...nt() endpwent() endutxent() fcvt() [POSIX.1-2001 only (function removed in POSIX.1-2008)] ftw() gcvt() [POSIX.1-2001 only (function removed in POSIX.1-2008)] getc_unlocked() get…...ason to mark so-marked functions as MT-Unsafe, but when this behavior is optional (e.g., nftw (3) with FTW_CHDIR ), avoiding the option may be a good alternative to using full p…