Bug #1020: Matrix#rank loops in some circumstances

• Status: Closed
• Assignee: yugui (Yuki Sonoda)
• Target version: 3.0
• ruby -v: ruby 1.9.1p5000 (2009-01-16 trunk 21610) [i386-darwin9.6.0]

[pragdave (Dave Thomas)]

=begin
$ ruby -v -r matrix -e 'p Matrix[ [1,2,3], [4,5,6], [7,8,9] ].rank'
ruby 1.9.1p5000 (2009-01-16 trunk 21610) [i386-darwin9.6.0]
<< loops... >>

The answer should be 2.
=end

[ko1 (Koichi Sasada)]

• Assignee set to yugui (Yuki Sonoda)
• Target version set to 3.0
• ruby -v set to ruby 1.9.1p5000 (2009-01-16 trunk 21610) [i386-darwin9.6.0]

=begin

=end

[runpaint (Run Paint Run Run)]

=begin
Similarly:

 $ ruby1.8 -rmatrix -ve 'p Matrix[ [1, 2, 0, 3], [1, -2, 3, 0], [0, 0, 4, 8], [2, 4, 0, 6] ].rank'
 ruby 1.8.7 (2008-08-11 patchlevel 72) [i486-linux]
 3

 $ ruby -rmatrix -ve 'p Matrix[ [1, 2, 0, 3], [1, -2, 3, 0], [0, 0, 4, 8], [2, 4, 0, 6] ].rank'
 ruby 1.9.1p129 (2009-05-12 revision 23412) [i686-linux]
 ^C/usr/local/lib/ruby/1.9.1/matrix.rb:775:in `block in rank': Interrupt
from /usr/local/lib/ruby/1.9.1/matrix.rb:774:in `loop'
from /usr/local/lib/ruby/1.9.1/matrix.rb:774:in `rank'
from -e:1:in `<main>'

The second example just hangs until I kill it.
=end

[wanabe (_ wanabe)]

• Status changed from Open to Closed
• % Done changed from 0 to 100

=begin
Applied in changeset r24211.
=end