JuliaCollections / JuliaCollections/DataStructures.jl

DisjointSets constructor hangs on Vector{Any} arguments.

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Description

julia> DisjointSets([1, 2, 3])
DisjointSets{Int64} with 3 elements:
  1
  2
  3

julia> DisjointSets(Any[1, 2, 3])
^CERROR: InterruptException:
Stacktrace:
 [1] DisjointSets{Any}(::Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Tuple{Array{Any,1}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}) at /Users/Peter/.julia/packages/DataStructures/nBjdy/src/disjoint_set.jl:165 (repeats 156 times)
 [2] _DisjointSets(::Array{Any,1}, ::Base.HasEltype) at /Users/Peter/.julia/packages/DataStructures/nBjdy/src/disjoint_set.jl:167
 [3] DisjointSets(::Array{Any,1}) at /Users/Peter/.julia/packages/DataStructures/nBjdy/src/disjoint_set.jl:166
 [4] top-level scope at REPL[13]:1

This is likely related to #719, but unlike #719, the constructor is intended to work on any iterable argument.

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Research direction

Reproduce the two constructor calls from the issue, then inspect src/disjoint_set.jl around lines 165-167 and the DisjointSets entry points shown in the stack trace. Confirm that Vector{Any} construction terminates while preserving the existing behavior for ordinary vectors, and add regression coverage for both cases.

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Assessment

Tech stack
julia
Domain
data
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Clearly specified
Newbie friendliness
45/100

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