[PCH] driver, documentation

[Neil Booth]

Geoffrey Keating wrote:-

> +      break;
> +
> +    case OPT__output_pch:
> +      pch_file = xstrdup (arg + strlen ("--output-pch="));
>        break;

See comment at the top of the file.  Here,

         pch_file = arg;

is enough; arg points to the argument, and it is permanent text.

Neil.