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<base href="https://bugs.webkit.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - media/restore-from-page-cache.html causes NoEventDispatchAssertion::isEventAllowedInMainThread() assertion failure"
href="https://bugs.webkit.org/show_bug.cgi?id=170087">170087</a>
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<tr>
<th>Summary</th>
<td>media/restore-from-page-cache.html causes NoEventDispatchAssertion::isEventAllowedInMainThread() assertion failure
</td>
</tr>
<tr>
<th>Product</th>
<td>WebKit
</td>
</tr>
<tr>
<th>Version</th>
<td>WebKit Nightly Build
</td>
</tr>
<tr>
<th>Hardware</th>
<td>All
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>Normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P2
</td>
</tr>
<tr>
<th>Component</th>
<td>Tools / Tests
</td>
</tr>
<tr>
<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>dbates@webkit.org
</td>
</tr>
<tr>
<th>CC</th>
<td>lforschler@apple.com
</td>
</tr></table>
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<pre>The test media/restore-from-page-cache.html dispatches a non-bubbling, non-cancelable DOM resize event when the page is being restored from the page cache. Following <<a href="https://trac.webkit.org/changeset/214014">https://trac.webkit.org/changeset/214014</a>> (<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED"
href="show_bug.cgi?id=169703">bug #169703</a>) we assert that DOM events should not be dispatched when a page is being restored from the page cache.
[[
ASSERTION FAILED: NoEventDispatchAssertion::isEventAllowedInMainThread()
/Volumes/Data/slave/sierra-debug/build/Source/WebCore/dom/EventDispatcher.cpp(131) : bool WebCore::EventDispatcher::dispatchEvent(WebCore::Node &, WebCore::Event &)
1 0x11076682d WTFCrash
2 0x110766849 WTFCrashWithSecurityImplication
3 0x1188d7ef4 WebCore::EventDispatcher::dispatchEvent(WebCore::Node&, WebCore::Event&)
4 0x119fdda1d WebCore::Node::dispatchEvent(WebCore::Event&)
5 0x118d59d75 WebCore::HTMLMediaElement::layoutSizeChanged()::$_2::operator()() const
6 0x118d59b39 WTF::Function<void ()>::CallableWrapper<WebCore::HTMLMediaElement::layoutSizeChanged()::$_2>::call()
7 0x11805679e WTF::Function<void ()>::operator()() const
8 0x118b152b6 WebCore::FrameView::flushPostLayoutTasksQueue()
9 0x118b028a5 WebCore::FrameView::performPostLayoutTasks()
10 0x118b0939d WebCore::FrameView::layout(bool)
11 0x118b12a2a WebCore::FrameView::updateContentsSize()
12 0x1182413a0 WebCore::CachedPage::restore(WebCore::Page&)
13 0x118ad6683 WebCore::FrameLoader::commitProvisionalLoad()
14 0x118adc0f5 WebCore::FrameLoader::loadProvisionalItemFromCachedPage()
15 0x118ad44a6 WebCore::FrameLoader::continueLoadAfterNavigationPolicy(WebCore::ResourceRequest const&, WebCore::FormState*, bool, WebCore::AllowNavigationToInvalidURL)
16 0x118aeb338 WebCore::FrameLoader::loadWithDocumentLoader(WebCore::DocumentLoader*, WebCore::FrameLoadType, WebCore::FormState*, WebCore::AllowNavigationToInvalidURL)::$_4::operator()(WebCore::ResourceRequest const&, WebCore::FormState*, bool) const
17 0x118aeb2da void std::__1::__invoke_void_return_wrapper<void>::__call<WebCore::FrameLoader::loadWithDocumentLoader(WebCore::DocumentLoader*, WebCore::FrameLoadType, WebCore::FormState*, WebCore::AllowNavigationToInvalidURL)::$_4&, WebCore::ResourceRequest const&, WebCore::FormState*, bool>(WebCore::FrameLoader::loadWithDocumentLoader(WebCore::DocumentLoader*, WebCore::FrameLoadType, WebCore::FormState*, WebCore::AllowNavigationToInvalidURL)::$_4&&&, WebCore::ResourceRequest const&&&, WebCore::FormState*&&, bool&&)
