Issue #3803 has been updated by Kenta Murata.

Category set to ext
Target version set to 1.9.3

This is bugs of BigDecimal, which have not been noticed for a long time.
Thank you very much for your report.

While I will correct these bugs in a few days,
if you have appropriate patches, I want to review and incorporate them.

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http://redmine.ruby-lang.org/issues/show/3803

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http://redmine.ruby-lang.org