[libcxx-commits] [libcxx] 4640736 - [libc++] Add missing `std::is_virtual_base_of` to `type_traits.inc` (#107009)

[via libcxx-commits]

Author: Hristo Hristov
Date: 2024-09-03T13:28:36-04:00
New Revision: 46407366166dc84c95075cf273acc005605967fe

URL: https://github.com/llvm/llvm-project/commit/46407366166dc84c95075cf273acc005605967fe
DIFF: https://github.com/llvm/llvm-project/commit/46407366166dc84c95075cf273acc005605967fe.diff

LOG: [libc++] Add missing `std::is_virtual_base_of` to `type_traits.inc` (#107009)

std::is_virtual_base_of was implemented in https://github.com/llvm/llvm-project/pull/105847

Added: 
    

Modified: 
    libcxx/modules/std/type_traits.inc

Removed: 
    


################################################################################
diff  --git a/libcxx/modules/std/type_traits.inc b/libcxx/modules/std/type_traits.inc
index d368daf35ccb8c..485a5ddf63aed0 100644
--- a/libcxx/modules/std/type_traits.inc
+++ b/libcxx/modules/std/type_traits.inc
@@ -114,6 +114,9 @@ export namespace std {
 
   // [meta.rel], type relations
   using std::is_base_of;
+#if _LIBCPP_STD_VER >= 26 && __has_builtin(__builtin_is_virtual_base_of)
+  using std::is_virtual_base_of;
+#endif
   using std::is_convertible;
   // using std::is_layout_compatible;
   using std::is_nothrow_convertible;
@@ -287,6 +290,9 @@ export namespace std {
 
   // [meta.rel], type relations
   using std::is_base_of_v;
+#if _LIBCPP_STD_VER >= 26 && __has_builtin(__builtin_is_virtual_base_of)
+  using std::is_virtual_base_of_v;
+#endif
   using std::is_convertible_v;
   using std::is_invocable_r_v;
   using std::is_invocable_v;