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Ran 17 Oct 2025 11:03AM UTC

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Committed 17 Oct 2025 10:38AM UTC coverage: 76.639% (-0.002%) from 76.641%

Job # 18590213208.1

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push

github

Committed by

web-flow

Commit Message

Fixing fluctuating errors and crash during self assignment of parameters. (#4190)

Problem: Previously, during variable self-assignment (e.g., SELECT @var = @var), Babelfish reused the same Datum reference for both source and target without creating a copy. This caused memory corruption, use-after-free errors, and crashes due to unsafe sharing across memory contexts.

Root Cause: The source and target pointed to the same memory location, which could be invalidated by context switches or garbage collection.

Solution: Introduced safe duplication using datumCopy() to ensure each variable has its own memory allocation in the correct context (estate->datum_context). This preserves data integrity and prevents invalid memory access.

Issues Resolved
BABEL-6119, BABEL-5947

Signed-off-by: Tanya Gupta <tanyagp@amazon.com>
Co-authored-by: Tanya Gupta <tanyagp@amazon.com>

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