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Posted to github@arrow.apache.org by "tustvold (via GitHub)" <gi...@apache.org> on 2023/03/25 22:54:31 UTC

[GitHub] [arrow-rs] tustvold opened a new issue, #3942: I256 Checked Subtraction Overflows for i256::MINUS_ONE

tustvold opened a new issue, #3942:
URL: https://github.com/apache/arrow-rs/issues/3942

   **Describe the bug**
   <!--
   A clear and concise description of what the bug is.
   -->
   
   **To Reproduce**
   <!--
   Steps to reproduce the behavior:
   -->
   
   ```
   i256::from_parts(0, i128::MAX).checked_sub(i256::MINUS_ONE).unwrap();
   ```
   
   **Expected behavior**
   <!--
   A clear and concise description of what you expected to happen.
   -->
   
   Shouldn't panic
   
   **Additional context**
   <!--
   Add any other context about the problem here.
   -->


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[GitHub] [arrow-rs] tustvold closed issue #3942: I256 Checked Subtraction Overflows for i256::MINUS_ONE

Posted by "tustvold (via GitHub)" <gi...@apache.org>.
tustvold closed issue #3942: I256 Checked Subtraction Overflows for i256::MINUS_ONE
URL: https://github.com/apache/arrow-rs/issues/3942


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[GitHub] [arrow-rs] tustvold commented on issue #3942: I256 Checked Subtraction Overflows for i256::MINUS_ONE

Posted by "tustvold (via GitHub)" <gi...@apache.org>.
tustvold commented on issue #3942:
URL: https://github.com/apache/arrow-rs/issues/3942#issuecomment-1483943700

   A similar issue can be seen with
   
   ```
   i256::from_parts(u128::MAX, i128::MIN)
               .checked_add(i256::from_parts(1, -1))
               .unwrap();
   ```


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