UndefRefError or julia crash when filtering empty vectors with abstract eltype

JuliaImages / ImageFiltering.jl

Julia implementations of multidimensional array convolution and nonlinear stencil operations

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UndefRefError or julia crash when filtering empty vectors with abstract eltype #180

Open yha opened 4 years ago

yha commented 4 years ago

julia> using ImageFiltering
julia> using ImageFiltering.KernelFactors: gaussian
julia> imfilter(Real[], gaussian(1))
ERROR: UndefRefError: access to undefined reference

Running this a few times crashes Julia. Another failure case:

using StaticArrays
imfilter(SVector{2}[], gaussian(1))