Mayank Patke

See also #39780 (this test flakes on DDC Firefox) and #47725 (other async tests flake on dart2js Windows Chrome).

Currently, `HPhi` is just one of the many subclasses of `HInstruction`, but it would be nice to have a stronger separation between phis and non-phis. Our current type hierarchy is...

Cast pattern executes even when operand subpattern is refuted

4

Example taken from [`tests/language/patterns/exhaustiveness/nullable_cast_test.dart`](https://github.com/dart-lang/sdk/blob/de871364c3dac9e21d76c452a4c21fda789fc453/tests/language/patterns/exhaustiveness/nullable_cast_test.dart#L88) in the SDK: ```dart import 'dart:async'; exhaustiveNonNullableFutureOrTypeVariable2(FutureOr o) => switch (o) { FutureOr() as FutureOr => 0, }; main() { exhaustiveNonNullableFutureOrTypeVariable2( Future.value(null)); } ``` This code...

Running into this issue with https://github.com/dart-lang/dart-vim-plugin + Dart Analysis Server, but I'm not sure if it's a general issue. Concrete example: ```dart void main() { var x = 1; var...