Merge pull request #168 from tkoolen/remove-deepcopy-specialization

Remove deepcopy specialization for Dict

src/util.jl

@@ -17,24 +17,6 @@ Base.getindex{T}(A::NullVector{T}, i::Int) = zero(T)
 # Base.setindex!{N}(A::NullVector, v, I::Vararg{Int, N}) = error()
 Base.linearindexing{T}(::Type{NullVector{T}}) = Base.LinearFast()
 
-# https://github.com/JuliaLang/julia/issues/19921
-function Base.deepcopy_internal(x::Dict, stackdict::ObjectIdDict)
-    if haskey(stackdict, x)
-        return stackdict[x]::typeof(x)
-    end
-
-    if isbits(eltype(x))
-        return (stackdict[x] = copy(x))
-    end
-
-    dest = similar(x)
-    stackdict[x] = dest
-    for (k, v) in x
-        dest[Base.deepcopy_internal(k, stackdict)] = Base.deepcopy_internal(v, stackdict)
-    end
-    dest
-end
-
 # type of a view of a vector
 # TODO: a bit too specific
 typealias VectorSegment{T} SubArray{T,1,Array{T, 1},Tuple{UnitRange{Int64}},true}