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Quantum Semantics Found Forty Confirmed Library Bugs

QuSema used documentation and domain constraints as an oracle for silent implementation errors in Qiskit and PennyLane.

Published Updated Story ID: mp-2026-10-08-019
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Summary

QuSema used documentation and domain constraints as an oracle for silent implementation errors in Qiskit and PennyLane.

On twenty historical silent bugs, the agent achieved higher mean relocation counts than two general coding agents in the authors' setup. It also reported forty previously unknown bugs confirmed by developers, thirty of them silent rather than crashes, by turning semantic mismatches into executable tests.

Why it matters

QuSema used documentation and domain constraints as an oracle for silent implementation errors in Qiskit and PennyLane.

Limits and context

No additional limitation was separately recorded.

Key claims

  1. QuSema used documentation and domain constraints as an oracle for silent implementation errors in Qiskit and PennyLane.

    Evidence: source-2026-10-08-021

Sources

  1. arXiv preprint 2610.10258arXiv · primary research

Corrections

No corrections have been recorded for this story.