ChakraCore segfaults during JsParseModuleSource in certain cases involving circular imports

[fatcerberus]

I haven't tried to reproduce this in isolation yet, only in miniSphere (my game engine), but I didn't see this before, so it seems to be a regression in the latest masters. Calling JsParseModuleSource with the debugger attached (i.e. JsDiagStartDebugging has been called) often results in a segfault due to null pointer dereference.

The null pointer dereference happens here (this is nullptr):
https://github.com/Microsoft/ChakraCore/blob/0adabdc5aae83b3d55e0b0c14aedd389a4eedc1f/lib/Common/DataStructures/BaseDictionary.h#L811

Prior to the crash, this assert was triggered:
https://github.com/Microsoft/ChakraCore/blob/0adabdc5aae83b3d55e0b0c14aedd389a4eedc1f/lib/Runtime/Language/SourceTextModuleRecord.cpp#L1149

And the stack trace at the time of the segfault:

>	ChakraCore.dll!JsUtil::BaseDictionary<int,unsigned int,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::FindEntryWithKey<int>(const int & key) Line 811	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<int,unsigned int,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::TryGetValue<int>(const int & key, unsigned int * value) Line 359	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::GetLocalExportSlotIndexByLocalName(int localNameId) Line 1154	C++	Symbols loaded.
 	ChakraCore.dll!ByteCodeGenerator::EnsureSymbolModuleSlots(Symbol * sym, FuncInfo * funcInfo) Line 3870	C++	Symbols loaded.
 	ChakraCore.dll!ByteCodeGenerator::EmitModuleExportAccess(Symbol * sym, Js::OpCode opcode, unsigned int location, FuncInfo * funcInfo) Line 3825	C++	Symbols loaded.
 	ChakraCore.dll!ByteCodeGenerator::EmitPropLoad(unsigned int lhsLocation, Symbol * sym, Ident * pid, FuncInfo * funcInfo, bool skipUseBeforeDeclarationCheck) Line 4952	C++	Symbols loaded.
 	ChakraCore.dll!Emit(ParseNode * pnode, ByteCodeGenerator * byteCodeGenerator, FuncInfo * funcInfo, int fReturnValue, bool isConstructorCall, ParseNode * bindPnode, bool isTopLevel) Line 10591	C++	Symbols loaded.
 	ChakraCore.dll!EmitCallTarget(ParseNode * pnodeTarget, int fSideEffectArgs, unsigned int * thisLocation, bool * releaseThisLocation, unsigned int * callObjLocation, ByteCodeGenerator * byteCodeGenerator, FuncInfo * funcInfo) Line 7586	C++	Symbols loaded.
 	ChakraCore.dll!EmitCall(ParseNode * pnode, ByteCodeGenerator * byteCodeGenerator, FuncInfo * funcInfo, int fReturnValue, int fEvaluateComponents, unsigned int overrideThisLocation, unsigned int newTargetLocation) Line 8074	C++	Symbols loaded.
 	ChakraCore.dll!Emit(ParseNode * pnode, ByteCodeGenerator * byteCodeGenerator, FuncInfo * funcInfo, int fReturnValue, bool isConstructorCall, ParseNode * bindPnode, bool isTopLevel) Line 10482	C++	Symbols loaded.
 	ChakraCore.dll!EmitOneArg(ParseNode * pnode, int fAssignRegs, ByteCodeGenerator * byteCodeGenerator, FuncInfo * funcInfo, unsigned short callSiteId, unsigned short & argIndex, unsigned short & spreadIndex, unsigned int argTempLocation, bool emitProfiledArgout, Js::AuxArray<unsigned int> * spreadIndices) Line 6942	C++	Symbols loaded.
 	ChakraCore.dll!EmitArgs(ParseNode * pnode, int fAssignRegs, ByteCodeGenerator * byteCodeGenerator, FuncInfo * funcInfo, unsigned short callSiteId, bool emitProfiledArgouts, Js::AuxArray<unsigned int> * spreadIndices) Line 7048	C++	Symbols loaded.
 	ChakraCore.dll!EmitArgList(ParseNode * pnode, unsigned int thisLocation, unsigned int newTargetLocation, int fIsEval, int fAssignRegs, ByteCodeGenerator * byteCodeGenerator, FuncInfo * funcInfo, unsigned short callSiteId, unsigned short argsCountForStartCall, bool emitArgOutsAtEnd, bool emitProfiledArgouts, unsigned short spreadArgCount, Js::AuxArray<unsigned int> * * spreadIndices) Line 7196	C++	Symbols loaded.
 	ChakraCore.dll!EmitCall(ParseNode * pnode, ByteCodeGenerator * byteCodeGenerator, FuncInfo * funcInfo, int fReturnValue, int fEvaluateComponents, unsigned int overrideThisLocation, unsigned int newTargetLocation) Line 8092	C++	Symbols loaded.
 	ChakraCore.dll!Emit(ParseNode * pnode, ByteCodeGenerator * byteCodeGenerator, FuncInfo * funcInfo, int fReturnValue, bool isConstructorCall, ParseNode * bindPnode, bool isTopLevel) Line 10482	C++	Symbols loaded.
 	ChakraCore.dll!EmitOneArg(ParseNode * pnode, int fAssignRegs, ByteCodeGenerator * byteCodeGenerator, FuncInfo * funcInfo, unsigned short callSiteId, unsigned short & argIndex, unsigned short & spreadIndex, unsigned int argTempLocation, bool emitProfiledArgout, Js::AuxArray<unsigned int> * spreadIndices) Line 6942	C++	Symbols loaded.
 	ChakraCore.dll!EmitArgs(ParseNode * pnode, int fAssignRegs, ByteCodeGenerator * byteCodeGenerator, FuncInfo * funcInfo, unsigned short callSiteId, bool emitProfiledArgouts, Js::AuxArray<unsigned int> * spreadIndices) Line 7054	C++	Symbols loaded.
 	ChakraCore.dll!EmitArgList(ParseNode * pnode, unsigned int thisLocation, unsigned int newTargetLocation, int fIsEval, int fAssignRegs, ByteCodeGenerator * byteCodeGenerator, FuncInfo * funcInfo, unsigned short callSiteId, unsigned short argsCountForStartCall, bool emitArgOutsAtEnd, bool emitProfiledArgouts, unsigned short spreadArgCount, Js::AuxArray<unsigned int> * * spreadIndices) Line 7196	C++	Symbols loaded.
 	ChakraCore.dll!EmitCall(ParseNode * pnode, ByteCodeGenerator * byteCodeGenerator, FuncInfo * funcInfo, int fReturnValue, int fEvaluateComponents, unsigned int overrideThisLocation, unsigned int newTargetLocation) Line 8092	C++	Symbols loaded.
