50 lines
1.3 KiB
JavaScript
50 lines
1.3 KiB
JavaScript
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// Copyright 2018 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: --allow-natives-syntax --expose-gc --turbo-inline-array-builtins
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// Flags: --opt --no-always-opt
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// Make sure we gracefully handle the case of an empty array in
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// optimized code.
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(function() {
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var nothingThere = function(only_holes) {
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var a = [1,2,,3]; // holey smi array.
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if (only_holes) {
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a = [,,,]; // also a holey smi array.
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}
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return a.reduce((r,v,i,o)=>r+v);
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}
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nothingThere();
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nothingThere();
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%OptimizeFunctionOnNextCall(nothingThere);
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assertThrows(() => nothingThere(true));
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})();
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// An error generated inside the callback includes reduce in it's
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// stack trace.
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(function() {
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var re = /Array\.reduce/;
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var alwaysThrows = function() {
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var b = [,,,];
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var result = 0;
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var callback = function(r,v,i,o) {
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return r + v;
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};
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b.reduce(callback);
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}
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try {
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alwaysThrows();
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} catch (e) {
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assertTrue(re.exec(e.stack) !== null);
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}
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try { alwaysThrows(); } catch (e) {}
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try { alwaysThrows(); } catch (e) {}
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%OptimizeFunctionOnNextCall(alwaysThrows);
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try {
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alwaysThrows();
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} catch (e) {
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assertTrue(re.exec(e.stack) !== null);
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}
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})();
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