git-bisect-debugging
Git Bisect Debugging
Overview
Use this skill to isolate first-bad commits quickly and reproducibly, so fixes target root cause instead of symptoms.
Scope Boundaries
- Use this skill when the task matches the trigger condition described in
description. - Do not use this skill when the primary task falls outside this skill's domain.
Shared References
- Determinism guidance:
references/bisect-determinism-guidance.md
Templates And Assets
- Session log template:
assets/bisect-session-log-template.md
- Verification checklist:
assets/bisect-checklist.md
Inputs To Gather
- Known good commit and known bad commit.
- Deterministic pass/fail command for classification.
- Environment requirements for reproducible execution.
- Evidence expectations for culprit validation.
Deliverables
- Culprit commit candidate with evidence trail.
- Bisect session log with classified steps.
- Confidence statement and next action recommendation.
Workflow
- Validate good/bad endpoints and deterministic classifier command.
- Run bisect and classify commits consistently.
- Capture classifications in
assets/bisect-session-log-template.md. - Re-validate candidate culprit around boundary commits.
- Close with
assets/bisect-checklist.mdand next-step recommendation.
Quality Standard
- Good/bad endpoints are verified before bisect begins.
- Classification is deterministic and repeatable.
- Culprit claim is supported by reproducible evidence.
- Session records are sufficient for peer audit.
Failure Conditions
- Stop when classification is flaky or environment-dependent.
- Stop when no reliable good/bad endpoints can be identified.
- Escalate when interacting commits prevent single-commit isolation.
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