我不知道是什么原因造成的.
它不会发生在iPhone 5和模拟器上.它只发生在我的原装iPhone 7上.
fatal error: error in backend: Error while trying to spill X0 from class GPR64: Cannot scavenge register without an emergency spill slot! clang: error: clang frontend command Failed with exit code 70 (use -v to see invocation) Apple LLVM version 9.0.0 (clang-900.0.34.1) Target: aarch64-apple-darwin16.7.0 Thread model: posix InstalledDir: /Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin clang: note: diagnostic msg: PLEASE submit a bug report to http://developer.apple.com/bugreporter/ and include the crash backtrace,preprocessed source,and associated run script. clang: note: diagnostic msg: ******************** PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT: Preprocessed source(s) and associated run script(s) are located at: clang: note: diagnostic msg: /var/folders/xg/tgwkzqt15xd9jprnv9f0gn4c0000gn/T/CityArray-6e6c1e.m clang: note: diagnostic msg: /var/folders/xg/tgwkzqt15xd9jprnv9f0gn4c0000gn/T/CityArray-6e6c1e.cache clang: note: diagnostic msg: /var/folders/xg/tgwkzqt15xd9jprnv9f0gn4c0000gn/T/CityArray-6e6c1e.sh clang: note: diagnostic msg: Crash backtrace is located in clang: note: diagnostic msg: /Users/junhyun/Library/Logs/DiagnosticReports/clang_<YYYY-MM-DD-HHMMSS>_<hostname>.crash clang: note: diagnostic msg: (choose the .crash file that corresponds to your crash) clang: note: diagnostic msg: ********************