18 0x118aeb219 std::__1::__function::__func<WebCore::FrameLoader::loadWithDocumentLoader(WebCore::DocumentLoader*, WebCore::FrameLoadType, WebCore::FormState*, WebCore::AllowNavigationToInvalidURL)::$_4, std::__1::allocator<WebCore::FrameLoader::loadWithDocumentLoader(WebCore::DocumentLoader*, WebCore::FrameLoadType, WebCore::FormState*, WebCore::AllowNavigationToInvalidURL)::$_4>, void (WebCore::ResourceRequest const&, WebCore::FormState*, bool)>::operator()(WebCore::ResourceRequest const&, WebCore::FormState*&&, bool&&)
19 0x11a0f21fa std::__1::function<void (WebCore::ResourceRequest const&, WebCore::FormState*, bool)>::operator()(WebCore::ResourceRequest const&, WebCore::FormState*, bool) const
20 0x11a0f20bb WebCore::PolicyCallback::call(bool)
21 0x11a0f3388 WebCore::PolicyChecker::continueAfterNavigationPolicy(WebCore::PolicyAction)
22 0x11a0f705e WebCore::PolicyChecker::checkNavigationPolicy(WebCore::ResourceRequest const&, bool, WebCore::DocumentLoader*, WebCore::FormState*, std::__1::function<void (WebCore::ResourceRequest const&, WebCore::FormState*, bool)>)::$_1::operator()(WebCore::PolicyAction) const
23 0x11a0f702f void std::__1::__invoke_void_return_wrapper<void>::__call<WebCore::PolicyChecker::checkNavigationPolicy(WebCore::ResourceRequest const&, bool, WebCore::DocumentLoader*, WebCore::FormState*, std::__1::function<void (WebCore::ResourceRequest const&, WebCore::FormState*, bool)>)::$_1&, WebCore::PolicyAction>(WebCore::PolicyChecker::checkNavigationPolicy(WebCore::ResourceRequest const&, bool, WebCore::DocumentLoader*, WebCore::FormState*, std::__1::function<void (WebCore::ResourceRequest const&, WebCore::FormState*, bool)>)::$_1&&&, WebCore::PolicyAction&&)
24 0x11a0f6fb9 std::__1::__function::__func<WebCore::PolicyChecker::checkNavigationPolicy(WebCore::ResourceRequest const&, bool, WebCore::DocumentLoader*, WebCore::FormState*, std::__1::function<void (WebCore::ResourceRequest const&, WebCore::FormState*, bool)>)::$_1, std::__1::allocator<WebCore::PolicyChecker::checkNavigationPolicy(WebCore::ResourceRequest const&, bool, WebCore::DocumentLoader*, WebCore::FormState*, std::__1::function<void (WebCore::ResourceRequest const&, WebCore::FormState*, bool)>)::$_1>, void (WebCore::PolicyAction)>::operator()(WebCore::PolicyAction&&)
25 0x122c9f12c std::__1::function<void (WebCore::PolicyAction)>::operator()(WebCore::PolicyAction) const
26 0x122ca75a0 -[WebFramePolicyListener receivedPolicyDecision:]
27 0x122ca777d -[WebFramePolicyListener use]
28 0x10ea675da -[DefaultPolicyDelegate webView:decidePolicyForNavigationAction:request:frame:decisionListener:]
29 0x7fffcfc5a6dc __invoking___
30 0x7fffcfc5a561 -[NSInvocation invoke]
31 0x7fffcfc73736 -[NSInvocation invokeWithTarget:]
]]
<<a href="https://build.webkit.org/results/Apple%20Sierra%20Debug%20WK1%20(Tests)/r214369%20(166)/media/restore-from-page-cache-crash-log.txt">https://build.webkit.org/results/Apple%20Sierra%20Debug%20WK1%20(Tests)/r214369%20(166)/media/restore-from-page-cache-crash-log.txt</a>></pre>
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