<html> <head> <title>Crash [@ nsFocusManager::SendFocusOrBlurEvent] after switching focus to a different window in this case</title> <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"> <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script> <script> SimpleTest.waitForExplicitFinish(); function done() { is("passed", "passed", "test passed without crashing"); SimpleTest.finish(); } function switchFocus() { setTimeout(() => window.open('497633.html', '_new', 'width=300,height=300'), 0); } </script> </head> <body> <iframe src="data:text/html;charset=utf-8,%3Chtml%3E%0A%3Chead%3E%3C/head%3E%0A%3Cbody%3E%0A%3Cbutton%20id%3D%22a%22%20onfocus%3D%22parent.switchFocus%28%29%22%20onblur%3D%22window.frameElement.parentNode.removeChild%28window.frameElement%29%22%3ESwitching%20focus%20to%20a%20different%20program%20should%20not%20crash%20Mozilla%3C/button%3E%0A%3Cscript%3E%0Adocument.getElementById%28%27a%27%29.focus%28%29%3B%0A%3C/script%3E%0A%3C/body%3E%0A%3C/html%3E"></iframe> <p id="display"></p> <div id="content" style="display: none"></div> </body> </html>