 	ChakraCore.dll!Emit(ParseNode * pnode, ByteCodeGenerator * byteCodeGenerator, FuncInfo * funcInfo, int fReturnValue, bool isConstructorCall, ParseNode * bindPnode, bool isTopLevel) Line 10482	C++	Symbols loaded.
 	ChakraCore.dll!Emit(ParseNode * pnode, ByteCodeGenerator * byteCodeGenerator, FuncInfo * funcInfo, int fReturnValue, bool isConstructorCall, ParseNode * bindPnode, bool isTopLevel) Line 11059	C++	Symbols loaded.
 	ChakraCore.dll!ByteCodeGenerator::EmitTopLevelStatement(ParseNode * stmt, FuncInfo * funcInfo, int fReturnValue) Line 958	C++	Symbols loaded.
 	ChakraCore.dll!ByteCodeGenerator::EmitFunctionBody(FuncInfo * funcInfo) Line 2502	C++	Symbols loaded.
 	ChakraCore.dll!ByteCodeGenerator::EmitOneFunction(ParseNode * pnode) Line 3133	C++	Symbols loaded.
 	ChakraCore.dll!ByteCodeGenerator::EmitScopeList(ParseNode * pnode, ParseNode * breakOnBodyScopeNode) Line 3424	C++	Symbols loaded.
 	ChakraCore.dll!ByteCodeGenerator::EmitScopeList(ParseNode * pnode, ParseNode * breakOnBodyScopeNode) Line 3435	C++	Symbols loaded.
 	ChakraCore.dll!ByteCodeGenerator::EmitScopeList(ParseNode * pnode, ParseNode * breakOnBodyScopeNode) Line 3435	C++	Symbols loaded.
 	ChakraCore.dll!ByteCodeGenerator::EmitScopeList(ParseNode * pnode, ParseNode * breakOnBodyScopeNode) Line 3435	C++	Symbols loaded.
 	ChakraCore.dll!ByteCodeGenerator::EmitScopeList(ParseNode * pnode, ParseNode * breakOnBodyScopeNode) Line 3423	C++	Symbols loaded.
 	ChakraCore.dll!ByteCodeGenerator::EmitScopeList(ParseNode * pnode, ParseNode * breakOnBodyScopeNode) Line 3435	C++	Symbols loaded.
 	ChakraCore.dll!ByteCodeGenerator::EmitScopeList(ParseNode * pnode, ParseNode * breakOnBodyScopeNode) Line 3423	C++	Symbols loaded.
 	ChakraCore.dll!ByteCodeGenerator::EmitProgram(ParseNode * pnodeProg) Line 2537	C++	Symbols loaded.
 	ChakraCore.dll!ByteCodeGenerator::Generate(ParseNode * pnode, unsigned int grfscr, ByteCodeGenerator * byteCodeGenerator, Js::ParseableFunctionInfo * * ppRootFunc, unsigned int sourceIndex, bool forceNoNative, Parser * parser, Js::ScriptFunction * * functionRef) Line 1974	C++	Symbols loaded.
 	ChakraCore.dll!GenerateByteCode(ParseNode * pnode, unsigned int grfscr, Js::ScriptContext * scriptContext, Js::ParseableFunctionInfo * * ppRootFunc, unsigned int sourceIndex, bool forceNoNative, Parser * parser, CompileScriptException * pse, Js::ScopeInfo * parentScopeInfo, Js::ScriptFunction * * functionRef) Line 2163	C++	Symbols loaded.
 	ChakraCore.dll!Js::ScriptContext::GenerateRootFunction(ParseNode * parseTree, unsigned int sourceIndex, Parser * parser, unsigned int grfscr, CompileScriptException * pse, const wchar_t * rootDisplayName) Line 2079	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::ModuleDeclarationInstantiation() Line 837	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::ModuleDeclarationInstantiation::__l9::<lambda>(const wchar_t * specifier, Js::SourceTextModuleRecord * moduleRecord) Line 814	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const *,Js::SourceTextModuleRecord *,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::Map::__l2::<lambda>(const wchar_t * const & key, Js::SourceTextModuleRecord * const & value) Line 571	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const *,Js::SourceTextModuleRecord *,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::MapUntil::__l2::<lambda>(const JsUtil::SimpleDictionaryEntry<wchar_t const *,Js::SourceTextModuleRecord *> & entry) Line 581	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const * __ptr64,Js::SourceTextModuleRecord * __ptr64,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::MapEntryUntil<bool <lambda>(const JsUtil::SimpleDictionaryEntry<wchar_t const *,Js::SourceTextModuleRecord *> &) >(JsUtil::BaseDictionary<wchar_t const *,Js::SourceTextModuleRecord *,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::MapUntil::__l2::bool <lambda>(const JsUtil::SimpleDictionaryEntry<wchar_t const *,Js::SourceTextModuleRecord *> &) fn) Line 746	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const * __ptr64,Js::SourceTextModuleRecord * __ptr64,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::MapUntil<bool <lambda>(const wchar_t * const &, Js::SourceTextModuleRecord * const &) >(JsUtil::BaseDictionary<wchar_t const *,Js::SourceTextModuleRecord *,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::Map::__l2::bool <lambda>(const wchar_t * const &, Js::SourceTextModuleRecord * const &) fn) Line 582	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const * __ptr64,Js::SourceTextModuleRecord * __ptr64,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::Map<void <lambda>(const wchar_t *, Js::SourceTextModuleRecord *) >(Js::SourceTextModuleRecord::ModuleDeclarationInstantiation::__l9::void <lambda>(const wchar_t *, Js::SourceTextModuleRecord *) fn) Line 573	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::ModuleDeclarationInstantiation() Line 817	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::ModuleDeclarationInstantiation::__l9::<lambda>(const wchar_t * specifier, Js::SourceTextModuleRecord * moduleRecord) Line 814	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const *,Js::SourceTextModuleRecord *,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::Map::__l2::<lambda>(const