Hover 0.44.0 segfault on `hover run` in Linux

[JanezStupar]

hover doctor -v                                                        
13:59:12 doctor.go:39: hover: Hover version v0.44.0 running on linux
13:59:12 doctor.go:41: hover: Sharing flutter version
Flutter 1.23.0-18.1.pre • channel beta • https://github.com/flutter/flutter.git
Framework • revision 198df796aa (5 days ago) • 2020-10-15 12:04:33 -0700
Engine • revision 1d12d82d9c
Tools • Dart 2.11.0 (build 2.11.0-213.1.beta)
13:59:16 doctor.go:51: hover: Flutter engine commit: https://github.com/flutter/engine/commit/1d12d82d9cb54876f58044aa52198d53ec841c3d
13:59:17 doctor.go:63: hover: Finding out the C compiler version
gcc (GCC) 10.2.0
Copyright (C) 2020 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

13:59:17 doctor.go:70: hover: Sharing the content of go.mod
module trackself/go

go 1.14

require (
        github.com/JanezStupar/flutter_systray/go v0.3.1
        github.com/Xuanwo/go-locale v1.0.0 // indirect
        github.com/getlantern/golog v0.0.0-20200929154820-62107891371a // indirect
        github.com/getlantern/ops v0.0.0-20200403153110-8476b16edcd6 // indirect
        github.com/getlantern/systray v1.0.5 // indirect
        github.com/go-flutter-desktop/go-flutter v0.42.0
        github.com/go-flutter-desktop/plugins/path_provider v0.4.0
        github.com/go-gl/glfw/v3.3/glfw v0.0.0-20200707082815-5321531c36a2 // indirect
        github.com/miguelpruivo/flutter_file_picker/go v0.0.0-20200913011135-405fd7f97798
        github.com/pkg/errors v0.9.1
        github.com/shurcooL/trayhost v0.0.0-20181020202213-114974ef9e16 // indirect
        golang.org/x/sys v0.0.0-20201018230417-eeed37f84f13 // indirect
        gopkg.in/yaml.v2 v2.2.4 // indirect
)
13:59:17 doctor.go:84: hover: Sharing the content of hover.yaml
application-name: Track.Self
executable-name: trackself
package-name: trackself
license: UNLICENSED
target: lib/main_desktop.dart
branch: ""
cache-path: ""
opengl: ""
engine-version: ""
13:59:17 doctor.go:93: hover: Sharing the content of go/cmd
go/cmd/import-file_picker-plugin.go     go/cmd/import-flutter_systray-plugin.go go/cmd/import-path_provider-plugin.go   go/cmd/main.go  go/cmd/options.go

