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Ran 30 Oct 2025 04:23PM UTC

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Committed 30 Oct 2025 03:43PM UTC coverage: 75.677% (+0.001%) from 75.676%

Job # 18946473464.1

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push

github

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web-flow

Commit Message

Fixing fluctuating errors and crash during self assignment of parameters. (#4220)

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>

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