Am Sa., 15. Okt. 2022 um 14:21 Uhr schrieb Shiro Kawai <xxxxxx@gmail.com>:
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> Is it possible that more than one thread attach continuation marks to the same continuation simultaneously?
> I couldn't come up a code that does so, but I'm not susre if it's impossible.  For example, can an implementation-level error be triggered right after a continuation passed from a different thread, and the handler attaches a new mark?

Attaching continuation marks does not mutate but, abstractly, conses
to a continuation frame. In principle, it is no different from
attaching frames by non-tail-calling procedures.

Does this help and answer your question?

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