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bug(roundtrip): loop-carried mutation is not preserved by atomizer #157
Description
The roundtrip corpus still fails for mutation-heavy loops with accumulator side effects. Current evidence: tests slash test_roundtrip_python_corpus.py marks loop_accumulation as an expected failure, and functions like flatten_list do not preserve behavior after Python to NLS to Python conversion. Impact: repo-scale scans now pass structurally, but behavioral parity still breaks for common accumulator patterns. Desired outcome: LOGIC extraction should preserve loop body side effects well enough to re-emit equivalent Python, or explicitly mark the pattern unsupported.
Activity
Mnehmos commentedon Apr 2, 2026
Resolved in commit 0b2ecd8. FOR each loop steps now re-emit executable loop bodies, including accumulator mutation patterns such as result.extend(...) and augmented assignments, and the behavioral corpus now passes for flatten_list.