Re: [HACKERS] current CVS snapshot of pgsql crash ...

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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