libstdc++: Add missing export for std::is_layout_compatible_v [PR120159]

libstdc++-v3/ChangeLog:

	PR libstdc++/120159
	* src/c++23/std.cc.in (is_layout_compatible_v): Export.

(cherry picked from commit 8a1f3615c01cdbf5b2d37448c8bb09a96d5e3330)

diff --git a/libstdc++-v3/src/c++23/std.cc.in b/libstdc++-v3/src/c++23/std.cc.in
index 930a489ff44b24637b4f1fe21e2cf58e20dc5424..de34e649bba968b8c8cf70b98608a9f5a4944eff 100644 (file)
--- a/libstdc++-v3/src/c++23/std.cc.in
+++ b/libstdc++-v3/src/c++23/std.cc.in
@@ -3107,6 +3107,7 @@ export namespace std
 #if __cpp_lib_is_layout_compatible
   using std::is_corresponding_member;
   using std::is_layout_compatible;
+  using std::is_layout_compatible_v;
 #endif
 #if __cpp_lib_is_pointer_interconvertible
   using std::is_pointer_interconvertible_base_of;