JudyHSFreeArray(3) on Linux
The text 43655ec2ec16, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie) shipped it. The page shows this text now.
C library for creating and accessing a dynamic array, using an array-of-bytes of a length: Length as an Index and a word as a Value.