[Bug c++/58822] Segfault when calling make_shared

["michi at triodia dot com" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58822

--- Comment #20 from Michi Henning <michi at triodia dot com> ---
(In reply to Paolo Carlini from comment #19)
> I'm pretty sure it isn't. It's easy to see why: in the testcase are you
> using *all* the facilities provided by std::shared_ptr as standardized? I
> don't think so! Thus just imagine having the class there, and commenting out
> all the member functions you don't use. Likewise for the free functions.
> Also, including <memory> means *a ton* of code which definitely has
> *nothing* to do with std::shared_ptr. Normally, a C++ testcase is less than
> 100 lines without includes. The exceptions are *extremely* rare.

I'm not really sure what else to do here. The code in total only contains
constructors and destructors. Just looking again, I forgot to delete a #include
for <string> in ExceptionImplBase, and I guess I could have deleted the
namespaces as well.

I'm pretty sure that I'm not using anything in shared_ptr that's outside the
standard, and the standard way to get access to shared_ptr is to include
<memory>. If I include something else, I end up in implementation territory,
don't I?

So, what should I do to get the bug report up to scratch? (I've already spent
quite a few hours cutting this down to what it is now from a large project.)