FYI, decided to go with a somewhat ugly, but safe and non-API-breaking
solution for now, see
https://developer.blender.org/rB0301df40e5b6c51575d7f9013a1a28b901063829
Bastien
On 16/03/2018 15:50, Bastien Montagne wrote:
Hi devs,
So, was investigating a weird issue today found while doing some
static override tests, and ended up finding the someone, at some era
lost in the mist of times, had the genius idea of creating a sort of
infinite recursion in PointCache RNA struct (defined in
rna_object_force.c). That is, pointcache owner has a pointer to active
pointcache, and said active pointcache has a collection of all
pointcaches from owner's list (since in DNA, PointCache is actually a
linked list item).
Needless to say that this totally breaks attempt to walk in RNA data,
since you'll indefinitely dive into recursive versions of point_caches
collection items (giving RNA paths like that:
'particle_systems["feathers_big"].point_cache.point_caches[0].point_caches[0].point_caches[0].…').
Before nuking this non-sense away and sanitizing the mess, I thought
I’d ask if someone remembers any good reason for current RNA
code/layout there… Since changing that will introduce RNA API breakage
(though point_cache does not seems to be used by any addon in our
repositories currently), would also probably only do it in 2.8 branch?
Cheers,
Bastien
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