Issue #2561 has been updated by Kurt  Stephens.

File ruby-1.8.7-rational.patch added
File gcd_test.rb added

Fixed Fixnum#gcd for FIXNUM_MIN.

Ref: http://github.com/kstephens/rubyenterpriseedition187/commit/877d5e4c7892248bb7486f24c076cb23d565a466

gcd_test.rb should pass on 32-bit builds.

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http://redmine.ruby-lang.org/issues/show/2561

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