Home > Archive > PostgreSQL Discussion > May 2005 > Re: C++-Language Function/Process List









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Author Re: C++-Language Function/Process List
Douglas McNaught

2005-05-23, 11:23 am

Kelly Burkhart < kelly@tradebotsystem
s.com> writes:

> I used C++ and noticed that some Postgres headers contain C++ keywords.
> Is there any interest among PG developers in making the C-language
> interface C++ clean? Or, is there hostility to this idea?


Postgres is written in C. AIUI it's somewhat dangerous to link C++
functions into the backend, since PG doesn't know how to cope with
thrown exceptions and the like.

-Doug

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Tom Lane

2005-05-23, 11:23 am

Douglas McNaught <doug@mcnaught.org> writes:
> Kelly Burkhart < kelly@tradebotsystem
s.com> writes:
[color=darkred]
> Postgres is written in C. AIUI it's somewhat dangerous to link C++
> functions into the backend, since PG doesn't know how to cope with
> thrown exceptions and the like.


However, as long as you avoid constructs like throw that require C++
library support, you can in principle use C++ as "a better C". (Now
that we have PG_TRY it might even be interesting to see if that could
be integrated with C++ throw ...)

Avoiding C++ keywords has been discussed before, and my recollection is
that we decided the changes would be more invasive than the value would
justify. But that was a long time ago and the situation may have
changed. I'd suggest spending enough time to work up a rough list of
what would need to be changed, and putting it up for discussion in the
-hackers list.

regards, tom lane

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