47 lines
1.1 KiB
JavaScript
47 lines
1.1 KiB
JavaScript
/**
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* Any copyright is dedicated to the Public Domain.
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* http://creativecommons.org/publicdomain/zero/1.0/
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*/
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// This function should never run on a too much recursion error.
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onerror = function (event) {
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postMessage(event.message);
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};
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// Pure JS recursion
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function recurse() {
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recurse();
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}
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// JS -> C++ -> JS -> C++ recursion
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function recurse2() {
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var xhr = new XMLHttpRequest();
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xhr.onreadystatechange = function () {
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xhr.open("GET", "nonexistent.file");
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};
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xhr.open("GET", "nonexistent.file");
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}
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var messageCount = 0;
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onmessage = function (event) {
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switch (++messageCount) {
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case 2:
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recurse2();
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// An exception thrown from an event handler like xhr.onreadystatechange
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// should not leave an exception pending in the code that generated the
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// event.
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postMessage("Done");
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return;
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case 1:
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recurse();
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throw "Exception should have prevented us from getting here!";
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default:
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throw "Weird number of messages: " + messageCount;
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}
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// eslint-disable-next-line no-unreachable
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throw "Impossible to get here!";
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};
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