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Misleading diagnostic when invoking nullable non-function #55488

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sigurdm opened this issue Apr 17, 2024 · 1 comment
Open

Misleading diagnostic when invoking nullable non-function #55488

sigurdm opened this issue Apr 17, 2024 · 1 comment
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analyzer-ux area-analyzer Use area-analyzer for Dart analyzer issues, including the analysis server and code completion. P2 A bug or feature request we're likely to work on type-bug Incorrect behavior (everything from a crash to more subtle misbehavior)

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@sigurdm
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sigurdm commented Apr 17, 2024 
import 'dart:isolate';

main() {
  Isolate.packageConfigSync();
}

Get's the following diagnostic.

image 
The function can't be unconditionally invoked because it can be 'null'.
Try adding a null check ('!').dart[unchecked_use_of_nullable_value](https://dart.dev/diagnostics/unchecked_use_of_nullable_value)

The message is wrong - the nullable thing here is a Uri not a function.

Rather than complaining about the invocation of something non-nullable, I would prefer to be told first that it is not a function
@mraleph mraleph added area-analyzer Use area-analyzer for Dart analyzer issues, including the analysis server and code completion. type-bug Incorrect behavior (everything from a crash to more subtle misbehavior) labels Apr 17, 2024
@bwilkerson bwilkerson added analyzer-ux P2 A bug or feature request we're likely to work on labels Apr 17, 2024
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@scheglov

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analyzer-ux area-analyzer Use area-analyzer for Dart analyzer issues, including the analysis server and code completion. P2 A bug or feature request we're likely to work on type-bug Incorrect behavior (everything from a crash to more subtle misbehavior)
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@mraleph @bwilkerson @sigurdm