首先，我知道关于这个主题有很多问题，但无法为我找到解决方案。
突然，我收到如下的 clang 错误：
1. /Volumes/Xcode/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator6.0.sdk/System/Library/Frameworks/CoreFoundation.framework/Headers/CFString.h:154:2: current parser token 'if'
clang: error: unable to execute command: Segmentation fault: 11
clang: error: clang frontend command failed due to signal (use -v to see invocation)
Apple clang version 4.1 (tags/Apple/clang-421.11.66) (based on LLVM 3.1svn)
Target: i386-apple-darwin11.4.0
Thread model: posix
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: error: unable to execute command: Segmentation fault: 11
clang: note: diagnostic msg: Error generating preprocessed source(s).
Command /Volumes/Xcode/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang failed with exit code 254
我无法解决这个问题。 *请帮我解决这个错误.. *