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6d34cfac53
This diagnoses comparisons like `ptr + unsigned_index < ptr` and `ptr + unsigned_index >= ptr`, which are always false/true because addition of a pointer and an unsigned index cannot wrap (or the behavior is undefined). This warning is intended to help find broken bounds checks (which must be implemented in terms of uintptr_t instead). Fixes https://github.com/llvm/llvm-project/issues/120214.