* ruby.c (require_libraries): req_list may be NULL. [ruby-dev:35008]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@17042 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,7 @@
+Mon Jun  9 15:37:38 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
+
+	* ruby.c (require_libraries): req_list may be NULL.  [ruby-dev:35008]
+
 Mon Jun  9 14:18:01 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* vm_core.h (struct rb_vm_struct): moved src_encoding_index,

ruby.c

@@ -455,7 +455,7 @@ require_libraries(struct cmdline_options *opt)
     ID require = rb_intern("require");
 
     Init_ext();		/* should be called here for some reason :-( */
-    while (RARRAY_LEN(list)) {
+    while (list && RARRAY_LEN(list) > 0) {
 	VALUE feature = rb_ary_shift(list);
 	rb_funcall2(rb_vm_top_self(), require, 1, &feature);
     }