calling super() a second time in a constructor should throw
https://bugs.webkit.org/show_bug.cgi?id=151113
Reviewed by Saam Barati and Keith Miller.
Source/JavaScriptCore:
Currently, our implementation checks if 'super()' was called in a constructor more
than once and raises a RuntimeError before the second call. According to the spec
we need to raise an error just after the second super() is finished and before
the new 'this' is assigned https://esdiscuss.org/topic/duplicate-super-call-behaviour.
To implement this behavior this patch adds a new op code, op_is_empty, that is used
to check if 'this' is empty.
* bytecode/BytecodeList.json:
* bytecode/BytecodeUseDef.h:
(JSC::computeUsesForBytecodeOffset):
(JSC::computeDefsForBytecodeOffset):
* bytecode/CodeBlock.cpp:
(JSC::CodeBlock::dumpBytecode):
* bytecompiler/BytecodeGenerator.cpp:
(JSC::BytecodeGenerator::emitIsEmpty):
* bytecompiler/BytecodeGenerator.h:
* bytecompiler/NodesCodegen.cpp:
(JSC::FunctionCallValueNode::emitBytecode):
* dfg/DFGAbstractInterpreterInlines.h:
(JSC::DFG::AbstractInterpreter<AbstractStateType>::executeEffects):
* dfg/DFGByteCodeParser.cpp:
(JSC::DFG::ByteCodeParser::parseBlock):
* dfg/DFGCapabilities.cpp:
(JSC::DFG::capabilityLevel):
* dfg/DFGClobberize.h:
(JSC::DFG::clobberize):
* dfg/DFGDoesGC.cpp:
(JSC::DFG::doesGC):
* dfg/DFGFixupPhase.cpp:
(JSC::DFG::FixupPhase::fixupNode):
* dfg/DFGNodeType.h:
* dfg/DFGSafeToExecute.h:
(JSC::DFG::safeToExecute):
* dfg/DFGSpeculativeJIT32_64.cpp:
(JSC::DFG::SpeculativeJIT::compile):
* dfg/DFGSpeculativeJIT64.cpp:
(JSC::DFG::SpeculativeJIT::compile):
* ftl/FTLCapabilities.cpp:
(JSC::FTL::canCompile):
* ftl/FTLLowerDFGToB3.cpp:
(JSC::FTL::DFG::LowerDFGToB3::compileNode):
(JSC::FTL::DFG::LowerDFGToB3::compileIsEmpty):
* jit/JIT.cpp:
(JSC::JIT::privateCompileMainPass):
* jit/JIT.h:
* jit/JITOpcodes.cpp:
(JSC::JIT::emit_op_is_empty):
* jit/JITOpcodes32_64.cpp:
(JSC::JIT::emit_op_is_empty):
* llint/LowLevelInterpreter32_64.asm:
* llint/LowLevelInterpreter64.asm:
* tests/stress/class-syntax-double-constructor.js: Added.
LayoutTests:
* js/class-syntax-super-expected.txt:
* js/script-tests/class-syntax-super.js:
git-svn-id: http://svn.webkit.org/repository/webkit/trunk@200083 268f45cc-cd09-0410-ab3c-d52691b4dbfc
29 files changed
