#include <stdlib.h>

#include <stdio.h>

#include <string.h>

#include <math.h>

#include <errno.h>

#include <sys/resource.h>

#include "test.h"

static void setrl(int r, long lim)

{

	struct rlimit rl;

	if (getrlimit(r, &rl))

		error("getrlimit %d: %s\n", r, strerror(errno));

	rl.rlim_cur = lim;

	if (setrlimit(r, &rl))

		error("setrlimit %d: %s\n", r, strerror(errno));

}

int main(void)

{

	enum {n = 8*1024*1024};

	char *s = malloc(n);

	int i;

	float f;

	char c;

	if (!s)

		return error("out of memory");

	setrl(RLIMIT_STACK, 128*1024);

	for (i = 0; i < n; i++) s[i] = '1';

	s[n-3] = ' ';

	s[n-1] = 0;

	/*

	 * stack overflow if scanf copies s on the stack (glibc)

	 * same issue with %d except then storing the conversion

	 * result is undefined behaviour

	 */

	i = sscanf(s, "%f %c", &f, &c);

	if (i != 2)

		error("sscanf returned %d, want 2\n", i);

	if (f != INFINITY)

		error("sscanf(longnum, \"%%f\") read %f, want inf\n", f);

	if (c != '1')

		error("sscanf(\"1\", %%c) read '%c', want '1'\n", c);

	free(s);

	return test_status;

}