/* Test that glibc.malloc.mxfast tunable works.

   Copyright (C) 2019 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/>.  */

/* This test verifies that setting the glibc.malloc.mxfast tunable to

   zero results in free'd blocks being returned to the small bins, not

   the fast bins.  */

#include <malloc.h>

#include <support/check.h>

int

do_test (void)

{

  struct mallinfo m;

  char *volatile p1;

  char *volatile p2;

  /* Arbitrary value; must be in default fastbin range.  */

  p1 = malloc (3);

  /* Something large so that p1 isn't a "top block" */

  p2 = malloc (512);

  free (p1);

  m = mallinfo ();

  /* This will fail if there are any blocks in the fastbins.  */

  TEST_COMPARE (m.smblks, 0);

  /* To keep gcc happy.  */

  free (p2);

  return 0;

}

#include <support/test-driver.c>