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-rw-r--r--src/class.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/src/class.c b/src/class.c
index 2961284f5..65d21ad4f 100644
--- a/src/class.c
+++ b/src/class.c
@@ -2078,6 +2078,14 @@ mrb_mod_eqq(mrb_state *mrb, mrb_value mod)
}
static mrb_value
+mrb_mod_dup(mrb_state *mrb, mrb_value self)
+{
+ mrb_value mod = mrb_obj_clone(mrb, self);
+ MRB_UNSET_FROZEN_FLAG(mrb_obj_ptr(mod));
+ return mod;
+}
+
+static mrb_value
mrb_mod_module_function(mrb_state *mrb, mrb_value mod)
{
mrb_value *argv;
@@ -2207,6 +2215,7 @@ mrb_init_class(mrb_state *mrb)
mrb_define_method(mrb, mod, "method_defined?", mrb_mod_method_defined, MRB_ARGS_REQ(1)); /* 15.2.2.4.34 */
mrb_define_method(mrb, mod, "define_method", mod_define_method, MRB_ARGS_ARG(1,1));
mrb_define_method(mrb, mod, "===", mrb_mod_eqq, MRB_ARGS_REQ(1)); /* 15.2.2.4.7 */
+ mrb_define_method(mrb, mod, "dup", mrb_mod_dup, MRB_ARGS_NONE());
mrb_undef_method(mrb, cls, "append_features");
mrb_undef_method(mrb, cls, "extend_object");