| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Stephen Frost <sfrost(at)snowman(dot)net> |
| Cc: | Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com>, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, David Steele <david(at)pgmasters(dot)net>, Joe Conway <mail(at)joeconway(dot)com>, Magnus Hagander <magnus(at)hagander(dot)net>, Michael Paquier <michael(at)paquier(dot)xyz>, Nico Williams <nico(at)cryptonector(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>, Robbie Harwood <rharwood(at)redhat(dot)com> |
| Subject: | Re: [PATCH v20] GSSAPI encryption support |
| Date: | 2019-04-04 15:16:43 |
| Message-ID: | 7566.1554391003@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Stephen Frost <sfrost(at)snowman(dot)net> writes:
> * Tom Lane (tgl(at)sss(dot)pgh(dot)pa(dot)us) wrote:
>> Well, if the caller thinks what is being passed back is an int,
>> it will do a 32-to-64-bit widening, which is almost certainly
>> going to result in a corrupted pointer.
> Oh, good point. Interesting that it still works then.
There must be something about the x86_64 ABI that allows this to
accidentally work -- maybe integers are presumed to be sign-extended
to 64 bits by callee not caller? I added some logging and verified
that pgstat.c is seeing the correct string value, so it's working
somehow.
> I've got a fix for the missing prototypes, I hadn't noticed the issue
> previously due to always building with SSL enabled as well.
Yeah, I'd just come to the conclusion that it's because I didn't
include --with-openssl, and libpq-be.h's #ifdef nest doesn't expect
that.
BTW, the kerberos test suite takes nearly 4 minutes for me, is
it supposed to be so slow?
regards, tom lane
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