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Is this correct behavior?

Moving from GCC 4 to 3.3 is a much larger step for me than moving from CW to Xcode. I encountered several small issues with code that used to work but suddenly stopped. Most where easy to get around by rearranging the code.

Now I'm totally stuck on a problem. I have code that used to work fine but stopped to work either when I moved from GCC 4 to 3.3 or I changed some settings in Xcode. Have I been getting away with something illegal before or is there a problem/setting I missed?

This does not work (key is not found in dictionary):
-------------
#define kMyKey CFSTR("myKey")

CFMutableDictionaryRef dictRef = ::CFDictionaryCreateMutable(nil, 0,nil,nil);
CFDictionarySetValue(dictRef,kMyKey,CFSTR("myValue"));
CFStringRef returnedValue = CFDictionaryGetValue(dictRef,kMyKey);
CFShow(returnedValue); // null

This works:
-------------
#define kMyKey CFSTR("myKey")

CFStringRef key = kMyKey;
CFMutableDictionaryRef dictRef = ::CFDictionaryCreateMutable(nil, 0,nil,nil);
CFDictionarySetValue(dictRef,key,CFSTR("myValue"));
CFStringRef returnedValue = CFDictionaryGetValue(dictRef,key);
CFShow(returnedValue); // "myKey"

Grateful for any hints!

Rune
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