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FIX: Validate driver-provided fetch sizes - #803

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gargsaumya wants to merge 7 commits into
saumya/native-size-validationfrom
saumya/native-fetch-validation
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gargsaumya wants to merge 7 commits into
saumya/native-size-validationfrom
saumya/native-fetch-validation

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@gargsaumya

@gargsaumya gargsaumya commented Sep 21, 2026

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Work Item / Issue Reference

ADO Work Item: AB#47843


Summary

  • Validate ODBC row counts, indicators, and column-buffer layout before access.
  • Check streamed fetch growth and Arrow source/destination bounds.
  • Correct fixed-width buffer lengths and reject malformed wide-character data.

Stacked on #802 so this review contains only driver-provided fetch validation.

@github-actions github-actions Bot added the pr-size: medium Moderate update size label Sep 21, 2026
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