* vm.c (m_core_hash_merge_ptr): copy the arguments to the machine
stack before rewinding the control frame pointer and leaving the
arguments outside valid region of the value stack.
[ruby-core:69969] [Bug #11352]
* vm.c (REWIND_CFP): keep the arguments region inside the valid
value stack. [ruby-core:69969] [Bug #11352]
merge revision(s) 51263,51264: [Backport #11352]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@51601 b2dd03c8-39d4-4d8f-98ff-823fe69b080e