Ceph

log/Log.cc:193:5: warning: indirection of non-volatile null pointer will be deleted, not trap [-Wnull-dereference]
*(int *)(0) = 0xdead;
^_~~~~~~~~

Code is:
if (m_inject_segv)
*(int *)(0) = 0xdead;

So this code is definitely not going to trap when running on FreeBSD or Clang.

Code is also very unclear on why we would like to trap this way