hash.c: iteration level with reentering
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43683 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
hash.c: iteration level with reentering
deal with iteration level when reentering by callcc. temporary
measure until rollback of ensure is introduced. [ruby-dev:47807]
[Bug #9105]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43683 b2dd03c8-39d4-4d8f-98ff-823fe69b080e