Re: Coping with 'C' vs 'newC' function language names - Mailing list pgsql-hackers

From Jan Wieck
Subject Re: Coping with 'C' vs 'newC' function language names
Date
Msg-id 200011151109.GAA01605@jupiter.jw.home
Whole thread Raw
In response to Re: Coping with 'C' vs 'newC' function language names  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: Coping with 'C' vs 'newC' function language names
Re: Coping with 'C' vs 'newC' function language names
List pgsql-hackers
Tom Lane wrote:
>
> More to the point, I think we have to assume old-style interface if we
> see ... LANGUAGE 'C' with no other decoration, because any other
> assumption is guaranteed to break all existing user-defined functions.
   Just  successfully  loading  an  old-style C function doesn't   guarantee that it works anyway. I pointed out before
thatthe   changes  due  to  TOAST  require  each  function  that  takes   arguments of varlen types to  expect  toasted
values.  Worst   case a dump might reload and anything works fine, but a month   later the first toasted value appears
and the  old-style  C   function corrupts the data without a single warning.
 
   We need to WARN, WARN and explicitly WARN users of selfmade C   functions about this in any possible place!


Jan

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