Output of hover run. Note that the same process works fine with hover 0.43.0

hover run                 
hover: Downloading engine for platform linux-debug_unopt at version 1d12d82d9cb54876f58044aa52198d53ec841c3d...                                               
Download completed in 205.28s                                           
hover: Cleaning the build directory                                     
hover: Bundling flutter app                                             
Running "flutter pub get" in desktopapp...                          1.4s                                                                                      
Font subsetting is not supported in debug mode. The --tree-shake-icons flag will be ignored.                                                                  
hover: Compiling 'go-flutter' and plugins
# github.com/shurcooL/trayhost                                
In file included from /usr/include/gtk-2.0/gtk/gtkobject.h:37,
                 from /usr/include/gtk-2.0/gtk/gtkwidget.h:36,   
                 from /usr/include/gtk-2.0/gtk/gtkcontainer.h:35,
                 from /usr/include/gtk-2.0/gtk/gtkbin.h:35,   
                 from /usr/include/gtk-2.0/gtk/gtkwindow.h:36,
                 from /usr/include/gtk-2.0/gtk/gtkdialog.h:35,     
                 from /usr/include/gtk-2.0/gtk/gtkaboutdialog.h:32,
                 from /usr/include/gtk-2.0/gtk/gtk.h:33,                                                                                                      
                 from /home/janez/go/pkg/mod/github.com/shurcoo!l/trayhost@v0.0.0-20181020202213-114974ef9e16/platform/linux/tray.c:7,
                 from /home/janez/go/pkg/mod/github.com/shurcoo!l/trayhost@v0.0.0-20181020202213-114974ef9e16/platform/platform.h:8,
                 from /home/janez/go/pkg/mod/github.com/shurcoo!l/trayhost@v0.0.0-20181020202213-114974ef9e16/trayhost.go:20:
/usr/include/gtk-2.0/gtk/gtktypeutils.h:236:1: warning: ‘GTypeDebugFlags’ is deprecated [-Wdeprecated-declarations]                                           
  236 | void            gtk_type_init   (GTypeDebugFlags    debug_flags);
      | ^~~~                                                     
In file included from /usr/include/glib-2.0/gobject/gobject.h:24, 
                 from /usr/include/glib-2.0/gobject/gbinding.h:29,
                 from /usr/include/glib-2.0/glib-object.h:22, 
                 from /usr/include/glib-2.0/gio/gioenums.h:28,
                 from /usr/include/glib-2.0/gio/giotypes.h:28,
                 from /usr/include/glib-2.0/gio/gio.h:26,               
                 from /usr/include/gtk-2.0/gdk/gdkapplaunchcontext.h:30,
                 from /usr/include/gtk-2.0/gdk/gdk.h:32,
                 from /usr/include/gtk-2.0/gtk/gtk.h:32,                                                                                                      
                 from /home/janez/go/pkg/mod/github.com/shurcoo!l/trayhost@v0.0.0-20181020202213-114974ef9e16/platform/linux/tray.c:7,
                 from /home/janez/go/pkg/mod/github.com/shurcoo!l/trayhost@v0.0.0-20181020202213-114974ef9e16/platform/platform.h:8,
                 from /home/janez/go/pkg/mod/github.com/shurcoo!l/trayhost@v0.0.0-20181020202213-114974ef9e16/trayhost.go:20:                                 
/usr/include/glib-2.0/gobject/gtype.h:679:1: note: declared here
  679 | {
      | ^                                                       
In file included from /usr/include/gtk-2.0/gtk/gtktoolitem.h:31,  
                 from /usr/include/gtk-2.0/gtk/gtktoolbutton.h:30,    
                 from /usr/include/gtk-2.0/gtk/gtkmenutoolbutton.h:30,
                 from /usr/include/gtk-2.0/gtk/gtk.h:126,                                                                                                     
                 from /home/janez/go/pkg/mod/github.com/shurcoo!l/trayhost@v0.0.0-20181020202213-114974ef9e16/platform/linux/tray.c:7,
                 from /home/janez/go/pkg/mod/github.com/shurcoo!l/trayhost@v0.0.0-20181020202213-114974ef9e16/platform/platform.h:8,
                 from /home/janez/go/pkg/mod/github.com/shurcoo!l/trayhost@v0.0.0-20181020202213-114974ef9e16/trayhost.go:20:      
/usr/include/gtk-2.0/gtk/gtktooltips.h:73:3: warning: ‘GTimeVal’ is deprecated: Use 'GDateTime' instead [-Wdeprecated-declarations]                           
   73 |   GTimeVal last_popdown;
      |   ^~~~~~~~                                            
In file included from /usr/include/glib-2.0/glib/galloca.h:32,
                 from /usr/include/glib-2.0/glib.h:30,            
                 from /usr/include/glib-2.0/gobject/gbinding.h:28,
                 from /usr/include/glib-2.0/glib-object.h:22, 
                 from /usr/include/glib-2.0/gio/gioenums.h:28,
                 from /usr/include/glib-2.0/gio/giotypes.h:28,
                 from /usr/include/glib-2.0/gio/gio.h:26,               
                 from /usr/include/gtk-2.0/gdk/gdkapplaunchcontext.h:30,
                 from /usr/include/gtk-2.0/gdk/gdk.h:32,
                 from /usr/include/gtk-2.0/gtk/gtk.h:32,                                                                                                      
                 from /home/janez/go/pkg/mod/github.com/shurcoo!l/trayhost@v0.0.0-20181020202213-114974ef9e16/platform/linux/tray.c:7,
                 from /home/janez/go/pkg/mod/github.com/shurcoo!l/trayhost@v0.0.0-20181020202213-114974ef9e16/platform/platform.h:8,
                 from /home/janez/go/pkg/mod/github.com/shurcoo!l/trayhost@v0.0.0-20181020202213-114974ef9e16/trayhost.go:20:                                 
/usr/include/glib-2.0/glib/gtypes.h:547:8: note: declared here
  547 | struct _GTimeVal
      |        ^~~~~~~~~                                                       
hover: Successfully compiled executable binary for linux  
hover: Build finished, starting app...                          
hover: Running trackself in debug_unopt mode                                                                                                                                                                                                                                                                                 
go-flutter: calculated pixelRatio limited to a minimum of 1.0. metrics: {"dpi":93.78461538461538,"monitorWidthMm":520,"monitorWidthSc":1920,"mscpi":93.78461538461538,"pixelRatio":0.5861538461538461,"ppsc":1,"windowWidthPx":360,"windowWidthSc":360}                                                                      
flutter: Observatory listening on http://127.0.0.1:50300/                
hover: Connecting hover to 'trackself' for hot reload                                                                                                         
hover: App 'trackself' exited with error: signal: segmentation fault (core dumped)                                                                            
Error connecting to the service protocol: failed to connect to http://127.0.0.1:50300/                                          

