Moor: Does not build in Release Mode: ../../third_party/dart/runtime/vm/compiler/backend/il.h: 999: error: unreachable code

[knaeckeKami]

Hi,

I'm having an issue after upgrading to moor_ffi 0.6.0 on the current stable version of flutter.
I cannot build my app in release mode. Debug mode works fine. I also happens on a very basic project and can be reproduced in the integrations tests of moor.

To reproduce, navigate to:
moor/extras/integration_tests/flutter_db
And try to build the app in release mode:

flutter build apk --release -t lib/moor_ffi.dart
! moor 3.1.0 from path ../../../moor
! moor_flutter 3.0.0 from path ../../../moor_flutter
Running "flutter pub get" in flutter_db...                          0.6s
You are building a fat APK that includes binaries for android-arm, android-arm64, android-x64.
If you are deploying the app to the Play Store, it's recommended to use app bundles or split the APK to reduce the APK size.
    To generate an app bundle, run:
        flutter build appbundle --target-platform android-arm,android-arm64,android-x64
        Learn more on: https://developer.android.com/guide/app-bundle
    To split the APKs per ABI, run:
        flutter build apk --target-platform android-arm,android-arm64,android-x64 --split-per-abi
        Learn more on:  https://developer.android.com/studio/build/configure-apk-splits#configure-abi-split
[!] Your app isn't using AndroidX.
    To avoid potential build failures, you can quickly migrate your app by following the steps on https://goo.gl/CP92wY.
../../third_party/dart/runtime/vm/compiler/backend/il.h: 999: error: unreachable code
Dart snapshot generator failed with exit code -6
../../third_party/dart/runtime/vm/compiler/backend/il.h: 999: error: unreachable code
Dart snapshot generator failed with exit code -6
Target android_aot_release_android-arm64 failed: Exception: AOT snapshotter exited with code -6
Target android_aot_release_android-x64 failed: Exception: AOT snapshotter exited with code -6
build failed.

FAILURE: Build failed with an exception.

* Where:
Script '/Users/kami/development/flutter/packages/flutter_tools/gradle/flutter.gradle' line: 882

* What went wrong:
Execution failed for task ':app:compileFlutterBuildRelease'.
> Process 'command '/Users/kami/development/flutter/bin/flutter'' finished with non-zero exit value 1

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 23s
Running Gradle task 'assembleRelease'...
Running Gradle task 'assembleRelease'... Done                      24.8s
Gradle task assembleRelease failed with exit code 1

The iOS build fails with a similar error.

flutter doctor:

flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, v1.17.1, on Mac OS X 10.15.4 19E287, locale en-GB)
[✓] Android toolchain - develop for Android devices (Android SDK version 29.0.2)
[✓] Xcode - develop for iOS and macOS (Xcode 11.4.1)
[✓] Android Studio (version 3.6)
[!] IntelliJ IDEA Ultimate Edition (version 2019.1.2)
    ✗ Flutter plugin not installed; this adds Flutter specific functionality.
    ✗ Dart plugin not installed; this adds Dart specific functionality.
[✓] VS Code (version 1.45.0)
[✓] Connected device (1 available)

I also tried it in the current flutter beta version, same error.

I'm not quite sure if that's really an issue with moor or a bug in the build system - Do you have any clues why this might happen? If not, I'll open an issue in the flutter project.

[simolus3]

I can reproduce this by running dart2native test/vm_test.dart, so it's not a Flutter bug. It's definitely a bug in Dart though, I'll try to come up with a smaller repro.

[simolus3]

I tried to poke around a bit, but I couldn't find a much smaller repro. Interestingly, aot-compiling some test files inside moor_ffi doesn't fail, only the whole integration test. https://github.com/dart-lang/sdk/issues/41971

[softkot]

Confirm the issue.

[kuhnroyal]

I am running into this as well, 2 apps don't build any more so I have to stay on 3.0.0 for now.

[vandir]

Same here, actually solved by downgrading to moor_ffi: "0.5.0".

[knyghtryda]

I was scratching my head for a while with this one too. moor_ffi 0.5.0 still works.

[CripyIce]

Had this issue for 2 days and finally realised it's because of moor_ffi 0.6.0... After downgrading to 0.5.0 everything works fine.

[maginc]

Same issue, fixed by downgrading moor_ffi to 0.5.0

[andreineacsu]

Same issue here, fixed by downgrading moor_ffi to 0.5.0

[knaeckeKami]

This is now fixed on the flutter master branch

[kuhnroyal]

Hopefully they pick this into stable.

[knaeckeKami]

I requested it in https://github.com/flutter/flutter/issues/58631 . If this gets enough thumbs up, maybe they'll hotfix it.

[mbabuglia]

This is now fixed on flutter beta branch, only one more branch to go.

[szotp]

If I'm also having https://github.com/simolus3/moor/issues/420, the only solution is to use beta, correct?

[kuhnroyal]

@szotp Yes

[BunnyMan1]

Steps to fix it as of today with latest update on Jul 29, 2020:

1. Update Moor Package to v3.3.0
2. Update Moor_Generator to v3.3.0
3. Install 'sqlite3_flutter_libs' package (as updated in the docs)
4. Remove moor_ffi package as it is deprecated now.
5. Change imports from moor_ffi to package:moor/ffi.dart.
6. Check installed versions for path, path_provider and build_runner using flutter pub outdated

Clear build cache and build runner cache.
Build production app now without any errors.

[simolus3]

Dart 2.9 and Flutter 1.20 contain the fix.