fix!: claude-generated pre-audit for bitwise in avm - soundness bug and edge-case tests #19247
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Add audit-generated tests for the bitwise component: - NegativeStartSha256NonBoolean: Tests that start_sha256 must be boolean - NegativeStartKeccakNonBoolean: Tests that start_keccak must be boolean - XorIdenticalValuesYieldsZero: Edge case for x XOR x = 0 - OrWithMaxValue: Edge case for OR with 0xFFFFFFFF - AndWithZero: Edge case for AND with 0 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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The start_sha256 column was declared but lacked a boolean constraint, which is required since it's used as a destination selector for lookups from SHA256 into the bitwise trace. Added: start_sha256 * (1 - start_sha256) = 0; This was found during a comprehensive audit of the bitwise component. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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found a soundness bug in bitwise PIL