Status: New
Owner: ----
New issue 2338 by alysson...@gmail.com: V8 engine embedded in a DLL doesn't
work when using the V8/javascript debug system
http://code.google.com/p/v8/issues/detail?id=2338
consider the following code:
---------------------
HandleScope handle_scope;
Persistent<Context> context = Context::New();
Context::Scope scope(context);
Debug::EnableAgent("sometest", 9696, true);
Handle<Script> scr = Script::Compile(String::New("'teste' + 'hello'"));
scr->Run();
--------------------
it works fine if it's built as an "exe" file, but if built as a dll/dynamic
library it will fail on the line "Script::Compile(....." throwing
an "Floating-point division by zero" exception with the following callstack:
------------ CALL STACK --------------------
v8facade.dll!v8::internal::Parser::ParseBinaryExpression(int prec=10, bool
accept_IN=true, bool * ok=0x0018ef1b) Line 3240 + 0x9 bytes C++
v8facade.dll!v8::internal::Parser::ParseBinaryExpression(int prec=4, bool
accept_IN=true, bool * ok=0x0018ef1b) Line 3221 + 0x18 bytes C++
v8facade.dll!v8::internal::Parser::ParseConditionalExpression(bool
accept_IN=true, bool * ok=0x0018ef1b) Line 3188 + 0x13 bytes C++
v8facade.dll!v8::internal::Parser::ParseAssignmentExpression(bool
accept_IN=true, bool * ok=0x0018ef1b) Line 3115 + 0x11 bytes C++
v8facade.dll!v8::internal::Parser::ParseExpression(bool accept_IN=true,
bool * ok=0x0018ef1b) Line 3096 + 0x11 bytes C++
v8facade.dll!v8::internal::Parser::ParsePrimaryExpression(bool *
ok=0x0018ef1b) Line 3763 + 0xe bytes C++
v8facade.dll!v8::internal::Parser::ParseMemberWithNewPrefixesExpression(v8::internal::PositionStack
*
stack=0x00000000, bool * ok=0x0018ef1b) Line 3571 + 0xc bytes C++
v8facade.dll!v8::internal::Parser::ParseMemberExpression(bool *
ok=0x0018ef1b) Line 3542 C++
v8facade.dll!v8::internal::Parser::ParseLeftHandSideExpression(bool *
ok=0x0018ef1b) Line 3434 + 0xc bytes C++
v8facade.dll!v8::internal::Parser::ParsePostfixExpression(bool *
ok=0x0018ef1b) Line 3395 + 0xc bytes C++
v8facade.dll!v8::internal::Parser::ParseUnaryExpression(bool *
ok=0x0018ef1b) Line 3388 C++
v8facade.dll!v8::internal::Parser::ParseBinaryExpression(int prec=6, bool
accept_IN=true, bool * ok=0x0018ef1b) Line 3215 + 0xc bytes C++
v8facade.dll!v8::internal::Parser::ParseBinaryExpression(int prec=4, bool
accept_IN=true, bool * ok=0x0018ef1b) Line 3221 + 0x18 bytes C++
v8facade.dll!v8::internal::Parser::ParseConditionalExpression(bool
accept_IN=true, bool * ok=0x0018ef1b) Line 3188 + 0x13 bytes C++
v8facade.dll!v8::internal::Parser::ParseAssignmentExpression(bool
accept_IN=true, bool * ok=0x0018ef1b) Line 3115 + 0x11 bytes C++
v8facade.dll!v8::internal::Parser::ParseExpression(bool accept_IN=true,
bool * ok=0x0018ef1b) Line 3096 + 0x11 bytes C++
v8facade.dll!v8::internal::Parser::ParsePrimaryExpression(bool *
ok=0x0018ef1b) Line 3763 + 0xe bytes C++
v8facade.dll!v8::internal::Parser::ParseMemberWithNewPrefixesExpression(v8::internal::PositionStack
*
stack=0x00000000, bool * ok=0x0018ef1b) Line 3571 + 0xc bytes C++
v8facade.dll!v8::internal::Parser::ParseMemberExpression(bool *
ok=0x0018ef1b) Line 3542 C++
v8facade.dll!v8::internal::Parser::ParseLeftHandSideExpression(bool *
ok=0x0018ef1b) Line 3434 + 0xc bytes C++
v8facade.dll!v8::internal::Parser::ParsePostfixExpression(bool *
ok=0x0018ef1b) Line 3395 + 0xc bytes C++
v8facade.dll!v8::internal::Parser::ParseUnaryExpression(bool *
