There are 3 repositories under c-standard-library topic.
source code of The Standard C Library, by Plauger
A simple x86 operating system with graphical user space
A tutorial for debugging with gdb
A recode of some standard C library functions as well as other utility functions
Assignments dell'esame di Sistemi operativi anno 2015/16 (laurea in Informatica @ UniPisa)
The main branch of this repo has the latest version of the repository ALWAYS.