Stack overflow in `triu`
Nobody has claimed this yet.
Assessment
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Newbie friendliness
- 68/100
Research direction
Start by running the Rust example from the issue and then inspect the ArrayRef::triu entry point linked in the report. Verify that the transposed, inserted-axis view no longer overflows the stack, and add or update coverage for this case so the regression is prevented.
Written by the indexing model from the issue text.
Description
The docs don't mention this as a hazard, so I figure it's a bug: https://docs.rs/ndarray/latest/ndarray/struct.ArrayRef.html#method.triu
use ndarray::{Array2, Axis};
fn main() {
let a: Array2<f64> = Array2::from_shape_fn((3, 4), |(i, j)| (i * 4 + j) as f64);
let ft = a.t();
let widened = ft.insert_axis(Axis(2));
widened.triu(0);
}
Found using a fuzzer.
- Dominant language
- Rust
- Stars
- 4.3k
- Forks
- 391
- PR merge metrics
- No merged PRs in 30d
Contributor guide
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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.
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