Luca Boccassi
4f397da505
prctl() is an API full of pitfalls: it is variadic, and some interfaces don't expect zero-initialization of excess arguments, and others do. Moreover, the parameters are "long", and nonetheless we usually pass "int" to them. If we are too dumb to call it properly, let's just not call it directly anymore, but let's add a wrapper around it that makes the function non-variadic and declares the right types. Then, let's port over everything to it. This is inspired by #42996, but we had issues with this many times, before and looking at this PR one can see that we otherwise still are having the issue at numerous other places.
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