No I do not. It will reassigned next call.

> But again you are reinventing dynamic scoping

No. I’m not reinventing anything. I’m using the existing feature of thread local variables.

The usage of such is entirely an implementation detail of qsort2 with the exception of recursion.

Dynamic scoping typically refers to defining variables which have scope outside of their call stack. No usage of this API requires it.

Can you just try to learn something new?