Re: BUG #17561: Server crashes on executing row() with very long argument list

Alvaro Herrera <alvherre@alvh.no-ip.org> writes:
> On 2022-Jul-29, PG Bug reporting form wrote:
>> When executing the following query:
>> (echo "SELECT row("; for ((i=1;i<100001;i++)); do echo "'$i',$i,"; done;
>> echo "'0',0);"; ) | psql
>> I got server crash with the following backtrace

> Hah, of course.  I suppose we'd need something like this ... haven't
> looked for other problem spots.

I think the parser should've prevented this.  It's in charge of
rejecting overlength SELECT lists, for example.  Also, the limit
probably needs to be just MaxTupleAttributeNumber.

            regards, tom lane