text: /* This testcase is part of GDB, the GNU debugger.
  
     Copyright 2009-2019 Free Software Foundation, Inc.
  
     This program 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 of the License, or
     (at your option) any later version.
  
     This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.  */
  
  #include <stdlib.h>
  
  int main()
  {
    void *p;
  
    p = malloc (1);
    if (p == NULL)
      return 1;
    free (p);
    free (p);	/* double-free */
    return 0;
  }
  