st 17. 3. 2021 v 23:32 odesílatel Michael Paquier <michael@paquier.xyz> napsal:
On Wed, Mar 17, 2021 at 05:04:48PM +0100, Pavel Stehule wrote: > This tree has a different direction than is usual, and then replacing the > root node is not simple.
Yeah, it is not like we should redesign this whole part just for the feature discussed here, and that may impact performance as the current list handling is cheap now.
> Second solution (significantly more simple) is an additional pointer in > ns_item structure. In almost all cases this pointer will not be used. > Because ns_item uses a flexible array, then union cannot be used. I > implemented this in a patch marked as "alias-implementation". > > What do you think about it?
I am not sure that it is necessary nor good to replace entirely the root label. So associating a new field directly into it sounds like a promising approach?
Here is rebased patch
I am continuing to talk with Hannu about syntax. I think so using the compile option is a good direction, but maybe renaming from "routine_label" to "topscope_label" (proposed by Hannu) or maybe "outerscope_label" can be a good idea.