__USE_FORTIFY_LEVEL  141 maint/gnulib/lib/cdefs.h #define __bos(ptr) __builtin_object_size (ptr, __USE_FORTIFY_LEVEL > 1)
__USE_FORTIFY_LEVEL  145 maint/gnulib/lib/cdefs.h #if __USE_FORTIFY_LEVEL == 3 && __glibc_clang_prereq (9, 0)
__USE_FORTIFY_LEVEL  350 maint/gnulib/lib/cdefs.h # if defined __USE_FORTIFY_LEVEL && __USE_FORTIFY_LEVEL > 0
__USE_FORTIFY_LEVEL  795 maint/gnulib/lib/stdio.in.h #  if (0 < __USE_FORTIFY_LEVEL                                          \