Fabrice #Bellard is the French code monster who created QEMU, FFmpeg, Tiny C, and tonnes of other highly influential, highly efficient programmes.

But his 2002 IOCCC-winning Obfuscated Tiny C Compiler—a 2048-byte-long, self-hosting C #compiler—is special, even in the company of his other inventions.

https://bellard.org/otcc/