Merge pull request #267 from CaseyCarter/join_view

join_view: implement P/R of ericniebler/stl2#606
CaseyCarter · Jan 8, 2019 · a8115ad · a8115ad
2 parents 5a60702 + 9d8b39b
commit a8115ad
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/include/stl2/view/join.hpp b/include/stl2/view/join.hpp
@@ -206,7 +206,8 @@ STL2_OPEN_NAMESPACE {
 
 		constexpr __iterator& operator--()
 		requires ref_is_glvalue && BidirectionalRange<Base> &&
-			BidirectionalRange<iter_reference_t<iterator_t<Base>>>
+			BidirectionalRange<iter_reference_t<iterator_t<Base>>> &&
+			CommonRange<iter_reference_t<iterator_t<Base>>>
 		{
 			if (outer_ == __stl2::end(parent_->base_)) {
 				inner_ = __stl2::end(*--outer_);
@@ -220,7 +221,8 @@ STL2_OPEN_NAMESPACE {
 
 		constexpr __iterator operator--(int)
 		requires ref_is_glvalue && BidirectionalRange<Base> &&
-			BidirectionalRange<iter_reference_t<iterator_t<Base>>>
+			BidirectionalRange<iter_reference_t<iterator_t<Base>>> &&
+			CommonRange<iter_reference_t<iterator_t<Base>>>
 		{
 			auto tmp = *this;
 			--*this;