Code-QA-Bench: Separating Code Reasoning from Documentation Memorization in Repository-Level QA
We present Code-QA-Bench, a fully automated framework for synthesizing repository-level code understanding benchmarks that separates genuine code comprehension from documentation recall and pretraining memorization. The framework makes two methodological contributions: (1) an answer-first generation pipeline where a tool-equipped agent explores source code to produce verified gold answers before deriving questions, ensuring every task is grounded in real code structure; and (2) a three-condition experimental design evaluating agents under closed-book (no repository), code-only (documentation removed), and documented (full repository) conditions, with deltas directly quantifying documentat...
| Authors | Jun Zhang, JianYing Qu, Hanwen Du et al. |
|---|---|
| Primary category | cs.SE |
| Published | 28 May 2026 |
| Last updated at source | 28 May 2026 |
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