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NEWS: News for big endian sha1 bug fix.

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We could give more details about how to migrate tags, but I'm not sure
that it's a practical problem, or just a theoretical one.
This commit is contained in:
David Bremner 2013-11-24 17:29:43 -04:00
parent 20adfe39d7
commit 7f07bfd6d0
1 changed files with 17 additions and 1 deletions
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@ -1,6 +1,22 @@
Notmuch 0.17~rc1 (2013-11-20)
Notmuch 0.17~rc2 (2013-xx-yy)
=============================
Incompatible change in SHA1 computation
---------------------------------------
Previously on big endian architectures like sparc and powerpc the
computation of SHA1 hashes was incorrect. This meant that messages
with overlong or missing message-ids were given different computed
message-ids than on more common little endian architectures like i386
and amd64. If you use notmuch on a big endian architecture, you are
strongly advised to make a backup of your tags using `notmuch dump`
before this upgrade. You can locate the affected files using something
like:
notmuch dump | \
awk '/^notmuch-sha1-[0-9a-f]{40} / \
{system("notmuch search --exclude=false --output=files id:" $1)}'
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