+
+char *xstrndup_f(const char *s, size_t n, const char *file, int line)
+{
+ size_t l = strlen(s);
+ if (l < n)
+ return xstrdup_f(s, file, line);
+ {
+ char *a = (char*) xmalloc_f(n+1, file, line);
+ memcpy(a, s, n);
+ a[n] = '\0';
+ return a;
+ }
+}
+