1 files changed, 5 insertions, 0 deletions
diff --git a/spec/ruby/optional/capi/ext/class_id_under_autoload_spec.c b/spec/ruby/optional/capi/ext/class_id_under_autoload_spec.c
new file mode 100644
index 0000000000..64393a9397
--- /dev/null
+++ b/spec/ruby/optional/capi/ext/class_id_under_autoload_spec.c
@@ -0,0 +1,5 @@
+#include "ruby.h"
+
+void Init_class_id_under_autoload_spec(void) {
+  rb_define_class_id_under(rb_cObject, rb_intern("ClassIdUnderAutoload"), rb_cObject);
+}