Re: [PATCH] Don't crash if ai_canonname comes back as null

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Augie Fackler <durin42@xxxxxxxxx> writes:

> Fixes a weird bug where git-daemon was segfaulting
> when started by sh(1) because ai_canonname was null.
> ---
> Fixed based on feedback.

Hmm.

I've been waiting for feedback to a patch proposed earlier in the same
area, which is <49F5BA55.3060606@xxxxxxxxxxxxxx> ($gmane/117670).  How
does this new one relate to it?

>  daemon.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/daemon.c b/daemon.c
> index 13401f1..ae21d92 100644
> --- a/daemon.c
> +++ b/daemon.c
> @@ -459,7 +459,7 @@ static void parse_extra_args(char *extra_args, int
> buflen)
>  				inet_ntop(AF_INET, &sin_addr->sin_addr,
>  					  addrbuf, sizeof(addrbuf));
>  				free(canon_hostname);
> -				canon_hostname = xstrdup(ai->ai_canonname);
> +				canon_hostname = ai->ai_canonname ?
> xstrdup(ai->ai_canonname) : NULL;
>  				free(ip_address);
>  				ip_address = xstrdup(addrbuf);
>  				break;
> --
> 1.6.2.GIT

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