strerror-test.c

strerror-test.c (text/x-csrc), 501 bytes, created by Alon Bar-Lev (RETIRED) on 2013-11-29 22:22:17 UTC

#include <stdio.h>
#include <errno.h>
#include <string.h>
extern int __xpg_strerror_r(int, char *, size_t);

int
main ()
{
	int result = 0;
	char buf[256] = "^";
	char copy[256];
	char *str = strerror (-1);
	strcpy (copy, str);
	memset(buf, 0, sizeof(buf));
	if (__xpg_strerror_r (-2, buf, 1) == 0)
		result |= 1;
	if (*buf) {
		printf("Bad buffer? '%s'\n", buf);
		result |= 2;
	}
	__xpg_strerror_r (-2, buf, 256);
	if (strcmp (str, copy))
		result |= 4;
	printf("%02x\n", result);
	return result;
}