Open Radar

 
Summary:
I'm trying to use NSXMLDocument and NSXMLDTD to parse some XML, but for some reason, NSXMLDTD never returns the DTD notations.

Steps to Reproduce:
Using the following code, you can see that it happily picks up the entities and elements, however, it doesn't return the notations.  Even if I inspect the internal _notations variable, I can see that it is always nil. 

int main(int argc, char *argv[]) {
    @autoreleasepool {
        NSString *xml = @""
            "<?xml version=\"1.0\" standalone=\"yes\" ?>\n"
            "<!DOCTYPE xxx SYSTEM \"XXX\" [\n"
            "    <!ENTITY blah SYSTEM \"BLAH\" NDATA note>\n"
            "    <!NOTATION note PUBLIC \"my notation\">\n"
            "    <!ELEMENT xxx (#PCDATA)>\n"
            "]>\n"
            "<xxx>some text</xxx>";

        NSData *xmlData = [xml dataUsingEncoding:NSUTF8StringEncoding];
        NSError *error;
        NSXMLDocument *doc = [[NSXMLDocument alloc] initWithData:xmlData options:NSXMLNodePreserveAll error:&error];
        NSLog(@"Entity = %@", [[doc DTD] entityDeclarationForName:@"blah"]);
        NSLog(@"Element = %@", [[doc DTD] elementDeclarationForName:@"xxx"]);
        NSLog(@"Notation = %@", [[doc DTD] notationDeclarationForName:@"note"]);
    }
}

Expected Results:
I expect to see the notations output to the console

Actual Results:
The notations are nil.

Version:
OS X 10.9.5 (13F34)
OS X 10.10 (14A389)