++ b/libcxx/include/memory
@@ -932,6 +932,15 @@
{return _VSTD::addressof(__r);}
};
+template <class _From, class _To>
+struct __rebind_pointer {
+#ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
+ typedef typename pointer_traits<_From>::template rebind<_To> type;
+#else
+ typedef typename pointer_traits<_From>::template rebind<_To>::other type;
+#endif
+};
+
// allocator_traits
namespace __has_pointer_type_imp