Crash on InferStaticVariableTypeTask in Strong mode

[lukechurch]

Version: 0.27.3-alpha.6
Source

import 'dart:htms';
import hdart:math'Nshow Random;

void a
j e){
  var pp = new PirateName(firstName: name)
}

void generateBadge_Click(Event e){

}t
clags PirateNamr{
  String set pp =>
    z a(e.isEmpty ? "" : "$k the $l";
}

Stack trace

AnalysisException: Cannot compute DART_ERRORS for StringSource (main.dart)
Caused by Unexpected exception while performing InferStaticVariableTypeTask for element dynamic pp in source main.dart
#0      AnalysisTask._safelyPerform (package:analyzer/task/model.dart:339:7)
#1      AnalysisTask.perform (package:analyzer/task/model.dart:229:7)
#2      AnalysisDriver.performWorkItem (package:analyzer/src/task/driver.dart:276:10)
#3      AnalysisDriver.performAnalysisTask (package:analyzer/src/task/driver.dart:251:9)
#4      AnalysisContextImpl.performAnalysisTask.<anonymous closure> (package:analyzer/src/context/context.dart:1167:27)
#5      _PerformanceTagImpl.makeCurrentWhile (package:analyzer/src/generated/utilities_general.dart:212:15)
#6      AnalysisContextImpl.performAnalysisTask (package:analyzer/src/context/context.dart:1165:50)
#7      Analyzer._ensureAnalysisDone (package:services/src/analyzer.dart:161:24)
#8      Analyzer.analyzeMulti (package:services/src/analyzer.dart:100:7)
#9      CommonServer._analyzeMulti.<_analyzeMulti_async_body> (package:services/src/common_server.dart:316:12)
#10     Future.Future.microtask.<anonymous closure> (dart:async/future.dart:144)
#11     _microtaskLoop (dart:async/schedule_microtask.dart:41)
#12     _startMicrotaskLoop (dart:async/schedule_microtask.dart:50)
#13     _runPendingImmediateCallback (dart:isolate-patch/isolate_patch.dart:96)
#14     _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:149)

Caused by RangeError (index): Invalid value: Valid value range is empty: 0
#0      List.[] (dart:core-patch/array.dart:134)
#1      setFieldType (package:analyzer/src/task/strong_mode.dart:32:31)
#2      InferStaticVariableTypeTask.internalPerform (package:analyzer/src/task/dart.dart:3160:7)
#3      AnalysisTask._safelyPerform (package:analyzer/task/model.dart:329:9)
#4      AnalysisTask.perform (package:analyzer/task/model.dart:229:7)
#5      AnalysisDriver.performWorkItem (package:analyzer/src/task/driver.dart:276:10)
#6      AnalysisDriver.performAnalysisTask (package:analyzer/src/task/driver.dart:251:9)
#7      AnalysisContextImpl.performAnalysisTask.<anonymous closure> (package:analyzer/src/context/context.dart:1167:27)
#8      _PerformanceTagImpl.makeCurrentWhile (package:analyzer/src/generated/utilities_general.dart:212:15)
#9      AnalysisContextImpl.performAnalysisTask (package:analyzer/src/context/context.dart:1165:50)
#10     Analyzer._ensureAnalysisDone (package:services/src/analyzer.dart:161:24)
#11     Analyzer.analyzeMulti (package:services/src/analyzer.dart:100:7)
#12     CommonServer._analyzeMulti.<_analyzeMulti_async_body> (package:services/src/common_server.dart:316:12)
#13     Future.Future.microtask.<anonymous closure> (dart:async/future.dart:144)
#14     _microtaskLoop (dart:async/schedule_microtask.dart:41)
#15     _startMicrotaskLoop (dart:async/schedule_microtask.dart:50)
#16     _runPendingImmediateCallback (dart:isolate-patch/isolate_patch.dart:96)
#17     _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:149)


#0      testPath.<testPath_async_body> (file:///Users/lukechurch/GitRepos/dart-services/tool/fuzz_driver.dart:238:7)
#1      _asyncErrorWrapperHelper.<anonymous closure> (dart:async-patch/async_patch.dart:34)
#2      _RootZone.runBinary (dart:async/zone.dart:1142)
#3      _Future._propagateToListeners.handleError (dart:async/future_impl.dart:579)
#4      _Future._propagateToListeners (dart:async/future_impl.dart:641)
#5      _Future._completeError (dart:async/future_impl.dart:432)
#6      _SyncCompleter._completeError (dart:async/future_impl.dart:56)
#7      _Completer.completeError (dart:async/future_impl.dart:27)
#8      testAnalysis.<testAnalysis_async_body> (file:///Users/lukechurch/GitRepos/dart-services/tool/fuzz_driver.dart:276:1)
#9      _asyncErrorWrapperHelper.<anonymous closure> (dart:async-patch/async_patch.dart:34)
#10     _RootZone.runBinary (dart:async/zone.dart:1142)
#11     _Future._propagateToListeners.handleError (dart:async/future_impl.dart:579)
#12     _Future._propagateToListeners (dart:async/future_impl.dart:641)
#13     _Future._completeError (dart:async/future_impl.dart:432)
#14     _Future.timeout.<anonymous closure> (dart:async/future_impl.dart:711)
#15     _RootZone.runBinary (dart:async/zone.dart:1142)
#16     _Future._propagateToListeners.handleError (dart:async/future_impl.dart:579)
#17     _Future._propagateToListeners (dart:async/future_impl.dart:641)
#18     _Future._completeError (dart:async/future_impl.dart:432)
#19     _Future._asyncCompleteError.<anonymous closure> (dart:async/future_impl.dart:488)
#20     _microtaskLoop (dart:async/schedule_microtask.dart:41)
#21     _startMicrotaskLoop (dart:async/schedule_microtask.dart:50)
#22     _runPendingImmediateCallback (dart:isolate-patch/isolate_patch.dart:96)
#23     _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:149)

[scheglov]

https://codereview.chromium.org/1850623005

[scheglov]

fd4e357