It looks like after the changes in https://trac.webkit.org/changeset/285418/webkit there are not 770 tests failing for Catalina and Monterey JSC test queues. It looks like all of these failures are in the stress directory. I have not tried to reproduce this locally yet. Build: https://build.webkit.org/#/builders/17/builds/1376 build history: https://build.webkit.org/#/builders/Apple-Catalina-Debug-JSC-Tests?numbuilds=50
<rdar://problem/85207048>
ERROR: Unchecked JS exception: This scope can throw a JS exception: intlStringOrBooleanOption @ /Volumes/Data/worker/catalina-debug/build/Source/JavaScriptCore/runtime/IntlObjectInlines.h:162 (ExceptionScope::m_recursionDepth was 8) But the exception was unchecked as of this scope: intlOption @ /Volumes/Data/worker/catalina-debug/build/Source/JavaScriptCore/runtime/IntlObjectInlines.h:131 (ExceptionScope::m_recursionDepth was 8) Unchecked exception detected at: 1 0x10ba50bee JSC::VM::verifyExceptionCheckNeedIsSatisfied(unsigned int, JSC::ExceptionEventLocation&) 2 0x10ba2b10c JSC::ThrowScope::ThrowScope(JSC::VM&, JSC::ExceptionEventLocation) 3 0x10ba287f3 JSC::ThrowScope::ThrowScope(JSC::VM&, JSC::ExceptionEventLocation) 4 0x10a1080e9 JSC::IntlNumberFormat::SignDisplay JSC::intlOption<JSC::IntlNumberFormat::SignDisplay>(JSC::JSGlobalObject*, JSC::JSObject*, JSC::PropertyName, std::initializer_list<std::__1::pair<WTF::ASCIILiteral, JSC::IntlNumberFormat::SignDisplay> >, WTF::ASCIILiteral, JSC::IntlNumberFormat::SignDisplay) 5 0x10a1025c5 JSC::IntlNumberFormat::initializeNumberFormat(JSC::JSGlobalObject*, JSC::JSValue, JSC::JSValue) 6 0x10b8e531a JSC::numberProtoFuncToLocaleString(JSC::JSGlobalObject*, JSC::CallFrame*) 7 0x10a1245bc vmEntryToNative 8 0x10b110fc6 JSC::Interpreter::executeCall(JSC::JSGlobalObject*, JSC::JSObject*, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&) 9 0x10b51ff7d JSC::call(JSC::JSGlobalObject*, JSC::JSValue, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&) 10 0x10b4b56bf JSC::arrayProtoFuncToLocaleString(JSC::JSGlobalObject*, JSC::CallFrame*) 11 0x39d290a01178 12 0x10a148255 llint_entry 13 0x10a1243d0 vmEntryToJavaScript 14 0x10b1107ab JSC::JITCode::execute(JSC::VM*, JSC::ProtoCallFrame*) 15 0x10b10fd51 JSC::Interpreter::executeProgram(JSC::SourceCode const&, JSC::JSGlobalObject*, JSC::JSObject*) 16 0x10b5978d7 JSC::evaluate(JSC::JSGlobalObject*, JSC::SourceCode const&, JSC::JSValue, WTF::NakedPtr<JSC::Exception>&) 17 0x101eb2cf1 runWithOptions(GlobalObject*, CommandLine&, bool&) 18 0x101e66db8 jscmain(int, char**)::$_8::operator()(JSC::VM&, GlobalObject*, bool&) const 19 0x101e385ec int runJSC<jscmain(int, char**)::$_8>(CommandLine const&, bool, jscmain(int, char**)::$_8 const&) 20 0x101e35dae jscmain(int, char**) 21 0x101e35af3 main 22 0x7fff71799cc9 start 23 0x17
Probably fixed by https://trac.webkit.org/changeset/285506/webkit