Enzyme strange output for hessian

General Usage
,
1

Hello, I get for the following small example the strage output:

freeing without malloc %53 = call noalias nonnull dereferenceable(32) dereferenceable_or_null(32) i8* @malloc(i64 noundef 32) #20, !enzyme_cache_alloc !57
freeing without malloc %_malloccache107.i.i = call noalias nonnull dereferenceable(4) dereferenceable_or_null(4) i8* @malloc(i64 noundef 4) #20, !enzyme_cache_alloc !59
freeing without malloc %_malloccache110.i.i = call noalias nonnull dereferenceable(4) dereferenceable_or_null(4) i8* @malloc(i64 noundef 4) #20, !enzyme_cache_alloc !61

My julia version 1.11.2.

I hope you have any ideas, thank you!

My code:

using Enzyme


function foo1(uv)
    out = zeros(2)
    for i in eachindex(uv)
        out .+= uv[i]
    end
    out
end

function fun(uv::V,pars) where {V}
    s = zero(Float64)
    for _ in 1:4
        ∇u_x = foo1(uv)
        s += sum(∇u_x)
    end
    return s
end

function fun_grad(f::F,uv::V,
    uvb::V,pars) where {T<:Float64,V<:AbstractVector{T},F<:Function} 

    Enzyme.autodiff(Reverse,Const(f),Duplicated(uv,uvb),Const(pars))
    nothing
end


uv = rand(4); 
vx = ([1.0, 0.0, 0.0, 0.0],
        [0.0, 1.0, 0.0, 0.0],
        [0.0, 0.0, 1.0, 0.0],
        [0.0, 0.0, 0.0, 1.0])

fe = rand(4) 
Ke = ([0.0, 0.0, 0.0, 0.0],
    [0.0, 0.0, 0.0, 0.0],
    [0.0, 0.0, 0.0, 0.0],
    [0.0, 0.0, 0.0, 0.0])

v = rand(10)

Enzyme.autodiff(Enzyme.Forward, fun_grad,
    Const(fun),
    BatchDuplicated(uv,vx),
    BatchDuplicated(fe,Ke),
    Const(v))