initial commit

Author: changkhothuychung

libcxx/include/__ranges/common_view.h

@@ -58,7 +58,7 @@ class common_view : public view_interface<common_view<_View>> {
 
   _LIBCPP_HIDE_FROM_ABI constexpr _View base() && { return std::move(__base_); }
 
-  _LIBCPP_HIDE_FROM_ABI constexpr auto begin() {
+  _LIBCPP_HIDE_FROM_ABI constexpr auto begin() requires (!__simple_view<_View>) {
     if constexpr (random_access_range<_View> && sized_range<_View>)
       return ranges::begin(__base_);
     else
@@ -74,7 +74,7 @@ class common_view : public view_interface<common_view<_View>> {
       return common_iterator<iterator_t<const _View>, sentinel_t<const _View>>(ranges::begin(__base_));
   }
 
-  _LIBCPP_HIDE_FROM_ABI constexpr auto end() {
+  _LIBCPP_HIDE_FROM_ABI constexpr auto end() requires (!__simple_view<_View>) {
     if constexpr (random_access_range<_View> && sized_range<_View>)
       return ranges::begin(__base_) + ranges::size(__base_);
     else