DoYouEvenRetainSelf.m

#import <Foundation/Foundation.h>

@interface Node: NSObject

@property (nonatomic, weak) Node *parent;
@property (nonatomic) NSArray *children;

@end

@implementation Node {
	NSMutableArray *_children;
}

- init {
	self = [super init];
	_children = [NSMutableArray array];
	return self;
}

- (void)dealloc {
	NSLog(@"Node.dealloc");
}

- (void)addChild:(Node *)child {
	child->_parent = self;
	[_children addObject:child];
}

- (void)removeFromParent {
	NSLog(@"Gonna remove myself from parent...");
	[_parent->_children removeObject:self];
	_parent = nil;
	NSLog(@"Removed myself from parent");
}

@end

static Node *setup() {
	__auto_type root = [Node new];
	[root addChild:[Node new]];
	return root;
}

int main(int argc, char *argv[]) {
	@autoreleasepool {
		__auto_type root = setup();
		
		__unsafe_unretained Node *child = root.children[0];
		[child removeFromParent];
	}
}