JuliaImages / JuliaImages/ImageFiltering.jl
UndefRefError or julia crash when filtering empty vectors with abstract eltype
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- Dominant language
- Julia
- Stars
- 104
- Forks
- 52
- PR merge metrics
- No merged PRs in 30d
Description
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))
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First steps
- Read the whole issue, then the project's contributing guide.
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- Open a pull request that references the issue number.
Research direction
No source file or test is named. Start by reproducing the imfilter calls with Real[] and SVector{2}[] using gaussian(1), then trace the empty-vector path for abstract element types. Done means both cases avoid UndefRefError and no longer crash Julia.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- julia
- Domain
- computer-vision
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 30/100