TalGloz <glozmantal(at)gmail(dot)com> writes:
> The error this time for PostgreSQL is:
> *ERROR: could not find function information for function "sum_of_numbers"
> HINT: SQL-callable functions need an accompanying
> PG_FUNCTION_INFO_V1(funcname).
> SQL state: 42883*
Probably need extern "C" around the PG_FUNCTION_INFO_V1 macro, too.
Both those macros produce C function definitions under the hood,
and said functions need to not be name-mangled by C++.
regards, tom lane