explain_setvbuf_or_die(3) on Linux
The text 4b439c0cd5c6, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch) shipped it. The page shows this text now.
stream buffering operations and report errors