Re: pl/python do not delete function arguments

On 09/02/11 04:52, Hitoshi Harada wrote:
> 2010/12/31 Jan Urbański <wulczer@wulczer.org>:
>> (continuing the flurry of patches)
>>
>> Here's a patch that stops PL/Python from removing the function's
>> arguments from its globals dict after calling it. It's
>> an incremental patch on top of the plpython-refactor patch sent in
>> http://archives.postgresql.org/message-id/4D135170.3080705@wulczer.org.
>>
>> Git branch for this patch:
>> https://github.com/wulczer/postgres/tree/dont-remove-arguments
>>
>> Apart from being useless, as the whole dict is unreffed and thus freed
>> in PLy_procedure_delete, removing args actively breaks things for
>> recursive invocation of the same function. The recursive callee after
>> returning will remove the args from globals, and subsequent access to
>> the arguments in the caller will cause a NameError (see new regression
>> test in patch).
> 
> I've reviewed this. The patch is old enough to be rejected by patch
> command, but I manged to apply it by hand.
> It compiles clean. Added tests pass.
> I created fibonacci function similar to recursion_test in the patch
> and confirmed the recursion raises error on 9.0 but not on 9.1.
> Doc is not with the patch since this change is to remove unnecessary
> optimization internally.
> 
> "Ready for Committer"

Thanks,

patch merged with HEAD attached.

Jan