martong added a comment.

In D92634#2453822 <https://reviews.llvm.org/D92634#2453822>, @OikawaKirie wrote:

> I think it could be better to implement this check with a checker on 
> `PreStmt<BinaryOperator>` and so on. And IMO, checkers have enough 
> functionalities to report these problems.
>
> Besides, the return value should be the exact value computed from the two 
> integers, even unknown, rather than undefined. As the developers may overflow 
> an integer on purpose.

+1
To provide warnings on overflows is a great idea. However, perhaps a separate 
new checker should emit a report with more information (i.e. that an overflow 
could happen vs "undefined").


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D92634/new/

https://reviews.llvm.org/D92634

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