Created attachment 464483 [details] Proposed patch that fixes the issue Errors in two files: ----------- In file included from /home/build/WebKit/WebKitBuild/Release/WebCore/DerivedSources/unified-sources/UnifiedSource-cbdfe323-29.cpp:4: /home/build/WebKit/Source/WebCore/Modules/mediastream/libwebrtc/LibWebRTCUtils.cpp: In function ‘std::optional<WebCore::RTCErrorDetailType> WebCore::toRTCErrorDetailType(webrtc::RTCErrorDetailType)’: /home/build/WebKit/Source/WebCore/Modules/mediastream/libwebrtc/LibWebRTCUtils.cpp:449:1: error: control reaches end of non-void function [-Werror=return-type] 449 | } | ^ cc1plus: all warnings being treated as errors [5700/9138] Building CXX object Source/WebCore/CMakeFiles/WebCore.dir/__/__/WebCore/DerivedSources/unified-sources/UnifiedSource-68aea4ac-20.cpp.o ninja: build stopped: subcommand failed. ----------- ----------- /home/build/WebKit/Source/WebCore/testing/MockLibWebRTCPeerConnection.cpp: In member function ‘virtual webrtc::PeerConnectionInterface::SignalingState WebCore::MockLibWebRTCPeerConnection::signaling_state()’: /home/build/WebKit/Source/WebCore/testing/MockLibWebRTCPeerConnection.cpp:278:1: error: control reaches end of non-void function [-Werror=return-type] 278 | } | ^ ----------- This happens at least since commit 9def6e6f0258ddd9171d32bec2fffb684dbc7b8b until current tip (2c3591d6db31967955f974e615d986177db22774). The attached patch solves the compilation problem, I tried to put "default" to what it makes more sense to me, although in a way "default" should not be needed because the "case" options cover all possible values, AFAICT. The version of the compiler that I am using is: gcc (Debian 12.2.0-13) 12.2.0