1  /* Test strnlen with size_t in the lower 32 bits of 64-bit register.
       2     Copyright (C) 2019-2023 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  #ifdef WIDE
      20  # define TEST_NAME "wcsnlen"
      21  #else
      22  # define TEST_NAME "strnlen"
      23  #endif /* WIDE */
      24  
      25  #include "test-size_t.h"
      26  
      27  #ifdef WIDE
      28  # include <wchar.h>
      29  # define STRNLEN wcsnlen
      30  # define CHAR wchar_t
      31  #else
      32  # define STRNLEN strnlen
      33  # define CHAR char
      34  #endif /* WIDE */
      35  
      36  IMPL (STRNLEN, 1)
      37  
      38  typedef size_t (*proto_t) (const CHAR *, size_t);
      39  
      40  static size_t
      41  __attribute__ ((noinline, noclone))
      42  do_strnlen (parameter_t a, parameter_t b)
      43  {
      44    return CALL (&a, a.p, b.len);
      45  }
      46  
      47  static int
      48  test_main (void)
      49  {
      50    test_init ();
      51  
      52    size_t size = page_size / sizeof (CHAR);
      53    parameter_t src = { { 0 }, buf2 };
      54    parameter_t c = { { size }, (void *) (uintptr_t) 'a' };
      55  
      56    int ret = 0;
      57    FOR_EACH_IMPL (impl, 0)
      58      {
      59        src.fn = impl->fn;
      60        size_t res = do_strnlen (src, c);
      61        if (res != size)
      62  	{
      63  	  error (0, 0, "Wrong result in function %s: 0x%x != 0x%x",
      64  		 impl->name, res, size);
      65  	  ret = 1;
      66  	}
      67      }
      68  
      69    return ret ? EXIT_FAILURE : EXIT_SUCCESS;
      70  }
      71  
      72  #include <support/test-driver.c>