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/* Copyright (C) 2009-2021 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
<https://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)
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