* vm_trace.c (rb_threadptr_exec_event_hooks_orig):
maintain trace_running counter on internal events.
This patch is made by Takashi Kokubun <takashikkbn@gmail.com>.
[Bug #11603] https://github.com/ruby/ruby/pull/1059
* vm_trace.c (rb_threadptr_exec_event_hooks_orig):
merge revision(s) 52476,52477: [Backport #11603]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@52641 b2dd03c8-39d4-4d8f-98ff-823fe69b080e