[ruby-cvs:61216] nobu:r54055 (trunk): hash.c: make duplicated hash WB protected

[nobu at ruby-lang.org]

nobu	2016-03-09 16:17:01 +0900 (Wed, 09 Mar 2016)

  New Revision: 54055

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=54055

  Log:
    hash.c: make duplicated hash WB protected
    
    * hash.c (hash_alloc_flags): allocate new hash with the flags and
      the default value.
    
    * hash.c (hash_dup): duplicate with the flags and the default
      value.
    
    * hash.c (rb_hash_dup): make the duplicated hash write-barrier
      protected.

  Modified files:
    trunk/hash.c