Some time ago,
I pointed out the
which lets you determine whether a
pointer points into the stack.
Note, however, that if the local variable is captured by a coroutine,
The introduction of coroutines into the C++ language
means that what looks like a local variable may end up being
hoisted into a heap-allocated object representing the coroutine itself
(like, say, a
Something to bear in mind if you're going to be making decisions based on whether a variable is on the stack.