I wrote:
> 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.
[ digs in archives... ]
See previous discussions here:
/message-id/flat/NCBBLFLGLEIDHCJLONHNKEDGFJAA.mdklatt%40ou.edu
and here:
/message-id/flat/E1RaRtZ-0008aS-MK%40hans3
regards, tom lane