Flutter application crashes on iOS 15

[FredJul]

After upgrading XCode to the very recent version 13.0, our flutter app crashes when doing a box.get(id) with an exception : ArgumentError (Invalid argument(s): Failed to lookup symbol (dlsym(RTLD_DEFAULT, memcpy): symbol not found))

Basic info (please complete the following information):

• ObjectBox version: 1.2.0
• Flutter/Dart SDK:
  Flutter 2.5.1 • channel stable • https://github.com/flutter/flutter.git
  Framework • revision ffb2ecea52 (5 days ago) • 2021-09-17 15:26:33 -0400
  Engine • revision b3af
• Null-safety enabled: yes
• Reproducibility: always
• OS: macOs BigSur
• Device/Emulator: iOS 15 simulator

Additionally, you can choose to provide more details, e.g. the output of:

• pub deps --no-dev

Dart SDK 2.14.2
Flutter SDK 2.5.1
sign 0.1.0+1
|-- auto_size_text 3.0.0-nullsafety.0
|   '-- flutter...
|-- collection 1.15.0
|-- cupertino_icons 1.0.3
|-- dartx 0.7.1
|   |-- characters...
|   |-- collection...
|   |-- crypto 3.0.1
|   |   |-- collection...
|   |   '-- typed_data...
|   |-- meta...
|   |-- path...
|   '-- time 2.0.0
|-- dio 4.0.0
|   |-- http_parser 4.0.0
|   |   |-- charcode 1.3.1
|   |   |-- collection...
|   |   |-- source_span 1.8.1
|   |   |   |-- collection...
|   |   |   |-- path...
|   |   |   '-- term_glyph 1.2.0
|   |   |-- string_scanner 1.1.0
|   |   |   |-- charcode...
|   |   |   '-- source_span...
|   |   '-- typed_data...
|   '-- path...
|-- flutter 0.0.0
|   |-- characters 1.1.0
|   |-- collection...
|   |-- meta 1.7.0
|   |-- sky_engine 0.0.99
|   |-- typed_data 1.3.0
|   |   '-- collection...
|   '-- vector_math 2.1.0
|-- flutter_form_builder 6.1.0+1
|   |-- collection...
|   |-- flutter...
|   |-- flutter_localizations...
|   '-- intl...
|-- flutter_localizations 0.0.0
|   |-- characters...
|   |-- clock 1.1.0
|   |-- collection...
|   |-- flutter...
|   |-- intl 0.17.0
|   |   |-- clock...
|   |   '-- path...
|   |-- meta...
|   |-- path 1.8.0
|   |-- typed_data...
|   '-- vector_math...
|-- flutter_riverpod 1.0.0-dev.7
|   |-- collection...
|   |-- flutter...
|   |-- meta...
|   |-- riverpod 1.0.0-dev.7
|   |   |-- collection...
|   |   |-- freezed_annotation...
|   |   |-- meta...
|   |   '-- state_notifier...
|   '-- state_notifier 0.7.1
|       '-- meta...
|-- flutter_svg 0.22.0
|   |-- flutter...
|   |-- meta...
|   |-- path_drawing 0.5.1
|   |   |-- flutter...
|   |   |-- meta...
|   |   |-- path_parsing 0.2.1
|   |   |   |-- meta...
|   |   |   '-- vector_math...
|   |   '-- vector_math...
|   |-- vector_math...
|   '-- xml 5.3.0
|       |-- collection...
|       |-- meta...
|       '-- petitparser 4.3.0
|           '-- meta...
|-- freezed_annotation 0.14.3
|   |-- collection...
|   |-- json_annotation 4.1.0
|   |   '-- meta...
|   '-- meta...
|-- gap 2.0.0
|   '-- flutter...
|-- logger 1.1.0
|-- native_pdf_view 4.2.0
|   |-- flutter...
|   |-- native_pdf_renderer 3.1.0
|   |   |-- device_info 2.0.2
|   |   |   |-- device_info_platform_interface 2.0.1
|   |   |   |   |-- flutter...
|   |   |   |   |-- meta...
|   |   |   |   '-- plugin_platform_interface...
|   |   |   '-- flutter...
|   |   |-- extension 0.2.0
|   |   |-- flutter...
|   |   |-- flutter_web_plugins 0.0.0
|   |   |   |-- characters...
|   |   |   |-- collection...
|   |   |   |-- flutter...
|   |   |   |-- js...
|   |   |   |-- meta...
|   |   |   |-- typed_data...
|   |   |   '-- vector_math...
|   |   |-- image 3.0.5
|   |   |   |-- archive 3.1.2
|   |   |   |   |-- crypto...
|   |   |   |   '-- path...
|   |   |   |-- meta...
|   |   |   '-- xml...
|   |   |-- js 0.6.3
|   |   |-- meta...
|   |   |-- synchronized...
|   |   '-- uuid 3.0.4
|   |       '-- crypto...
|   |-- photo_view...
|   '-- synchronized 3.0.0
|-- objectbox 1.2.0
|   |-- collection...
|   |-- ffi 1.1.2
|   |-- meta...
|   '-- path...
|-- objectbox_flutter_libs 1.2.0
|   |-- objectbox...
|   '-- path_provider...
|-- path_provider 2.0.5
|   |-- flutter...
|   |-- path_provider_linux 2.1.0
|   |   |-- flutter...
|   |   |-- path...
|   |   |-- path_provider_platform_interface...
|   |   '-- xdg_directories 0.2.0
|   |       |-- meta...
|   |       |-- path...
|   |       '-- process 4.2.3
|   |           |-- file 6.1.2
|   |           |   |-- meta...
|   |           |   '-- path...
|   |           |-- path...
|   |           '-- platform...
|   |-- path_provider_macos 2.0.2
|   |   '-- flutter...
|   |-- path_provider_platform_interface 2.0.1
|   |   |-- flutter...
|   |   |-- meta...
|   |   |-- platform 3.0.2
|   |   '-- plugin_platform_interface 2.0.1
|   |       '-- meta...
|   '-- path_provider_windows 2.0.3
|       |-- ffi...
|       |-- flutter...
|       |-- meta...
|       |-- path...
|       |-- path_provider_platform_interface...
|       '-- win32 2.2.9
|           '-- ffi...
|-- pdftron_plugin 0.0.1
|   |-- dartx...
|   '-- flutter...
|-- photo_view 0.12.0
|   '-- flutter...
'-- supercharged 2.1.1
    |-- flutter...
    '-- supercharged_dart 2.1.1