ok=0x0018ef1b) Line 3388 C++
v8facade.dll!v8::internal::Parser::ParseBinaryExpression(int prec=5, bool
accept_IN=true, bool * ok=0x0018ef1b) Line 3215 + 0xc bytes C++
v8facade.dll!v8::internal::Parser::ParseBinaryExpression(int prec=4, bool
accept_IN=true, bool * ok=0x0018ef1b) Line 3221 + 0x18 bytes C++
v8facade.dll!v8::internal::Parser::ParseConditionalExpression(bool
accept_IN=true, bool * ok=0x0018ef1b) Line 3188 + 0x13 bytes C++
v8facade.dll!v8::internal::Parser::ParseAssignmentExpression(bool
accept_IN=true, bool * ok=0x0018ef1b) Line 3115 + 0x11 bytes C++
v8facade.dll!v8::internal::Parser::ParseExpression(bool accept_IN=true,
bool * ok=0x0018ef1b) Line 3096 + 0x11 bytes C++
v8facade.dll!v8::internal::Parser::ParsePrimaryExpression(bool *
ok=0x0018ef1b) Line 3763 + 0xe bytes C++
v8facade.dll!v8::internal::Parser::ParseMemberWithNewPrefixesExpression(v8::internal::PositionStack
*
stack=0x00000000, bool * ok=0x0018ef1b) Line 3571 + 0xc bytes C++
v8facade.dll!v8::internal::Parser::ParseMemberExpression(bool *
ok=0x0018ef1b) Line 3542 C++
v8facade.dll!v8::internal::Parser::ParseLeftHandSideExpression(bool *
ok=0x0018ef1b) Line 3434 + 0xc bytes C++
v8facade.dll!v8::internal::Parser::ParsePostfixExpression(bool *
ok=0x0018ef1b) Line 3395 + 0xc bytes C++
v8facade.dll!v8::internal::Parser::ParseUnaryExpression(bool *
ok=0x0018ef1b) Line 3388 C++
v8facade.dll!v8::internal::Parser::ParseUnaryExpression(bool *
ok=0x0018ef1b) Line 3323 + 0xc bytes C++
v8facade.dll!v8::internal::Parser::ParseBinaryExpression(int prec=4, bool
accept_IN=true, bool * ok=0x0018ef1b) Line 3215 + 0xc bytes C++
v8facade.dll!v8::internal::Parser::ParseConditionalExpression(bool
accept_IN=true, bool * ok=0x0018ef1b) Line 3188 + 0x13 bytes C++
v8facade.dll!v8::internal::Parser::ParseAssignmentExpression(bool
accept_IN=true, bool * ok=0x0018ef1b) Line 3115 + 0x11 bytes C++
v8facade.dll!v8::internal::Parser::ParseExpression(bool accept_IN=true,
bool * ok=0x0018ef1b) Line 3096 + 0x11 bytes C++
v8facade.dll!v8::internal::Parser::ParseIfStatement(v8::internal::ZoneList<v8::internal::Handle<v8::internal::String>
* labels=0x00000000, bool * ok=0x0018ef1b) Line 2518 + 0xe bytes C++
v8facade.dll!v8::internal::Parser::ParseStatement(v8::internal::ZoneList<v8::internal::Handle<v8::internal::String>
* labels=0x00000000, bool * ok=0x0018ef1b) Line 1674 + 0x10 bytes C++
v8facade.dll!v8::internal::Parser::ParseModuleElement(v8::internal::ZoneList<v8::internal::Handle<v8::internal::String>
* labels=0x00000000, bool * ok=0x0018ef1b) Line 1254 + 0x10 bytes C++
v8facade.dll!v8::internal::Parser::ParseSourceElements(v8::internal::ZoneList<v8::internal::Statement
*>
* processor=0x046c7054, int end_token=6, bool is_eval=false, bool *
ok=0x0018ef1b) Line 1160 + 0x11 bytes C++
v8facade.dll!v8::internal::Parser::ParseFunctionLiteral(v8::internal::Handle<v8::internal::String>
function_name={...},
bool name_is_strict_reserved=false, int
function_token_position=36445, v8::internal::FunctionLiteral::Type
type=DECLARATION, bool * ok=0x0018ef1b) Line 4670 + 0x17 bytes C++
v8facade.dll!v8::internal::Parser::ParseFunctionDeclaration(v8::internal::ZoneList<v8::internal::Handle<v8::internal::String>
* names=0x00000000, bool * ok=0x0018ef1b) Line 2009 + 0x1b bytes C++
v8facade.dll!v8::internal::Parser::ParseModuleElement(v8::internal::ZoneList<v8::internal::Handle<v8::internal::String>
