queryverse / queryverse/DataValues.jl
promotion causes segfault/stack overflow
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- Dominant language
- Julia
- Stars
- 14
- Forks
- 6
- Avg merge
- 1d 7h
- Merged PRs (30d)
- 2
Description
julia> using DataValues
julia> promote(nothing,DataValue{Any}())
Segmentation fault: 11
(see other examples on https://github.com/JuliaLang/julia/issues/29639)
The segfault is obviously a Julia problem, but the discussion there suggests that it is a misspecified promotion that results in a stack overflow
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reproducing the Julia REPL example promote(nothing, DataValue{Any}()) and read the referenced Julia issue #29639 for the promotion discussion. Determine the promotion behavior that causes the recursive failure; done means the example no longer leads to a segmentation fault or stack overflow.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- julia
- Domain
- data
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100