text: // Copyright 2019 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.
  
  // Test that debug-evaluate properly shadows stack-allocated variables.
  
  Debug = debug.Debug
  
  let exception = null;
  function listener(event, exec_state, event_data, data) {
    if (event != Debug.DebugEvent.Break) return;
    try {
      assertEquals(2, exec_state.frame(0).evaluate("b").value());
      assertEquals(3, exec_state.frame(0).evaluate("c").value())
      assertThrows(() => exec_state.frame(0).evaluate("a").value());
    } catch (e) {
      exception = e;
      print(e + e.stack);
    }
  }
  
  Debug.setListener(listener);
  
  (function f() {
    let a = 1;
    let b = 2;
    let c = 3;
    () => a + c;  // a and c are context-allocated
    return function g() {
      let a = 2;  // a is stack-allocated
      return function h() {
        b;  // b is allocated onto f's context.
        debugger;
      }
    }
  })()()();
  
  Debug.setListener(null);
  assertNull(exception);
  