* labels=0x00000000, bool * ok=0x0018ef1b) Line 1245 + 0xe bytes C++
v8facade.dll!v8::internal::Parser::ParseSourceElements(v8::internal::ZoneList<v8::internal::Statement
*>
* processor=0x046572bc, int end_token=0, bool is_eval=false, bool *
ok=0x0018ef1b) Line 1160 + 0x11 bytes C++
v8facade.dll!v8::internal::Parser::DoParseProgram(v8::internal::CompilationInfo
*
info=0x0018f720, v8::internal::Handle<v8::internal::String> source={...},
v8::internal::ZoneScope * zone_scope=0x0018f3f4) Line 646 C++
v8facade.dll!v8::internal::Parser::ParseProgram() Line 590 + 0x1f bytes
C++
v8facade.dll!v8::internal::ParserApi::Parse(v8::internal::CompilationInfo *
info=0x0018f720, int parsing_flags=12) Line 6106 + 0xb bytes C++
v8facade.dll!v8::internal::MakeFunctionInfo(v8::internal::CompilationInfo *
info=0x0018f720) Line 467 + 0xd bytes C++
v8facade.dll!v8::internal::Compiler::Compile(v8::internal::Handle<v8::internal::String>
source={...},
v8::internal::Handle<v8::internal::Object> script_name={...},
int line_offset=0, int column_offset=0,
v8::internal::Handle<v8::internal::Context> context={...}, v8::Extension *
extension=0x00000000, v8::internal::ScriptDataImpl * pre_data=0x00000000,
v8::internal::Handle<v8::internal::Object> script_data={...},
v8::internal::NativesFlag natives=NATIVES_CODE) Line 604 + 0x13 bytes C++
v8facade.dll!v8::internal::Debug::CompileDebuggerScript(int index=1) Line
758 + 0x3a bytes C++
v8facade.dll!v8::internal::Debug::Load() Line 845 + 0x13 bytes C++
v8facade.dll!v8::internal::EnterDebugger::EnterDebugger() Line 3412 + 0x8
bytes C++
v8facade.dll!v8::internal::Debugger::OnBeforeCompile(v8::internal::Handle<v8::internal::Script>
script={...})
Line 2738 C++
v8facade.dll!v8::internal::MakeFunctionInfo(v8::internal::CompilationInfo *
info=0x0018fb9c) Line 461 C++
v8facade.dll!v8::internal::Compiler::Compile(v8::internal::Handle<v8::internal::String>
source={...},
v8::internal::Handle<v8::internal::Object> script_name={...},
int line_offset=0, int column_offset=0,
v8::internal::Handle<v8::internal::Context> context={...}, v8::Extension *
extension=0x00000000, v8::internal::ScriptDataImpl * pre_data=0x00000000,
v8::internal::Handle<v8::internal::Object> script_data={...},
v8::internal::NativesFlag natives=NOT_NATIVES_CODE) Line 604 + 0x13 bytes
C++
v8facade.dll!v8::Script::New(v8::Handle<v8::String> source={...},
v8::ScriptOrigin * origin=0x00000000, v8::ScriptData * pre_data=0x00000000,
v8::Handle<v8::String> script_data={...}) Line 1544 + 0x51 bytes C++
v8facade.dll!v8::Script::Compile(v8::Handle<v8::String> source={...},
v8::ScriptOrigin * origin=0x00000000, v8::ScriptData * pre_data=0x00000000,
v8::Handle<v8::String> script_data={...}) Line 1569 + 0x19 bytes C++
v8facade.dll!V8FacadeMakeInnerTests() Line 2606 + 0x43 bytes C++
Project1.exe!0051765c()
------------------------------------------------------- end of CALLSTACK
--------------
Removing the line "Debug::EnableAgent("sometest", 9696, true);" or calling
with the last parameter set to false, it works.
I am building the DLL with the Snapshot feature. If built without the
Snapshot feature, nothing works, no script compiles even without the
javascript-debug.
I am using Visual Studio 2008 express
Apparently the fail occurs during the runtime-build of some inner
javascript code that supports debug feature.
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