The dart analyzer has terminated

[MarsadMaqsood]

Describe the bug
The dart analyzer has terminated
The Dart analyzer stopped working in some cases

• When adding certain keywords
• When running an app on a physical device using wireless debugging

To Reproduce
Steps to reproduce the behavior:

1. Open Vs Code

2. Add the const keyword to the constructor and also return something Code

3. This also happens if you connect your device using wireless debugging and run the app (I tested on different flutter projects and every time it says dart analyzer ...)

Expected behavior
There should be a warning message, not the dart analyzer to stop working.

Screenshots

Screenshot 1

Screenshot 2 (With Issue)

Please complete the following information:

• Operating System and version:
• VS Code version: 1.80.1
• Dart extension version: 3.68.1
• Dart/Flutter SDK version: 3.10.6
• Target device (if the issue relates to Flutter debugging):

[DanTup]

Thanks for the excellent repro - I can trigger this on current stable:

[12:12:14 PM] [Analyzer] [Error] Unhandled exception:
Exception: Missing implementation of visitFunctionExpression
#0      ThrowingAstVisitor._throw (package:analyzer/dart/ast/visitor.dart:2842:5)
#1      ThrowingAstVisitor.visitFunctionExpression (package:analyzer/dart/ast/visitor.dart:2514:58)
#2      FunctionExpressionImpl.accept (package:analyzer/src/dart/ast/ast.dart:6124:50)
#3      AstBinaryWriter._writeNodeList (package:analyzer/src/summary2/ast_binary_writer.dart:939:19)
#4      AstBinaryWriter.visitArgumentList …

[DanTup]

I was able to reduce this to:

class StylishBottomBar  {
  const StylishBottomBar({
    List<String?> items,
  }) : assert(items.every((String? item) => item != null));
}

It seems to be a Dart analyzer issue so I've moved this to dart-lang/sdk#53075 and it'll be fixed (and ship) in a future Dart/Flutter SDK release.

Thanks!