akr	2016-05-02 00:42:52 +0900 (Mon, 02 May 2016)

  New Revision: 54873

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=54873

  Log:
    Add a cast to avoid signed integer overflow.
    
    * vm_trace.c (recalc_remove_ruby_vm_event_flags): Add a cast to
      avoid signed integer overflow.

  Modified files:
    trunk/ChangeLog
    trunk/vm_trace.c
Index: vm_trace.c
===================================================================
--- vm_trace.c	(revision 54872)
+++ vm_trace.c	(revision 54873)
@@ -81,7 +81,7 @@ recalc_remove_ruby_vm_event_flags(rb_eve https://github.com/ruby/ruby/blob/trunk/vm_trace.c#L81
     ruby_vm_event_flags = 0;
 
     for (i=0; i<MAX_EVENT_NUM; i++) {
-	if (events & (1 << i)) {
+	if (events & ((rb_event_flag_t)1 << i)) {
 	    ruby_event_flag_count[i]--;
 	}
 	ruby_vm_event_flags |= ruby_event_flag_count[i] ? (1<<i) : 0;
Index: ChangeLog
===================================================================
--- ChangeLog	(revision 54872)
+++ ChangeLog	(revision 54873)
@@ -1,3 +1,8 @@ https://github.com/ruby/ruby/blob/trunk/ChangeLog#L1
+Mon May  2 00:41:53 2016  Tanaka Akira  <akr@f...>
+
+	* vm_trace.c (recalc_remove_ruby_vm_event_flags): Add a cast to
+	  avoid signed integer overflow.
+
 Mon May  2 00:06:04 2016  Tanaka Akira  <akr@f...>
 
 	* test/lib/envutil.rb: Define Integer::{FIXNUM_MIN,FIXNUM_MAX}.

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