/* Copyright (C) 2009-2018 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/>.  */

#include <errno.h>

#include <printf.h>

#include <stdlib.h>

#include <libc-lock.h>

/* Array of functions indexed by format character.  */

libc_freeres_ptr (printf_va_arg_function **__printf_va_arg_table)

  attribute_hidden;

__libc_lock_define_initialized (static, lock);

/* Last type allocated.  */

static int pa_next_type = PA_LAST;

int

__register_printf_type (printf_va_arg_function fct)

{

  int result = -1;

  __libc_lock_lock (lock);

  if (__printf_va_arg_table == NULL)

    {

      __printf_va_arg_table = (printf_va_arg_function **)

	calloc (0x100 - PA_LAST, sizeof (void *));

      if (__printf_va_arg_table == NULL)

	goto out;

    }

  if (pa_next_type == 0x100)

    __set_errno (ENOSPC);

  else

    {

      result = pa_next_type++;

      __printf_va_arg_table[result - PA_LAST] = fct;

    }

 out:

  __libc_lock_unlock (lock);

  return result;

}

weak_alias (__register_printf_type, register_printf_type)