Accessibility resulted crash in iOS still reported in flutter v1.12.13.hotfix8 #54366
Description
We received several crash reports about accessibility when using flutter v1.12.13.hotfix8.
The callstack is given below:
ardware Model: iPhone8,1
Code Type: ARM-64
Parent Process: ??? [1]
Date/Time: 2020-03-14 07:01:59 +0000
OS Version: iPhone OS 9.0.2 (13A452)
Report Version: 104
Exception Type: SIGSEGV
Exception Codes: SEGV_ACCERR at 0x0
Triggered by Thread: 0
0x0000000102f57eb4
-[SemanticsObjectContainer initWithSemanticsObject:bridge:] (in Flutter) + 32
0x0000000102f57034
-[SemanticsObject accessibilityContainer] (in Flutter) + 208
0x0000000102f555a4
-[SemanticsObject initWithBridge:uid:] (in Flutter) + 64
0x0000000102f58a84
-[FlutterSemanticsObject initWithBridge:uid:] (in Flutter) + 84
0x0000000102f598c4
flutter::AccessibilityBridge::GetOrCreateObject(int, std::__1::unordered_map<int, flutter::SemanticsNode, std::__1::hash<int>, std::__1::equal_to<int>, std::__1::allocator<std::__1::pair<int const, flutter::SemanticsNode> > >&) (in Flutter) + 416
0x0000000102f5fc88
flutter::PlatformViewIOS::UpdateSemantics(std::__1::unordered_map<int, flutter::SemanticsNode, std::__1::hash<int>, std::__1::equal_to<int>, std::__1::allocator<std::__1::pair<int const, flutter::SemanticsNode> > >, std::__1::unordered_map<int, flutter::CustomAccessibilityAction, std::__1::hash<int>, std::__1::equal_to<int>, std::__1::allocator<std::__1::pair<int const, flutter::CustomAccessibilityAction> > >) (in Flutter) + 384
0x0000000102fba950
std::__1::__function::__func<flutter::Shell::OnEngineUpdateSemantics(std::__1::unordered_map<int, flutter::SemanticsNode, std::__1::hash<int>, std::__1::equal_to<int>, std::__1::allocator<std::__1::pair<int const, flutter::SemanticsNode> > >, std::__1::unordered_map<int, flutter::CustomAccessibilityAction, std::__1::hash<int>, std::__1::equal_to<int>, std::__1::allocator<std::__1::pair<int const, flutter::CustomAccessibilityAction> > >)::$_32, std::__1::allocator<flutter::Shell::OnEngineUpdateSemantics(std::__1::unordered_map<int, flutter::SemanticsNode, std::__1::hash<int>, std::__1::equal_to<int>, std::__1::allocator<std::__1::pair<int const, flutter::SemanticsNode> > >, std::__1::unordered_map<int, flutter::CustomAccessibilityAction, std::__1::hash<int>, std::__1::equal_to<int>, std::__1::allocator<std::__1::pair<int const, flutter::CustomAccessibilityAction> > >)::$_32>, void ()>::operator()() (in Flutter) + 88
0x0000000102f6e644
fml::MessageLoopImpl::FlushTasks(fml::FlushType) (in Flutter) + 1908
0x0000000102f70a54
fml::MessageLoopDarwin::OnTimerFire(__CFRunLoopTimer*, fml::MessageLoopDarwin*) (in Flutter) + 32kylewong@KyleWongdeMacBook-Pro flutter_gallery % /Users/kylewong/Codes/Flutter/alibaba-flutter/flutter/bin/flutter doctor -v
[✓] Flutter (Channel unknown, v1.12.13+hotfix.8, on Mac OS X 10.15.4 19E287, locale en-CN)
• Flutter version 1.12.13+hotfix.8 at /Users/kylewong/Codes/Flutter/alibaba-flutter/flutter
• Framework revision 0b8abb4724 (8 weeks ago), 2020-02-11 11:44:36 -0800
• Engine revision e1e6ced81d
• Dart version 2.7.0
[✓] Android toolchain - develop for Android devices (Android SDK version 29.0.2)
• Android SDK at /Users/kylewong/Library/Android/sdk
• Android NDK location not configured (optional; useful for native profiling support)
• Platform android-R, build-tools 29.0.2
• Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
• Java version OpenJDK Runtime Environment (build 1.8.0_212-release-1586-b4-5784211)
• All Android licenses accepted.
[!] Xcode - develop for iOS and macOS (Xcode 11.4)
• Xcode at /Applications/Xcode.app/Contents/Developer
• Xcode 11.4, Build version 11E146
! Unknown CocoaPods version installed.
Flutter is unable to determine the installed CocoaPods's version.
Ensure that the output of 'pod --version' contains only digits and . to be recognized by Flutter.
To upgrade:
sudo gem install cocoapods
[✓] Android Studio (version 3.6)
• Android Studio at /Applications/Android Studio.app/Contents
• Flutter plugin version 45.0.1
• Dart plugin version 192.7761
• Java version OpenJDK Runtime Environment (build 1.8.0_212-release-1586-b4-5784211)
[✓] VS Code (version 1.42.1)
• VS Code at /Applications/Visual Studio Code.app/Contents
• Flutter extension version 3.8.1
[!] Connected device
! No devices available
! Doctor found issues in 2 categories.