mclow.lists added a comment.

> Avoid MSVC "warning C4293: '<<': shift count negative or too big, undefined 
> behavior". 
>  MSVC sees (1ULL << N) and warns - being guarded by const bool canFit is 
> insufficient. A small change to the code

Your compiler needs to either (a) get much smarter about its warnings, or (b) 
stop warning about this.  It's just WRONG here.


https://reviews.llvm.org/D41030



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