From: Marc-Andre Lafortune <ruby-core@...>
Date: 2011-09-06T06:47:21+09:00
Subject: [ruby-core:39286] [Ruby 1.9 - Bug #5276] 4294967295.8.round is 4294967295 on 32bit


Issue #5276 has been updated by Marc-Andre Lafortune.


Interestingly, the first bug is in dbl2ival, not in my patch. My patch just uncovered it. In particular:

    0.59.divmod(7.761021455128987e-11).first #  => 7602092113 on 64 bits platform
                                             # but 7602092112 on 32 bits

This bug was incompletely addressed in r13902.

Fixed in r33198 and r33199.

Moving to backport.
----------------------------------------
Bug #5276: 4294967295.8.round is 4294967295 on 32bit
http://redmine.ruby-lang.org/issues/5276

Author: Yui NARUSE
Status: Closed
Priority: Normal
Assignee: Marc-Andre Lafortune
Category: core
Target version: 1.9.3
ruby -v: ruby 1.9.4dev (2011-09-05 trunk 33189) [i686-linux]


ruby -e'p 4294967295.8.round' must be 4294967296 but 4294967295 on 32bit environment.


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