I like the idea of your first try, but it's not guaranteed to work on all implem... | Hacker News

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		chowells on June 28, 2018 \| parent \| context \| favorite \| on: Dangerous Optimizations and the Loss of Causality ... I like the idea of your first try, but it's not guaranteed to work on all implementations, even with the type promotion fixed. The problem is that the C standard doesn't specify a maximum size for int. It could be a 128 bit type. "Portable C" doesn't exist.

jcelerier on June 28, 2018 [–]

> I like the idea of your first try, but it's not guaranteed to work on all implementations,

in C++ you'd just add

    static_assert(sizeof(int) < sizeof(int64_t), "fix your types");

to be safe about this

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