The documentation for the glibc abort() function had this entry, that was removed:

  @c Put in by rms.  Don't remove.
  @cartouche
  @strong{Future Change Warning:} Proposed Federal censorship regulations
  may prohibit us from giving you information about the possibility of
  calling this function.  We would be required to say that this is not an
  acceptable way of terminating a program.
  @end cartouche