[boost] [signals] expected failure markup for como

There are currently two test failures (dead_slot_test, and trackable_test) which are marked as expected for como. The note says: 'The failure is caused by a compiler bug, which has been reported to the compiler supplier (or is already known to them).' Does anyone know the exact circumstances of this compiler bug or even has a small reproducer? Tru64/CXX has the same failures and I would like to submit a bug report to the vendor. Markus