1  /* Make sure blank lines does not cause memory corruption BZ #18887.
       2  
       3     Copyright (C) 2009-2023 Free Software Foundation, Inc.
       4     This file is part of the GNU C Library.
       5  
       6     The GNU C Library is free software; you can redistribute it and/or
       7     modify it under the terms of the GNU Lesser General Public
       8     License as published by the Free Software Foundation; either
       9     version 2.1 of the License, or (at your option) any later version.
      10  
      11     The GNU C Library is distributed in the hope that it will be useful,
      12     but WITHOUT ANY WARRANTY; without even the implied warranty of
      13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      14     Lesser General Public License for more details.
      15  
      16     You should have received a copy of the GNU Lesser General Public
      17     License along with the GNU C Library; if not, see
      18     <https://www.gnu.org/licenses/>.  */
      19  
      20  #include <mntent.h>
      21  #include <stdio.h>
      22  #include <string.h>
      23  
      24  /* Make sure blank lines don't trigger memory corruption.  This doesn't happen
      25     for all targets though, so it's a best effort test BZ #18887.  */
      26  static int
      27  do_test (void)
      28  {
      29    FILE *fp;
      30  
      31    fp = tmpfile ();
      32    fputs ("\n \n/foo\\040dir /bar\\040dir auto bind \t \n", fp);
      33    rewind (fp);
      34  
      35    /* The corruption happens here ...  */
      36    getmntent (fp);
      37    /* ... but triggers here.  */
      38    endmntent (fp);
      39  
      40    /* If the test failed, we would crash, and not hit this point.  */
      41    return 0;
      42  }
      43  
      44  #define TEST_FUNCTION do_test ()
      45  #include "../test-skeleton.c"