1 files changed, 1 insertions, 1 deletions
diff --git a/ruby.c b/ruby.c
index 121ddc6432..f6c3a43f80 100644
--- a/ruby.c
+++ b/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);
     }