2 files changed, 21 insertions, 0 deletions
diff --git a/ext/-test-/typeddata/extconf.rb b/ext/-test-/typeddata/extconf.rb
new file mode 100644
index 0000000000..02e3e41c8b
--- /dev/null
+++ b/ext/-test-/typeddata/extconf.rb
@@ -0,0 +1 @@
+create_makefile("-test-/typeddata/typeddata")
diff --git a/ext/-test-/typeddata/typeddata.c b/ext/-test-/typeddata/typeddata.c
new file mode 100644
index 0000000000..1c5d677713
--- /dev/null
+++ b/ext/-test-/typeddata/typeddata.c
@@ -0,0 +1,20 @@
+#include <ruby.h>
+
+static const rb_data_type_t test_data = {
+    "typed_data",
+};
+
+static VALUE
+test_check(VALUE self, VALUE obj)
+{
+    rb_check_typeddata(obj, &test_data);
+    return obj;
+}
+
+void
+Init_typeddata(void)
+{
+    VALUE mBug = rb_define_module("Bug");
+    VALUE klass = rb_define_class_under(mBug, "TypedData", rb_cData);
+    rb_define_singleton_method(klass, "check", test_check, 1);
+}