stdio-common/tst-printf-fp-free.c

   1 /* Test double free bug in __printf_fp_l (bug 26214).
   2    Copyright (C) 2020-2023 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <mcheck.h>
  20 #include <stdio.h>
  21 #include <sys/resource.h>
  22 #include <support/check.h>
  23
  24 static int
  25 do_test (void)
  26 {
  27   mtrace ();
  28   FILE *fp = fopen ("/dev/full", "w");
  29   TEST_VERIFY_EXIT (fp != NULL);
  30   char buf[131072];
  31   TEST_VERIFY_EXIT (setvbuf (fp, buf, _IOFBF, sizeof buf) == 0);
  32   TEST_COMPARE (fprintf (fp, "%-1000000.65536f", 1.0), -1);
  33   fclose (fp);
  34   return 0;
  35 }
  36
  37 #include <support/test-driver.c>