xcode日志输出不完整处理

#ifdef DEBUG

#define NSLog(FORMAT, ...) fprintf(stderr, "%s:%zd\t%s\n", [[[NSString stringWithUTF8String: __FILE__] lastPathComponent] UTF8String], __LINE__, [[NSString stringWithFormat: FORMAT, ## __VA_ARGS__] UTF8String]);

#else

#define NSLog(FORMAT, ...) nil

#endif