Error using Enzyme to autodiff wrt Flux neural net parameters

[mcabbott]

I can see how that g is bad.

But why is vcat(x,y) in any way uncertain? (Although this might be orthogonal to OP’s problem.)

@wsmoses

mutable and constant value store into a differentiable structure, however, presents challenges

More importantly, what does “structure” mean here? My NamedTuple examples wrap Duplicated and Const things into the same struct, but probably don’t “store” anything, it’s not an array & has no pointer. Is that always OK?