/*
 * Copyright (C) 2013-2021 Canonical, Ltd.
 * Copyright (C) 2022-2023 Colin Ian King.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */
#include <ucontext.h>

void func(void)
{
	/* Just return */
}


int main(void)
{
	static unsigned char stack[63336];

	ucontext_t u1, u2;
	if (getcontext(&u2) < 0)
		return -1;
	u2.uc_stack.ss_sp = stack;
	u2.uc_stack.ss_size = sizeof(stack);
	u2.uc_link = &u1;

	makecontext(&u2, func, 0);

	if (swapcontext(&u1, &u2) < 0)
		return -1;
	return 0;
}
