diff --git a/ChangeLog b/ChangeLog
index 21c3493b12..5642a38d31 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Tue Apr 12 11:51:18 2016  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* compile.c (new_label_body): initialize bit fields, since
+	  compile_data_alloc does not clear the memory.  [Bug #12082]
+
 Mon Apr 11 20:18:43 2016  Koichi Sasada  <ko1@atdot.net>
 
 	* vm_backtrace.c (frame2klass): filter only for imemo_ment.
diff --git a/compile.c b/compile.c
index cd9426c230..33cdea35f6 100644
--- a/compile.c
+++ b/compile.c
@@ -998,6 +998,8 @@ new_label_body(rb_iseq_t *iseq, long line)
     labelobj->sc_state = 0;
     labelobj->sp = -1;
     labelobj->refcnt = 0;
+    labelobj->set = 0;
+    labelobj->rescued = LABEL_RESCUE_NONE;
     return labelobj;
 }