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// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --expose-debug-as debug
var Debug = debug.Debug;
function listener(event, exec_state, event_data, data) {
if (event != Debug.DebugEvent.Break) return;
try {
var frame_count = exec_state.frameCount();
for (var i = 0; i < frame_count; i++) {
var frame = exec_state.frame(i);
var scope_count = frame.scopeCount();
for (var j = 0; j < scope_count; j++) {
var scope = frame.scope(j);
assertTrue(scope.scopeObject().property('').isUndefined());
}
}
} catch (e) {
print(e, e.stack);
exception = e;
}
}
Debug.setListener(listener);
(function(a = 1) { debugger; })();
Debug.setListener(null);
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