36464 2010-03-22 15:43:18 -0700 HistoryConroller::m_currentItem can sometimes be null for a fully loaded frame 2023-10-03 10:50:49 -0700 1 1 1 Unclassified WebKit History 528+ (Nightly build) All All RESOLVED DUPLICATE 252944 https://bugs.webkit.org/show_bug.cgi?id=252944 P2 Normal --- 38840 1 fishd fishd ahmad.saleem792 beidson jedrzej.nowacki oldest_to_newest 202806 0 fishd 2010-03-22 15:43:18 -0700 HistoryConroller::m_currentItem can sometimes be null for a fully loaded frame This should not be possible, and it causes the following problems: 1) Unable to save form and scrollbar state 2) Unable to support history.replaceState method I'll attach a test case that shows at least one way for m_currentItem to be null. 202809 1 51365 fishd 2010-03-22 15:46:26 -0700 Created attachment 51365 testcase 223849 2 jedrzej.nowacki 2010-05-11 03:23:02 -0700 Another testcase looks like that (Qt, C++ code): QWebPage page; page.mainFrame->setHtml("..."); Documentation of the QWebFrane::setHtml contains a note: "This method will not affect session or global history for the frame". As the setHtml doesn't affect a history it is really easy to assert/crash on a history opertions (for example pushState). It seems that we can't assume that m_currentItem or m_previousItem are always set after frame got loaded. I'm linking the bug to 38840. 1982148 3 ahmad.saleem792 2023-10-03 10:50:49 -0700 *** This bug has been marked as a duplicate of bug 252944 *** 51365 2010-03-22 15:46:26 -0700 2010-03-22 15:46:26 -0700 testcase test_bwo36464_reduced.html text/html 395 fishd PHNjcmlwdD4KaWYgKHBhcmVudCA9PSB3aW5kb3cpIHsKICBmdW5jdGlvbiByZXBsYWNlSGFzaChm cmFnKSB7CiAgICBmcmFtZXNbMF0ubG9jYXRpb24ucmVwbGFjZSgnIycgKyBmcmFnKTsKICB9CiAg b25sb2FkID0gZnVuY3Rpb24oKSB7CiAgICB2YXIgZiA9IGRvY3VtZW50LmNyZWF0ZUVsZW1lbnQo J2lmcmFtZScpOwogICAgZi5zcmMgPSBsb2NhdGlvbjsKICAgIGYub25sb2FkID0gZnVuY3Rpb24o KSB7CiAgICAgIGRlbGV0ZSBmLm9ubG9hZDsKICAgICAgZnJhbWVzWzBdLmhpc3RvcnkucmVwbGFj ZVN0YXRlKCdiYXInLCAnYmFyJywgJyNiYXInKTsKICAgIH0KICAgIGRvY3VtZW50LmJvZHkuYXBw ZW5kQ2hpbGQoZik7CiAgICByZXBsYWNlSGFzaCgnZm9vJyk7CiAgfQp9Cjwvc2NyaXB0Pgo=