/usr/arm-linux-gnueabihf/include/alloca.h is in libc6-dev-armhf-cross 2.27-3ubuntu1cross1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 | /* Copyright (C) 1992-2018 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/>. */
#ifndef _ALLOCA_H
#define _ALLOCA_H 1
#include <features.h>
#define __need_size_t
#include <stddef.h>
__BEGIN_DECLS
/* Remove any previous definitions. */
#undef alloca
/* Allocate a block that will be freed when the calling function exits. */
extern void *alloca (size_t __size) __THROW;
#ifdef __GNUC__
# define alloca(size) __builtin_alloca (size)
#endif /* GCC. */
__END_DECLS
#endif /* alloca.h */
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