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Concurrent field reads and writes race on the shared separator, even when operating on separate streams. Keep the separator local to each call and pass it explicitly to the parsing helper.
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Remove shared separator state from
MET_ReadandMET_Writeto eliminate a data race between calls using separate streams. Preserve the public API and add round-trip checks for default and custom separators.Root Cause
Both entry points assigned their separator argument to one global variable, also read by
MET_SkipToVal. Concurrent calls raced even with identical separators; different separators could corrupt parsing or output. Pass the separator directly to the helper instead.Validation
testMeta1Utilswith AppleClang in Debug mode.testMeta1Utilspassed, including round-trip checks for=,:, and|.git diff --checkpassed.AI Assistance
AI assistance was used to implement the change, add tests, and inspect repository history.