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I need to create in an iOS application a fake va_list to pass to a NSString initWithFormat:arguments: function, this is my code: NSArray *fixedArguments = [[NSArray alloc] initWithArray:arguments]; NSRange range = NSMakeRange(0, [fixedArguments count]); va_list fakeArgList = (va_list)malloc(sizeof(NSString *) * [fixedArguments count]); __unsafe_unretained id *ptr = (__unsafe_unretained id *)fakeArgList; [fixedArguments getObjects:ptr range:range]; content = [[NSString alloc] initWithFormat:outputFormat arguments:(va_list)fakeArgList]; free(fakeArgList); The compiler complains with this message on the cast line: error: cast of a non-Objective-C pointer type 'va_list' (aka 'char *') to '__unsafe_unretained id *' is disallowed with ARC The getObjects:range: function is defined as follows: - (void)getObjects:(id __unsafe_unretained [])objects range:(NSRange)range; I've tried everything but still can't get rid of this error... Is there a solution for creating a fake va_list with ARC enabled? What am i doing wrong?

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