Actions
Bug #10464
closedBignum同士の乗算の不具合
Description
あるBignum同士を乗算すると、誤った値が出力されます。
OSはWindows Vista Home Premium。
なお、ruby 1.8.7 (2008-08-11 patchlevel 72) [i386-mswin32]、ruby 1.9.3p484 (2013-11-22) [i386-mingw32]、200: ruby 2.0.0p353 (2013-11-22) [i386-mingw32]では正常に動作し、
ruby 2.1.3p242 (2014-09-19 revision 47630) [i386-mingw32]では同様に不具合が生じました。
$ ruby bug.rb
5470148495 # 誤った乗算の値
1943359375 # 真の乗算の値
#なお、冗長になるので下10桁のみを表示しています
Files
Updated by Nishihama (Kohji Nishihama) almost 10 years ago
対象バージョン:を誤ってしまいました。
正しくは2.1.0です。
Updated by Nishihama (Kohji Nishihama) almost 10 years ago
- Copied to Bug #10465: Bug of multiplication between Bignums added
Updated by akr (Akira Tanaka) almost 10 years ago
- Status changed from Open to Closed
- % Done changed from 0 to 100
Applied in changeset r48222.
- bignum.c (bary_mul_balance_with_mulfunc): Fix free work area
location.
[ruby-dev:48723] [Bug #10464]
[ruby-core:66044] [Bug #10465]
Reported by Kohji Nishihama.
Updated by nagachika (Tomoyuki Chikanaga) almost 10 years ago
- Backport changed from 2.0.0: UNKNOWN, 2.1: UNKNOWN to 2.0.0: DONTNEED, 2.1: REQUIRED
Updated by nagachika (Tomoyuki Chikanaga) almost 10 years ago
- Backport changed from 2.0.0: DONTNEED, 2.1: REQUIRED to 2.0.0: DONTNEED, 2.1: DONE
Backported into ruby_2_1
at r48272.
Actions
Like0
Like0Like0Like0Like0Like0