[isabelle-dev] Broken component: jdk7u40

Bertram Felgenhauer bertram.felgenhauer at googlemail.com
Tue Sep 17 13:55:55 CEST 2013

Lars Hupel wrote:
> I was trying to update to the repository version today, but:
> $ bin/isabelle components -a
> ### Missing Isabelle component: "/home/lars/.isabelle/contrib/jdk-7u40"
> Getting "http://isabelle.in.tum.de/components/jdk-7u40.tar.gz"
> Unpacking "/home/lars/.isabelle/contrib/jdk-7u40.tar.gz"
> tar: Skipping to next header
> tar: A lone zero block at 840553
> tar: Exiting with failure status due to previous errors

This happens here, too. I have two copies of the jdk-7u40.tar.gz file,
one three days old, with sha1sum
and one downloaded today with sha1sum
The latter file produces the error from above when unpacked.
Re-downloading doesn't help; the file checksum stays the same.

The two files are almost identical; they have the same size, and just a
few bytes differ in the 8kb block starting at offset 185348096.


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