1 
2 @interface NSString @end
3 
4 @interface NSString (NSStringExtensionMethods)
5 + (id)stringWithUTF8String:(const char *)nullTerminatedCString;
6 @end
7 
infoo(const char * cs)8 static inline void infoo(const char *cs) {
9   NSString *s = @(cs);
10 }
11