mcgrathr added a comment.

In D85802#3876106 <https://reviews.llvm.org/D85802#3876106>, @dblaikie wrote:

>> The C++ ABI is not part of the Fuchsia system ABI, nor what we call the 
>> "Fuchsia compiler ABI". Different users of C++ are free to use whatever C++ 
>> ABI they like. Only the backend ABI independent of language-specific issues 
>> is necessary to interoperate with other code on Fuchsia.
>
> Sure enough - but I'm still sort of confused by why the Fuschia Clang 
> target/compiler needs more than one C++ ABI. What is it interoperating with? 
> (GCC doesn't have a Fuschia target implemented, does it? So what's it mean to 
> target the GCC C++ ABI? what is compiling the code that Fuschia is trying to 
> interoperate with when Clang targets Fuschia with a non-default C++ ABI?)

When we use GCC we're using the generic ELF targets. I think it's sufficient 
for us to tell you that indeed we do want the option of multiple C++ ABIs to 
select from without justifying everything about our work to a Clang reviewer 
before we can proceed with meeting the requirements of our system.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D85802/new/

https://reviews.llvm.org/D85802

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