add an sscanf regression test

[libc-test] / src / common / path.c

#include <string.h>
#include <stdio.h>
#include "test.h"

/* relative path to p */
char *t_pathrel(char *buf, size_t n, char *argv0, char *p)
{
        char *s = strrchr(argv0, '/');
        int k;

        if (s)
                k = snprintf(buf, n, "%.*s/%s", (int)(s-argv0), argv0, p);
        else
                k = snprintf(buf, n, "./%s", p);
        if ((size_t)k >= n)
                return 0;
        return buf;
}