Crash on duplicated field

[lukechurch]

Crash in fasta
@peter-ahe-google
id: 1c450621059dff5d32580731076a1f94af31ddb1

Internal problem: Unhandled field with more than one declaration in REDACTED
#0      internalProblem (package:front_end/src/fasta/problems.dart:29:3)
#1      unhandled (package:front_end/src/fasta/problems.dart:41:10)
#2      BodyBuilder.finishFields (package:front_end/src/fasta/kernel/body_builder.dart:449:11)
#3      DietListener.listenerFinishFields (package:front_end/src/fasta/source/diet_listener.dart:615:14)
#4      DietListener.parseFields (package:front_end/src/fasta/source/diet_listener.dart:660:5)
#5      DietListener.buildFields (package:front_end/src/fasta/source/diet_listener.dart:522:5)
#6      DietListener.endFields (package:front_end/src/fasta/source/diet_listener.dart:218:5)
#7      Parser.parseFields (package:front_end/src/fasta/parser/parser.dart:2358:16)
#8      Parser.parseMember (package:front_end/src/fasta/parser/parser.dart:2980:11)
#9      Parser.parseClassBody (package:front_end/src/fasta/parser/parser.dart:2866:15)
#10     Parser.parseClass (package:front_end/src/fasta/parser/parser.dart:1223:13)
#11     Parser.parseClassOrNamedMixinApplication (package:front_end/src/fasta/parser/parser.dart:1183:14)
#12     Parser.parseTopLevelKeywordDeclaration (package:front_end/src/fasta/parser/parser.dart:361:14)
#13     Parser.parseTopLevelDeclarationImpl (package:front_end/src/fasta/parser/parser.dart:295:14)
#14     Parser.parseUnit (package:front_end/src/fasta/parser/parser.dart:271:15)
#15     SourceLoader.buildBody (package:front_end/src/fasta/source/source_loader.dart:178:14)
<asynchronous suspension>
#16     Loader.buildBodies (package:front_end/src/fasta/loader.dart:125:13)
<asynchronous suspension>
#17     KernelTarget.buildProgram (package:front_end/src/fasta/kernel/kernel_target.dart:289:20)
<asynchronous suspension>
#18     generateKernelInternal (package:front_end/src/kernel_generator_impl.dart:127:36)
<asynchronous suspension>
#19     BulkCompiler.compile.<anonymous closure> (file:///Users/lukechurch/GitRepos/dart-sdk/sdk/pkg/front_end/tool/_fasta/bulk_compile.dart:52:37)
<asynchronous suspension>
#20     CompilerContext.runInContext.<anonymous closure> (package:front_end/src/fasta/compiler_context.dart:89:33)
#21     _rootRun (dart:async/zone.dart:1124)
#22     _CustomZone.run (dart:async/zone.dart:1021)
#23     runZoned (dart:async/zone.dart:1499)
#24     CompilerContext.runInContext (package:front_end/src/fasta/compiler_context.dart:89:12)
#25     CompilerContext.runWithOptions (package:front_end/src/fasta/compiler_context.dart:96:41)
#26     BulkCompiler.compile (file:///Users/lukechurch/GitRepos/dart-sdk/sdk/pkg/front_end/tool/_fasta/bulk_compile.dart:49:28)
#27     runFailedPath (file:///Users/lukechurch/GitRepos/dart-sdk/sdk/pkg/front_end/tool/_fasta/fuzz_driver.dart:69:27)
<asynchronous suspension>
#28     testDirectory (file:///Users/lukechurch/GitRepos/dart-sdk/sdk/pkg/front_end/tool/_fasta/fuzz_driver.dart:42:9)
<asynchronous suspension>
#29     main (file:///Users/lukechurch/GitRepos/dart-sdk/sdk/pkg/front_end/tool/_fasta/fuzz_driver.dart:137:7)
#30     _startIsolate.<anonymous closure> (dart:isolate-patch/dart:isolate/isolate_patch.dart:275)
#31     _RawReceivePortImpl._handleMessage (dart:isolate-patch/dart:isolate/isolate_patch.dart:163)

[askeksa-google]

Variable repeated, first as second on the line with an initializer, then alone:

class Repeated {
  var a, b = 'Something';
  var b;
}

[askeksa-google]

This should be looked at after the elimination of deprecated_inputError is complete.