GCC warning: ``` /llvm-project/llvm/lib/MC/ELFObjectWriter.cpp: In member function ‘void {anonymous}::ELFWriter::writeHeader(const llvm::MCAssembler&)’: /llvm-project/llvm/lib/MC/ELFObjectWriter.cpp:421:20: warning: enumeral and non-enumeral type in conditional expression [-Wextra] 420 | W.OS << char(OSABI == ELF::ELFOSABI_NONE && OWriter.seenGnuAbi() | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 421 | ? ELF::ELFOSABI_GNU | ^~~~~~~~~~~~~~~~~~~ 422 | : OSABI); | ~~~~~~~ ```