Re: [COMMITTERS] pgsql: Refactor flex and bison make rules

On 11/28/2012 11:03 PM, Tom Lane wrote:
> Jeremy Drake <pgbuildfarm@jdrake.com> writes:
>> While we're talking about odd issues that only seem to happen on Okapi,
>> does anyone know of anything I can do to diagnose the pg_upgrade failure
>> on the 9.2 branch?  There are no rogue (non-buildfarm-related)
>> postmaster/postgres processes running on the machine.
> [ digs around ... ]  It looks like the failure is coming from here:
>
>     if (strlen(path) >= sizeof(unp->sun_path))
>         return EAI_FAIL;
>
> What's the size of the sun_path member of struct sockaddr_un on your
> machine?  I count 115 characters in your socket path ... maybe you
> just need a less deeply nested test directory.
>
> (If that is the problem, seems like we need to return something
> more helpful than EAI_FAIL here.)
>
>             

Looks like it was. Good catch. What's the best way to fix?

Note that this problem was triggered by having a buildfarm buildroot 
path of length about 49 or 50. I'm lucky not to have triggered it 
myself. Do I need to add a check to limit the buildroot path length?

cheers

andrew