On 2017-08-02 11:19:39 +1200, Gavin Flower wrote: > Returning zero to indicate success is a holdover to the time computers could > only run one program at a time. At the end of the code there was a jump > table of 4 byte entries. The first entry with a displacement of zero was > the location to jump to for a normal exit, subsequent entries where for > various error conditions. This why often return codes where in positive > multiples of 4, since we don't use jump tables now - more & more people are > using any integers they want. > > So apart from convention, returning zero is no longer held to be a sacred to > indicate something exited okay. In fact since, zero could simply mean a > value was not explicitly assigned, hence it is actually a very dangerous > value to be used to indicate success!
This has nothing to do with this thread. - Andres -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
