NULL               83 maint/gnulib/lib/stddef.in.h #   undef NULL
NULL               91 maint/gnulib/lib/stddef.in.h #     define NULL __null
NULL               93 maint/gnulib/lib/stddef.in.h #     define NULL 0L
NULL               96 maint/gnulib/lib/stddef.in.h #    define NULL ((void *) 0)