majnemer added a comment.

In http://reviews.llvm.org/D12512#236987, @EricWF wrote:

> In http://reviews.llvm.org/D12512#236984, @majnemer wrote:
>
> > Wouldn't this change be problematic if you threw to code which was 
> > statically linked with a prior version of libcxxabi?
>
>
> How do you mean? As in you have two different versions of libc++abi linked 
> into one executable? If so your already in bad shape.


Say you have two binaries, foo.exe and bar.so.  Foo.exe statically links 
against an older libc++abi and bar.so links against a newer libc++abi.  In this 
instance, our program has two copies of libc++abi statically linked with no ill 
effects and such a scenario was supported before this patch (at least AFAICT).

However, we might have problems after this patch if foo.exe is linked against a 
newer static library than bar.so


http://reviews.llvm.org/D12512



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