From: "Shot (Piotr Szotkowski)" <shot@...>
Date: 2009-08-30T09:41:59+09:00
Subject: [ruby-core:25190] Re: Set#hash different for two Sets which are	eql?


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Shot (Piotr Szotkowski):

> >> i =3D 2305860601668175887
> =3D> 2305860601668175887

[=E2=80=A6]

> ruby 1.8.6 (2009-06-08 patchlevel 369) [x86_64-linux]
> and
> jruby 1.3.1 (ruby 1.8.6p287) (2009-06-15 2fd6c3d) (Java HotSpot(TM) 64-Bi=
t Server VM 1.6.0_14) [amd64-java]
> seem to implement Set#eql? different:

> >> Set[i].eql? Set[i]
> =3D> false
> >> Set[i].hash =3D=3D Set[i].hash
> =3D> false

> While JRuby with the --1.9 switch
> jruby 1.3.1 (ruby 1.9.1p0) (2009-06-15 2fd6c3d) (Java HotSpot(TM) 64-Bit =
Server VM 1.6.0_14) [amd64-java]
> gets it right:

I just chekced JRuby=E2=80=99s trunk, and it seems they switched
=66rom 1.8.6 compatibility to 1.8.7 compatibility, as both
jruby 1.4.0dev (ruby 1.9.1p0) (2009-08-30 38fdbf9) (Java HotSpot(TM) 64-Bit=
 Server VM 1.6.0_14) [amd64-java]
and
jruby 1.4.0dev (ruby 1.8.7p174) (2009-08-30 38fdbf9) (Java HotSpot(TM) 64-B=
it Server VM 1.6.0_14) [amd64-java]
return the same hashes for Set[2305860601668175887] (and consider two
such sets eql?), which seems like the right result from my point of
view.

=E2=80=94 Shot
--=20
221 2.7.0 Error: I can break rules, too. Goodbye. [Postfix]

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