vm_trace.c: isolate exceptions
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44260 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
vm_trace.c: isolate exceptions
postponed jobs and restore outer ones. based on a patch by
tarui. [ruby-core:58652] [Bug #9168]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44260 b2dd03c8-39d4-4d8f-98ff-823fe69b080e