Since we upgraded a Mac to the latest Xcode (coming from 12.4) to 13.1 or 13.2.1 / commandline tools 13.2 we're hitting an error when linking our executable. clang: error: unable to execute command: Bus error: 10 clang: error: linker command failed due to signal (use -v to see invocation) ninja: build stopped: subcommand failed. It only happens when doing LTO builds. I disabled system hardening to be able to attach LLDB to the linker hoping to find more info on why it might crash and got a huge stack trace: * frame #0: 0x00000001058087d0 libLTO.dylib`computeKnownBitsFromOperator(llvm::Operator const*, llvm::APInt const&, llvm::KnownBits&, unsigned int, (anonymous namespace)::Query const&) + 32 frame #1: 0x00000001057f6333 libLTO.dylib`computeKnownBits(llvm::Value const*, llvm::APInt const&, llvm::KnownBits&, unsigned int, (anonymous namespace)::Query const&) + 1523 frame #2: 0x00000001057f5cc9 libLTO.dylib`computeKnownBits(llvm::Value const*, llvm::KnownBits&, unsigned int