[libcxx-commits] [libcxx] db7db68 - [libc++] Use __is_array if the builtin is fixed (#93037)

[via libcxx-commits]

Author: Nikolas Klauser
Date: 2024-07-05T13:12:33+02:00
New Revision: db7db687a6b72f79ecd165603e805c4292ddfd6d

URL: https://github.com/llvm/llvm-project/commit/db7db687a6b72f79ecd165603e805c4292ddfd6d
DIFF: https://github.com/llvm/llvm-project/commit/db7db687a6b72f79ecd165603e805c4292ddfd6d.diff

LOG: [libc++] Use __is_array if the builtin is fixed (#93037)

Added: 
    

Modified: 
    libcxx/include/__type_traits/is_array.h

Removed: 
    


################################################################################
diff  --git a/libcxx/include/__type_traits/is_array.h b/libcxx/include/__type_traits/is_array.h
index 5b0e0e6f46b818..dc23de28d2c63b 100644
--- a/libcxx/include/__type_traits/is_array.h
+++ b/libcxx/include/__type_traits/is_array.h
@@ -19,9 +19,8 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-// TODO: Clang incorrectly reports that __is_array is true for T[0].
-//       Re-enable the branch once https://llvm.org/PR54705 is fixed.
-#if __has_builtin(__is_array) && 0
+#if __has_builtin(__is_array) &&                                                                                       \
+    (!defined(_LIBCPP_COMPILER_CLANG_BASED) || (defined(_LIBCPP_CLANG_VER) && _LIBCPP_CLANG_VER >= 1900))
 
 template <class _Tp>
 struct _LIBCPP_TEMPLATE_VIS is_array : _BoolConstant<__is_array(_Tp)> {};