Perhaps better than a book, can anyone authoritatively point to a few small-and-readable but best-in-class open-source C projects to use as a reference?
Crypto library in the size of a hundred tweets [ https://twitter.com/tweetnacl ] by the only person with a genuine claim to being able to write safe C & company.
UNIX v6 clone in ANSI C by influential Plan 9-era Bell Laboratories employee and now influential Google employee Russ Cox, along with influential computer virus author and son of one of the original UNIX authors Robert T. Morrison; entire source code fits in under a hundred pages of well-typeset documents [ warning, old copy, you should generate a modern one: https://pdos.csail.mit.edu/6.828/2011/xv6/xv6-rev6.pdf ].
not recent projects but everything that DJB implemented is absolutely elegant, low on bugs and great as a lesson for how to write secure C. e.g. qmail, djbdns, daemontools, there is a lot of ideas there you can learn from: https://cr.yp.to/
It also helps to build up (and refactor) your toolset over time, memory handling wrappers, logging, I/O, daemonize (https://github.com/jirihnidek/daemon) etc, so that you don't have to keep reinventing the wheel.
There was a book featured in a HN post about a year ago - an older Linux source with extra commentary, used by students in China, I think (book is in English)
Crypto library in the size of a hundred tweets [ https://twitter.com/tweetnacl ] by the only person with a genuine claim to being able to write safe C & company.
* https://github.com/mit-pdos/xv6-public
&
* https://github.com/mit-pdos/xv6-riscv
UNIX v6 clone in ANSI C by influential Plan 9-era Bell Laboratories employee and now influential Google employee Russ Cox, along with influential computer virus author and son of one of the original UNIX authors Robert T. Morrison; entire source code fits in under a hundred pages of well-typeset documents [ warning, old copy, you should generate a modern one: https://pdos.csail.mit.edu/6.828/2011/xv6/xv6-rev6.pdf ].