sysdeps/x86_64/x32/tst-size_t-strncat.c

   1 /* Test strncat with size_t in the lower 32 bits of 64-bit register.
   2    Copyright (C) 2022-2023 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 #define TEST_NAME "strncat"
  20 #include "test-size_t.h"
  21
  22 IMPL (strncat, 1)
  23
  24 typedef char *(*proto_t) (char *, const char*, size_t);
  25
  26 static void *
  27 __attribute__ ((noinline, noclone))
  28 do_strncat (parameter_t a, parameter_t b)
  29 {
  30   return CALL (&b, a.p, b.p, a.len);
  31 }
  32
  33 static int
  34 test_main (void)
  35 {
  36   test_init ();
  37
  38   parameter_t dest = { { page_size - 1 }, buf1 };
  39   parameter_t src = { { 0 }, buf2 };
  40
  41   int ret = 0;
  42   FOR_EACH_IMPL (impl, 0)
  43     {
  44       src.fn = impl->fn;
  45       buf1[0] = '\0';
  46       do_strncat (dest, src);
  47       int res = strncmp (dest.p, src.p, dest.len);
  48       if (res)
  49         {
  50           error (0, 0, "Wrong result in function %s: %i != 0",
  51                  impl->name, res);
  52           ret = 1;
  53         }
  54     }
  55
  56   return ret ? EXIT_FAILURE : EXIT_SUCCESS;
  57 }
  58
  59 #include <support/test-driver.c>