--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/objc-obj-c++-shared/F-NSObject.h	Thu Feb 13 11:34:05 2020 +0900
@@ -0,0 +1,33 @@
+/* Copyright (C) 2019 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+#ifndef _OBJC_F_NSOBJECT_H_
+#define _OBJC_F_NSOBJECT_H_
+
+/* This is a workaround to PR90709 for the NeXT runtime.
+   If we're on a system version that has headers with items we can't
+   consume, then use the GNUStep header instead.
+*/
+
+#if __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ >= 1090
+#  import "GNUStep/Foundation/NSObject.h"
+#else 
+#  import <Foundation/NSObject.h>
+#endif
+
+#endif /* _OBJC_F_NSOBJECT_H_ */