1  /* Copyright (C) 2003-2023 Free Software Foundation, Inc.
       2     This file is part of the GNU C Library.
       3  
       4     The GNU C Library is free software; you can redistribute it and/or
       5     modify it under the terms of the GNU Lesser General Public
       6     License as published by the Free Software Foundation; either
       7     version 2.1 of the License, or (at your option) any later version.
       8  
       9     The GNU C Library is distributed in the hope that it will be useful,
      10     but WITHOUT ANY WARRANTY; without even the implied warranty of
      11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      12     Lesser General Public License for more details.
      13  
      14     You should have received a copy of the GNU Lesser General Public
      15     License along with the GNU C Library; if not, see
      16     <https://www.gnu.org/licenses/>.  */
      17  
      18  #include <stddef.h>
      19  #include <stdlib.h>
      20  
      21  static __thread unsigned char foo [32]
      22    __attribute__ ((tls_model ("initial-exec"), aligned (sizeof (void *))));
      23  
      24  void
      25  test1 (void)
      26  {
      27    size_t s;
      28  
      29    for (s = 0; s < sizeof (foo); ++s)
      30      {
      31        if (foo [s])
      32  	abort ();
      33        foo [s] = s;
      34      }
      35  }
      36  
      37  void
      38  test2 (void)
      39  {
      40    size_t s;
      41  
      42    for (s = 0; s < sizeof (foo); ++s)
      43      {
      44        if (foo [s] != s)
      45  	abort ();
      46        foo [s] = sizeof (foo) - s;
      47      }
      48  }