I am new to Julia. I am working on a Julia package which the writer is not available.
This is the part of the code where I have a problem with:
function find_partition(model::Model, ms)
ps = Dict{Z3Expr,Vector{Int}}()
for (i, m) in enumerate(ms)
mval = Z3.eval(model, m, false)
println(ps)
println(mval)
println(typeof(mval))
if haskey(ps, mval)
push!(ps[mval], i)
else
push!(ps, mval=>Int[i])
end
end
values(ps)
end
Here is the output:
Dict{Z3.Expr, Vector{Int64}}()
1.0
Z3.ExprAllocated
ERROR: TypeError: in typeassert, expected UInt64, got a value of type UInt32
Stacktrace:
[1] hashindex(key::Z3.ExprAllocated, sz::Int64)
@ Base ./dict.jl:169
[2] ht_keyindex(h::Dict{Z3.Expr, Vector{Int64}}, key::Z3.ExprAllocated)
@ Base ./dict.jl:284
[3] haskey(h::Dict{Z3.Expr, Vector{Int64}}, key::Z3.ExprAllocated)
@ Base ./dict.jl:550
[4] find_partition(model::Z3.ModelAllocated, ms::Vector{Z3.ExprAllocated})
@ Absynth.NLSat ~/Desktop/faoc/Absynth/src/nlsat/cfinitesolver.jl:101
I tried following it and found out that somewhere inside dict.jl in Julia, there are such lines
sz = length(h.keys)
...
index = hashindex(key, sz)
And this is the hashindex written somewhere in dict.jl:
hashindex(key, sz) = (((hash(key)::UInt % Int) & (sz-1)) + 1)::Int
It seems that the version of Z3 used in this package is not compatible with the current version of Julia. I am not sure if this package was working in the beginning at all.
Is there any quick fix to this? Like rewriting this part of the code:
if haskey(ps, mval)
push!(ps[mval], i)
else
push!(ps, mval=>Int[i])
in a way that this won’t happen? I tried writing like merge!(ps,Dict(mval=>Int[i])) but it’s eventually reaching this hashindex function again. If I install the older versions of Julia, would it be possible to solve this issue or the problem is somewhere else?