[clang] [compiler-rt] [llvm] [UBSan] Add -fsanitize=uninitialized-read check (ISO C 6.3.2.1p2) (PR #207529)

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devsw-prayas wrote:

Yea, the comments were unnecessary, describing how I got there rather than the final state. They've been removed and now reflect the final changes performed. To be clear about the process, I designed and wrote the patch myself. Claude was used specifically to help understand the existing sanitizer infra, as noted in the PR description. Happy to have this reviewed on merits and quality. If there's a specific correctness or design issue beyond the comment style, I'll address it directly.

https://github.com/llvm/llvm-project/pull/207529