Seeing the following crash with webrtc/missing-exception-checks-RTCPeerConnection-generateCertificate.html on iOS and macOS debug WK2 bots: (stun_port.cc:450): Port[47029c00:0:1:0:local:Net[any:::/0:Wildcard:id=0]]: StunPort: stun host lookup received error 0 ERROR: Unchecked JS exception: This scope can throw a JS exception: reject @ ./bindings/js/JSDOMPromiseDeferred.cpp:145 (ExceptionScope::m_recursionDepth was 5) But the exception was unchecked as of this scope: jsRTCPeerConnectionConstructorFunctionGenerateCertificateBody @ /Volumes/Data/slave/catalina-debug/build/WebKitBuild/Debug/DerivedSources/WebCore/JSRTCPeerConnection.cpp:1050 (ExceptionScope::m_recursionDepth was 4) Unchecked exception detected at: 1 0x6ce35878e JSC::VM::verifyExceptionCheckNeedIsSatisfied(unsigned int, JSC::ExceptionEventLocation&) 2 0x6ce33326f JSC::ThrowScope::~ThrowScope() 3 0x6ce32e405 JSC::ThrowScope::~ThrowScope() 4 0x6aedb5c29 WebCore::jsRTCPeerConnectionConstructorFunctionGenerateCertificateBody(JSC::JSGlobalObject*, JSC::CallFrame*, WTF::Ref<WebCore::DeferredPromise, WTF::DumbPtrTraits<WebCore::DeferredPromise> >&&) 5 0x6aedb59c4 long long WebCore::IDLOperationReturningPromise<WebCore::JSRTCPeerConnection>::callStatic<&(WebCore::jsRTCPeerConnectionConstructorFunctionGenerateCertificateBody(JSC::JSGlobalObject*, JSC::CallFrame*, WTF::Ref<WebCore::DeferredPromise, WTF::DumbPtrTraits<WebCore::DeferredPromise> >&&)), (WebCore::CastedThisErrorBehavior)2>(JSC::JSGlobalObject&, JSC::CallFrame&, char const*)::'lambda'(JSC::JSGlobalObject&, JSC::CallFrame&, WTF::Ref<WebCore::DeferredPromise, WTF::DumbPtrTraits<WebCore::DeferredPromise> >&&)::operator()(JSC::JSGlobalObject&, JSC::CallFrame&, WTF::Ref<WebCore::DeferredPromise, WTF::DumbPtrTraits<WebCore::DeferredPromise> >&&) const 6 0x6aedb58cb JSC::JSValue WebCore::callPromiseFunction<long long WebCore::IDLOperationReturningPromise<WebCore::JSRTCPeerConnection>::callStatic<&(WebCore::jsRTCPeerConnectionConstructorFunctionGenerateCertificateBody(JSC::JSGlobalObject*, JSC::CallFrame*, WTF::Ref<WebCore::DeferredPromise, WTF::DumbPtrTraits<WebCore::DeferredPromise> >&&)), (WebCore::CastedThisErrorBehavior)2>(JSC::JSGlobalObject&, JSC::CallFrame&, char const*)::'lambda'(JSC::JSGlobalObject&, JSC::CallFrame&, WTF::Ref<WebCore::DeferredPromise, WTF::DumbPtrTraits<WebCore::DeferredPromise> >&&)>(JSC::JSGlobalObject&, JSC::CallFrame&, &(WebCore::jsRTCPeerConnectionConstructorFunctionGenerateCertificateBody(JSC::JSGlobalObject*, JSC::CallFrame*, WTF::Ref<WebCore::DeferredPromise, WTF::DumbPtrTraits<WebCore::DeferredPromise> >&&))) 7 0x6aed06751 long long WebCore::IDLOperationReturningPromise<WebCore::JSRTCPeerConnection>::callStatic<&(WebCore::jsRTCPeerConnectionConstructorFunctionGenerateCertificateBody(JSC::JSGlobalObject*, JSC::CallFrame*, WTF::Ref<WebCore::DeferredPromise, WTF::DumbPtrTraits<WebCore::DeferredPromise> >&&)), (WebCore::CastedThisErrorBehavior)2>(JSC::JSGlobalObject&, JSC::CallFrame&, char const*) 8 0x6aed06724 WebCore::jsRTCPeerConnectionConstructorFunctionGenerateCertificate(JSC::JSGlobalObject*, JSC::CallFrame*) 9 0x485f67401178 10 0x6ccd88f17 llint_entry 11 0x6ccd68943 vmEntryToJavaScript https://results.webkit.org/?suite=layout-tests&test=webrtc%2Fmissing-exception-checks-RTCPeerConnection-generateCertificate.html
<rdar://problem/66284491>
Created attachment 405478 [details] crash log Full stderr output: https://build.webkit.org/results/Apple-Catalina-Debug-WK2-Tests/r265043%20(5782)/webrtc/missing-exception-checks-RTCPeerConnection-generateCertificate-stderr.txt
*** This bug has been marked as a duplicate of bug 214924 ***