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Hi,

While trying to prevent InnoDB INFORMATION_SCHEMA plugins from
starting if the main innodb plugin is not started (problem described
here: http://venublog.com/2008/04/23/simpl...odb-plugin-10/)
I encountered a double free bug: http://bugs.mysql.com/36399

The problem Venu reported consists of the following:

1. INSTALL PLUGIN innodb_trx
2. (main innodb storage engine plugin is not loaded)
3. SELECT * FROM INFORMATION_SCHEMA.innodb_trx <-- crash

The solution is to prevent innodb_trx plugin from starting if the innodb
plugin is not started, but then, because of the double free bug
(http://bugs.mysql.com/36399) it will be like this:

1. INSTALL PLUGIN innodb_trx <-- crash becasue of Bug#36399

Can someone take a look at http://bugs.mysql.com/36399? It is somewhat
obvious and I crafted a patch that fixes it...

Thanks!

--=20
Vasil Dimov
moc.elcaro@vomid.lisav Software Developer @ Oracle/Innobase Oy
gro.DSBeerF@dv Committer @ FreeBSD.org
gro.d5v@dv Home @ Sofia, Bulgaria

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