[Issue 23712] ImportC: Unclear documentation of what type is inferred from integer literals (type of '9223372036854775808' is undefined)

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=23712

--- Comment #3 from Iain Buclaw <ibuclaw at gdcproject.org> ---
(In reply to Iain Buclaw from comment #2)
> Seems that it is undefined behaviour in C, as the test fails under gcc, but
> passes for clang.
> 
> https://godbolt.org/z/3hnjzMhfM

Note that both *do* give warnings about it though, to make it abundantly clear
this is not strictly deterministic code.

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