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Asserts at -O0, UB at -O2: A Flag-Matrix Grader for AI C++ Patches

This story is from 2026-09-19. It is preserved in the archive; the latest stories are on the live feed.

A maintainer once accepted an AI-written patch to a small C++ ring buffer. The eval job compiled the translation unit with the toolchain default, which in that repo meant -O0 -g . Three golden cases passed. The pull request looked boring in the best way. The release build used -O2 . Under wraparoun…

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  1. 2026-09-19 09:23 · DEV Community — AI
    Asserts at -O0, UB at -O2: A Flag-Matrix Grader for AI C++ Patches

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