[ruby-cvs:53152] nagachika:r46006 (ruby_2_1): merge revision(s) r45553, r45554, r45557, r45558, r45561, r45566, r45567: [Backport #9718]

[nagachika at ruby-lang.org]

nagachika	2014-05-19 00:54:39 +0900 (Mon, 19 May 2014)

  New Revision: 46006

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=46006

  Log:
    merge revision(s) r45553,r45554,r45557,r45558,r45561,r45566,r45567: [Backport #9718]
    
    * array.c (rb_ary_modify): remember shared array owner if a shared
      array owner is promoted and a shared array is not promoted.
      Now, shared array is WB-unprotected so that shared arrays are not
      promoted.  All objects referred from shared array should be marked
      correctly.
      [ruby-core:61919] [ruby-trunk - Bug #9718]
    
    * test/ruby/test_array.rb: add a test for above.
    
    * test/ruby/test_array.rb: remove useless `assert'.

  Modified directories:
    branches/ruby_2_1/
  Modified files:
    branches/ruby_2_1/ChangeLog
    branches/ruby_2_1/array.c
    branches/ruby_2_1/test/ruby/envutil.rb
    branches/ruby_2_1/test/ruby/test_array.rb
    branches/ruby_2_1/version.h