Comment #10 on issue 4211 by [email protected]: Wrong precedence for arrow
function without parameters
https://code.google.com/p/v8/issues/detail?id=4211
With the current Git HEAD things are a bit worse than expected, while
trying to figure out all of them to write them down in an unit test, I have
found some corner cases that cause a crash, in particular:
()()=>foo -> correctly throws SyntaxError
(a)()=>foo -> crash
()(a)=>foo -> correctly throws SyntaxError
(a)(b)=>foo -> crash
We will be making sure that these also throw SyntaxError, and that crashes
do not happen anymore.
FWIW, in both of the crashes above, the stack trace is as follows:
./out/x64.debug/d8 --harmony-arrow-functions -e '(a)(b)=>bar'
#
# Fatal error in .././src/parser.h, line 1316
# Check failed: parser_->allow_harmony_destructuring() || is_simple.
#
==== C stack trace ===============================
1: V8_Fatal
2:
v8::internal::ParserTraits::DeclareFormalParameter(v8::internal::ParserFormalParameters*,
v8::internal::Expression*, bool, v8::internal::ExpressionClassifier*)
3:
v8::internal::ParserTraits::ParseArrowFunctionFormalParameters(v8::internal::ParserFormalParameters*,
v8::internal::Expression*, v8::internal::Scanner::Location const&,
v8::internal::Scanner::Location*, bool*)
4:
v8::internal::ParserBase<v8::internal::ParserTraits>::ParseAssignmentExpression(bool,
v8::internal::ExpressionClassifier*, bool*)
5:
v8::internal::Parser::ParseVariableDeclarations(v8::internal::ParserBase<v8::internal::ParserTraits>::VariableDeclarationContext,
v8::internal::Parser::DeclarationParsingResult*, bool*)
6:
v8::internal::Parser::ParseVariableStatement(v8::internal::ParserBase<v8::internal::ParserTraits>::VariableDeclarationContext,
v8::internal::ZoneList<v8::internal::AstRawString const*>*, bool*)
7: v8::internal::Parser::ParseStatementListItem(bool*)
8:
v8::internal::Parser::ParseStatementList(v8::internal::ZoneList<v8::internal::Statement*>*,
int, bool*)
9: v8::internal::Parser::DoParseProgram(v8::internal::ParseInfo*)
10: v8::internal::Parser::ParseProgram(v8::internal::Isolate*,
v8::internal::ParseInfo*)
11: v8::internal::Parser::Parse(v8::internal::ParseInfo*)
12: v8::internal::Parser::ParseStatic(v8::internal::ParseInfo*)
13: 0xbb02a4
14:
v8::internal::Compiler::CompileScript(v8::internal::Handle<v8::internal::String>,
v8::internal::Handle<v8::internal::Object>, int, int,
v8::ScriptOriginOptions, v8::internal::Handle<v8::internal::Object>,
v8::internal::Handle<v8::internal::Context>, v8::Extension*,
v8::internal::ScriptData**, v8::ScriptCompiler::CompileOptions,
v8::internal::NativesFlag, bool)
15: v8::ScriptCompiler::CompileUnboundInternal(v8::Isolate*,
v8::ScriptCompiler::Source*, v8::ScriptCompiler::CompileOptions, bool)
16: v8::ScriptCompiler::Compile(v8::Local<v8::Context>,
v8::ScriptCompiler::Source*, v8::ScriptCompiler::CompileOptions)
17: v8::Shell::CompileString(v8::Isolate*, v8::Local<v8::String>,
v8::Local<v8::Value>, v8::ScriptCompiler::CompileOptions,
v8::Shell::SourceType)
18: v8::Shell::ExecuteString(v8::Isolate*, v8::Local<v8::String>,
v8::Local<v8::Value>, bool, bool, v8::Shell::SourceType)
19: v8::SourceGroup::Execute(v8::Isolate*)
20: v8::Shell::RunMain(v8::Isolate*, int, char**)
21: v8::Shell::Main(int, char**)
22: main
23: __libc_start_main
24: _start
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