Added to TODO:
* Fix typein/out functions to not be user-callable
> David Sauer <davids@orfinet.cz> writes:
> > david=> select textout(byteaout(odata)) from xinv18986;
> > pqReadData() -- backend closed the channel unexpectedly.
>
> I think this is not related to large objects per se --- it's a
> typechecking failure. textout is expecting a text datum, and it's
> not getting one because that's not what comes out of byteaout.
> (The proximate cause of the crash is that textout tries to interpret
> the first four bytes of byteaout's output as a varlena length...)
>
> The parser's typechecking machinery is unable to catch this
> error because textout is declared to take any parameter type
> whatever (its proargtype is 0).
>
> Why don't the type output functions have the correct input types
> declared for them in pg_proc???
>
> For that matter, why do we allow user expressions to call the type
> input/output functions at all? They're not really usable as SQL
> functions AFAICS...
>
> regards, tom lane
>
>
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