julia> x=SparseMatrixCSC(4, 4, Int[], Int[], Int[]);

julia> x
Error showing value of type SparseMatrixCSC{Int64,Int64}:
ERROR: BoundsError: attempt to access 0-element Array{Int64,1}
  at index [0]
 [inlined code] from sparse/sparsematrix.jl:34
 in showarray at sparse/sparsematrix.jl:85
 in anonymous at replutil.jl:38
 in with_output_limit at ./show.jl:1341
 [inlined code] from show.jl:1337
 in writemime at replutil.jl:37
 [inlined code] from expr.jl:8 (repeats 2 times)
 in display at REPL.jl:114
 [inlined code] from multimedia.jl:151
 in display at multimedia.jl:163
 in print_response at REPL.jl:134
 in print_response at REPL.jl:121
 in anonymous at REPL.jl:624
 in run_interface at ./LineEdit.jl:1610
 in run_frontend at ./REPL.jl:864
 in run_repl at ./REPL.jl:167
 in _start at ./client.jl:343

julia> x[1,1]
ERROR: BoundsError: attempt to access 0-element Array{Int64,1}
  at index [1]
 in getindex at sparse/sparsematrix.jl:1348
 in eval at ./boot.jl:265