- Fix bug #7144 (infinite loop sometimes with -q and double-colon rules)

- Resolve support request #103195 (rationalize wordlist fn arguments)

function.c

@@ -771,6 +771,10 @@ func_wordlist (char *o, char **argv, const char *funcname UNUSED)
 		 _("non-numeric second argument to `wordlist' function"));
 
   start = atoi (argv[0]);
+  if (start < 1)
+    fatal (reading_file, "invalid first argument to `wordlist' function: '%d'",
+           message, start);
+
   count = atoi (argv[1]) - start + 1;
 
   if (count > 0)