Dear colleagues
Ihave built swiftc, libswiftCore.so and other outputs under 
armv7--linux-gnueabi with open source ObjC-runtime and enabled ObjC interop. I 
linked the simplest swift-application, which creates the instance of custom 
ObjC-class and call instance-method of it. If somebody interested, I am ready 
to provide patches, though I know that it can not be included into upstream. 
But there is not success yet. When I try to run application under armv7l-linux, 
I get following error:

Error: Instance variables in _SwiftNativeNSArrayBase overlap superclass 
NSArray.  Offset of first instance variable, __magic_refCount, is 4.  
Last instance variable in superclass, _sortedArrayHint, ends at offset 
8.  This probably means that you are subclassing aclass from a library, 
which has changed in a binary-incompatibleway.

Could anybody explain it? I think, it is explained by some difference between 
NSArray-implementation in XCode framework and in my opensource library. Is it 
true? And in what way I can try to fix it? May be, to modify my NSArray-source, 
but how?
Thanks in advance for answer.
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