[Webkit-unassigned] [Bug 69556] New: REGRESSION (r96595): First frame in assertion backtraces is no longer labeled "1"

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=69556

           Summary: REGRESSION (r96595): First frame in assertion
                    backtraces is no longer labeled "1"
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Macintosh Intel
        OS/Version: Mac OS X 10.7
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Web Template Framework
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: aroben at apple.com
                CC: darin at apple.com, gavinp at chromium.org


Here's an assertion backtrace I got today:


ASSERTION FAILED: !structure->m_previous
Source/JavaScriptCore/runtime/Structure.cpp(236) : void JSC::Structure::materializePropertyMap(JSC::JSGlobalData &)
2   0x10203207c JSC::Structure::materializePropertyMap(JSC::JSGlobalData&)
3   0x101e0903c JSC::Structure::materializePropertyMapIfNecessary(JSC::JSGlobalData&)
4   0x101e08e93 JSC::Structure::get(JSC::JSGlobalData&, JSC::Identifier const&)
5   0x101e8a984 JSC::DFG::ByteCodeParser::parseBlock(unsigned int)
6   0x101e8d70d JSC::DFG::ByteCodeParser::parse()
7   0x101e8d913 JSC::DFG::parse(JSC::DFG::Graph&, JSC::JSGlobalData*, JSC::CodeBlock*)
8   0x101df4d9f JSC::DFG::compile(JSC::DFG::CompileMode, JSC::ExecState*, JSC::ExecState*, JSC::CodeBlock*, JSC::JITCode&, JSC::MacroAssemblerCodePtr*)
9   0x101df4d3c JSC::DFG::tryCompileFunction(JSC::ExecState*, JSC::ExecState*, JSC::CodeBlock*, JSC::JITCode&, JSC::MacroAssemblerCodePtr&)
10  0x101ecf743 JSC::FunctionExecutable::compileForCallInternal(JSC::ExecState*, JSC::ScopeChainNode*, JSC::ExecState*, JSC::JITCode::JITType)
11  0x101ecee9b JSC::FunctionExecutable::compileOptimizedForCall(JSC::ExecState*, JSC::ScopeChainNode*, JSC::ExecState*)
12  0x101e650fb JSC::FunctionExecutable::compileOptimizedFor(JSC::ExecState*, JSC::ScopeChainNode*, JSC::CodeSpecializationKind)
13  0x101e624b4 JSC::FunctionCodeBlock::compileOptimized(JSC::ExecState*, JSC::ScopeChainNode*)
14  0x101f1c4fb cti_optimize_from_ret
15  0x101f25f20 jscGeneratedNativeCode
16  0x101eeb509 JSC::JITCode::execute(JSC::RegisterFile*, JSC::ExecState*, JSC::JSGlobalData*)
17  0x101ee78b0 JSC::Interpreter::execute(JSC::ProgramExecutable*, JSC::ExecState*, JSC::ScopeChainNode*, JSC::JSObject*)
18  0x101e70fba JSC::evaluate(JSC::ExecState*, JSC::ScopeChainNode*, JSC::SourceCode const&, JSC::JSValue, JSC::JSValue*)
19  0x10326106d WebCore::JSMainThreadExecState::evaluate(JSC::ExecState*, JSC::ScopeChainNode*, JSC::SourceCode const&, JSC::JSValue, JSC::JSValue*)
20  0x10387c51c WebCore::ScriptController::evaluateInWorld(WebCore::ScriptSourceCode const&, WebCore::DOMWrapperWorld*)
21  0x10387c644 WebCore::ScriptController::evaluate(WebCore::ScriptSourceCode const&)
22  0x103890372 WebCore::ScriptElement::executeScript(WebCore::ScriptSourceCode const&)
23  0x10388f49f WebCore::ScriptElement::prepareScript(WTF::TextPosition const&, WebCore::ScriptElement::LegacyTypeSupport)
24  0x102ed1c34 WebCore::HTMLScriptRunner::runScript(WebCore::Element*, WTF::TextPosition const&)
25  0x102ed1a07 WebCore::HTMLScriptRunner::execute(WTF::PassRefPtr<WebCore::Element>, WTF::TextPosition const&)
26  0x102e63320 WebCore::HTMLDocumentParser::runScriptsForPausedTreeBuilder()
27  0x102e6340b WebCore::HTMLDocumentParser::canTakeNextToken(WebCore::HTMLDocumentParser::SynchronousMode, WebCore::PumpSession&)
28  0x102e62d48 WebCore::HTMLDocumentParser::pumpTokenizer(WebCore::HTMLDocumentParser::SynchronousMode)
29  0x102e629b0 WebCore::HTMLDocumentParser::pumpTokenizerIfPossible(WebCore::HTMLDocumentParser::SynchronousMode)
30  0x102e63d44 WebCore::HTMLDocumentParser::resumeParsingAfterScriptExecution()
31  0x102e64387 WebCore::HTMLDocumentParser::executeScriptsWaitingForStylesheets()
32  0x102afbb62 WebCore::Document::removePendingSheet()

Note that the first frame is labeled "2". It used to be labeled "1".

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