[clang] [Sema] Handle large shift counts in GetExprRange (PR #68590)

[Erich Keane via cfe-commits]

https://github.com/erichkeane commented:

So the change itself looks right.  The comment at the top of the test belongs in the commit message/github discussion, not in the test itself.

Also, needs a release note.

https://github.com/llvm/llvm-project/pull/68590