C99 doesn't need function bodies, or 'VLAs are Turing complete'

Re:C99 doesn't need function bodies, or 'VLAs are Turing com... by Dylan16807 on Thursday August 04, 2022 @07:32PM (#32349635)

What I'm finding in a quick search is:

* It should be fast, but I haven't found a benchmark.

* There appear to be some issues of signals hitting at the wrong time vs. angering valgrind, depending on probe timing.

* Probes like this are mandatory on windows to make sure the stack is allocated, so it can't be that bad.

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Re:C99 doesn't need function bodies, or 'VLAs are Turing com... by anyfoo on Thursday August 04, 2022 @07:36PM (#32349670)

I'm mostly interested in it for kernel code though, so the second point at least does not apply, at least not directly. Maybe there is something analogous when preempting kernel threads, I haven't thought it through at all. But interesting.

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