Re: libpq: make PGresult* "const" in PQcmdStatus()/PQcmdTuples()? - Mailing list pgsql-interfaces

Jeroen Vermeulen <jtvjtv@gmail.com> writes:
> Any objections to changing these two libpq functions' PGresult* parameters
> to be const?

> So "char * PQcmdStatus(PGresult *)" would become "char *PQcmdStatus(const
> PGresult *)", and "char *PQcmdTuples(PGresult *)" would become "char
> *PQcmdTuples(const PGresult *)".

Both of those return pointers to res->cmdStatus, so it would not make
any sense to const-ify the argument unless you also const-ify the
result; which would cause compiler warnings for users.  I'm pretty
sure we've explicitly rejected making this change for that reason.

                        regards, tom lane