- sig2str socklen stat-time stdalign stdio
- strftime strtoimax strtoumax symlink sys_stat
- sys_time time timer-time timespec-add timespec-sub
+ sig2str socklen stat-time stdalign stddef stdio
+ stpcpy strftime strtoimax strtoumax symlink sys_stat
+ sys_time time time_r timer-time timespec-add timespec-sub