Crash in PointerEventConverter.expand #114914
Description
Internal bug: b/257770390
We're seeing a crash with frequency up to 300 per day for application Huggsy on Web. It only started recently in October and the first candidate it's seen in was cut at a CL from 28 September (see internal bug for more context).
There is no repro, but given the relatively high frequency and stack trace, perhaps it might be worth investigating?
Error text from AppLog (you can find this in the internal crash reporting system): Error: can't access dead object
Deobfuscated stack trace:
[Mapped Dart].Offset./(third_party/dart_lang/flutter/flutter_web_sdk/lib/ui/geometry.dart:55)
[Mapped Dart].PointerEventConverter.expand.<anonymous>(third_party/dart/flutter/lib/src/gestures/converter.dart:253)
[Mapped Dart].MappedIterator.moveNext(third_party/dart_lang/v2/sdk/lib/internal/iterable.dart:392)
[Mapped Dart].ListQueue.addAll(third_party/dart_lang/v2/sdk/lib/collection/queue.dart:748)
[Mapped Dart].GestureBinding._handlePointerDataPacket(third_party/dart/flutter/lib/src/gestures/binding.dart:293)
[Mapped Dart].Closure.cspForwardCall(third_party/dart_lang/v2/sdk/lib/_internal/js_runtime/lib/js_helper.dart:2111)
[Mapped Dart]._rootRunUnary(third_party/dart_lang/v2/sdk/lib/async/zone.dart:1414)
[Mapped Dart]._rootRunUnary[function-entry$5](third_party/dart_lang/v2/sdk/lib/async/zone.dart:1404)
[Mapped Dart]._CustomZone.runUnary(third_party/dart_lang/v2/sdk/lib/async/zone.dart:1306)
[Mapped Dart]._CustomZone.runUnaryGuarded(third_party/dart_lang/v2/sdk/lib/async/zone.dart:1216)
[Mapped Dart].invoke1(third_party/dart_lang/flutter/flutter_web_sdk/lib/_engine/engine/platform_dispatcher.dart:1177)
[Mapped Dart].invokeOnPointerDataPacket(third_party/dart_lang/flutter/flutter_web_sdk/lib/_engine/engine/platform_dispatcher.dart:243)
[Mapped Dart].PointerBinding._onPointerData(third_party/dart_lang/flutter/flutter_web_sdk/lib/_engine/engine/pointer_binding.dart:147)
[Mapped Dart].Closure.cspForwardCall(third_party/dart_lang/v2/sdk/lib/_internal/js_runtime/lib/js_helper.dart:2111)
[Mapped Dart]._WheelEventListenerMixin._handleWheelEvent(third_party/dart_lang/flutter/flutter_web_sdk/lib/_engine/engine/pointer_binding.dart:371)
[Mapped Dart]._PointerAdapter.setup.<anonymous>(third_party/dart_lang/flutter/flutter_web_sdk/lib/_engine/engine/pointer_binding.dart:671)
[Mapped Dart]._WheelEventListenerMixin._addWheelEventListener.<anonymous>(third_party/dart_lang/flutter/flutter_web_sdk/lib/_engine/engine/pointer_binding.dart:361)
[Mapped Dart]._Listener.registerNative.<anonymous>(third_party/dart_lang/flutter/flutter_web_sdk/lib/_engine/engine/pointer_binding.dart:203)
[Mapped Dart].Primitives.applyFunction(third_party/dart_lang/v2/sdk/lib/_internal/js_runtime/lib/js_helper.dart:849)
[Mapped Dart].Function.apply(third_party/dart_lang/v2/sdk/lib/_internal/js_runtime/lib/core_patch.dart:86)
[Mapped Dart]._callDartFunctionFast(third_party/dart_lang/v2/sdk/lib/_internal/js_runtime/lib/js_patch.dart:542)
[Mapped Dart]._convertDartFunctionFast(third_party/dart_lang/v2/sdk/lib/_internal/js_runtime/lib/js_patch.dart:520)
Maybe the devicePixelRation is zero, thought that seems inconsistent with the error message: