1 files changed, 38 insertions, 0 deletions
diff --git a/ext/-test-/array/concat/to_ary_concat.c b/ext/-test-/array/concat/to_ary_concat.c
new file mode 100644
index 0000000000..07a96d3907
--- /dev/null
+++ b/ext/-test-/array/concat/to_ary_concat.c
@@ -0,0 +1,38 @@
+#include "ruby.h"
+
+// Bar
+
+typedef struct {
+    int dummy;
+} Bar;
+
+static rb_data_type_t Bar_type = {
+    "Bar",
+    {NULL, RUBY_TYPED_DEFAULT_FREE, NULL },
+};
+
+static VALUE
+Bar_alloc(VALUE klass)
+{
+    return TypedData_Wrap_Struct(klass, &Bar_type, NULL);
+}
+
+static VALUE
+Bar_to_ary(VALUE _self)
+{
+    VALUE ary = rb_ary_new2(2);
+    VALUE foo = rb_ary_new2(0);
+    rb_ary_push(ary, foo);
+    rb_ary_push(ary, foo);
+    rb_ary_push(ary, foo);
+    return ary;
+}
+
+void
+Init_to_ary_concat(void)
+{
+    VALUE mBug = rb_define_module("Bug");
+    VALUE bar = rb_define_class_under(mBug, "Bar", rb_cObject);
+    rb_define_alloc_func(bar, Bar_alloc);
+    rb_define_method(bar, "to_ary", Bar_to_ary, 0);
+}