On Sun, Feb 2, 2014 at 6:33 AM, Tom Lane <t...@sss.pgh.pa.us> wrote:
> I happened to notice today that the owner of buildfarm member narwhal
> is trying to revive it after a long time offline, but it's failing in
> the 9.3 branch (and not attempting to build HEAD, yet).  The cause
> appears to be that contrib/postgres_fdw is referencing the DateStyle
> and IntervalStyle variables, which aren't marked PGDLLIMPORT.
> Hm, well, that would be an easy change ... but that code was committed
> last March.  How is it that we didn't notice this long ago?
> What this seems to indicate is that narwhal is the only buildfarm
> animal that has a need for PGDLLIMPORT marks on global variables that
> are referenced by extensions.

I have tried to debug the part of code where we are using DateStyle and
IntervalStyle variables in postgres_fdw on my m/c
(Win 7 - 64 bit, MSVC2010) and found that there value is junk, to me the
problem looks exactly similar to what we have seen for test_shm_mq
modules few days back. I am not sure why it is passing on other
buildfarm m/c, but I think we need to put PGDLLIMPORT for global
variables we want to use in extensions.
Also as per below link, it seems that PGDLLIMPORT is required for
exported global variables.

With Regards,
Amit Kapila.
EnterpriseDB: http://www.enterprisedb.com

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