llvm-project

5dd2b06d - [clang-tidy] Fix OOB access in `FormatStringConverter` with signed chars (#169215)

[clang-tidy] Fix OOB access in `FormatStringConverter` with signed chars (#169215) `FormatStringConverter::appendFormatText` incorrectly treated non-ASCII characters (e.g. UTF-8) as negative values when using signed chars. This caused them to pass the `< 32` check for control characters. The negative values were passed to `llvm::hexdigit`, resulting in an OOB access and a crash. This closes [#169198](https://github.com/llvm/llvm-project/issues/169198)