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[CP-beta]Disable async mode with LLDB#185102

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auto-submit[bot] merged 2 commits into
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vashworth:cp_3.44_lldb_fix
Apr 15, 2026
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[CP-beta]Disable async mode with LLDB#185102
auto-submit[bot] merged 2 commits into
flutter:flutter-3.44-candidate.0from
vashworth:cp_3.44_lldb_fix

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Please fill in the form below, and a flutter domain expert will evaluate this cherry pick request.

Issue Link:

What is the link to the issue this cherry-pick is addressing?

#184254

Impact Description:

What is the impact (ex. visual jank on Samsung phones, app crash, cannot ship an iOS app)?
Does it impact development (ex. flutter doctor crashes when Android Studio is installed),
or the shipping of production apps (the app crashes on launch).
This information is for domain experts and release engineers to understand the consequences of saying yes or no to the cherry pick.

Debugging on physical iOS devices often crashes when using Xcode 26.4.

Changelog Description:

Explain this cherry pick:

  • In one line that is accessible to most Flutter developers.
  • That describes the state prior to the fix.
  • That includes which platforms are impacted.
    See best practices for examples.

[flutter/184254] When debugging on physical iOS devices and Xcode 26.4+, app often crashes.

Workaround:

Is there a workaround for this issue?

  • Use a simulator
  • Or launch from Xcode
  • Or use Xcode 26.3
  • Or use a wireless device

Risk:

What is the risk level of this cherry-pick?

  • Low
  • Medium
  • High

Test Coverage:

Are you confident that your fix is well-tested by automated tests?

  • Yes
  • No

Validation Steps:

What are the steps to validate that this fix works?

Do flutter run in https://github.com/flutter/flutter/tree/master/dev/integration_tests/flutter_gallery using Xcode 26.4 and a physical iOS device.

Reland flutter#184768 and fixed test:
flutter#184768 (comment)

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@vashworth vashworth requested review from a team and jtmcdole as code owners April 15, 2026 20:36
@github-actions github-actions Bot added platform-ios iOS applications specifically tool Affects the "flutter" command-line tool. See also t: labels. a: desktop Running on desktop team-ios Owned by iOS platform team team-macos Owned by the macOS platform team platform-macos labels Apr 15, 2026
@vashworth vashworth changed the base branch from master to flutter-3.44-candidate.0 April 15, 2026 20:36
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This pull request was opened from and to a release candidate branch. This should only be done as part of the official Flutter release process. If you are attempting to make a regular contribution to the Flutter project, please close this PR and follow the instructions at Tree Hygiene for detailed instructions on contributing to Flutter.

Reviewers: Use caution before merging pull requests to release branches. Ensure the proper procedure has been followed.

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Code Review

This pull request refactors the iOS LLDB debugging logic by removing the Xcode dependency from IOSCoreDeviceLauncher and LLDB. It simplifies log handling by removing breakpoint-specific suppression and updates the breakpoint detection mechanism to use a specific string pattern. Additionally, it disables LLDB's asynchronous mode to address breakpoint rearming issues and updates integration tests for code signing verification. Feedback suggests enhancing the breakpoint detection regex to handle plural locations and improving the clarity of the associated documentation and variable naming.

Comment thread dev/devicelab/bin/tasks/ios_debug_workflow.dart
Comment thread packages/flutter_tools/lib/src/ios/lldb.dart
@vashworth vashworth removed the request for review from jtmcdole April 15, 2026 20:38
@vashworth vashworth added CICD Run CI/CD cp: review Cherry-picks in the review queue labels Apr 15, 2026
@github-actions github-actions Bot removed the CICD Run CI/CD label Apr 15, 2026
@eyebrowsoffire eyebrowsoffire added the CICD Run CI/CD label Apr 15, 2026
@eyebrowsoffire eyebrowsoffire added the autosubmit Merge PR when tree becomes green via auto submit App label Apr 15, 2026
@auto-submit auto-submit Bot merged commit 8da9bf5 into flutter:flutter-3.44-candidate.0 Apr 15, 2026
152 checks passed
@stuartmorgan-g stuartmorgan-g added platform-macos Building on or for macOS specifically and removed platform-macos labels Apr 16, 2026
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a: desktop Running on desktop autosubmit Merge PR when tree becomes green via auto submit App CICD Run CI/CD cp: review Cherry-picks in the review queue platform-ios iOS applications specifically platform-macos Building on or for macOS specifically team-ios Owned by iOS platform team team-macos Owned by the macOS platform team tool Affects the "flutter" command-line tool. See also t: labels.

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