• flutter doctor -v

[✓] Flutter (Channel stable, 2.5.1, on macOS 11.6 20G165 darwin-x64, locale fr-FR)
    • Flutter version 2.5.1 at /Users/f.julian/Documents/flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision ffb2ecea52 (5 days ago), 2021-09-17 15:26:33 -0400
    • Engine revision b3af521a05
    • Dart version 2.14.2

[!] Android toolchain - develop for Android devices (Android SDK version 30.0.3)
    • Android SDK at /Users/f.julian/Library/Android/sdk
    ✗ cmdline-tools component is missing
      Run `path/to/sdkmanager --install "cmdline-tools;latest"`
      See https://developer.android.com/studio/command-line for more details.
    ✗ Android license status unknown.
      Run `flutter doctor --android-licenses` to accept the SDK licenses.
      See https://flutter.dev/docs/get-started/install/macos#android-setup for more details.

[✓] Xcode - develop for iOS and macOS
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 13.0, Build version 13A233
    • CocoaPods version 1.11.2

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 2020.3)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/6351-dart
    • Java version OpenJDK Runtime Environment (build 11.0.10+0-b96-7281165)

[✓] VS Code (version 1.60.1)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.26.0

[✓] Connected device (3 available)
    • iPhone 13 (mobile) • A8BA3F65-5DE2-4CBF-BD80-D7006EC695D1 • ios            • com.apple.CoreSimulator.SimRuntime.iOS-15-0 (simulator)
    • macOS (desktop)    • macos                                • darwin-x64     • macOS 11.6 20G165 darwin-x64
    • Chrome (web)       • chrome                               • web-javascript • Google Chrome 93.0.4577.82

! Doctor found issues in 1 category.

Steps to reproduce

1. Put '...'
2. Make changes to '....'
3. See error

Expected behavior

A clear and concise description of what you expected to happen.

Code

If applicable, add code to help explain your problem.

• Include your pubspec.yaml.
• Include affected entity classes.
• Please remove any unnecessary or confidential parts.
• At best, link to or attach a project with a failing test.

Logs, stack traces

ArgumentError (Invalid argument(s): Failed to lookup symbol (dlsym(RTLD_DEFAULT, memcpy): symbol not found))

Stack traces:

