[ruby-core:26312] Re: Which commit fixed Set#hash (Hash#hash, I assume) between 1.9.1 and 1.9.2?

> Does the difference lie in r22308? The commit message says ‘always
> return a fixnum value because a return value of rb_hash may be
> used as a hash value itself and bignums have no unique VALUE’:
> http://redmine.ruby-lang.org/repositories/diff/ruby-19?rev=22308

Ok, it seems I confirmed the problem:

$ ruby -rset -ve 'p Set[2305860601668175887].hash == Set[2305860601668175887].hash'
ruby 1.9.1p243 (2009-07-16 revision 24175) [x86_64-linux]
false

While current branches/ruby_1_9_1 + r22308:

$ ruby -rset -ve 'p Set[2305860601668175887].hash == Set[2305860601668175887].hash'
ruby 1.9.1p291 (2009-10-25) [x86_64-linux]
true

> If this is indeed a fix to the above, I’d definitely
> vote for backporting this commit to branches/ruby_1_9_1

Backport request filed as #2275.

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