Yes, I think
address ? address : "#f"
is right, while "host not found" should change to something like "host
lookup failed".
At Tue, 21 May 2013 04:57:25 +0300, Alex Moiseenko wrote:
> Hi. I've successfully started Racket 5.3.4.7 with Geiser server through JNI +
> SDL2 on Android (and this combination mostly works with small hacks), but got
> some issues due to racket's implementation. This is last one I'm trying to
> understand. What should be here instead of the "address" expression?
>
> 2349 } else {
> 2350 scheme_raise_exn(MZEXN_FAIL_NETWORK,
> 2351 "tcp-listen: host not found\n"
> 2352 " address: %s\n"
> 2353 " system error: %N",
> 2354 address, 1, err);
> 2355 return NULL;
> 2356 }
> 2357 }
> https://github.com/plt/racket/blob/master/src/racket/src/network.c#L2354
>
> It looks like there should be (but i'm not sure)
>
> address ? address : "#f" // as i see at another place, because it's
> possible to have NULL according to the:
>
> https://github.com/plt/racket/blob/master/src/racket/src/network.c#L2147
>
> Without such change I got segfault because sch_vsprintf tried to process NULL
> pointer, when i forgot to grant internet permissions for my application and
> tried to call start-geiser function (getaddrinfo returns fail in this
> situation and this `else` block is called).
>
>
>
> --
> Alex Moiseenko
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