[Webkit-unassigned] [Bug 157085] New: Assertion failure for super() in default parameter with direct eval

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=157085

            Bug ID: 157085
           Summary: Assertion failure for super() in default parameter
                    with direct eval
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Local Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: andre.bargull at gmail.com

SVN: rev200124
Build with: perl Tools/Scripts/build-jsc --gtk --debug


The following test case triggers this assertion error:
---
ASSERTION FAILED: isDerivedConstructorContext() || m_arrowFunctionContextLexicalEnvironmentRegister != nullptr
---


Test case:
---
new class extends null { constructor(a=super()) { eval("") } }
---


Stack trace:
---
#0  0x00007ffff6e289ac in WTFCrash () at ../../Source/WTF/wtf/Assertions.cpp:322
#1  0x00007ffff64410fe in JSC::BytecodeGenerator::emitPutThisToArrowFunctionContextScope (this=0x7ffff0d98a00) at ../../Source/JavaScriptCore/bytecompiler/BytecodeGenerator.cpp:4269
#2  0x00007ffff647911b in JSC::FunctionCallValueNode::emitBytecode (this=0x7fffafdf40a0, generator=..., dst=0x7ffff0dd896c) at ../../Source/JavaScriptCore/bytecompiler/NodesCodegen.cpp:781
#3  0x00007ffff6449637 in JSC::BytecodeGenerator::emitNodeInTailPosition (this=0x7ffff0d98a00, dst=0x7ffff0dd896c, n=0x7fffafdf40a0) at ../../Source/JavaScriptCore/bytecompiler/BytecodeGenerator.h:415
#4  0x00007ffff6449521 in JSC::BytecodeGenerator::emitNode (this=0x7ffff0d98a00, dst=0x7ffff0dd896c, n=0x7fffafdf40a0) at ../../Source/JavaScriptCore/bytecompiler/BytecodeGenerator.h:406
#5  0x00007ffff642cde1 in JSC::BytecodeGenerator::initializeDefaultParameterValuesAndSetupFunctionScopeStack(JSC::FunctionParameters &, bool, JSC::FunctionNode *, JSC::SymbolTable *, int, const std::function<bool(WTF::UniquedStringImpl*)> &) (this=0x7ffff0d98a00, parameters=..., isSimpleParameterList=false, functionNode=0x7ffff0d91000, functionSymbolTable=0x7fffaede3e40, 
    symbolTableConstantIndex=1073741824, captures=...) at ../../Source/JavaScriptCore/bytecompiler/BytecodeGenerator.cpp:829
#6  0x00007ffff642a364 in JSC::BytecodeGenerator::BytecodeGenerator (this=0x7ffff0d98a00, vm=..., functionNode=0x7ffff0d91000, codeBlock=0x7fffaedb7e00, debuggerMode=JSC::DebuggerOff, 
    profilerMode=JSC::ProfilerOff, parentScopeTDZVariables=0x7fffaedcc790) at ../../Source/JavaScriptCore/bytecompiler/BytecodeGenerator.cpp:563
#7  0x00007ffff6422a2a in std::make_unique<JSC::BytecodeGenerator, JSC::VM&, JSC::FunctionNode*, JSC::UnlinkedFunctionCodeBlock*&, JSC::DebuggerMode&, JSC::ProfilerMode&, JSC::VariableEnvironment const*>
    () at ../../Source/WTF/wtf/StdLibExtras.h:316
#8  0x00007ffff6420b49 in JSC::BytecodeGenerator::generate<JSC::FunctionNode*, JSC::UnlinkedFunctionCodeBlock*&, JSC::DebuggerMode&, JSC::ProfilerMode&, JSC::VariableEnvironment const*> (vm=...)
    at ../../Source/JavaScriptCore/bytecompiler/BytecodeGenerator.h:296
#9  0x00007ffff641e444 in JSC::generateUnlinkedFunctionCodeBlock (vm=..., executable=0x7fffaedcc700, source=..., kind=JSC::CodeForConstruct, debuggerMode=JSC::DebuggerOff, profilerMode=JSC::ProfilerOff, 
    functionKind=JSC::UnlinkedNormalFunction, error=..., parseMode=JSC::SourceParseMode::MethodMode) at ../../Source/JavaScriptCore/bytecode/UnlinkedFunctionExecutable.cpp:73
#10 0x00007ffff641f372 in JSC::UnlinkedFunctionExecutable::unlinkedCodeBlockFor (this=0x7fffaedcc700, vm=..., source=..., specializationKind=JSC::CodeForConstruct, debuggerMode=JSC::DebuggerOff, 
    profilerMode=JSC::ProfilerOff, error=..., parseMode=JSC::SourceParseMode::MethodMode) at ../../Source/JavaScriptCore/bytecode/UnlinkedFunctionExecutable.cpp:210
...
---

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