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ARM64 compiler bugs in GCC and Rust open vulnerabilities in curl

Reported to contain an ARM64 miscompile affecting curl; root cause contested

curl security researcher Viktor Szakáts reported two ARM64-only miscompiles, one in GCC 15/16 and one in Rust. The claim is contested: no miscompilation bug report was filed with rustc, and the patch has been called 'dubiously correct'.

Updated Oct 15