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.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54873 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/vm_trace.c b/vm_trace.c
index 673739eb20..a84821e2b0 100644
--- a/vm_trace.c
+++ b/vm_trace.c
@@ -81,7 +81,7 @@ recalc_remove_ruby_vm_event_flags(rb_event_flag_t events)
     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;