/* Copyright (C) 2001-2014 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see <http://www.gnu.org/licenses/>. */ #include <stdio.h> #include <stdlib.h> int global; int *ip; extern void dummy (void); extern void foo (void *p); void dummy (void) { printf ("This is %s\n", __FUNCTION__); *ip = global = 1; } void foo (void *p) { extern void *__dso_handle __attribute__ ((__weak__)); printf ("This is %s\n", __FUNCTION__); atexit (dummy); if (&__dso_handle) puts ("have dso handle"); else puts ("no dso handle"); ip = p; }