Re: libpq async duplicate error results

Hi,

On 2022-02-16 18:51:37 -0500, Tom Lane wrote:
> This seems workable, and you'll notice it fixes the duplicated text
> in the test case Andres was worried about.

Cool.

I find it mildly scary that we didn't have any other tests verifying the libpq
side of connection termination. Seems like we we maybe should add a few more?
Some simple cases we can do via isolationtester. But some others would
probably require a C test program to be robust...


> +    /* Also, do nothing if the argument is OOM_result */
> +    if (res == unconstify(PGresult *, &OOM_result))
> +        return;

Wouldn't it make more sense to make res const, rather than unconstifying
&OOM_result?


Greetings,

Andres Freund