wchar_t * const & key, Js::SourceTextModuleRecord * const & value) Line 571	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const *,Js::SourceTextModuleRecord *,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::MapUntil::__l2::<lambda>(const JsUtil::SimpleDictionaryEntry<wchar_t const *,Js::SourceTextModuleRecord *> & entry) Line 581	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const * __ptr64,Js::SourceTextModuleRecord * __ptr64,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::MapEntryUntil<bool <lambda>(const JsUtil::SimpleDictionaryEntry<wchar_t const *,Js::SourceTextModuleRecord *> &) >(JsUtil::BaseDictionary<wchar_t const *,Js::SourceTextModuleRecord *,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::MapUntil::__l2::bool <lambda>(const JsUtil::SimpleDictionaryEntry<wchar_t const *,Js::SourceTextModuleRecord *> &) fn) Line 746	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const * __ptr64,Js::SourceTextModuleRecord * __ptr64,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::MapUntil<bool <lambda>(const wchar_t * const &, Js::SourceTextModuleRecord * const &) >(JsUtil::BaseDictionary<wchar_t const *,Js::SourceTextModuleRecord *,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::Map::__l2::bool <lambda>(const wchar_t * const &, Js::SourceTextModuleRecord * const &) fn) Line 582	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const * __ptr64,Js::SourceTextModuleRecord * __ptr64,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::Map<void <lambda>(const wchar_t *, Js::SourceTextModuleRecord *) >(Js::SourceTextModuleRecord::ModuleDeclarationInstantiation::__l9::void <lambda>(const wchar_t *, Js::SourceTextModuleRecord *) fn) Line 573	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::ModuleDeclarationInstantiation() Line 817	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::ModuleDeclarationInstantiation::__l9::<lambda>(const wchar_t * specifier, Js::SourceTextModuleRecord * moduleRecord) Line 814	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const *,Js::SourceTextModuleRecord *,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::Map::__l2::<lambda>(const wchar_t * const & key, Js::SourceTextModuleRecord * const & value) Line 571	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const *,Js::SourceTextModuleRecord *,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::MapUntil::__l2::<lambda>(const JsUtil::SimpleDictionaryEntry<wchar_t const *,Js::SourceTextModuleRecord *> & entry) Line 581	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const * __ptr64,Js::SourceTextModuleRecord * __ptr64,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::MapEntryUntil<bool <lambda>(const JsUtil::SimpleDictionaryEntry<wchar_t const *,Js::SourceTextModuleRecord *> &) >(JsUtil::BaseDictionary<wchar_t const *,Js::SourceTextModuleRecord *,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::MapUntil::__l2::bool <lambda>(const JsUtil::SimpleDictionaryEntry<wchar_t const *,Js::SourceTextModuleRecord *> &) fn) Line 746	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const * __ptr64,Js::SourceTextModuleRecord * __ptr64,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::MapUntil<bool <lambda>(const wchar_t * const &, Js::SourceTextModuleRecord * const &) >(JsUtil::BaseDictionary<wchar_t const *,Js::SourceTextModuleRecord *,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::Map::__l2::bool <lambda>(const wchar_t * const &, Js::SourceTextModuleRecord * const &) fn) Line 582	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const * __ptr64,Js::SourceTextModuleRecord * __ptr64,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::Map<void <lambda>(const wchar_t *, Js::SourceTextModuleRecord *) >(Js::SourceTextModuleRecord::ModuleDeclarationInstantiation::__l9::void <lambda>(const wchar_t *, Js::SourceTextModuleRecord *) fn) Line 573	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::ModuleDeclarationInstantiation() Line 817	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::ModuleDeclarationInstantiation::__l9::<lambda>(const wchar_t * specifier, Js::SourceTextModuleRecord * moduleRecord) Line 814	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const *,Js::SourceTextModuleRecord *,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::Map::__l2::<lambda>(const wchar_t * const & key, Js::SourceTextModuleRecord * const & value) Line 571	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const *,Js::SourceTextModuleRecord *,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::MapUntil::__l2::<lambda>(const JsUtil::SimpleDictionaryEntry<wchar_t const *,Js::SourceTextModuleRecord *> & entry) Line 581	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const * __ptr64,Js::SourceTextModuleRecord * __ptr64,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::MapEntryUntil<bool <lambda>(const JsUtil::SimpleDictionaryEntry<wchar_t const *,Js::SourceTextModuleRecord *> &) >(JsUtil::BaseDictionary<wchar_t const *,Js::SourceTextModuleRecord *,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::MapUntil::__l2::bool <lambda>(const JsUtil::SimpleDictionaryEntry<wchar_t const *,Js::SourceTextModuleRecord *> &) fn) Line 746	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const * __ptr64,Js::SourceTextModuleRecord * __ptr64,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::MapUntil<bool <lambda>(const wchar_t * const &, Js::SourceTextModuleRecord * const &) >(JsUtil::BaseDictionary<wchar_t const *,Js::SourceTextModuleRecord *,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::Map::__l2::bool <lambda>(const wchar_t * const &, Js::SourceTextModuleRecord * const &) fn) Line 582	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const * __ptr64,Js::SourceTextModuleRecord * __ptr64,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::Map<void <lambda>(const wchar_t *, Js::SourceTextModuleRecord *) >(Js::SourceTextModuleRecord::ModuleDeclarationInstantiation::__l9::void <lambda>(const wchar_t *, Js::SourceTextModuleRecord *) fn) Line 573	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::ModuleDeclarationInstantiation() Line 817	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::ModuleDeclarationInstantiation::__l9::<lambda>(const wchar_t * specifier, Js::SourceTextModuleRecord * moduleRecord) Line 814	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const *,Js::SourceTextModuleRecord *,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::Map::__l2::<lambda>(const wchar_t * const & key, Js::SourceTextModuleRecord * const & value) Line 571	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const *,Js::SourceTextModuleRecord *,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::MapUntil::__l2::<lambda>(const JsUtil::SimpleDictionaryEntry<wchar_t const *,Js::SourceTextModuleRecord *> & entry) Line 581	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const * __ptr64,Js::SourceTextModuleRecord * __ptr64,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::MapEntryUntil<bool <lambda>(const JsUtil::SimpleDictionaryEntry<wchar_t const *,Js::SourceTextModuleRecord *> &) >(JsUtil::BaseDictionary<wchar_t const *,Js::SourceTextModuleRecord *,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::MapUntil::__l2::bool <lambda>(const JsUtil::SimpleDictionaryEntry<wchar_t const *,Js::SourceTextModuleRecord *> &) fn) Line 746	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const * __ptr64,Js::SourceTextModuleRecord * __ptr64,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::MapUntil<bool <lambda>(const wchar_t * const &, Js::SourceTextModuleRecord * const &) >(JsUtil::BaseDictionary<wchar_t const *,Js::SourceTextModuleRecord *,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::Map::__l2::bool <lambda>(const wchar_t * const &, Js::SourceTextModuleRecord * const &) fn) Line 582	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const * __ptr64,Js::SourceTextModuleRecord * __ptr64,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::Map<void <lambda>(const wchar_t *, Js::SourceTextModuleRecord *) >(Js::SourceTextModuleRecord::ModuleDeclarationInstantiation::__l9::void <lambda>(const wchar_t *, Js::SourceTextModuleRecord *) fn) Line 573	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::ModuleDeclarationInstantiation() Line 817	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::ModuleDeclarationInstantiation::__l9::<lambda>(const wchar_t * specifier, Js::SourceTextModuleRecord * moduleRecord) Line 814	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const *,Js::SourceTextModuleRecord *,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::Map::__l2::<lambda>(const wchar_t * const & key, Js::SourceTextModuleRecord * const & value) Line 571	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const *,Js::SourceTextModuleRecord *,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::MapUntil::__l2::<lambda>(const JsUtil::SimpleDictionaryEntry<wchar_t const *,Js::SourceTextModuleRecord *> & entry) Line 581	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const * __ptr64,Js::SourceTextModuleRecord * __ptr64,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::MapEntryUntil<bool <lambda>(const JsUtil::SimpleDictionaryEntry<wchar_t const *,Js::SourceTextModuleRecord *> &) >(JsUtil::BaseDictionary<wchar_t const *,Js::SourceTextModuleRecord *,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::MapUntil::__l2::bool <lambda>(const JsUtil::SimpleDictionaryEntry<wchar_t const *,Js::SourceTextModuleRecord *> &) fn) Line 746	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const * __ptr64,Js::SourceTextModuleRecord * __ptr64,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::MapUntil<bool <lambda>(const wchar_t * const &, Js::SourceTextModuleRecord * const &) >(JsUtil::BaseDictionary<wchar_t const *,Js::SourceTextModuleRecord *,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::Map::__l2::bool <lambda>(const wchar_t * const &, Js::SourceTextModuleRecord * const &) fn) Line 582	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const * __ptr64,Js::SourceTextModuleRecord * __ptr64,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::Map<void <lambda>(const wchar_t *, Js::SourceTextModuleRecord *) >(Js::SourceTextModuleRecord::ModuleDeclarationInstantiation::__l9::void <lambda>(const wchar_t *, Js::SourceTextModuleRecord *) fn) Line 573	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::ModuleDeclarationInstantiation() Line 817	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::ModuleDeclarationInstantiation::__l9::<lambda>(const wchar_t * specifier, Js::SourceTextModuleRecord * moduleRecord) Line 814	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const *,Js::SourceTextModuleRecord *,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::Map::__l2::<lambda>(const wchar_t * const & key, Js::SourceTextModuleRecord * const & value) Line 571	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const *,Js::SourceTextModuleRecord *,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::MapUntil::__l2::<lambda>(const JsUtil::SimpleDictionaryEntry<wchar_t const *,Js::SourceTextModuleRecord *> & entry) Line 581	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const * __ptr64,Js::SourceTextModuleRecord * __ptr64,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::MapEntryUntil<bool <lambda>(const JsUtil::SimpleDictionaryEntry<wchar_t const *,Js::SourceTextModuleRecord *> &) >(JsUtil::BaseDictionary<wchar_t const *,Js::SourceTextModuleRecord *,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::MapUntil::__l2::bool <lambda>(const JsUtil::SimpleDictionaryEntry<wchar_t const *,Js::SourceTextModuleRecord *> &) fn) Line 746	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const * __ptr64,Js::SourceTextModuleRecord * __ptr64,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::MapUntil<bool <lambda>(const wchar_t * const &, Js::SourceTextModuleRecord * const &) >(JsUtil::BaseDictionary<wchar_t const *,Js::SourceTextModuleRecord *,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::Map::__l2::bool <lambda>(const wchar_t * const &, Js::SourceTextModuleRecord * const &) fn) Line 582	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const * __ptr64,Js::SourceTextModuleRecord * __ptr64,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::Map<void <lambda>(const wchar_t *, Js::SourceTextModuleRecord *) >(Js::SourceTextModuleRecord::ModuleDeclarationInstantiation::__l9::void <lambda>(const wchar_t *, Js::SourceTextModuleRecord *) fn) Line 573	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::ModuleDeclarationInstantiation() Line 817	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::ModuleDeclarationInstantiation::__l9::<lambda>(const wchar_t * specifier, Js::SourceTextModuleRecord * moduleRecord) Line 814	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const *,Js::SourceTextModuleRecord *,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::Map::__l2::<lambda>(const wchar_t * const & key, Js::SourceTextModuleRecord * const & value) Line 571	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const *,Js::SourceTextModuleRecord *,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::MapUntil::__l2::<lambda>(const JsUtil::SimpleDictionaryEntry<wchar_t const *,Js::SourceTextModuleRecord *> & entry) Line 581	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const * __ptr64,Js::SourceTextModuleRecord * __ptr64,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::MapEntryUntil<bool <lambda>(const JsUtil::SimpleDictionaryEntry<wchar_t const *,Js::SourceTextModuleRecord *> &) >(JsUtil::BaseDictionary<wchar_t const *,Js::SourceTextModuleRecord *,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::MapUntil::__l2::bool <lambda>(const JsUtil::SimpleDictionaryEntry<wchar_t const *,Js::SourceTextModuleRecord *> &) fn) Line 746	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const * __ptr64,Js::SourceTextModuleRecord * __ptr64,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::MapUntil<bool <lambda>(const wchar_t * const &, Js::SourceTextModuleRecord * const &) >(JsUtil::BaseDictionary<wchar_t const *,Js::SourceTextModuleRecord *,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::Map::__l2::bool <lambda>(const wchar_t * const &, Js::SourceTextModuleRecord * const &) fn) Line 582	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const * __ptr64,Js::SourceTextModuleRecord * __ptr64,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::Map<void <lambda>(const wchar_t *, Js::SourceTextModuleRecord *) >(Js::SourceTextModuleRecord::ModuleDeclarationInstantiation::__l9::void <lambda>(const wchar_t *, Js::SourceTextModuleRecord *) fn) Line 573	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::ModuleDeclarationInstantiation() Line 817	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::ModuleDeclarationInstantiation::__l9::<lambda>(const wchar_t * specifier, Js::SourceTextModuleRecord * moduleRecord) Line 814	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const *,Js::SourceTextModuleRecord *,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::Map::__l2::<lambda>(const wchar_t * const & key, Js::SourceTextModuleRecord * const & value) Line 571	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const *,Js::SourceTextModuleRecord *,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::MapUntil::__l2::<lambda>(const JsUtil::SimpleDictionaryEntry<wchar_t const *,Js::SourceTextModuleRecord *> & entry) Line 581	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const * __ptr64,Js::SourceTextModuleRecord * __ptr64,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::MapEntryUntil<bool <lambda>(const JsUtil::SimpleDictionaryEntry<wchar_t const *,Js::SourceTextModuleRecord *> &) >(JsUtil::BaseDictionary<wchar_t const *,Js::SourceTextModuleRecord *,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::MapUntil::__l2::bool <lambda>(const JsUtil::SimpleDictionaryEntry<wchar_t const *,Js::SourceTextModuleRecord *> &) fn) Line 746	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const * __ptr64,Js::SourceTextModuleRecord * __ptr64,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::MapUntil<bool <lambda>(const wchar_t * const &, Js::SourceTextModuleRecord * const &) >(JsUtil::BaseDictionary<wchar_t const *,Js::SourceTextModuleRecord *,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::Map::__l2::bool <lambda>(const wchar_t * const &, Js::SourceTextModuleRecord * const &) fn) Line 582	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const * __ptr64,Js::SourceTextModuleRecord * __ptr64,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::Map<void <lambda>(const wchar_t *, Js::SourceTextModuleRecord *) >(Js::SourceTextModuleRecord::ModuleDeclarationInstantiation::__l9::void <lambda>(const wchar_t *, Js::SourceTextModuleRecord *) fn) Line 573	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::ModuleDeclarationInstantiation() Line 817	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::ModuleDeclarationInstantiation::__l9::<lambda>(const wchar_t * specifier, Js::SourceTextModuleRecord * moduleRecord) Line 814	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const *,Js::SourceTextModuleRecord *,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::Map::__l2::<lambda>(const wchar_t * const & key, Js::SourceTextModuleRecord * const & value) Line 571	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const *,Js::SourceTextModuleRecord *,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::MapUntil::__l2::<lambda>(const JsUtil::SimpleDictionaryEntry<wchar_t const *,Js::SourceTextModuleRecord *> & entry) Line 581	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const * __ptr64,Js::SourceTextModuleRecord * __ptr64,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::MapEntryUntil<bool <lambda>(const JsUtil::SimpleDictionaryEntry<wchar_t const *,Js::SourceTextModuleRecord *> &) >(JsUtil::BaseDictionary<wchar_t const *,Js::SourceTextModuleRecord *,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::MapUntil::__l2::bool <lambda>(const JsUtil::SimpleDictionaryEntry<wchar_t const *,Js::SourceTextModuleRecord *> &) fn) Line 746	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const * __ptr64,Js::SourceTextModuleRecord * __ptr64,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::MapUntil<bool <lambda>(const wchar_t * const &, Js::SourceTextModuleRecord * const &) >(JsUtil::BaseDictionary<wchar_t const *,Js::SourceTextModuleRecord *,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::Map::__l2::bool <lambda>(const wchar_t * const &, Js::SourceTextModuleRecord * const &) fn) Line 582	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::BaseDictionary<wchar_t const * __ptr64,Js::SourceTextModuleRecord * __ptr64,Memory::ArenaAllocator,DictionarySizePolicy<PowerOf2Policy,2,2,1,4>,DefaultComparer,JsUtil::SimpleDictionaryEntry,JsUtil::NoResizeLock>::Map<void <lambda>(const wchar_t *, Js::SourceTextModuleRecord *) >(Js::SourceTextModuleRecord::ModuleDeclarationInstantiation::__l9::void <lambda>(const wchar_t *, Js::SourceTextModuleRecord *) fn) Line 573	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::ModuleDeclarationInstantiation() Line 817	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::PrepareForModuleDeclarationInitialization() Line 325	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::OnChildModuleReady(Js::SourceTextModuleRecord * childModule, void * childException) Line 387	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::NotifyParentsAsNeeded::__l5::<lambda>(unsigned int i, Js::SourceTextModuleRecord * parentModule) Line 226	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::List<Js::SourceTextModuleRecord * __ptr64,Memory::Recycler,0,Js::CopyRemovePolicy,DefaultComparer>::MapFrom<void <lambda>(unsigned int, Js::SourceTextModuleRecord *) >(int start, Js::SourceTextModuleRecord::NotifyParentsAsNeeded::__l5::void <lambda>(unsigned int, Js::SourceTextModuleRecord *) map) Line 566	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::List<Js::SourceTextModuleRecord * __ptr64,Memory::Recycler,0,Js::CopyRemovePolicy,DefaultComparer>::Map<void <lambda>(unsigned int, Js::SourceTextModuleRecord *) >(Js::SourceTextModuleRecord::NotifyParentsAsNeeded::__l5::void <lambda>(unsigned int, Js::SourceTextModuleRecord *) map) Line 543	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::NotifyParentsAsNeeded() Line 228	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::PrepareForModuleDeclarationInitialization() Line 316	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::OnChildModuleReady(Js::SourceTextModuleRecord * childModule, void * childException) Line 387	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::NotifyParentsAsNeeded::__l5::<lambda>(unsigned int i, Js::SourceTextModuleRecord * parentModule) Line 226	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::List<Js::SourceTextModuleRecord * __ptr64,Memory::Recycler,0,Js::CopyRemovePolicy,DefaultComparer>::MapFrom<void <lambda>(unsigned int, Js::SourceTextModuleRecord *) >(int start, Js::SourceTextModuleRecord::NotifyParentsAsNeeded::__l5::void <lambda>(unsigned int, Js::SourceTextModuleRecord *) map) Line 566	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::List<Js::SourceTextModuleRecord * __ptr64,Memory::Recycler,0,Js::CopyRemovePolicy,DefaultComparer>::Map<void <lambda>(unsigned int, Js::SourceTextModuleRecord *) >(Js::SourceTextModuleRecord::NotifyParentsAsNeeded::__l5::void <lambda>(unsigned int, Js::SourceTextModuleRecord *) map) Line 543	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::NotifyParentsAsNeeded() Line 228	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::PrepareForModuleDeclarationInitialization() Line 316	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::OnChildModuleReady(Js::SourceTextModuleRecord * childModule, void * childException) Line 387	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::NotifyParentsAsNeeded::__l5::<lambda>(unsigned int i, Js::SourceTextModuleRecord * parentModule) Line 226	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::List<Js::SourceTextModuleRecord * __ptr64,Memory::Recycler,0,Js::CopyRemovePolicy,DefaultComparer>::MapFrom<void <lambda>(unsigned int, Js::SourceTextModuleRecord *) >(int start, Js::SourceTextModuleRecord::NotifyParentsAsNeeded::__l5::void <lambda>(unsigned int, Js::SourceTextModuleRecord *) map) Line 566	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::List<Js::SourceTextModuleRecord * __ptr64,Memory::Recycler,0,Js::CopyRemovePolicy,DefaultComparer>::Map<void <lambda>(unsigned int, Js::SourceTextModuleRecord *) >(Js::SourceTextModuleRecord::NotifyParentsAsNeeded::__l5::void <lambda>(unsigned int, Js::SourceTextModuleRecord *) map) Line 543	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::NotifyParentsAsNeeded() Line 228	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::PrepareForModuleDeclarationInitialization() Line 316	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::OnChildModuleReady(Js::SourceTextModuleRecord * childModule, void * childException) Line 387	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::NotifyParentsAsNeeded::__l5::<lambda>(unsigned int i, Js::SourceTextModuleRecord * parentModule) Line 226	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::List<Js::SourceTextModuleRecord * __ptr64,Memory::Recycler,0,Js::CopyRemovePolicy,DefaultComparer>::MapFrom<void <lambda>(unsigned int, Js::SourceTextModuleRecord *) >(int start, Js::SourceTextModuleRecord::NotifyParentsAsNeeded::__l5::void <lambda>(unsigned int, Js::SourceTextModuleRecord *) map) Line 566	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::List<Js::SourceTextModuleRecord * __ptr64,Memory::Recycler,0,Js::CopyRemovePolicy,DefaultComparer>::Map<void <lambda>(unsigned int, Js::SourceTextModuleRecord *) >(Js::SourceTextModuleRecord::NotifyParentsAsNeeded::__l5::void <lambda>(unsigned int, Js::SourceTextModuleRecord *) map) Line 543	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::NotifyParentsAsNeeded() Line 228	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::PrepareForModuleDeclarationInitialization() Line 316	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::OnChildModuleReady(Js::SourceTextModuleRecord * childModule, void * childException) Line 387	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::NotifyParentsAsNeeded::__l5::<lambda>(unsigned int i, Js::SourceTextModuleRecord * parentModule) Line 226	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::List<Js::SourceTextModuleRecord * __ptr64,Memory::Recycler,0,Js::CopyRemovePolicy,DefaultComparer>::MapFrom<void <lambda>(unsigned int, Js::SourceTextModuleRecord *) >(int start, Js::SourceTextModuleRecord::NotifyParentsAsNeeded::__l5::void <lambda>(unsigned int, Js::SourceTextModuleRecord *) map) Line 566	C++	Symbols loaded.
 	ChakraCore.dll!JsUtil::List<Js::SourceTextModuleRecord * __ptr64,Memory::Recycler,0,Js::CopyRemovePolicy,DefaultComparer>::Map<void <lambda>(unsigned int, Js::SourceTextModuleRecord *) >(Js::SourceTextModuleRecord::NotifyParentsAsNeeded::__l5::void <lambda>(unsigned int, Js::SourceTextModuleRecord *) map) Line 543	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::NotifyParentsAsNeeded() Line 228	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::PrepareForModuleDeclarationInitialization() Line 316	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::PostParseProcess() Line 251	C++	Symbols loaded.
 	ChakraCore.dll!Js::SourceTextModuleRecord::ParseSource(unsigned char * sourceText, unsigned int sourceLength, SRCINFO * srcInfo, void * * exceptionVar, bool isUtf8) Line 158	C++	Symbols loaded.
 	ChakraCore.dll!JsParseModuleSource::__l2::<lambda>() Line 101	C++	Symbols loaded.
 	ChakraCore.dll!GlobalAPIWrapper_NoRecord::__l2::<lambda>() Line 168	C++	Symbols loaded.
 	ChakraCore.dll!GlobalAPIWrapper_Core<_JsErrorCode <lambda>(void) >(GlobalAPIWrapper_NoRecord::__l2::_JsErrorCode <lambda>(void) fn) Line 127	C++	Symbols loaded.
 	ChakraCore.dll!GlobalAPIWrapper_NoRecord<_JsErrorCode <lambda>(void) >(JsParseModuleSource::__l2::_JsErrorCode <lambda>(void) fn) Line 169	C++	Symbols loaded.
 	ChakraCore.dll!JsParseModuleSource(void * requestModule, unsigned __int64 sourceContext, unsigned char * sourceText, unsigned int sourceLength, JsParseModuleSourceFlags sourceFlag, void * * exceptionValueRef) Line 76	C++	Symbols loaded.
 	spherun.exe!jsal_update(bool in_event_loop) Line 260	C	Symbols loaded.
 	spherun.exe!jsal_eval_module(const char * filename) Line 562	C	Symbols loaded.
 	spherun.exe!jsal_try_eval_module(const char * filename) Line 1949	C	Symbols loaded.
 	spherun.exe!pegasus_eval_module(const char * filename) Line 932	C	Symbols loaded.
 	spherun.exe!main(int argc, char * * argv) Line 307	C	Symbols loaded.

