Encode and Decode an NSMapTableKeyCallBacks: expected struct and got unsigned int

[Philip Mötteli]

Hi


I encode some information about a MapTable:

        - (void)ecnodeWithCoder:(NSCoder *)aCoder
        {
                …
		[aCoder encodeValueOfObjCType:@encode(NSMapTableKeyCallBacks) 
at:&keyCallBack];
                …
        }


I decode it like this:

        - initWithCoder:(NSCoder *)aCoder
        {
                …
		[aCoder decodeValueOfObjCType:@encode(NSMapTableKeyCallBacks) 
at:&keyCallBack];
                …
        }


This decoding translates into the following call of the unarchiver's 
decodeValueOfObjCType:

	- (void)decodeValueOfObjCType:"{_NSMapTableKeyCallBacks=^?^?^?^?^?^v}" 
at:0x…


During decoding, the typeCheck function is called:

        typeCheck(t1='{', t2=6 '\006')


Which in turn looks up its parameters in the type map:

        type_map[('\006' & _GSC_MASK)] != '{'


Unfortunately this map doesn't give a satisfying value back:

        Exception: NSInternalInconsistencyException
        REASON: expected struct and got unsigned int


Is this a bug? I mean, I can't change a lot here. Everything is handled 
by the system.


Thanks!
Phil