Comment by JdeBP

It has needed some fixing over the years. errno was one thing. There have been a number of things in that vein, where Bernstein relied upon 1989 C or even K&R semantics and suchlike.

But compared to some other code from the 1990s, it has lasted the test of time quite well.

* https://jdebp.uk/Softwares/djbwares/