Re: enhanced error fields

On 10 July 2012 21:26, Alvaro Herrera <alvherre@commandprompt.com> wrote:
>> I haven't defined Relation in elog.h; I have pre-declared it there.
>> Maybe that isn't to your taste, but there is surely something to be
>> said for adding exactly one line of code in preference to adding an
>> entire new header file, and having a bunch of existing files include
>> that new header.
>
> That is true.  I'd like to hear others' opinions.

It seems that the code, exactly as written, relies upon a GNU
extension that didn't make it into the standard until C11 - the
redefinition of a typedef. Clang warns about this. Still, it ought to
be possible, if not entirely straightforward, to use a pre-declaration
all the same.

-- 
Peter Geoghegan       http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training and Services