[clang] [clang-tools-extra] [Clang] Default the warning for chained comparison to an error. (PR #128145)

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gmiller024 wrote:

Hello, 
We are maintaining a downstream version of the monorepo based on the LLVM main
branch. We have encountered validation failures with our language conformance
test suites when merging in this upstream commit into our monorepo. We are seeing below errors:
error: comparisons like 'X<=Y<=Z' don't have their mathematical meaning [-Wparentheses]


https://github.com/llvm/llvm-project/pull/128145