Johnni Winther 58c336e22b [_fe_analyzer_shared] Avoid deconstruction of potentially nullable type variables ...

The exhaustiveness model relies on null being extracted from nullable, for instance modeling `int?` as `int|Null`. This failed on type variable that are potentially nullable but not explicitly nullable. For these `Null` should be extract from their bound and not from themselves.

The logic in the getStaticType method now uses `isNullable` to determine both when to extract and to combine, so to avoid extracting but not combining `Null` for type variables and also not combine but not extract for instance for `void`.

Closes #56998

Change-Id: I47c2d0d6535ca66fe00e6344b11550c4308a7388
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/392944
Reviewed-by: Chloe Stefantsova <cstefantsova@google.com>
Commit-Queue: Johnni Winther <johnniwinther@google.com>

2024-11-01 08:47:02 +00:00

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main_lib.dart

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main.dart

[_fe_analyzer_shared] Avoid deconstruction of potentially nullable type variables

2024-11-01 08:47:02 +00:00