Question

I am faced the below error :
format string is not a string literal (potentially insecure) [-Wformat-security]

and my code is :

appDelegate.reportString = [NSString stringWithFormat:queryString];

Answer 1

Since you don’t seem to want to format the string (ie no parameters to use with the format string) but just copy it, the better call to use is [NSString stringWithString:]

appDelegate.reportString = [NSString stringWithString:queryString];

If queryString is an immutable string and not an NSMutableString, you don’t need to copy it but can just use;

appDelegate.reportString = queryString;

with the same result.