1542393 - Debugger fails to connect to GeckoView with an uncaught exception

Status: RESOLVED INVALID

(GeckoView :: General, defect, P1)

Description

[Randall Barker [:rbarker]]

When trying to connect a debugger to FxR, the following error occurs:

2019-04-05 13:45:34.838 7841-7841/org.mozilla.vrbrowser D/GeckoProfile: Found profile dir.
2019-04-05 13:45:34.838 7841-7841/org.mozilla.vrbrowser I/VRB: Creating file: /data/user/0/org.mozilla.vrbrowser/files/mozilla/cccbdyky.default/user.js
2019-04-05 13:45:34.865 7841-7841/? W/art: Unresolved exception class when finding catch block: org.yaml.snakeyaml.error.YAMLException
2019-04-05 13:45:34.866 7841-7841/? D/AndroidRuntime: Shutting down VM
2019-04-05 13:45:34.866 7841-7841/? E/GeckoCrashHandler: >>> REPORTING UNCAUGHT EXCEPTION FROM THREAD 1 ("main")
2019-04-05 13:45:34.869 7841-7841/? I/Process: Sending signal. PID: 7841 SIG: 9

Commenting out this try block allows the debugger to attach.

Comment 1

[Nick Alexander :nalexander [he/him]]

rbarker tracked this down. What is happening is that in FxR local builds, they depend on a local AAR file, which has no dependency information. Therefore there's no dependency JAR at build time, hence ClassNotFoundException. This is not specific to snakeyaml at all; any GV dependency that isn't already in FxR and is actually used would exhibit the issue.

The fix will be to improve the FxR local dependency substitution.