argz_add
    argz_add_sep
    argz_append
    argz_count
    argz_create
    argz_create_sep
    argz_delete
    argz_extract
    argz_insert
    argz_next
    argz_replace
    argz_stringify
    asprintf
    asprintf_r
    dremf
    envz_add
    envz_entry
    envz_get
    envz_merge
    envz_remove
    envz_strip
    fcloseall
    fcloseall_r
    getline
    getopt_long
    getopt_long_only
    memmem
    mempcpy
    strndup
    strnlen
    tdestroy
    timegm
    timelocal
    updwtmpx
    utmpxname
    vasprintf
    vasprintf_r