rjmccall added a comment.

In https://reviews.llvm.org/D44559#1040928, @lebedev.ri wrote:

> In https://reviews.llvm.org/D44559#1040799, @rjmccall wrote:
>
> > I think we're correct not to warn here and that GCC/ICC are being noisy.  
> > The existence of a temporary promotion to a wider type doesn't justify 
> > warning on arithmetic between two operands that are the same size as the 
> > ultimate result.  It is totally fair for users to think of this operation 
> > as being "closed" on the original type.
>
>
> Could you please clarify, are you saying that PR35409 
> <https://bugs.llvm.org/show_bug.cgi?id=35409> is not a bug, and clang should 
> continue to not warn in those cases?


Correct.

> If we would have "conversion sanitizer" 
> <https://bugs.llvm.org/show_bug.cgi?id=21530>, detection of such problems 
> would be easy, but without it, right now it is rather hard to detect such 
> issues...

What issue?  That arithmetic can overflow?


Repository:
  rC Clang

https://reviews.llvm.org/D44559



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