[clang] [compiler-rt] [UBSan] Fix _BitInt value display for unsigned types in runtime handlers (PR #194405)

[Paul Kirth via llvm-commits]

https://github.com/ilovepi approved this pull request.

LGTM, modulo some minor comments. I don't deal too much with BitInt code so you may want feedback from another reviewer before landing, but the patch seems reasonable to me.

I'd also suggest checking with @earnol , as https://github.com/llvm/llvm-project/pull/96240#discussion_r1728995161 makes it sound like their change shouldn't have affected unsigned BitInts, so likely worth double checking that something important isn't being overlooked.

https://github.com/llvm/llvm-project/pull/194405