POSIX_TRACE_GET_STATUS (man3p)
posix_trace_get_status — retrieve the trace status (TRACING)
posix_trace_get_status — retrieve the trace status (TRACING)
fwide — set stream orientation
iconv_open — codeset conversion allocation function
strnlen — get length of fixed size string
strpbrk — scan a string for a byte
getaddrinfo — get address information
setkey — set encoding key (CRYPT)
select — synchronous I/O multiplexing
posix_trace_getnext_event, posix_trace_timedgetnext_event, posix_trace_trygetnext_event — retrieve a trace event (TRACING)
dbm_clearerr, dbm_close, dbm_delete, dbm_error, dbm_fetch, dbm_firstkey, dbm_nextkey, dbm_open, dbm_store — database functions