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Bug #10465

Bug of multiplication between Bignums

Added by Nishihama (Kohji Nishihama) over 4 years ago. Updated over 4 years ago.

Status:
Closed
Priority:
Normal
Target version:
-
ruby -v:
ruby 2.1.4p265 (2014-10-27 revision 48166) [i386-mingw32]
[ruby-core:66044]

Description

I calculate multiplication of a certain pear of Bignums,
and a wrong result is outputted.

OS:Windows Vista Home Premium。
bug.rb works on
ruby 1.8.7 (2008-08-11 patchlevel 72) [i386-mswin32],
ruby 1.9.3p484 (2013-11-22) [i386-mingw32],
ruby 2.0.0p353 (2013-11-22) [i386-mingw32].
It doesn't work on
ruby 2.1.3p242 (2014-09-19 revision 47630) [i386-mingw32]
and ruby 2.1.4p265 (2014-10-27 revision 48166) [i386-mingw32].

$ ruby bug.rb
5470148495 # wrong number
1943359375 # correct number
#The output is too long, and I wrote the only last 10 digit.


Files

bug.rb (16.9 KB) bug.rb Nishihama (Kohji Nishihama), 11/01/2014 04:18 AM

Related issues

Copied from Ruby trunk - Bug #10464: Bignum同士の乗算の不具合Closed11/01/2014Actions

Associated revisions

Revision 905b5221
Added by akr (Akira Tanaka) over 4 years ago

  • 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.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48222 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

Revision 48222
Added by akr (Akira Tanaka) over 4 years ago

  • 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.

Revision 48222
Added by akr (Akira Tanaka) over 4 years ago

  • 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.

Revision 48222
Added by akr (Akira Tanaka) over 4 years ago

  • 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.

Revision 48222
Added by akr (Akira Tanaka) over 4 years ago

  • 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.

Revision 48222
Added by akr (Akira Tanaka) over 4 years ago

  • 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.

Revision 48222
Added by akr (Akira Tanaka) over 4 years ago

  • 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.

Revision a7987d8b
Added by nagachika (Tomoyuki Chikanaga) over 4 years ago

merge revision(s) r48222: [Backport #10464] [Backport #10465]

    * 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.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@48272 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

Revision 48272
Added by nagachika (Tomoyuki Chikanaga) over 4 years ago

merge revision(s) r48222: [Backport #10464] [Backport #10465]

* 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.

History

Updated by Nishihama (Kohji Nishihama) over 4 years ago

  • Copied from Bug #10464: Bignum同士の乗算の不具合 added

Updated by akr (Akira Tanaka) over 4 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) over 4 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) over 4 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.

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