Am 17.08.2021 um 11:10 schrieb William F Pokorny:

> If you've not found it, there is a relatively popular C++ header only 
> 'date.h' (and 'tz.*') for c++11/C++14/C++17. I looked at it briefly, but 
> then bailed for a simpler c/unix only path.

Fun fact: "Slightly modified versions of "date.h" and "tz.h" were voted 
into the C++20 working draft at the Jacksonville FL meeting on 2018-03-17"

So it can't be too terrible.

> Aside: What code analysis tool is picking up the thread safe issues for 
> you?

That would be GitHub's CodeQL. What it actually does (among other 
things) is pick up the use of functions that are deemed inherently unsafe.

So, for instance, if I were to build a wall of mutexes and lock guards 
around the function, CodeQL would still bicker about it.

And rightly so, because even such a Fort Knox approach only works if 
there's a guarantee that the functions aren't called from anywhere else. 
So it's not the optimum approach.

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