v8/test/mjsunit/debug-stepin-accessor-ic.js
yangguo c1b5d17439 Debugger: clear ICs on activating step-in to correctly flood accessor pairs.
If we compile handlers to call accessors, Debug::HandleStepIn won't get
called. Therefore we need to clear ICs each time. This has not been
necessary before because we used to patch ICs for breaking, and restored
them with cleared ICs. This is no longer the case. We do not use ICs
for breaking anymore, so they are not implicitly cleared any longer.

R=mvstanton@chromium.org
BUG=v8:4269
LOG=N

Review URL: https://codereview.chromium.org/1212253009

Cr-Commit-Position: refs/heads/master@{#29518}
2015-07-07 13:57:16 +00:00

50 lines
1.3 KiB
JavaScript

// 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
function get() {
return 3; // Break
} // Break
function set(x) {
this.x = x; // Break
} // Break
var o = {};
Object.defineProperty(o, "get", { get : get });
Object.defineProperty(o, "set", { set : set });
function f() {
for (var i = 0; i < 10; i++) { // Break
o.get; // Break
o.set = 1; // Break
}
} // Break
var break_count = 0;
var exception = null;
function listener(event, exec_state, event_data, data) {
if (event != Debug.DebugEvent.Break) return;
try {
var source_line = exec_state.frame(0).sourceLineText();
assertTrue(source_line.indexOf("// Break") > 0);
exec_state.prepareStep(Debug.StepAction.StepIn, 1);
break_count++;
} catch (e) {
exception = e;
}
}
var Debug = debug.Debug;
Debug.setListener(listener);
debugger; // Break
f(); // Break
Debug.setListener(null); // Break
assertEquals(86, break_count);
assertNull(exception);