Hi devs, A reminder about this common idiom: switch (...) { case Foo: return ...; case Bar: return ...; } RELEASE_ASSERT_NOT_REACHED(); When it's intended that the code always returns inside the switch statement, the RELEASE_ASSERT_NOT_REACHED() is required to avoid tripping GCC's -Wreturn-type. If you forget it, I or somebody else will wind up adding it later to avoid the warning. Clang does not warn here, and this is the most common type of warning I clean up, so please don't forget! :) This warning is useful in other situations, and it seems nicer to placate GCC than to disable it. I'll sneak in another reminder: "return WTFMove()" is almost always not needed. Clang warns only if the move prevents return value optimization, but GCC will always warn if it detects the move is unneeded. Have a nice day, Michael