Boszormenyi Zoltan <z...@cybertec.at> writes: > Then, why isn't memcpy() skipped if the source and dest are the same? > It would be a micro-optimization but a valid one.
No, it'd be more like a micro-pessimization, because the test would be wasted effort in the vast majority of calls. The *only* reason to do this would be to shut up valgrind, and that seems annoying. I wonder if anyone's tried filing a bug against valgrind to say that it shouldn't complain about this case. regards, tom lane -- Sent via pgsql-hackers mailing list (firstname.lastname@example.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers