Re: BUG #17158: Distinct ROW fails with Postgres 14 - Mailing list pgsql-bugs

From Tom Lane
Subject Re: BUG #17158: Distinct ROW fails with Postgres 14
Date
Msg-id 594111.1631631733@sss.pgh.pa.us
Whole thread Raw
In response to Re: BUG #17158: Distinct ROW fails with Postgres 14  (Peter Eisentraut <peter.eisentraut@enterprisedb.com>)
Responses Re: BUG #17158: Distinct ROW fails with Postgres 14
List pgsql-bugs
Peter Eisentraut <peter.eisentraut@enterprisedb.com> writes:
> On 10.09.21 21:27, Tom Lane wrote:
>> Perhaps it'd work to put the phony entry into fcinfo->flinfo->fn_mcxt
>> instead of CacheMemoryContext.

> Ok, the attached patch fixes the valgrind error.

Looks roughly sane to me.  I'm of two minds about whether you
ought to change the palloc to palloc0.  We'd have taken much
longer to notice this problem if palloc0 had been used; but
from any standpoint other than "will valgrind catch it", it
seems like zeroing the fake typcache entry would be safer.

            regards, tom lane



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