[release/9.0-staging] Process Coalesce-simplified Convert node properly in funcletizer #35721
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AndriySvyryd
approved these changes
Mar 3, 2025
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Fixes dotnet#35656 (cherry picked from commit c54f51d)
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This was referenced Jul 22, 2025
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This was referenced Sep 3, 2025
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Backports #35657
Fixes #35656
Description
The expression tree funcletizer - an important query component - was rewritten in EF 9.0 for NativeAOT support and for better performance. Unfortunately, some bugs were introduced in the process.
Customer impact
In some scenarios, when a coalesce operator is used in a query with a nullable value type, an exception is thrown.
How found
Reported by a user against 9.
Regression
Yes.
Testing
Added test
Risk
Very low - very minimal change; added quirk.