From: Aaron Patterson <tenderlove@...>
Date: 2012-10-17T09:56:06+09:00
Subject: [ruby-core:48040] Should Hash#dup automatically rehash


--bp/iNruPH9dso1Pn
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

Hi,

I broke the build!  I'm sorry.  :-(

It turns out that Set depends on Hash#dup to automatically rehash.  For
example:

    require 'minitest/autorun'
    class TestMutateHash < MiniTest::Unit::TestCase
      def test_dup_square
        set1 =3D { }
        set2 =3D { set1 =3D> true}
   =20
        set1[set1] =3D true
   =20
        dup =3D Hash[set2]
   =20
        refute_equal set2, dup
        assert_equal set2, dup.rehash
      end
   =20
      def test_dup_regular
        set1 =3D { }
        set2 =3D { set1 =3D> true}
   =20
        set1[set1] =3D true
   =20
        dup =3D set2.dup
   =20
        assert_equal set2, dup.rehash # passes before r37232
      end
    end

Is it expected that dup will rehash?  If so, I'll fix initialize_copy to
rehash.  If not, we should probably fix Set to rehash.

Thanks!

--=20
Aaron Patterson
http://tenderlovemaking.com/

--bp/iNruPH9dso1Pn
Content-Type: application/pgp-signature

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (Darwin)

iQEcBAEBAgAGBQJQfgIdAAoJEJUxcLy0/6/GBUYH/0VDhQgonZGBGlF8j+eUdNl6
TpYWLsRHKRd3tFXu215SFz4opBByBhi8YUutQxh9ca+0s1bNupzrjwG0xdJFXGjt
JIS80qHio/q4B/EbatEERty6Asa5q6fWiZjUWiP1plfHQeTSuuN8wqiZpuv/LHpJ
hkOjvMFgMxib6WOkRIJ1nAY0ggP/iBjgm/OgqBbhGSN/dD5F7AklUJ8ea/wOW/Gz
KFPEVfVCjqs44pASSVi8EAQak9jOpbck5FHBb2ij+TFJcuVKmw3qvNOu27t1pDjr
KqX2/tWUlXfQ1EILLZuc2No58NfCl3t/3RDDefcOF2yN7aaqDgaRxMFncFq8xVg=
=6zvo
-----END PGP SIGNATURE-----

--bp/iNruPH9dso1Pn--