Bug#810009: gcc-5 misscompiles ARM thumb code

[Sebastian Andrzej Siewior <sebastian@breakpoint.cc>]

Package: gcc-5
Version: 5.2.1-13
Severity: important
Tags: upstream 
Forwarded: https://gcc.gnu.org/PR69124

Clamav (and now tomsfastmath) miscompiles on armhf since the switch to
gcc-5. I forwarded a testcase to gcc bugzilla.
We have a workaround where we use -O1 in the affected file so it is not
a tragedy :) It seems also that using -mtune=cortex-a9 for instance
avoids thumb code and the bug does not trigger.
This bug report here is to simply make the maintainer aware of the issue
and track the bug. I will open the report once there are news in
bugzilla.

Sebastian