Deep copying OrderedDicts

[pcmoritz]

Dear all,

there might be an issue in how OrderedDicts are handled by deepcopy:

julia> d1 = OrderedDict([("hi", 1)])
OrderedDict{ASCIIString,Int64} with 1 entry:
  "hi" => 1

julia> d2 = deepcopy(d1)
OrderedDict{ASCIIString,Int64} with 1 entry:
  "hi" => 1

julia> d2["hi"] = 2
2

julia> d1
OrderedDict{ASCIIString,Int64} with 1 entry:
  "hi" => 2

I would expect a behaviour similar as this one:

julia> d1 = Dict([("hi", 1)])
Dict{ASCIIString,Int64} with 1 entry:
  "hi" => 1

julia> d2 = deepcopy(d1)
Dict{ASCIIString,Int64} with 1 entry:
  "hi" => 1

julia> d2["hi"] = 2
2

julia> d1
Dict{ASCIIString,Int64} with 1 entry:
  "hi" => 1

I am using Julia 0.3.5 and DataStructures 0.3.5.

Let me know if you have an idea where the problem is or if you have an idea for a workaround. Thanks in advance!

Best,
Philipp.

Edit: Added formatting (kms)

[kmsquire]

Interestingly, this works on v0.4.

[kmsquire]

This was fixed on Julia 0.4 by JuliaLang/julia#8560, but that was never backported to Julia v0.3. That should happen (I believe) with the next point release of v0.3.

[pcmoritz]

Thank you!