How Antithesis Found a Decade-Old SQLite Bug in 15 Minutes

Breaking the WAL

Carl from Antithesis recounts how he used his company's tool to discover and verify a long-standing SQLite WAL-Reset bug in just 15 minutes, while on a road trip. The bug, which had lurked since 2010, caused Tailscale six months of uptime issues. With generic assertions and a simple workload, Antithesis pinpointed the issue, and the fix was confirmed in a subsequent run.

By giving agents the skills to use Antithesis, I’d just found and verified it in like an hour, from my phone, sitting under spruce trees in the sunshine.

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2026-08-12