diff --git a/libstdc++-v3/include/std/ranges b/libstdc++-v3/include/std/ranges index ca62f73ae5d0a5db7e0814b09ae4e9d285d825da..0588bebb351f72f22594ec9fdcded41018c3c2e3 100644 --- a/libstdc++-v3/include/std/ranges +++ b/libstdc++-v3/include/std/ranges @@ -3687,7 +3687,7 @@ namespace views::__adaptor requires sized_sentinel_for<sentinel_t<_Base>, iterator_t<_Base2>> friend constexpr range_difference_t<_Base2> operator-(const _Iterator<_Const2>& __x, const _Sentinel& __y) - { return __x._M_current - __y._M_end; } + { return -__y._M_distance_from(__x); } template<bool _Const2, typename _Base2 = __detail::__maybe_const_t<_Const2, _Vp>> diff --git a/libstdc++-v3/testsuite/std/ranges/adaptors/elements.cc b/libstdc++-v3/testsuite/std/ranges/adaptors/elements.cc index c6839e38ce54c668c351dcb92718b30cc57095cb..1322f44036eef0b7d32411c140752707027be973 100644 --- a/libstdc++-v3/testsuite/std/ranges/adaptors/elements.cc +++ b/libstdc++-v3/testsuite/std/ranges/adaptors/elements.cc @@ -128,7 +128,8 @@ test06() | views::keys; auto b = r.begin(); auto e = r.end(); - e - b; + VERIFY( e - b == 42 ); + VERIFY( b - e == -42 ); } void