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Re: clang versions for libobjc2


From: David Chisnall
Subject: Re: clang versions for libobjc2
Date: Tue, 19 Feb 2019 20:11:46 +0000

On 19 Feb 2019, at 18:55, Andreas Fink <address@hidden> wrote:
> 
> There is definitively some nonsense  happening when library A has an object 
> wich librarby B is subclassing and App usese library B and sets a property of 
> the superclass library A.

This is a known issue with the pre-2.0 ABI on Linux and was one of the 
motivations for the new ABI.  It began to appear with fairly recent ld-linux.so 
and has become deterministic with subsequent releases.  You will see this on 
*any* libobjc2 release with *any* version of clang on *any* system that uses 
glibc’s run-time linker.  

I don’t know if it appears on Android with the bionic run-time linker, it does 
not appear on any other platform that I’ve tested.

David




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