[obastemur]

I’ve been looking at JSModule* api / implementation recently. Taking this one.

[obastemur]

@fatcerberus , I couldn't repro the issue. Appreciate, if you may provide a way to repro.

[fatcerberus]

I initially thought this was connected with the debugger, but now I don't think so: the crash happens in my debugger-enabled build, even with the --performance option that avoids calling JsDiagStartDebugging--but my standard "redist" build doesn't crash at all. I'll need to do more investigation to figure out what's different between the two builds and then I should be able to come up with a repro.

[obastemur]

I did push debugger attach / detach in combination with JsModule* without issue. As you said, the issue doesn't look like debugger related.

What are the core differences between redist and other build options you have?

[fatcerberus]

I have two main builds: redist (minisphere) and developer (spherun). Both use the same copy of ChakraCore.dll, the only relevant differences are:

1. spherun is compiled as a console app (for logging purposes) while the redist is compiled as a GUI app. Only relevant on Windows as this distinction doesn’t exist on Unix platforms.
2. Redist doesn’t call JsDiagStartDebugging and disables the debug server. Note though that spherun --performance does the same thing.

However spherun causes the above crash (even with the performance switch) and redist does not. So I’m at a loss for what the cause is and will need to investigate more thoroughly first. I’ll get back to you once I know more.

[fatcerberus]

Okay, I found the difference: redist uses the local filename as the module specifier, while the developer build remaps filenames based on a source map. Commenting out the remapping code makes the crashes go away. What I can’t figure out is why that is the case; I’ve verified with the debugger that the remapping works as expected for every single module, and the crashes didn’t start until I upgraded to a recent ChakraCore master. AppVerifier also didn’t detect any heap corruption. So I’m at a loss here.

My next step will be to bisect ChakraCore to find exactly which commit introduced the bug. Hopefully that will shed some light on what’s going wrong.

[obastemur]

By remapping, do you mean the order of imported files?

[fatcerberus]

No, I just remap the filename/URL, e.g.
@/scripts/main.js -> src/main.js

Modules are loaded the same, just the URLs are remapped to match their location in the source tree.

[fatcerberus]

Updated to latest master again, now I'm getting a segfault here:
https://github.com/Microsoft/ChakraCore/blob/39f7ce4f882088d05f87e4eb32fa60e5b2dabaad/lib/Runtime/Language/SourceTextModuleRecord.cpp#L1154

localExportMapByLocalName is nullptr. As before, the crashes only happen when I remap filenames. My module resolver works the same in both cases (that is, the local name is used to resolve relative specifiers, never the source name), so I don't understand why this happens. It's like a module record isn't being initialized properly or something.

[fatcerberus]

The only lead I've been able to find is that this is somehow related to circular imports. But I can't reproduce it reliably, and whether the crash triggers seems to be strangely dependent on the exact specifier strings used. It's possible this is a bug in the host (miniSphere), but I can't find anything wrong. If I can manage to reproduce this in isolation I'll definitely get back to you!

[rhuanjl]

Looked at this with @fatcerberus still not sure what the cause is it appears to be related to convoluted circular imports (which the original test case also contained) and not to the debugger at all.

@obastemur We do however now have a repro in ch - so it's not an error exclusive to the miniSphere code.

The crash is always in the sample place:
https://github.com/Microsoft/ChakraCore/blob/39f7ce4f882088d05f87e4eb32fa60e5b2dabaad/lib/Runtime/Language/SourceTextModuleRecord.cpp#L1146-L1160

Steps to repro

1. Build latest master of cc

2. ./ch testStart.js

With the following scripts:

//testStart.js
WScript.LoadScriptFile("main.js","module");

//main.js
import Thing1 from './thing1.js';
import Thing2 from './thing2.js';

export { Thing1, Thing2 };

export default
function main()
{
    print("The Cat in the Hat");
    Thing1();
    Thing2();
}

//thing1.js
import { Thing2 } from './main.js';

export default
function Thing1()
{
    print("Thing 1");
    Thing2();
}

//thing2.js
import { Thing1 } from './main.js';

export default
function Thing2()
{
    print("Thing 2");
}

[akroshg]

I can confirm that the last test provided by @rhuanjl seems to be reproing.
I see this assert

ASSERTION 29984: (C:\cg\core\lib\Runtime\Language\SourceTextModuleRecord.cpp, line 1164) localExportSlots != nullptr
 Failure: (localExportSlots != nullptr)
FATAL ERROR: ch.exe failed due to exception code c0000420