Bug 216686 – Unchecked exception detected at JSC::JSModuleNamespaceObject::defineOwnProperty

• Component: JavaScriptCore
• Status: RESOLVED FIXED

[Ryan Haddad]

** The following JSC stress test failures have been introduced:
	modules.yaml/modules/module-namespace-object-define-own-property.js.default-ftl-modules
	modules.yaml/modules/module-namespace-object-define-own-property.js.default-modules
	modules.yaml/modules/module-namespace-object-define-own-property.js.dfg-eager-modules
	modules.yaml/modules/module-namespace-object-define-own-property.js.dfg-eager-no-cjit-validate-modules
	modules.yaml/modules/module-namespace-object-define-own-property.js.ftl-eager-modules
	modules.yaml/modules/module-namespace-object-define-own-property.js.ftl-eager-no-cjit-modules
	modules.yaml/modules/module-namespace-object-define-own-property.js.ftl-no-cjit-no-inline-validate-modules
	modules.yaml/modules/module-namespace-object-define-own-property.js.ftl-no-cjit-small-pool-modules
	modules.yaml/modules/module-namespace-object-define-own-property.js.ftl-no-cjit-validate-modules
	modules.yaml/modules/module-namespace-object-define-own-property.js.no-cjit-validate-phases-modules
	modules.yaml/modules/module-namespace-object-define-own-property.js.no-llint-modules


ERROR: Unchecked JS exception:
    This scope can throw a JS exception: defineOwnNonIndexProperty @ ./runtime/JSObject.cpp:3708
        (ExceptionScope::m_recursionDepth was 8)
    But the exception was unchecked as of this scope: defineOwnProperty @ ./runtime/JSModuleNamespaceObject.cpp:242
        (ExceptionScope::m_recursionDepth was 7)

Unchecked exception detected at:
    1   0x115bacd8e JSC::VM::verifyExceptionCheckNeedIsSatisfied(unsigned int, JSC::ExceptionEventLocation&)
    2   0x115b875bf JSC::ThrowScope::~ThrowScope()
    3   0x115b82755 JSC::ThrowScope::~ThrowScope()
    4   0x1159d7d83 JSC::JSModuleNamespaceObject::defineOwnProperty(JSC::JSObject*, JSC::JSGlobalObject*, JSC::PropertyName, JSC::PropertyDescriptor const&, bool)
    5   0x115aa462b JSC::objectConstructorDefineProperty(JSC::JSGlobalObject*, JSC::CallFrame*)
    6   0x20919b401178
    7   0x114595a29 llint_entry
    8   0x114595a29 llint_entry
    9   0x114595a29 llint_entry
    10  0x114575343 vmEntryToJavaScript
    11  0x115421d9b JSC::JITCode::execute(JSC::VM*, JSC::ProtoCallFrame*)
    12  0x1154240b5 JSC::Interpreter::executeModuleProgram(JSC::ModuleProgramExecutable*, JSC::JSGlobalObject*, JSC::JSModuleEnvironment*)
    13  0x1159ea409 JSC::JSModuleRecord::evaluate(JSC::JSGlobalObject*)
    14  0x1156ff48e JSC::AbstractModuleRecord::evaluate(JSC::JSGlobalObject*)
    15  0x1159d6da5 JSC::JSModuleLoader::evaluateNonVirtual(JSC::JSGlobalObject*, JSC::JSValue, JSC::JSValue, JSC::JSValue)
    16  0x1159d6cfa JSC::JSModuleLoader::evaluate(JSC::JSGlobalObject*, JSC::JSValue, JSC::JSValue, JSC::JSValue)
    17  0x1159db89d JSC::moduleLoaderEvaluate(JSC::JSGlobalObject*, JSC::CallFrame*)
    18  0x20919b401178
    19  0x114595986 llint_entry
    20  0x114595a29 llint_entry
    21  0x114595a29 llint_entry
    22  0x114595986 llint_entry
    23  0x114595a29 llint_entry
    24  0x114595986 llint_entry
    25  0x114575343 vmEntryToJavaScript
    26  0x115421d9b JSC::JITCode::execute(JSC::VM*, JSC::ProtoCallFrame*)
    27  0x115422557 JSC::Interpreter::executeCall(JSC::JSGlobalObject*, JSC::JSObject*, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&)
    28  0x11577380d JSC::call(JSC::JSGlobalObject*, JSC::JSValue, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&)
    29  0x115773ae3 JSC::profiledCall(JSC::JSGlobalObject*, JSC::ProfilingReason, JSC::JSValue, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&)
    30  0x1159d3381 JSC::JSMicrotask::run(JSC::JSGlobalObject*)
    31  0x115bac9c3 JSC::QueuedTask::run()
    32  0x115bac851 JSC::VM::drainMicrotasks()
    33  0x10fc55a03 runWithOptions(GlobalObject*, CommandLine&, bool&)
    34  0x10fc1464a jscmain(int, char**)::$_8::operator()(JSC::VM&, GlobalObject*, bool&) const
    35  0x10fbea2be int runJSC<jscmain(int, char**)::$_8>(CommandLine const&, bool, jscmain(int, char**)::$_8 const&)
    36  0x10fbe7ee5 jscmain(int, char**)
    37  0x10fbe7c2e main
    38  0x7fff6d8eacc9 start

[Ryan Haddad]

Seeing this on the Debug JSC bot:
https://build.webkit.org/builders/Apple-Catalina-Debug-JSC-Tests/builds/1560/steps/jscore-test/logs/stdio

[Radar WebKit Bug Importer]

<rdar://problem/69157632>

[Yusuke Suzuki]

Committed r267324: <https://trac.webkit.org/changeset/267324>