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fusesource / jansi

Jansi is a small java library that allows you to use ANSI escape sequences to format your console output which works even on windows.
http://fusesource.github.io/jansi/
Apache License 2.0
1.11k stars 140 forks source link

NullPointerException thrown during systemUninstall #214

Closed guylabs closed 3 years ago

guylabs commented 3 years ago

This originated from https://issues.apache.org/jira/browse/MNG-7161 and we saw that out of these changes https://github.com/fusesource/jansi/commit/63bd892b2bdfc253ec119a57bdd42df5e80fd859#diff-d59db8655d9ae2d11948e2b411c34fc9e8513f29065d82c978d7128dafbe3bafR414-R420 it can happen that the referenced outputstreams can be null and cause a NullPointerException.

This happens when other libraries get a hold of the System.out or System.err and then close the outputstreams before Jansi can close them.

A possible fix would be to check if they have already been disposed and then skip the uninstall() call.

michael-o commented 3 years ago

@gnodet, we need you here!