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Bug#821146: openjdk-7-jre-headless: doesn't properly unregister binfmt entry on removal

To: Debian Bug Tracking System <submit@xxxxxxxxxxxxxxx>
From: Christoph Anton Mitterer <calestyo@xxxxxxxxxxxx>
Date: Sat, 16 Apr 2016 03:18:10 +0200
Delivered-to: submit@xxxxxxxxxxxxxxx
Reply-to: Christoph Anton Mitterer <calestyo@xxxxxxxxxxxx>, 821146@xxxxxxxxxxxxxxx
Resent-cc: OpenJDK Team <openjdk@xxxxxxxxxxxxxxxxxxx>
Resent-date: Sat, 16 Apr 2016 01:21:02 +0000
Resent-from: Christoph Anton Mitterer <calestyo@xxxxxxxxxxxx>
Resent-message-id: <handler.821146.B.146076949518033@xxxxxxxxxxxxxxx>
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Package: openjdk-7-jre-headless
Severity: important


Hi.

Think we've already had that problem when going from 6 to 7...
Again, openjdk-7 doesn't remove it's entries to binfmt when being
removed/purged, which then stay there forever... and seem to even
prevent openjdk-8 from adding it's own:
# update-binfmts --display
jar (enabled):
     package = openjdk-7
        type = magic
      offset = 0
       magic = PK\x03\x04
        mask = 
 interpreter = /usr/bin/jexec
    detector = 


Cheers,
Chris.