[Bug libstdc++/58938] [4.7/4.8/4.9 Regression] std::exception_ptr is missing on architectures with incomplete atomic int support

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58938

--- Comment #10 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Rafał Rawicki from comment #9)
> I do link with libatomic.so - does that mean, I can patch this conditional
> out (and similar conditional in the exception_ptr.h) and use exception_ptrs?

You could try it.  I don't know if it will work correctly.

> Why it was decided to remove a part of standard library instead of enforcing
> user to link with libatomic.so?

That's the usual policy for the library, we don't define components that rely
on features that are missing from target platforms.