Commit 751375f3ca

Alex Rønne Petersen <alex@alexrp.com>
2025-10-17 14:59:22
libcxx: backport llvm/llvm-project#158347
https://github.com/llvm/llvm-project/pull/158347
master
1 parent 2357ae0
Changed files (1)
lib
libcxx
include
__ranges
join_view.h
lib/libcxx/include/__ranges/join_view.h
@@ -410,8 +410,13 @@ struct __segmented_iterator_traits<_JoinViewIterator> {
 
   static constexpr _LIBCPP_HIDE_FROM_ABI _JoinViewIterator
   __compose(__segment_iterator __seg_iter, __local_iterator __local_iter) {
-    return _JoinViewIterator(
-        std::move(__seg_iter).__get_data(), std::move(__seg_iter).__get_iter(), std::move(__local_iter));
+    auto&& __parent = std::move(__seg_iter).__get_data();
+    auto&& __outer  = std::move(__seg_iter).__get_iter();
+    if (__local_iter == ranges::end(*__outer)) {
+      ++__outer;
+      return _JoinViewIterator(*__parent, __outer);
+    }
+    return _JoinViewIterator(__parent, __outer, std::move(__local_iter));
   }
 };