/usr/include/stxxl/bits/common/ is in libstxxl-dev 1.3.1-5ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/stxxl/bits/common/aligned_alloc.h
/usr/include/stxxl/bits/common/error_handling.h
/usr/include/stxxl/bits/common/exceptions.h
/usr/include/stxxl/bits/common/exithandler.h
/usr/include/stxxl/bits/common/is_sorted.h
/usr/include/stxxl/bits/common/log.h
/usr/include/stxxl/bits/common/mutex.h
/usr/include/stxxl/bits/common/new_alloc.h
/usr/include/stxxl/bits/common/rand.h
/usr/include/stxxl/bits/common/seed.h
/usr/include/stxxl/bits/common/semaphore.h
/usr/include/stxxl/bits/common/settings.h
/usr/include/stxxl/bits/common/simple_vector.h
/usr/include/stxxl/bits/common/state.h
/usr/include/stxxl/bits/common/switch.h
/usr/include/stxxl/bits/common/timer.h
/usr/include/stxxl/bits/common/tmeta.h
/usr/include/stxxl/bits/common/tuple.h
/usr/include/stxxl/bits/common/types.h
/usr/include/stxxl/bits/common/utils.h