#0      DynamicLibrary.lookup (dart:ffi-patch/ffi_dynamic_library_patch.dart:31:29)
#1      memcpy (package:objectbox/src/native/bindings/nativemem.dart)
#2      memcpy (package:objectbox/src/native/bindings/nativemem.dart)
#3      ReaderWithCBuffer.access (package:objectbox/src/native/bindings/flatbuffers.dart:128:7)
#4      CursorHelper.readData (package:objectbox/src/native/bindings/helpers.dart:111:36)
#5      CursorHelper.get (package:objectbox/src/native/bindings/helpers.dart:130:41)
#6      Box.get.<anonymous closure> (package:objectbox/src/native/box.dart:229:67)
#7      Store._runInTransaction (package:objectbox/src/native/store.dart:305:24)
#8      InternalStoreAccess.runInTransaction (package:objectbox/src/native/store.dart:365:13)
#9      Box.get (package:objectbox/src/native/box.dart:228:41)
#10     Dao.getById (package:sign/services/dao.dart:29:29)
#11     Dao.getByIdOrDefault (package:sign/services/dao.dart:33:12)
#12     Dao.getFirstOrDefault (package:sign/services/dao.dart:28:46)
#13     MyApp.build.<anonymous closure> (package:sign/main.dart:74:50)
#14     Consumer.build (package:flutter_riverpod/src/consumer.dart:269:20)
#15     _ConsumerState.build (package:flutter_riverpod/src/consumer.dart:371:19)
#16     StatefulElement.build (package:flutter/src/widgets/framework.dart:4782:27)
#17     ConsumerStatefulElement.build (package:flutter_riverpod/src/consumer.dart:430:20)
#18     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4665:15)
#19     StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:4840:11)
#20     Element.rebuild (package:flutter/src/widgets/framework.dart:4355:5)
#21     ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4643:5)
#22     StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:4831:11)
#23     ComponentElement.mount (package:flutter/src/widgets/framework.dart:4638:5)
#24     Element.inflateWidget (package:flutter/src/widgets/framework.dart:3673:14)
#25     Element.updateChild (package:flutter/src/widgets/framework.dart:3425:18)
#26     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4690:16)
#27     StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:4840:11)
#28     Element.rebuild (package:flutter/src/widgets/framework.dart:4355:5)
#29     ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4643:5)
#30     StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:4831:11)
#31     ComponentElement.mount (package:flutter/src/widgets/framework.dart:4638:5)
#32     Element.inflateWidget (package:flutter/src/widgets/framework.dart:3673:14)
#33     Element.updateChild (package:flutter/src/widgets/framework.dart:3425:18)
#34     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4690:16)
#35     Element.rebuild (package:flutter/src/widgets/framework.dart:4355:5)
#36     ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4643:5)
#37     ComponentElement.mount (package:flutter/src/widgets/framework.dart:4638:5)
#38     _UncontrolledProviderScopeElement.mount (package:flutter_riverpod/src/framework.dart:252:11)
#39     Element.inflateWidget (package:flutter/src/widgets/framework.dart:3673:14)
#40     Element.updateChild (package:flutter/src/widgets/framework.dart:3425:18)
#41     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4690:16)
#42     StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:4840:11)
#43     Element.rebuild (package:flutter/src/widgets/framework.dart:4355:5)
#44     ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4643:5)
#45     StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:4831:11)
#46     ComponentElement.mount (package:flutter/src/widgets/framework.dart:4638:5)
#47     Element.inflateWidget (package:flutter/src/widgets/framework.dart:3673:14)
#48     Element.updateChild (package:flutter/src/widgets/framework.dart:3425:18)
#49     RenderObjectToWidgetElement._rebuild (package:flutter/src/widgets/binding.dart:1198:16)
#50     RenderObjectToWidgetElement.mount (package:flutter/src/widgets/binding.dart:1167:5)
#51     RenderObjectToWidgetAdapter.attachToRenderTree.<anonymous closure> (package:flutter/src/widgets/binding.dart:1112:18)
#52     BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2573:19)
#53     RenderObjectToWidgetAdapter.attachToRenderTree (package:flutter/src/widgets/binding.dart:1111:13)
#54     WidgetsBinding.attachRootWidget (package:flutter/src/widgets/binding.dart:944:7)
#55     WidgetsBinding.scheduleAttachRootWidget.<anonymous closure> (package:flutter/src/widgets/binding.dart:924:7)
#56     _rootRun (dart:async/zone.dart:1420:47)
#57     _CustomZone.run (dart:async/zone.dart:1328:19)
#58     _CustomZone.runGuarded (dart:async/zone.dart:1236:7)
#59     _CustomZone.bindCallbackGuarded.<anonymous closure> (dart:async/zone.dart:1276:23)
#60     _rootRun (dart:async/zone.dart:1428:13)
#61     _CustomZone.run (dart:async/zone.dart:1328:19)
#62     _CustomZone.bindCallback.<anonymous closure> (dart:async/zone.dart:1260:23)
#63     Timer._createTimer.<anonymous closure> (dart:async-patch/timer_patch.dart:18:15)
#64     _Timer._runTimers (dart:isolate-patch/timer_impl.dart:395:19)
#65     _Timer._handleMessage (dart:isolate-patch/timer_impl.dart:426:5)
#66     _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:184:12)

---

update: formatting

[ebadta81]

I have the same problem. This is an IOS 15 vs objectbox incompatibility issue. If I change the simulator version to IOS 14.3, everything is fine.

[FredJul]

@ebadta81 you're totally right! I downloaded the iOS 14 simulator and yes, it's working fine. I just changed the title, thanks for that info.

