[libcxx-commits] [libcxx] [libc++] Implement P2988R12: `std::optional<T&> (PR #155202)

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``````````diff
--- generate_feature_test_macro_components.py	2025-08-25 04:03:37.000000 +0000
+++ generate_feature_test_macro_components.py	2025-08-25 04:25:47.517264 +0000
@@ -1003,11 +1003,11 @@
             "name": "__cpp_lib_optional",
             "values": {
                 "c++17": 201606,
                 "c++20": 202106,  # P2231R1 Missing constexpr in std::optional and std::variant
                 "c++23": 202110,  # P0798R8 Monadic operations for std::optional + LWG3621 Remove feature-test macro __cpp_lib_monadic_optional
-                "c++26": 202506   # P2988R12: std::optional<T&>
+                "c++26": 202506,  # P2988R12: std::optional<T&>
             },
             "headers": ["optional"],
         },
         {
             "name": "__cpp_lib_optional_range_support",

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https://github.com/llvm/llvm-project/pull/155202