On Tue, 18 Jun 2013 11:09:10 +0200 Bernd Schubert
[off-list ref] wrote:

Here are a few raid6check fixes. This series also includes a patch for
Makefile to allow to build with optimizations. I only fixed raid6check
to build with -O3, but I don't have time left today to fix mdadm 
(e.g. Grow.c:2237:41: error: ‘info2.data_offset’ may be used uninitialized in this function [-Werror=uninitialized])

Thanks for mentioning that.  I've fix that problem.

NeilBrown

I wanted to send the memleak-fixes much earlier, but then
I had been too busy. This patch is lightly tested, patches
from today are only build-tested.