[vaind]

I can confirm this is reproducible with the example in the repo by wrapping q.find() with try-catch and printing the error...

Still trying to figure out an alternative without sacrificing performance. I've also opened an SO question https://stackoverflow.com/questions/69324507/ios-15-sdk-memcpy-not-exported

[greenrobot]

So far no reaction on SO; maybe also try the Dart bug tracker? Are stdlib functions treated differently (e.g. less calling overhead) than "our" code? If not, we could provide our own C wrapper for memcpy, I guess?

[Nevoo]

I've also encountered a similar issue in our application, but this only seems to be a problem on iOS Simulators. So far, there have been no issues reported on real devices.

[vaind]

I've created a Flutter GH issue flutter/flutter#90896

[vaind]

we could provide our own C wrapper for memcpy

Yes, that's an option I've had in mind as a "last resort" (because it requires more symbols just for dart/flutter). There should be no performance degradation.

[greenrobot]

It seems to be a confirmed issue with Flutter itself; can someone confirm it's fixed in the Flutter beta channel? See flutter/flutter#90896 (comment)

[Jax0312]

Issue doesn't seem to be fixed yet on Flutter beta channel 2.6.0

Stack Trace:

[VERBOSE-2:ui_dart_state.cc(209)] Unhandled Exception: Invalid argument(s): Failed to lookup symbol 'memcpy': dlsym(RTLD_DEFAULT, memcpy): symbol not found
#0      DynamicLibrary.lookup (dart:ffi-patch/ffi_dynamic_library_patch.dart:31:29)
#1      memcpy (package:objectbox/src/native/bindings/nativemem.dart)
#2      memcpy (package:objectbox/src/native/bindings/nativemem.dart)
#3      ReaderWithCBuffer.access (package:objectbox/src/native/bindings/flatbuffers.dart:128:7)
#4      CursorHelper.readData (package:objectbox/src/native/bindings/helpers.dart:111:36)
#5      Box.getAll.<anonymous closure> (package:objectbox/src/native/box.dart:258:58)
#6      Store._runInTransaction (package:objectbox/src/native/store.dart:305:24)
#7      InternalStoreAccess.runInTransaction (package:objectbox/src/native/store.dart:365:13)
#8      Box.getAll (package:objectbox/src/native/box.dart:250:43)

[seidoragutierrez]

I have the same problem when making a query with conditions. The information I have is summarized in the following paragraphs.

Framework • revision 93da78f896 (2 days ago) • 2021-10-16 07:18:02 -0400

Engine • revision faa45f497f

Tools • Dart 2.15.0 (build 2.15.0-226.0.dev)


Running flutter doctor...

Doctor summary (to see all details, run flutter doctor -v):

[✓] Flutter (Channel master, 2.6.0-12.0.pre.379, on macOS 11.6 20G165 darwin-x64, locale es)

[!] Android toolchain - develop for Android devices (Android SDK version 31.0.0)

    ✗ cmdline-tools component is missing

      Run `path/to/sdkmanager --install "cmdline-tools;latest"`

      See https://developer.android.com/studio/command-line for more details.

    ✗ Android license status unknown.

      Run `flutter doctor --android-licenses` to accept the SDK licenses.

      See https://flutter.dev/docs/get-started/install/macos#android-setup for more details.

[✓] Xcode - develop for iOS and macOS (Xcode 13.0)

[✓] Chrome - develop for the web

[✓] Android Studio (version 2020.3)

[✓] Connected device (2 available)


Invalid argument(s): Failed to lookup symbol 'memcpy': dlsym(RTLD_DEFAULT, memcpy): symbol not found.

flutter: #0      ObjectCollectorError.throwIfError (package:objectbox/src/native/bindings/data_visitor.dart:56:24)

#1      Query.find (package:objectbox/src/native/query/query.dart:807:18)

#2      UsuarioDataSource.getFiltered (package:cetursa/data/datasources/local/database/usuario_datasource.dart:37:36)

#3      UsuarioRepo.validateUser (package:cetursa/domain/repositories/usuario_repository.dart:32:25)

#4      LoginScreen.onPressedAcceder (package:cetursa/presentation/screens/login/login_screen.dart:162:18)

#5      LoginScreen._buildSignInButton.<anonymous closure> (package:cetursa/presentation/screens/login/login_screen.dart:149:11)

#6      _InkResponseState._handleTap (package:flutter/src/material/ink_well.dart:989:21)

#7      GestureRecognizer.invokeCallback (package:flutter/src/gestures/recognizer.dart:198:24)

#8      TapGestureRecognizer.handleTapUp (package:flutter/src/gestures/tap.dart:608:11)

#9      BaseTapGestureRecognizer._checkUp (package:flutter/src/gestures/tap.dart:296:5)

[greenrobot-team]

Update: not fixed by latest Flutter versions flutter/flutter#90896 (comment)