Re: [HACKERS] Coping with 'C' vs 'newC' function language names

[Jan Wieck]

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 that the
    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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