Function user_code

extern/catch/catch.hpp:7204–7205

template <typename Fun>
Detail::CompleteType_t<FunctionReturnType<Fun>> user_code(Fun&& fun) {
  CATCH_TRY { return Detail::complete_invoke(std::forward<Fun>(fun)); }
  CATCH_CATCH_ALL {
    getResultCapture().benchmarkFailed(translateActiveException());
    CATCH_RUNTIME_ERROR(Detail::benchmarkErrorMsg);