Cannot use factory constructor in augmented class about sdk

[scheglov]

https://dart-review.googlesource.com/c/sdk/+/362603

[goderbauer]

This also crashes during compilation:

org-dartlang-augmentation:/Users/goderbauer/dev/scratchpad/macros_playground/lib/main.dart-1:12:8: Error: Couldn't find constructor 'Foo'.
  }) = Foo;
       ^
org-dartlang-augmentation:/Users/goderbauer/dev/scratchpad/macros_playground/lib/main.dart-1:12:8: Error: Redirection constructor target not found: 'Foo'
  }) = Foo;
       ^
Unhandled exception:
Crash when compiling:
org-dartlang-augmentation:/Users/goderbauer/dev/scratchpad/macros_playground/lib/main.dart-1:8:17: Internal problem: Expected 'null', but got 'ReturnStatement'.
  const factory Bar({
                ^

#0      internalProblem (package:front_end/src/fasta/problems.dart:52)
#1      unexpected (package:front_end/src/fasta/problems.dart:78)
#2      RedirectingFactoryBuilder.setRedirectingFactoryBody (package:front_end/src/fasta/source/source_factory_builder.dart:384)
#3      ClassDeclarationMixin.resolveConstructors (package:front_end/src/fasta/source/class_declaration.dart:161)
#4      SourceLibraryBuilder.resolveConstructors (package:front_end/src/fasta/source/source_library_builder.dart:1652)
#5      SourceLibraryBuilder.resolveConstructors (package:front_end/src/fasta/source/source_library_builder.dart:1645)
#6      SourceLoader.resolveConstructors (package:front_end/src/fasta/source/source_loader.dart:1773)
#7      KernelTarget.buildOutlines.<anonymous closure> (package:front_end/src/fasta/kernel/kernel_target.dart:519)
<asynchronous suspension>
#8      withCrashReporting (package:front_end/src/fasta/crash.dart:133)
<asynchronous suspension>
#9      KernelTarget.buildOutlines (package:front_end/src/fasta/kernel/kernel_target.dart:424)
<asynchronous suspension>
#10     _buildInternal (package:front_end/src/kernel_generator_impl.dart:150)
<asynchronous suspension>
#11     withCrashReporting (package:front_end/src/fasta/crash.dart:133)
<asynchronous suspension>
#12     kernelForProgramInternal.<anonymous closure> (package:front_end/src/api_prototype/kernel_generator.dart:65)
<asynchronous suspension>
#13     CompilerContext.clear (package:front_end/src/fasta/compiler_context.dart:139)
<asynchronous suspension>
#14     kernelForProgramInternal (package:front_end/src/api_prototype/kernel_generator.dart:64)
<asynchronous suspension>
#15     kernelForProgram (package:front_end/src/api_prototype/kernel_generator.dart:50)
<asynchronous suspension>
#16     compileToKernel (package:vm/kernel_front_end.dart:469)
<asynchronous suspension>
#17     FrontendCompiler.compile (package:frontend_server/frontend_server.dart:639)
<asynchronous suspension>
#18     starter (package:frontend_server/starter.dart:101)
<asynchronous suspension>
#19     main (file:///Volumes/Work/s/w/ir/x/w/sdk/pkg/frontend_server/bin/frontend_server_starter.dart:13)
<asynchronous suspension>

Target kernel_snapshot failed: Exception

Command PhaseScriptExecution failed with a nonzero exit code
warning: Run script build phase 'Run Script' will be run during every build because it does not specify any outputs. To address this warning, either add output dependencies to the script phase, or configure it to run in every build by unchecking "Based on dependency analysis" in the script phase. (in target 'Flutter Assemble' from project 'Runner')
** BUILD FAILED **

[goderbauer]

As of Dart SDK version: 3.5.0-65.0.dev the analyzer warning is gone, but compilation still crashes:

Unhandled exception:
Crash when compiling:
org-dartlang-augmentation:/Users/goderbauer/dev/scratchpad/macros_playground/lib/main.dart-1:9:15: Internal problem: Expected 'null', but got 'ReturnStatement'.
const factory Counter({
              ^

#0      internalProblem (package:front_end/src/fasta/problems.dart:52)
#1      unexpected (package:front_end/src/fasta/problems.dart:78)
#2      RedirectingFactoryBuilder.setRedirectingFactoryBody (package:front_end/src/fasta/source/source_factory_builder.dart:384)
#3      ClassDeclarationMixin.resolveConstructors (package:front_end/src/fasta/source/class_declaration.dart:161)
#4      SourceLibraryBuilder.resolveConstructors (package:front_end/src/fasta/source/source_library_builder.dart:1652)
#5      SourceLibraryBuilder.resolveConstructors (package:front_end/src/fasta/source/source_library_builder.dart:1645)
#6      SourceLoader.resolveConstructors (package:front_end/src/fasta/source/source_loader.dart:1773)
#7      KernelTarget.buildOutlines.<anonymous closure> (package:front_end/src/fasta/kernel/kernel_target.dart:519)
<asynchronous suspension>
#8      withCrashReporting (package:front_end/src/fasta/crash.dart:133)
<asynchronous suspension>
#9      KernelTarget.buildOutlines (package:front_end/src/fasta/kernel/kernel_target.dart:424)
<asynchronous suspension>
#10     IncrementalCompiler.computeDelta.<anonymous closure> (package:front_end/src/fasta/incremental_compiler.dart:367)
<asynchronous suspension>
#11     CompilerContext.clear (package:front_end/src/fasta/compiler_context.dart:130)
<asynchronous suspension>
#12     IncrementalCompiler.compile (package:vm/incremental_compiler.dart:77)
<asynchronous suspension>
#13     FrontendCompiler.compile (package:frontend_server/frontend_server.dart:617)
<asynchronous suspension>
#14     listenAndCompile.<anonymous closure> (package:frontend_server/frontend_server.dart:1311)
<asynchronous suspension>
the Dart compiler exited unexpectedly.
the Dart compiler exited unexpectedly.