Dart compiler closes unexpectedly if an error occurs while reading contents of a box

Unhandled exception:
FormatException: Invalid radix-10 number (at character 1)
dart:async
^

#0 int._handleFormatError (dart:core-patch/integers_patch.dart:126:5)
#1 int._parseRadix (dart:core-patch/integers_patch.dart:137:16)
#2 int._parse (dart:core-patch/integers_patch.dart:98:12)
#3 int.parse (dart:core-patch/integers_patch.dart:60:12)
#4 parseDefinitionTypes (package:front_end/src/api_prototype/expression_compilation_tools.dart:113:36)
#5 createDefinitionsWithTypes (package:front_end/src/api_prototype/expression_compilation_tools.dart:32:7)
#6 IncrementalCompiler.compileExpression (package:vm/incremental_compiler.dart:219:50)
#7 FrontendCompiler.compileExpression (package:frontend_server/frontend_server.dart:981:45)
#8 listenAndCompile. (package:frontend_server/frontend_server.dart:1452:26)
#9 _RootZone.runUnaryGuarded (dart:async/zone.dart:1594:10)
#10 _BufferingStreamSubscription._sendData (dart:async/stream_impl.dart:339:11)
#11 _BufferingStreamSubscription._add (dart:async/stream_impl.dart:271:7)
#12 _SinkTransformerStreamSubscription._add (dart:async/stream_transformers.dart:63:11)
#13 _EventSinkWrapper.add (dart:async/stream_transformers.dart:13:11)
#14 _StringAdapterSink.add (dart:convert/string_conversion.dart:228:11)
#15 _LineSplitterSink._addLines (dart:convert/line_splitter.dart:164:13)
#16 _LineSplitterSink.addSlice (dart:convert/line_splitter.dart:131:7)
#17 StringConversionSink.add (dart:convert/string_conversion.dart:39:5)
#18 _SinkTransformerStreamSubscription._handleData (dart:async/stream_transformers.dart:111:24)
#19 _RootZone.runUnaryGuarded (dart:async/zone.dart:1594:10)
#20 _BufferingStreamSubscription._sendData (dart:async/stream_impl.dart:339:11)
#21 _BufferingStreamSubscription._add (dart:async/stream_impl.dart:271:7)
#22 _SinkTransformerStreamSubscription._add (dart:async/stream_transformers.dart:63:11)
#23 _EventSinkWrapper.add (dart:async/stream_transformers.dart:13:11)
#24 _StringAdapterSink.add (dart:convert/string_conversion.dart:228:11)
#25 _StringAdapterSink.addSlice (dart:convert/string_conversion.dart:233:7)
#26 _Utf8ConversionSink.addSlice (dart:convert/string_conversion.dart:307:20)
#27 _Utf8ConversionSink.add (dart:convert/string_conversion.dart:300:5)
#28 _ConverterStreamEventSink.add (dart:convert/chunked_conversion.dart:69:18)
#29 _SinkTransformerStreamSubscription._handleData (dart:async/stream_transformers.dart:111:24)
#30 _RootZone.runUnaryGuarded (dart:async/zone.dart:1594:10)
#31 _BufferingStreamSubscription._sendData (dart:async/stream_impl.dart:339:11)
#32 _BufferingStreamSubscription._add (dart:async/stream_impl.dart:271:7)
#33 _SyncStreamControllerDispatch._sendData (dart:async/stream_controller.dart:784:19)
#34 _StreamController._add (dart:async/stream_controller.dart:658:7)
#35 _StreamController.add (dart:async/stream_controller.dart:606:5)
#36 _Socket._onData (dart:io-patch/socket_patch.dart:2447:41)
#37 _RootZone.runUnaryGuarded (dart:async/zone.dart:1594:10)
#38 _BufferingStreamSubscription._sendData (dart:async/stream_impl.dart:339:11)
#39 _BufferingStreamSubscription._add (dart:async/stream_impl.dart:271:7)
#40 _SyncStreamControllerDispatch._sendData (dart:async/stream_controller.dart:784:19)
#41 _StreamController._add (dart:async/stream_controller.dart:658:7)
#42 _StreamController.add (dart:async/stream_controller.dart:606:5)
#43 new _RawSocket. (dart:io-patch/socket_patch.dart:1936:33)
#44 _NativeSocket.issueReadEvent.issue (dart:io-patch/socket_patch.dart:1379:14)
#45 _microtaskLoop (dart:async/schedule_microtask.dart:40:21)
#46 _startMicrotaskLoop (dart:async/schedule_microtask.dart:49:5)
#47 _runPendingImmediateCallback (dart:isolate-patch/isolate_patch.dart:123:13)
#48 _RawReceivePort._handleMessage (dart:isolate-patch/isolate_patch.dart:190:5)

3
the Dart compiler exited unexpectedly.

Flutter Version: 3.13.4
Hive version :2.2.3

Reproduce the compiler exit with Flutter 3.13.4 and Hive 2.2.3, then trace the stack from package:front_end/src/api_prototype/expression_compilation_tools.dart, especially parseDefinitionTypes and createDefinitionsWithTypes, into IncrementalCompiler.compileExpression. Done means the same box-reading error is handled without the Dart compiler exiting unexpectedly, with regression coverage for the reported case.

Written by the indexing model from the issue text.