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isolate service example crashes #5814
Description
When running the services/isolate.dart sample app on a Nexus 5X and clicking Start button it immediately crashes with the following output:
~/projects/flutter/examples/layers$ flutter run -t services/isolate.dart
Running 'pub get' in layers... 6.2s
Building APK in debug mode (android-arm)...
Warning: signing the APK using the debug keystore.
Built build/app.apk (8.7MB).
Running services/isolate.dart on Nexus 5X...
--------- beginning of main
Observatory listening on http://127.0.0.1:8102
Diagnostic server listening on http://127.0.0.1:8103
Application running.
Connected to view '_flutterView/0xf48196c0'.
Type "h" or F1 for help, "r" or F5 to restart the app, and "q", F10, or ctrl-c to quit.
Type "w" to print the widget hierarchy of the app, and "t" for the render tree.
E/DartVM : ../../dart/runtime/vm/object.h: 5455: error: Handle check failed: saw UnhandledException expected Instance
E/DartVM : Dumping native stack trace for thread 3010
E/DartVM : [0xdae75f5d] Unknown symbol
E/DartVM : -- End of DumpStackTrace
--------- beginning of crash
W/ActivityManager: Force finishing activity io.flutter.examples.Layers/org.domokit.sky.shell.SkyActivity
W/ActivityManager: Force finishing activity io.flutter.examples.Layers/org.domokit.sky.shell.SkyActivity
W/ActivityManager: Duplicate finish request for ActivityRecord{7d0b96c u0 io.flutter.examples.Layers/org.domokit.sky.shell.SkyActivity t59 f}
Application finished.
Just in case, here is my flutter doctor output:
$ flutter doctor
[✓] Flutter (on Linux, channel master)
• Flutter at /home/lex/projects/flutter
• Framework revision b298bdc8c4 (26 hours ago), 2016-09-09 16:55:55
• Engine revision a55fa1efb9
• Tools Dart version 1.20.0-dev.1.0
[✓] Android toolchain - develop for Android devices (Android SDK 19.1.0)
• Android SDK at /home/lex/projects/Android/Sdk
• Platform android-19, build-tools 19.1.0
• OpenJDK Runtime Environment (build 1.8.0_91-8u91-b14-3ubuntu1~16.04.1-b14)
[✓] Atom - a lightweight development environment for Flutter
• flutter plugin version 0.2.4
• dartlang plugin version 0.6.37
[✓] Connected devices
• Nexus 5X • 00dd4847616ed5cd • android-arm
Activity
eseidelGoogle commentedon Sep 11, 2016
@johnmccutchan @jason-simmons
I don't think our current tests cover isolates. Dart has a ton of VM tests which do cover isolates and we could wire up: https://github.com/dart-lang/sdk/tree/master/tests but don't yet.
jason-simmons commentedon Sep 12, 2016
Confirmed. Looks like this is still happening if I roll forward to the tip-of-tree Dart VM.
It's sensitive to the type of argument being passed to Isolate.spawn(). If I change the code to call Isolate.spawn(_calculate, null) instead of Isolate.spawn(_calculate, message), then it works.
jason-simmons commentedon Sep 12, 2016
Native stack trace for the assert:
dart::DynamicAssertionHelper::Fail(char const_, ...)
dart::Instance::CheckedHandle(dart::Zone_, dart::RawObject*)
DRT_HelperTypeCheck
dart::DRT_TypeCheck(dart::NativeArguments)
unknown
Message from the UnhandledException:
Invalid argument(s): Invalid object found in message.
null expected Instance
Dumping native stack trace for thread a84
[0xa3f42515] Unknown symbol
-- End of DumpStackTrace
Call FinalizeLoading during initialization of secondary isolates
rmacnak-google commentedon Sep 13, 2016
flutter-team-archive/engine@cd333e6
a-siva commentedon Sep 14, 2016
Can this issue be closed with the fix that Ryan and Jason worked on?
a-siva commentedon Sep 14, 2016
Ignore the comment.
Roll engine to 95e91e3
Roll engine to 95e91e3 (#19716)
github-actions commentedon Aug 15, 2021
This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of
flutter doctor -vand a minimal reproduction of the issue.