--- ttmkfdir-3.0.9/directory.cpp.back	2005-10-08 14:25:37.839328408 +0800
+++ ttmkfdir-3.0.9/directory.cpp	2005-10-08 14:26:00.021956136 +0800
@@ -13,6 +13,10 @@
 directory::scan (const std::string &dir)
 {
     DIR *ttfdir = opendir(dir.c_str ());
+    if (!ttfdir) {
+        printf("%s is not exist!\n", dir.c_str ());
+        exit(-1);
+    }
 
     this->clear ();
     dirpath = dir;