Re: gethostbyname2.c / 6476b8135760659b25c93ff9308425ca98a9e777 breaking asterisk 13 compatibility

[Pirmin Walthert <pirmin.walthert@wwcom.ch>]

(has not been initialized)

Am Donnerstag, den 24.08.2017, 13:39 +0200 schrieb Pirmin Walthert:
> Hello
> 
> First thing: http://git.musl-libc.org/cgit/musl/commit/?id=6476b81357
> 60
> 659b25c93ff9308425ca98a9e777 seems to break Asterisk compatibilty.
> Asterisk crashes on every startup while loading modules. Using musl-
> git 
> combined with the latest dynlink.c version before this commit works
> fine. (1.1.16 has some startup crashes as well because of the bug
> fixed
> with 27b3fd68f67b674440d21ea7ca5cf918d2e1559f).
> 
> Second: I'm currently debugging a strange memory corruption problem
> and
> have just had a look at the gethostbyname2.c code:
> 
> I was wondering: why is it safe to do free(h) on the initial run when
> *h has not been 
> 
>         static struct hostent *h;
>         size_t size = 63;
>         struct hostent *res;
>         int err;
>         do {
>                 free(h);
> 
> Best regards,
> 
> Pirmin