buf := bytes.NewBuffer(nil)
		cmd.Stdout = buf
		cmd.Stderr = buf
		if err := cmd.Start(); err != nil {
			// We are starting so many processes that on
			// some systems (problem seen on Darwin,
			// Dragonfly, OpenBSD) the fork call will fail
			// with EAGAIN.
			if pe, ok := err.(*os.PathError); ok {
				err = pe.Err
			}

					// but not as a general constant.
					// Treat this as a variable of the
					// appropriate type, not a constant,
					// to get C-style type handling,
					// avoiding the problem that C permits
					// uint64(-1) but Go does not.
					// See issue 26066.
					n.Kind = "var"
				default:
					n.Const = fmt.Sprintf("%f", floats[i])
				}
			case "sconst":
				if i < len(strs) {

Translation of parameters and the return value follows the type
translation above except that arrays passed as parameters translate
explicitly in Go to pointers to arrays, as they do (implicitly) in C.

Garbage collection is the big problem.  It is fine for the Go world to
have pointers into the C world and to free those pointers when they
are no longer needed.  To help, the Go code can define Go objects