commit 34f8fe29a9398666ce16afdb3ca6833e8ce6b9ca
author Mark de Wever <koraq@xs4all.nl> Sun Nov 28 13:17:04 2021 +0100
committer Copybara-Service <copybara-worker@google.com> Sun Nov 28 06:21:00 2021 -0800
tree 3c9e28a75a0b6459e9ab86680b670805d5ecef39
parent 3e6700b1ff34626f767fcbeaeeedb57f2bb05bd6

[libc++] Remove support for Clang 9 and older.

I encountered this while reviewing an unrelated patch. Will land after
the CI passes.

Reviewed By: #libc, Mordante

Differential Revision: https://reviews.llvm.org/D114673

GitOrigin-RevId: 730dccb98622a82d1cad65e784ce5a8e8323e8cb

include/type_traits

diff --git a/include/type_traits b/include/type_traits
index e9d5e06..bfb6fcb 100644
--- a/include/type_traits
+++ b/include/type_traits
@@ -1416,9 +1416,7 @@
 
 // is_signed
 
-// Before Clang 10, __is_signed didn't work for floating-point types or enums.
-#if __has_keyword(__is_signed) &&                                              \
-    !(defined(_LIBCPP_CLANG_VER) && _LIBCPP_CLANG_VER < 1000)
+#if __has_keyword(__is_signed)
 
 template<class _Tp>
 struct _LIBCPP_TEMPLATE_VIS is_signed : _BoolConstant<__is_signed(_Tp)> { };