1  /* libc-internal assert that calls __libc_message.
       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  #include <_itoa.h>
      20  #include <array_length.h>
      21  #include <intprops.h>
      22  #include <stdio.h>
      23  
      24  void
      25  __libc_assert_fail (const char *assertion, const char *file, unsigned int line,
      26                      const char *function)
      27  {
      28    char linebuf[INT_BUFSIZE_BOUND (unsigned int)];
      29    array_end (linebuf)[-1] = '\0';
      30    char *linestr = _itoa_word (line, array_end (linebuf) - 1, 10, 0);
      31    __libc_message ("Fatal glibc error: %s:%s (%s): assertion failed: %s\n",
      32                    file, linestr, function, assertion);
      33  }