Question

ARC is giving me a hard time with following cast:

NSDictionary *attributes;
SecItemCopyMatching((__bridge CFDictionaryRef)keychainItemQuery, (CFTypeRef *)&attributes);

Error: Cast of an indirect pointer to an Objective-C pointer to ‘CFTypeRef ‘ (aka ‘const void *‘) is disallowed with ARC

Answer 1

The problem is that attributes shouldn’t be a dictionary, it should be a SecKeyRef or CFDataRef. And then cast that back into NSData for the password data copied into it.

Like so:

CFDataRef attributes;
SecItemCopyMatching((__bridge CFDictionaryRef)keychainItemQuery, (CFTypeRef *)&attributes);
NSData *passDat = (__bridge_transfer NSData *)attributes;