tmm1	2013-12-04 13:05:15 +0900 (Wed, 04 Dec 2013)

  New Revision: 43987

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=43987

  Log:
    * vm_trace.c (rb_suppress_tracing): Fix initialization of stack
      allocated rb_trace_arg_t structure. Without this patch, sometimes
      INTERNAL_EVENT_GC would be skipped accidentally inside
      rb_threadptr_exec_event_hooks_orig().

  Modified files:
    trunk/ChangeLog
    trunk/vm_trace.c
Index: ChangeLog
===================================================================
--- ChangeLog	(revision 43986)
+++ ChangeLog	(revision 43987)
@@ -1,3 +1,10 @@ https://github.com/ruby/ruby/blob/trunk/ChangeLog#L1
+Wed Dec  4 13:02:13 2013  Aman Gupta <ruby@t...>
+
+	* vm_trace.c (rb_suppress_tracing): Fix initialization of stack
+	  allocated rb_trace_arg_t structure. Without this patch, sometimes
+	  INTERNAL_EVENT_GC would be skipped accidentally inside
+	  rb_threadptr_exec_event_hooks_orig().
+
 Wed Dec  4 12:57:24 2013  Aman Gupta <ruby@t...>
 
 	* string.c (fstr_update_callback): Improve implementation in r43968
Index: vm_trace.c
===================================================================
--- vm_trace.c	(revision 43986)
+++ vm_trace.c	(revision 43987)
@@ -392,6 +392,7 @@ rb_suppress_tracing(VALUE (*func)(VALUE) https://github.com/ruby/ruby/blob/trunk/vm_trace.c#L392
     int state;
     const int tracing = th->trace_arg ? 1 : 0;
     rb_trace_arg_t dummy_trace_arg;
+    dummy_trace_arg.event = 0;
 
     if (!tracing) th->vm->trace_running++;
     if (!th->trace_arg) th->trace_arg = &dummy_trace_arg;

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