[HACKERS] time stops within transaction

[Alex Pilosov]

I just ran into a strangest thing: within transaction, select now() will
always return time when transaction started. Same happens with select
'now'::timestamp.

This is with 7.0. I have not tested it with CVS.

I am not sure what causes this. I assume that result of now() is cached by
fmgr. Is there a way to declare functions 'not-cacheable-ever'? If there
is, such should be applied to now().

-alex