Tom Lane wrote:
Martijn van Oosterhout <kleptog@svana.org> writes:
On Thu, Mar 30, 2006 at 11:51:41AM -0700, Don Y wrote:
- Can *_in() be ever invoked with a NULL argument? Or, can I
safely assume that the pointer I am passed is valid?
You can't get a NULL there. Yes, the pointer is valid cstring.
Yes, STRICT IMMUTABLE, in my case, so not a problem.
To be sure about that, make sure you mark the function STRICT
when you define it. Otherwise you can get burnt by direct user
invocation
select int4in(null::cstring);
not to mention that we were recently considering letting non-strict
input functions get invoked on nulls in the normal course of events.
Thanks!
--don
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