[provokateurin]

Please run flutter clean, rm go/build -rf and rm ~/.cache/hover/engine and try again. In my experience that fixes it

[provokateurin]

If that doesn't work please create a new flutter project and add hover to. Then try to run it

[JanezStupar]

I tried all your suggestions from this thread and previous ones. All leads to segfault.

I also created a new flutter project:

➜  tmp flutter create testsefgault
Creating project testsefgault...                   
  testsefgault/.metadata (created) 
  testsefgault/testsefgault.iml (created)                                                                                                                     
  testsefgault/.idea/runConfigurations/main_dart.xml (created)                                                                                                
  testsefgault/.idea/workspace.xml (created)                                                                                                                  
  testsefgault/.idea/modules.xml (created)                                  
  testsefgault/.idea/libraries/KotlinJavaRuntime.xml (created)  
  testsefgault/.idea/libraries/Dart_SDK.xml (created)
  testsefgault/android/gradle/wrapper/gradle-wrapper.properties (created)
  testsefgault/android/gradle.properties (created)
  testsefgault/android/.gitignore (created)                                                                                                                   
  testsefgault/android/app/src/profile/AndroidManifest.xml (created)                                                                                          
  testsefgault/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png (created)
  testsefgault/android/app/src/main/res/mipmap-xxhdpi/ic_launcher.png (created) 
  testsefgault/android/app/src/main/res/mipmap-xhdpi/ic_launcher.png (created)
  testsefgault/android/app/src/main/res/drawable/launch_background.xml (created)
  testsefgault/android/app/src/main/res/values/styles.xml (created)
  testsefgault/android/app/src/main/res/mipmap-hdpi/ic_launcher.png (created)
  testsefgault/android/app/src/main/res/mipmap-mdpi/ic_launcher.png (created)
  testsefgault/android/app/src/main/res/values-night/styles.xml (created)
  testsefgault/android/app/src/main/AndroidManifest.xml (created)
  testsefgault/android/app/src/debug/AndroidManifest.xml (created)
  testsefgault/android/settings.gradle (created)
  testsefgault/ios/Runner/Base.lproj/LaunchScreen.storyboard (created)                                                                                        
  testsefgault/ios/Runner/Base.lproj/Main.storyboard (created)                                                                                                
  testsefgault/ios/Runner/Info.plist (created)        
  testsefgault/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@1x.png (created)
  testsefgault/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@2x.png (created)
  testsefgault/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@3x.png (created)
  testsefgault/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@3x.png (created)        
  testsefgault/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-83.5x83.5@2x.png (created)
  testsefgault/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-60x60@2x.png (created)
  testsefgault/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-76x76@1x.png (created)          
  testsefgault/ios/Runner/Assets.xcassets/AppIcon.appiconset/Contents.json (created)
  testsefgault/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-60x60@3x.png (created)
  testsefgault/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@3x.png (created)
  testsefgault/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-76x76@2x.png (created)
  testsefgault/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@1x.png (created)
  testsefgault/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-1024x1024@1x.png (created)
  testsefgault/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@1x.png (created)
  testsefgault/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@2x.png (created)
  testsefgault/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@2x.png (created)
  testsefgault/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage.png (created)
  testsefgault/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@3x.png (created)
  testsefgault/ios/Runner/Assets.xcassets/LaunchImage.imageset/Contents.json (created)      
  testsefgault/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@2x.png (created)
  testsefgault/ios/Runner/Assets.xcassets/LaunchImage.imageset/README.md (created)
  testsefgault/ios/Flutter/Debug.xcconfig (created)
  testsefgault/ios/Flutter/Release.xcconfig (created)          
  testsefgault/ios/Flutter/AppFrameworkInfo.plist (created)
  testsefgault/ios/Runner.xcworkspace/contents.xcworkspacedata (created)
  testsefgault/ios/Runner.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings (created)
  testsefgault/ios/Runner.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist (created)
  testsefgault/ios/.gitignore (created)                   
  testsefgault/ios/Runner.xcodeproj/project.xcworkspace/contents.xcworkspacedata (created)
  testsefgault/ios/Runner.xcodeproj/project.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings (created)
  testsefgault/ios/Runner.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist (created)
  testsefgault/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme (created)
  testsefgault/lib/main.dart (created)
  testsefgault/pubspec.yaml (created)          
  testsefgault/android/testsefgault_android.iml (created)
  testsefgault/android/app/src/main/kotlin/com/example/testsefgault/MainActivity.kt (created)
  testsefgault/android/app/build.gradle (created)                                                                                                                                                                                                                                                                            
  testsefgault/android/build.gradle (created)                                                                                                                 
  testsefgault/ios/Runner/Runner-Bridging-Header.h (created)                                                                                                  
  testsefgault/ios/Runner/AppDelegate.swift (created)
  testsefgault/ios/Runner.xcodeproj/project.pbxproj (created)
  testsefgault/.gitignore (created)
  testsefgault/README.md (created)
  testsefgault/test/widget_test.dart (created)
Running "flutter pub get" in testsefgault...                        2.4s
Wrote 72 files.

