From: "nagachika (Tomoyuki Chikanaga)" <nagachika00@...>
Date: 2013-12-02T23:30:19+09:00
Subject: [ruby-dev:47838] [ruby-trunk - Bug #8010]	Enumerator#with_index(large_number)


Issue #8010 has been updated by nagachika (Tomoyuki Chikanaga).


r39594 and r39596 were backported to ruby_2_0_0 branch at 43960.
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Bug #8010: Enumerator#with_index(large_number)
https://bugs.ruby-lang.org/issues/8010#change-43365

Author: znz (Kazuhiro NISHIYAMA)
Status: Closed
Priority: Normal
Assignee: 
Category: core
Target version: 
ruby -v: ruby 2.1.0dev (2013-03-04 trunk 39580) [x86_64-linux]
Backport: 


Enumerator#with_index の引数で大きな数を指定するとマイナスになったり例外になったりするのはバグでしょうか?

% ruby -ve 'p 3.times.with_index(1<<61).to_a'
ruby 2.1.0dev (2013-03-04 trunk 39580) [x86_64-linux]
[[0, 2305843009213693952], [1, 2305843009213693953], [2, 2305843009213693954]]
% ruby -ve 'p 3.times.with_index(1<<62).to_a'
ruby 2.1.0dev (2013-03-04 trunk 39580) [x86_64-linux]
[[0, -4611686018427387904], [1, -4611686018427387903], [2, -4611686018427387902]]
% ruby -ve 'p 3.times.with_index(1<<63).to_a'
ruby 2.1.0dev (2013-03-04 trunk 39580) [x86_64-linux]
-e:1:in `with_index': bignum too big to convert into `long' (RangeError)
        from -e:1:in `each'
        from -e:1:in `to_a'
        from -e:1:in `<main>'



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