From 31ef3124a9db534abcc3e323f5d3cb696eda3bf5 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Wed, 22 Feb 2017 02:02:11 +0000
Subject: numeric.c: Numeric#clone and #dup

* numeric.c (num_clone, num_dup): no longer raises TypeError,
  returns the receiver instead as well as Integer and Float.
  [ruby-core:79636] [Bug #13237]

* object.c (rb_immutable_obj_clone): immutable object clone with
  freeze optional keyword argument.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57682 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 numeric.c | 33 +++++++++++++++++++++++++++------
 1 file changed, 27 insertions(+), 6 deletions(-)

(limited to 'numeric.c')

diff --git a/numeric.c b/numeric.c
index 1a685ed252..65edfec205 100644
--- a/numeric.c
+++ b/numeric.c
@@ -552,18 +552,38 @@ num_sadded(VALUE x, VALUE name)
     UNREACHABLE;
 }
 
+#if 0
 /*
- * Numerics are immutable values, which should not be copied.
+ *  call-seq:
+ *     num.clone(freeze: true) -> num
  *
- * Any attempt to use this method on a Numeric will raise a TypeError.
+ *  Returns the receiver.
+ *  _freeze_ cannot be +false+.
  */
 static VALUE
-num_init_copy(VALUE x, VALUE y)
+num_clone(int argc, VALUE *argv, VALUE x)
 {
-    rb_raise(rb_eTypeError, "can't copy %"PRIsVALUE, rb_obj_class(x));
+    return rb_immutable_obj_clone(argc, argv, x);
+}
+#else
+# define num_clone rb_immutable_obj_clone
+#endif
 
-    UNREACHABLE;
+#if 0
+/*
+ *  call-seq:
+ *     num.dup -> num
+ *
+ *  Returns the receiver.
+ */
+static VALUE
+num_dup(VALUE x)
+{
+    return x;
 }
+#else
+# define num_dup num_uplus
+#endif
 
 /*
  *  call-seq:
@@ -5222,8 +5242,9 @@ Init_Numeric(void)
 
     rb_define_method(rb_cNumeric, "singleton_method_added", num_sadded, 1);
     rb_include_module(rb_cNumeric, rb_mComparable);
-    rb_define_method(rb_cNumeric, "initialize_copy", num_init_copy, 1);
     rb_define_method(rb_cNumeric, "coerce", num_coerce, 1);
+    rb_define_method(rb_cNumeric, "clone", num_clone, -1);
+    rb_define_method(rb_cNumeric, "dup", num_dup, 0);
 
     rb_define_method(rb_cNumeric, "i", num_imaginary, 0);
     rb_define_method(rb_cNumeric, "+@", num_uplus, 0);
-- 
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