All done!
You'll need to install additional components before you can run your Flutter app:

[✓] Flutter (Channel beta, 1.23.0-18.1.pre, on Linux, locale en_US.UTF-8)
    • Flutter version 1.23.0-18.1.pre at /home/janez/PycharmProjects/tmp/flutter/flutter
    • Framework revision 198df796aa (5 days ago), 2020-10-15 12:04:33 -0700
    • Engine revision 1d12d82d9c
    • Dart version 2.11.0 (build 2.11.0-213.1.beta)

[✗] Android toolchain - develop for Android devices
    ✗ Unable to locate Android SDK.
      Install Android Studio from: https://developer.android.com/studio/index.html
      On first launch it will assist you in installing the Android SDK components.
      (or visit https://flutter.dev/docs/get-started/install/linux#android-setup for detailed instructions).
      If the Android SDK has been installed to a custom location, please use
      `flutter config --android-sdk` to update to that location.


[!] Android Studio (not installed)
    • Android Studio not found; download from https://developer.android.com/studio/index.html
      (or visit https://flutter.dev/docs/get-started/install/linux#android-setup for detailed instructions).

[✓] IntelliJ IDEA Ultimate Edition (version 2020.2)
    • IntelliJ at /opt/intellij-idea-ultimate-edition
    • Flutter plugin version 49.0.4
    • Dart plugin version 202.6397.47

[!] Connected device
    ! No devices available

! Doctor found issues in 3 categories.

After installing components, run 'flutter doctor' in order to re-validate your setup.
When complete, type 'flutter run' from the 'testsefgault' directory in order to launch your app.
Your application code is in testsefgault/lib/main.dart

And hover run:

➜  testsefgault hover init                         
go: creating new go.mod: module testsefgault/go
hover: You can add the '/home/janez/PycharmProjects/trackself/tmp/testsefgault/go' directory to git.
go: finding module for package github.com/pkg/errors
go: finding module for package github.com/go-flutter-desktop/go-flutter
go: found github.com/go-flutter-desktop/go-flutter in github.com/go-flutter-desktop/go-flutter v0.42.0
go: found github.com/pkg/errors in github.com/pkg/errors v0.9.1
hover: Available plugin for this project:
➜  testsefgault hover run
hover: Using engine from cache
hover: Cleaning the build directory
hover: Target file "lib/main_desktop.dart" not found.
hover: Let hover add the "lib/main_desktop.dart" file? 
hover: [y/N]? y
hover: Target file "lib/main_desktop.dart" has been created.
hover:        Depending on your project, you might want to tweak it.
hover: Bundling flutter app
Font subsetting is not supported in debug mode. The --tree-shake-icons flag will be ignored.
hover: Compiling 'go-flutter' and plugins
runtime/cgo
github.com/Xuanwo/go-locale
github.com/go-flutter-desktop/go-flutter/internal/currentthread
github.com/go-flutter-desktop/go-flutter/embedder
github.com/go-gl/glfw/v3.3/glfw
github.com/go-gl/gl/v3.3-core/gl
github.com/go-flutter-desktop/go-flutter/internal/priorityqueue
github.com/go-flutter-desktop/go-flutter/internal/keyboard
github.com/go-flutter-desktop/go-flutter/internal/opengl
github.com/go-flutter-desktop/go-flutter
testsefgault/go/cmd
hover: Successfully compiled executable binary for linux
hover: Build finished, starting app...
hover: Running testsefgault in debug_unopt mode
flutter: Observatory listening on http://127.0.0.1:50300/
hover: Connecting hover to 'testsefgault' for hot reload
go-flutter: calculated pixelRatio limited to a minimum of 1.0. metrics: {"dpi":157.31612903225803,"monitorWidthMm":310,"monitorWidthSc":1920,"mscpi":157.31612903225803,"pixelRatio":0.9832258064516127,"ppsc":1,"windowWidthPx":800,"windowWidthSc":800}
hover: App 'testsefgault' exited with error: signal: segmentation fault (core dumped)
Error connecting to the service protocol: failed to connect to http://127.0.0.1:50300/  

[provokateurin]

Sorry I have no idea. You can try to debug it using gdb and loading the binary manually or try the release mode.

