The Post-libc Era: Modernizing C's Standard Library from the Ground Up

As systems programming increasingly relies on async IO and direct kernel interfaces, sp.h challenges the assumption that C code must build on libc. This 15K-line library reimagines how a standard library should work by eliminating null-terminated strings, enforcing explicit memory ownership, and prioritizing syscall interfaces over compatibility. It demonstrates that C can be modernized without sacrificing performance or control.