Index: qtwebengine-everywhere-src-5.11.0-rc/src/3rdparty/chromium/third_party/protobuf/src/google/protobuf/compiler/js/js_generator.cc
===================================================================
--- qtwebengine-everywhere-src-5.11.0-rc.orig/src/3rdparty/chromium/third_party/protobuf/src/google/protobuf/compiler/js/js_generator.cc
+++ qtwebengine-everywhere-src-5.11.0-rc/src/3rdparty/chromium/third_party/protobuf/src/google/protobuf/compiler/js/js_generator.cc
@@ -505,6 +505,7 @@ string JSByteGetterSuffix(BytesMode byte
       return "U8";
     default:
       assert(false);
+      __builtin_unreachable ();
   }
   return "";
 }