1/* Determine whether block of given size can be allocated on the stack or not.
2 Copyright (C) 2002-2020 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 License as
7 published by the Free Software Foundation; either version 2.1 of the
8 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; see the file COPYING.LIB. If
17 not, see <https://www.gnu.org/licenses/>. */
18
19#include <alloca.h>
20#include <limits.h>
21
22
23extern __always_inline
24int
25__libc_use_alloca (size_t size)
26{
27 return (__glibc_likely (__libc_alloca_cutoff (size))
28#ifdef PTHREAD_STACK_MIN
29 || __glibc_likely (size <= PTHREAD_STACK_MIN / 4)
30#endif
31 );
32}
33