puneetdixit200 opened a new pull request, #49984:
URL: https://github.com/apache/arrow/pull/49984
### Rationale
Fixes remaining Gandiva string length safety issues from GH-49973.
### What changed
- Uses checked multiplication before addition in `quote_utf8` and
`to_hex_binary`.
- Rejects negative valid input lengths in `concat_ws` before
allocation/copy.
- Adds targeted regression tests for overflow and negative length handling.
### Verification
- `git diff --check`
- `ctest --test-dir cpp\build-gandiva-vs-conda-zlib -C Release -R
gandiva-precompiled-test --output-on-failure`
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