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069e02ab47
Pick up the current branch head for V8 4.9 https://github.com/v8/v8/commit/1ecba0f PR-URL: https://github.com/nodejs/node/pull/4722 Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> Reviewed-By: Michaël Zasso <mic.besace@gmail.com>
64 lines
1.5 KiB
JavaScript
64 lines
1.5 KiB
JavaScript
// Copyright 2015 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --expose-debug-as debug --allow-natives-syntax
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// Test that live-editing a frame to introduce new.target fails.
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Debug = debug.Debug
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var calls = 0;
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var exceptions = 0;
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var results = [];
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var replace_again;
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eval(`
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function LogNewTarget() {
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calls++;
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ReplaceOnce();
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results.push(true);
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}
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`);
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function Replace(fun, original, patch) {
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%ExecuteInDebugContext(function() {
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var change_log = [];
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try {
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var script = Debug.findScript(fun);
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var patch_pos = script.source.indexOf(original);
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Debug.LiveEdit.TestApi.ApplySingleChunkPatch(
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script, patch_pos, original.length, patch, change_log);
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} catch (e) {
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assertEquals("BLOCKED_NO_NEW_TARGET_ON_RESTART",
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change_log[0].functions_on_stack[0].replace_problem);
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assertInstanceof(e, Debug.LiveEdit.Failure);
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exceptions++;
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}
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});
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}
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function ReplaceOnce(x) {
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if (replace_again) {
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replace_again = false;
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Replace(LogNewTarget, "true", "new.target");
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}
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}
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function Revert() {
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Replace(LogNewTarget, "new.target", "true");
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}
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replace_again = true;
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ReplaceOnce();
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new LogNewTarget();
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Revert();
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assertEquals(1, calls);
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assertEquals(0, exceptions);
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assertEquals([LogNewTarget], results);
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replace_again = true;
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new LogNewTarget();
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assertEquals(2, calls); // No restarts
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assertEquals(1, exceptions); // Replace failed.
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assertEquals([LogNewTarget, true], results);
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