What is causing this: Cannot jump from switch statement to this case label

This is a switch statement that I am getting errors on:

        switch (transaction.transactionState) {
            
        case SKPaymentTransactionStatePurchasing:
            
            // show wait view here
            statusLabel.text = @"Processing...";
            break;
            
        case SKPaymentTransactionStatePurchased:
            
            [[SKPaymentQueue defaultQueue] finishTransaction:transaction];
            
            // remove wait view and unlock iClooud Syncing
            statusLabel.text = @"Done!";
            
            NSError *error = nil;
            [SFHFKeychainUtils storeUsername:@"IAPNoob01" andPassword:@"whatever" forServiceName: kStoredData updateExisting:YES error:&error];
            
            // apply purchase action  - hide lock overlay and
            [oStockLock setBackgroundImage:nil forState:UIControlStateNormal];
            
            // do other thing to enable the features
            
            break;
            
        case SKPaymentTransactionStateRestored:
            
            [[SKPaymentQueue defaultQueue] finishTransaction:transaction];

            // remove wait view here
            statusLabel.text = @"";
            break;
            
        case SKPaymentTransactionStateFailed:
            
            if (transaction.error.code != SKErrorPaymentCancelled) {
                NSLog(@"Error payment cancelled");
            }
            [[SKPaymentQueue defaultQueue] finishTransaction:transaction];
            // remove wait view here
            statusLabel.text = @"Purchase Error!";
            break;
            
        default:
            break;
    }

The last two cases, plus the default, are giving me the following error:

> Cannot jump from switch statement to this case label

I have used the switch statement many, many times; this is the first time I have seen this. The code has been copied from a tutorial (here), which I am trying to adapt for my app. Would appreciate the help on this one. SD

C is not Swift. You'll be happier if you structure your switch statements using curly braces round all of the cases interiors, like this:

switch (tag) {
    case 1: { // curly braces
        // ...
        break;
    }
    case 2: {  // curly braces
        // ...
        break;
    }
    case 3: {  // curly braces
        // ...
        break;
    }
}

The extra level of curly braces allows you to do things you can't do otherwise.