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[libc++] Guard optional::iterator range variables behind experimental #175222

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Merged
frederick-vs-ja merged 2 commits into from
Jan 10, 2026
+3 −3
Merged

[libc++] Guard optional::iterator range variables behind experimental #175222

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316c461
Guard range variables behind experimental optional iterator
smallp-o-p Jan 9, 2026
78ddf02
module inc
smallp-o-p Jan 9, 2026
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2 changes: 1 addition & 1 deletion libcxx/include/optional
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Original file line number Diff line number Diff line change
Expand Up @@ -661,7 +661,7 @@ using __optional_sfinae_assign_base_t _LIBCPP_NODEBUG =
template <class _Tp>
class optional;

# if _LIBCPP_STD_VER >= 26
# if _LIBCPP_STD_VER >= 26 && _LIBCPP_HAS_EXPERIMENTAL_OPTIONAL_ITERATOR
template <class _Tp>
constexpr bool ranges::enable_view<optional<_Tp>> = true;

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4 changes: 2 additions & 2 deletions libcxx/modules/std/optional.inc
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Expand Up @@ -10,7 +10,7 @@
export namespace std {
// [optional.optional], class template optional
using std::optional;
#if _LIBCPP_STD_VER >= 26
#if _LIBCPP_STD_VER >= 26 && _LIBCPP_HAS_EXPERIMENTAL_OPTIONAL_ITERATOR
// [optional.iterators], iterator support
namespace ranges {
using std::ranges::enable_borrowed_range;
Expand All @@ -24,7 +24,7 @@ export namespace std {
// [optional.bad.access], class bad_optional_access
using std::bad_optional_access;

#if _LIBCPP_STD_VER >= 26
#if _LIBCPP_STD_VER >= 26 && _LIBCPP_HAS_EXPERIMENTAL_OPTIONAL_ITERATOR
using std::format_kind;
#endif

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