[debug-wrapper] Conditional breaks, locals, evaluate, scopes

test/mjsunit/regress/regress-crbug-323936.js

-// Copyright 2014 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
-
-Debug = debug.Debug;
-
-var step = 0;
-var exception = null;
-
-function listener(event, exec_state, event_data, data) {
-  if (event != Debug.DebugEvent.Break) return;
-  try {
-    if (step == 0) {
-      assertEquals("error", exec_state.frame(0).evaluate("e").value());
-      exec_state.frame(0).evaluate("write_0('foo')");
-      exec_state.frame(0).evaluate("write_1('modified')");
-    } else {
-      assertEquals("argument", exec_state.frame(0).evaluate("e").value());
-      exec_state.frame(0).evaluate("write_2('bar')");
-    }
-    step++;
-  } catch (e) {
-    print(e + e.stack);
-    exception = e;
-  }
-}
-
-Debug.setListener(listener);
-
-function f(e, x) {
-  try {
-    throw "error";
-  } catch(e) {
-    // In ES2015 hoisting semantics, 'x' binds to the argument
-    // and 'e' binds to the exception.
-    function write_0(v) { e = v }
-    function write_1(v) { x = v }
-    debugger;
-    assertEquals("foo", e);  // overwritten by the debugger
-  }
-  assertEquals("argument", e);  // debugger did not overwrite
-  function write_2(v) { e = v }
-  debugger;
-  assertEquals("bar", e);
-  assertEquals("modified", x);
-}
-
-f("argument")
-assertNull(exception);
-assertEquals(2, step);