S_ISBLK            71 lib/sys_stat.in.h # undef S_ISBLK
S_ISBLK            86 lib/sys_stat.in.h #  define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
S_ISBLK            88 lib/sys_stat.in.h #  define S_ISBLK(m) 0