Android NDK r29 support + Release Notes

Author: H-G-Hristov

libcxx/docs/ReleaseNotes/21.rst

@@ -40,6 +40,7 @@ Implemented Papers
 
 - N4258: Cleaning-up noexcept in the Library (`Github <https://github.com/llvm/llvm-project/issues/99937>`__)
 - P1361R2: Integration of chrono with text formatting (`Github <https://github.com/llvm/llvm-project/issues/100014>`__)
+- P2255R2: A type trait to detect reference binding to temporary (implemented the type traits only) (`Github <https://github.com/llvm/llvm-project/issues/105180>`)
 
 Improvements and New Features
 -----------------------------

libcxx/include/__config

@@ -1224,7 +1224,7 @@ typedef __char32_t char32_t;
 #  endif
 
 // TODO(LLVM 22): Remove this macro once LLVM19 support ends.
-#  if __has_builtin(__reference_converts_from_temporary) || (defined(_LIBCPP_CLANG_VER) && (_LIBCPP_CLANG_VER == 1901))
+#  if __has_builtin(__reference_converts_from_temporary) || (defined(_LIBCPP_CLANG_VER) && (_LIBCPP_CLANG_VER >= 1901))
 #    define _LIBCPP_HAS_REFERENCE_CONVERTS_FROM_TEMPORARY 1
 #  else
 #    define _LIBCPP_HAS_REFERENCE_CONVERTS_FROM_TEMPORARY 0

libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/reference_converts_from_temporary.pass.cpp

@@ -9,7 +9,7 @@
 // REQUIRES: std-at-least-c++23
 
 // These compilers don't support std::reference_converts_from_temporary yet.
-// UNSUPPORTED: android, apple-clang-15, apple-clang-16, clang-18
+// UNSUPPORTED: android && clang-19.0, apple-clang-15, apple-clang-16, clang-18
 
 // <type_traits>