[JanezStupar]

This is what I got with gdb:

Starting program: /home/janez/PycharmProjects/trackself/tmp/testsefgault/go/build/outputs/linux-debug_unopt/testsefgault 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[New Thread 0x7fffcd2c4640 (LWP 76588)]
[New Thread 0x7fffccac3640 (LWP 76589)]
[New Thread 0x7fffc7fff640 (LWP 76590)]
[New Thread 0x7fffc77fe640 (LWP 76591)]
[New Thread 0x7fffc6ffd640 (LWP 76592)]
[New Thread 0x7fffc4890640 (LWP 76593)]
[New Thread 0x7fffb64e8640 (LWP 76594)]
[New Thread 0x7fffb5ce7640 (LWP 76595)]
[New Thread 0x7fffb54e6640 (LWP 76596)]
[New Thread 0x7fffaabe4640 (LWP 76599)]
[New Thread 0x7fffaa3e3640 (LWP 76600)]
[New Thread 0x7fffa9be2640 (LWP 76601)]
[New Thread 0x7fffa93e1640 (LWP 76602)]
[New Thread 0x7fffa8be0640 (LWP 76603)]
[New Thread 0x7fff92155640 (LWP 76604)]
[New Thread 0x7fffb43c6640 (LWP 76605)]
[New Thread 0x7fffb413f640 (LWP 76606)]
[New Thread 0x7fff90f7f640 (LWP 76607)]
[New Thread 0x7fff90e7e640 (LWP 76608)]
go-flutter: calculated pixelRatio limited to a minimum of 1.0. metrics: {"dpi":93.78461538461538,"monitorWidthMm":520,"monitorWidthSc":1920,"mscpi":93.78461538461538,"pixelRatio":0.5861538461538461,"ppsc":1,"windowWidthPx":800,"windowWidthSc":800}
flutter: Observatory listening on http://127.0.0.1:50300/

Thread 11 "io.flutter.ui" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fffaabe4640 (LWP 76599)]
0x00007ffff7e2597d in ?? () from /home/janez/PycharmProjects/trackself/tmp/testsefgault/go/build/outputs/linux-debug_unopt/libflutter_engine.so

(gdb) continue
Continuing.
[Thread 0x7fff90e7e640 (LWP 76608) exited]
[Thread 0x7fff90f7f640 (LWP 76607) exited]

Thread 11 "io.flutter.ui" received signal SIGSEGV, Segmentation fault.
runtime.raise () at /usr/lib/go/src/runtime/sys_linux_amd64.s:165
165             RET

[JanezStupar]

@jld3103 hover run --release works fine for the test project and for my actual project.

Is the release mode used by builds too? Or is this something I need to specify manually?

I would say that this is an okay workaround for the time being - as I am usually working with the flutter run and only use hover for either wokring on plugin related features or for doing releases.

But I would still like to have the original issue pinpointed and resolved, but its no longer a blocker for me (especially if the fix for pixelRatio is coming soon!).

[provokateurin]

So build does the same as run --release except that it doesn't start the binary. The only thing broken is debug builds right?

[JanezStupar]

Yes, that is correct.

[jonas1-4]

Have the same problem after I reinstalled Linux, Hover worked on the exact same project before
I also ran flutter clean, rm go/build -rf andrm ~/.cache/hover/engine but still doesn't work
if I run hover run --release it also works for me
On another thread for android studio it was suggested to change the android sdk but this didn't work either

[provokateurin]

This has nothing to do with android in any way. It's weird that I can't reproduce it at all, but I'll try

[provokateurin]

On what channel are you? I'm on master so that may be why it works for me. Can you try switching to master and see if that works?

[provokateurin]

The channel doesn't seem to matter. Tried beta and stable and they both work

[jonas1-4]

I changed to version 0.43.0 and it works fine.

Sry not sure how i can switch the channel.

[provokateurin]

Sorry I meant the flutter channel