Re: [PATCH][BUG_FIX] Potential null pointer dereferencing. - Mailing list pgsql-hackers

> On 12 Nov 2019, at 14:07, Ranier Vilela <ranier_gyn@hotmail.com> wrote:

> ExecClearTuple don't check por NULL pointer arg and according
> TupIsNull slot can be NULL.

I assume you are referring to the TupIsNull(resultTupleSlot) check a few lines
down in the same loop?  If resultTupleSlot was indeed NULL and not empty, the
subsequent call to ExecCopySlot would be a NULL pointer dereference too.  I
might be missing something obvious, but in which case can resultTupleSlot be
NULL when calling ExecUnique?

cheers ./daniel