Bug: App fails to launch on macOS 26 due to code signature invalid #3740
Description
SuperTux Version
0.7.0
System Information
macOS 16 ARM64
Expected Behavior
Maybe signature, or add to README.md
Actual Behavior
Platform: macOS 26.3.1 (25D2128), Apple M4 (ARM64)
SuperTux version: v0.7.0 (SuperTux-v0.7.0-Darwin-arm64.dmg)
Bug: App fails to launch on macOS 26 due to code signature invalid
After installing from the official DMG, SuperTux crashes immediately on launch with a code signing error. The app never opens.
Crash exception:
Exception Type: EXC_BAD_ACCESS (SIGKILL (Code Signature Invalid))
Termination Reason: Namespace CODESIGNING, Code 2, Invalid Page
This appears to be caused by stricter code signing validation in macOS 26. The bundled dylibs in Contents/Resources/Frameworks/ fail signature validation, preventing dyld from loading the app at all.
Workaround
The following Terminal commands fix the issue by stripping quarantine attributes and re-signing the bundle with a local ad-hoc signature.:
sudo xattr -cr /Applications/SuperTux.app
sudo find /Applications/SuperTux.app -name "*.dylib" -exec codesign --force --sign - {} \;
sudo codesign --force --sign - /Applications/SuperTux.app/Contents/Resources/bin/supertux2
sudo codesign --force --deep --sign - /Applications/SuperTux.appNote: sudo is required because several dylibs in the bundle are root-owned and cannot be modified by a regular user.
Suggested fix
The DMG release should be properly signed and notarized with an Apple Developer ID so that macOS accepts it without manual intervention. Or the build pipeline could include an ad-hoc re-signing step, and the README/release notes should document this workaround for users on macOS 26+.
Steps To Reproduce Actual Behavior
Run as is.
Additional Information
No response
Guidelines For Reporting Issues
- I have read https://github.com/SuperTux/supertux/blob/master/CONTRIBUTING.md#bug-reports.
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