BACKPORT: Fix _LIBCUDACXX_UNREACHABLE for old MSVC (#1114)
#1143
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MSVC2017 / 2019 have issues properly determining that `__assume(0)` is indeed meant to mean unreachable code and complains about missing return statement sometimes. We can work around this by wrapping it into a `__declspec(noreturn)` function 🤷 Addresses nvbug4359466
miscco
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nvbug
wmaxey
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Nov 28, 2023
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This backports #1114