Bisect clang

tools/clang/blink_gc_plugin/tests/weak_fields_require_tracing.cpp

+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "weak_fields_require_tracing.h"
+
+namespace blink {
+
+void HeapObject::trace(Visitor* visitor)
+{
+    // Missing visitor->trace(m_obj1);
+    // Missing visitor->trace(m_obj2);
+    // visitor->trace(m_obj3) in callback.
+    // Missing visitor->trace(m_set1);
+    visitor->trace(m_set2);
+    visitor->registerWeakMembers<HeapObject,
+                                 &HeapObject::clearWeakMembers>(this);
+}
+
+void HeapObject::clearWeakMembers(Visitor* visitor)
+{
+    visitor->trace(m_obj1);  // Does not count.
+    // Missing visitor->trace(m_obj2);
+    visitor->trace(m_obj3);  // OK.
+    visitor->trace(m_set1);  // Does not count.
+}
+
+}