* vm_trace.c (rb_postponed_job_flush): fix bit operation.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43252 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* ext/objspace/gc_hook.c: prohibit reentrant.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43253 b2dd03c8-39d4-4d8f-98ff-823fe69b080e