Tom Lane wrote:
Andrew Dunstan <[EMAIL PROTECTED]> writes:
The attached tiny patch will fix the problem Greg Sabino Mullane had
with a shared lexical $_TD, by making it a global and just pushing a
local value in the trigger function.
...
I don't think a docs change is needed.
Are you sure this doesn't cause any user-visible semantics change
(ie, something that might break someone's code)?
I think it should be mentioned in the release notes.
I would be fairly stretched to come up with an example that it breaks.
Essentially it's a way around the sharing violation that Greg got from
using $_TD in a nested subroutine. All we are doing is moving $_TD from
the local namespace to the global namespace. It still gets a per
trigger-call value (that's what the "local $_TD = $_[0];" does) and that
will work correctly even under recursive calls, so I think it's fairly safe.
Maybe it is worth putting somethng in the plperl Trigger docs about the
nature of the beast. I will do that if you like.
cheers
andrew
---------------------------(end of broadcast)---------------------------
TIP 2: Don't 'kill -9' the postmaster
