[MacRuby] #868: Should not get a value until calling Hash#rehash when Object of Hash's key was changed.

21 Aug 2010

      #868: Should not get a value until calling Hash#rehash when Object of Hash's key
was changed.
----------------------------------+-----------------------------------------
 Reporter:  watson1978@…          |       Owner:  lsansonetti@…        
     Type:  defect                |      Status:  new                  
 Priority:  blocker               |   Milestone:                       
Component:  MacRuby               |    Keywords:                       
----------------------------------+-----------------------------------------
 Test Script:
 {{{
 #!ruby
 $ cat test_rehash.rb
 def assert_equal(a, b)
   p b
   p a == b
   puts "-----"
 end

 def assert_nil(a)
   p a
   p a == nil
   puts "-----"
 end

 a = [ "a", "b" ]
 c = [ "c", "d" ]
 h = { a => 100, c => 300 }

 assert_equal(100, h[a])

 a[0] = "z"
 assert_nil(h[a])

 h.rehash
 assert_equal(100, h[a])
 }}}

 Result of Ruby 1.9.1:
 {{{
 $ ruby test_rehash.rb
 100
 true
 -----
 nil
 true
 -----
 100
 true
 -----
 }}}

 Result of MacRuby Trunk:
 {{{
 $ macruby test_rehash.rb
 100
 true
 -----
 100
 false
 -----
 100
 true
 -----
 }}}

 This problem may be related to #791.

-- 
Ticket URL: <http://www.macruby.org/trac/ticket/868>
MacRuby <http://macruby.org/>