null-ptr.h   43 maint/gnulib/tests/test-canonicalize-lgpl.c # include "null-ptr.h"
null-ptr.h   40 maint/gnulib/tests/test-canonicalize.c # include "null-ptr.h"
null-ptr.h   40 maint/gnulib/tests/test-ptsname_r.c # include "null-ptr.h"