[bug #21133] NSKeyedArchiver doesn't encode NSData correctly

[Pauli Ojala]

URL:
  <http://savannah.gnu.org/bugs/?21133>

                 Summary: NSKeyedArchiver doesn't encode NSData correctly
                 Project: GNUstep
            Submitted by: pojala
            Submitted on: Friday 21/09/07 at 21:01
                Category: Base/Foundation
                Severity: 3 - Normal
              Item Group: Bug
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any

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Details:


NSKeyedArchiver doesn't properly encode an NSData object's contents as a data
block. The reason for this appears to be that NSData is a class cluster but
NSKeyedArchiver fails to check for NSData's concrete subclasses (e.g.
NSDataMalloc) when encoding.

On line 248 in NSKeyedArchiver.m, the following check is performed to
determine if an object is stored directly:

              if (c == [NSString class]
                || c == [NSNumber class]
                || c == [NSDate class]
                || c == [NSData class]
              )

Adding the following additional conditions resolved the problem for me:

                || [c isSubclassOfClass:[NSString class]]
                || [c isSubclassOfClass:[NSNumber class]]
                || [c isSubclassOfClass:[NSDate class]]
                || [c isSubclassOfClass:[NSData class]]






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