* gc.c (rb_data_object_alloc): check klass only if klass is not 0.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40686 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/gc.c b/gc.c
index d0294cbc26..fbdc964514 100644
--- a/gc.c
+++ b/gc.c
@@ -716,7 +716,7 @@ VALUE
 rb_data_object_alloc(VALUE klass, void *datap, RUBY_DATA_FUNC dmark, RUBY_DATA_FUNC dfree)
 {
     NEWOBJ_OF(data, struct RData, klass, T_DATA);
-    Check_Type(klass, T_CLASS);
+    if (klass) Check_Type(klass, T_CLASS);
     data->data = datap;
     data->dfree = dfree;
     data->dmark = dmark;