putc_unlocked() putchar_unlocked() putenv() pututxline() rand() readdir() setenv() setgrent() setkey() setpwent() setutxent() strerror() strsignal ... putchar() putchar_unlocked() …directory, for example using read (2) or readdir (2). The reader must write a responseSAFE_FUNCTIONS The following functions are affected: readdir_r () getgrgid_r () getgrnam_r () getpwnam