Function STDEXEC_CATCH

test/stdexec/algos/adaptors/test_let_error.cpp:109–112

        std::rethrow_exception(eptr);
      }
      STDEXEC_CATCH(std::exception const & e)
      {
        return ex::just(std::string{e.what()});
      }
    STDEXEC_CATCH_FALLTHROUGH
                          });
    wait_for_value(std::move(snd), std::string{"error description"});