[Bug libstdc++/110432] macOS: Segmentation fault when using stdlibc++ from gcc 13.1 in combination with clang-16

["redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110432

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2023-06-27
             Status|UNCONFIRMED                 |NEW
           Keywords|                            |ABI
                 CC|                            |ppalka at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Sascha Scandella from comment #0)
> This leads to a segmentation fault with a simple sample application when
> using clang-16 in combination with stdlibc++.

It's libstdc++

> Would it be possible to change the #if statement such that it would also
> work on macOS when using clang in combination with the stdlibc++?

Still libstdc++ ;-)

> #if !__has_attribute(__init_priority__)
>   static ios_base::Init __ioinit;
> #elif defined(_GLIBCXX_SYMVER_GNU)
>   __extension__ __asm (".globl _ZSt21ios_base_library_initv");
> #endif

Patrick, we talked about this and IIRC your suggestion was to move the
__has_attribute check into configure, so that it depends on GCC, not on
whichever compiler happens to include <iostream> later.