Bruce Momjian <pgman@candle.pha.pa.us> writes:

Bruce Momjian <pgman@candle.pha.pa.us> writes:
> OK, add #include <stdio.h> to the file.  That should fix it.

Seems unlikely, since libpq-fe.h already includes <stdio.h>.

The real problem here is that the code is wrong: it's passing NULL
to an int parameter.

                        regards, tom lane