[Gretl-devel] Re: function call within loop fails
Hi Allin,
Thanks for the quick fix which works fine here on my machine.
Also, thanks, Sven, for confirming the bug.
Best
Artur
Am 26.07.23 um 18:37 schrieb Cottrell, Allin:
> On Wed, Jul 26, 2023 at 9:00 AM Artur T. <atecon(a)posteo.de> wrote:
>>
>> Hi folks,
>>
>> using latest git under Ubuntu yields a weird error with a loop. The
>> following definitely used to work in the past but fails now with an
>> "Data error".
>
> Thanks for the report, Artur. Here's a minimal script to expose the
> bug you found:
>
> <hansl>
> function void list_access (const list L)
> series dx = L.dx
> end function
>
> nulldata 10
> series dx = index
> loop i=1..3
> # fails after first iteration
> list_access(dataset)
> endloop
> </hansl>
>
> This sort of thing last worked with gretl 2022b; unfortunately it has
> been broken since 2022c. That is because (a) 2022c introduced
> compilation of "genrs" within functions that are called from a loop
> (as in this example), and (b) the internal code to handle expressions
> of the form listname.seriesname was not robust with respect to such
> compilation. In fact it was funky old ad-hocery.
>
> The problem is now fixed in git, with a proper, modern backend for
> listname.seriesname.
>
> To be clear, here's the exact scope of the bug that's now fixed:
>
> * It bites when function F uses listname.seriesname and F is called
> within a loop.
> * It does not bite if F is called repeatedly, but not in a loop.
> * It does not bite if listname.seriesname is called directly within a
> loop (not via a user function).
>
> Allin
> _______________________________________________
> Gretl-devel mailing list -- gretl-devel(a)gretlml.univpm.it
> To unsubscribe send an email to gretl-devel-leave(a)gretlml.univpm.it
> Website: https://gretlml.univpm.it/postorius/lists/gretl-devel.gretlml.univpm.it/