libstdc++: Export std::allocation_result in std.cc [PR118030]

allocation_result has been added in PR118030 P0401 r16-7986 but
not exported in std module.

2026-03-19  Jakub Jelinek  <jakub@redhat.com>

	PR libstdc++/118030
	* src/c++23/std.cc.in: Add allocation_result.

diff --git a/libstdc++-v3/src/c++23/std.cc.in b/libstdc++-v3/src/c++23/std.cc.in
index 75273ce56c5d52287b00afb505edcae6bc5bba2d..5b0e5c4debd20501219e23353ecb37e917661098 100644 (file)
--- a/libstdc++-v3/src/c++23/std.cc.in
+++ b/libstdc++-v3/src/c++23/std.cc.in
@@ -2055,6 +2055,9 @@ export namespace std
   using std::start_lifetime_as;
   using std::start_lifetime_as_array;
 #endif
+#ifdef __glibcxx_allocate_at_least
+  using std::allocation_result;
+#endif
 }
 
 // 20.4 <memory_resource>