Bug 71421 – REGRESSION(r99025-r99037): platform/mac/accessibility/select-element-selection-with-optgroups.html is asserting

• Component: Forms
• Status: RESOLVED FIXED

[Simon Fraser (smfr)]

ASSERTION FAILED: !(flags & DispatchChangeEvent)
/Volumes/Big/slave/snowleopard-intel-debug/build/Source/WebCore/html/HTMLSelectElement.cpp(792) : void WebCore::HTMLSelectElement::selectOption(int, unsigned int)
1   0x101887a53 WebCore::HTMLSelectElement::selectOption(int, unsigned int)
2   0x101887c0e WebCore::HTMLSelectElement::accessKeySetSelectedIndex(int)
3   0x1012315ed WebCore::AccessibilityListBoxOption::setSelected(bool)
4   0x101221578 WebCore::AccessibilityListBox::setSelectedChildren(WTF::Vector<WTF::RefPtr<WebCore::AccessibilityObject>, 0ul>&)
5   0x10125f242 -[WebAccessibilityObjectWrapper accessibilitySetValue:forAttribute:]
6   0x10000614f AccessibilityUIElement::setSelectedChild(AccessibilityUIElement*) const
7   0x100004629 setSelectedChildCallback(OpaqueJSContext const*, OpaqueJSValue*, OpaqueJSValue*, unsigned long, OpaqueJSValue const* const*, OpaqueJSValue const**)
8   0x1002d1537 JSC::JSCallbackFunction::call(JSC::ExecState*)
9   0x1002b9ec8 cti_op_call_NotJSFunction
10  0x1002b25e5 jscGeneratedNativeCode
11  0x100290b48 JSC::JITCode::execute(JSC::RegisterFile*, JSC::ExecState*, JSC::JSGlobalData*)
12  0x10028c4c3 JSC::Interpreter::execute(JSC::ProgramExecutable*, JSC::ExecState*, JSC::ScopeChainNode*, JSC::JSObject*)
13  0x1002253e9 JSC::evaluate(JSC::ExecState*, JSC::ScopeChainNode*, JSC::SourceCode const&, JSC::JSValue, JSC::JSValue*)
14  0x1022a4504 WebCore::JSMainThreadExecState::evaluate(JSC::ExecState*, JSC::ScopeChainNode*, JSC::SourceCode const&, JSC::JSValue, JSC::JSValue*)
15  0x1020908dc WebCore::ScriptController::evaluateInWorld(WebCore::ScriptSourceCode const&, WebCore::DOMWrapperWorld*)
16  0x102090b37 WebCore::ScriptController::evaluate(WebCore::ScriptSourceCode const&)
17  0x10209f954 WebCore::ScriptElement::executeScript(WebCore::ScriptSourceCode const&)
18  0x1020a04b8 WebCore::ScriptElement::prepareScript(WTF::TextPosition const&, WebCore::ScriptElement::LegacyTypeSupport)
19  0x101884470 WebCore::HTMLScriptRunner::runScript(WebCore::Element*, WTF::TextPosition const&)
20  0x101884f97 WebCore::HTMLScriptRunner::execute(WTF::PassRefPtr<WebCore::Element>, WTF::TextPosition const&)
21  0x101829ce8 WebCore::HTMLDocumentParser::runScriptsForPausedTreeBuilder()
22  0x101829d96 WebCore::HTMLDocumentParser::canTakeNextToken(WebCore::HTMLDocumentParser::SynchronousMode, WebCore::PumpSession&)
23  0x10182ac61 WebCore::HTMLDocumentParser::pumpTokenizer(WebCore::HTMLDocumentParser::SynchronousMode)
24  0x10182af4d WebCore::HTMLDocumentParser::pumpTokenizerIfPossible(WebCore::HTMLDocumentParser::SynchronousMode)
25  0x10182b4ab WebCore::HTMLDocumentParser::append(WebCore::SegmentedString const&)
26  0x1015656d4 WebCore::DecodedDataDocumentParser::appendBytes(WebCore::DocumentWriter*, char const*, unsigned long)
27  0x1015d12a2 WebCore::DocumentWriter::addData(char const*, unsigned long)
28  0x1015ba8a7 WebCore::DocumentLoader::commitData(char const*, unsigned long)
29  0x100cacddd -[WebFrame(WebInternal) _commitData:]
30  0x100cd7548 -[WebHTMLRepresentation receivedData:withDataSource:]
31  0x100c9382c -[WebDataSource(WebInternal) _receivedData:]

[Ryosuke Niwa]

Maybe caused by http://trac.webkit.org/changeset/99035/ ?

[Ryosuke Niwa]

Added a crash expectation in http://trac.webkit.org/changeset/99380 (debug only) for now.

[chris fleizach]

(In reply to comment #1)
> Maybe caused by http://trac.webkit.org/changeset/99035/ ?

This assert was added in this patch as far as I can tell

if (!usesMenuList()) 
 	792	        ASSERT(!(flags & DispatchChangeEvent)); 

Darin, can you take a look at this?

It's likely this is the code path that VoiceOver will use whenever selecting elements within a <select>

[Darin Adler]

The code previously had a comment saying this would never happen. I changed that to an assertion. We can just remove the assertion to restore the old behavior.

[Darin Adler]

I have no time for this right now; worth investigating further later. But for now, just turning off the ASSERT is smart.

[chris fleizach]

will upload a patch

[chris fleizach]

Created attachment 113970 [details]
patch

[chris fleizach]

http://trac.webkit.org/changeset/99514