Linking 2.24.1 - libjavascriptcoregtk-4.0.so with gcc 8.3.1 20190331 reports: /src/gnome/webkitgtk-2.24.1/Source/JavaScriptCore/runtime/VMTraps.cpp:57: warning: type ‘struct SignalContext’ violates the C++ One Definition Rule [-Wodr] struct SignalContext { /src/gnome/webkitgtk-2.24.1/Source/JavaScriptCore/tools/SigillCrashAnalyzer.cpp:179: note: a different type is defined in anoth er translation unit struct SignalContext { /src/gnome/webkitgtk-2.24.1/Source/JavaScriptCore/runtime/VMTraps.cpp:75: note: the first difference of corresponding definitio ns is field ‘registers’ PlatformRegisters& registers; /src/gnome/webkitgtk-2.24.1/Source/JavaScriptCore/tools/SigillCrashAnalyzer.cpp:184: note: a field with different name is defined in another translation unit MacroAssemblerCodePtr<PlatformRegistersPCPtrTag> machinePC;