Hi,

While testing the new libunwind version we came across a new type of unwind 
info inaccuracy on x86-64 RHEL6. See http://gcc.gnu.org/PR48597 for the details.

So far we've seen it occur in only four functions, so not common - except if 
you happen to call those functions a lot, like we do :-)

It's possible all GCC versions to date are affected, but definitely GCC 4.4.x 
and probably also current snapshots (4.6.1 prerelease).

Regards,
Lassi
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