[Bug libstdc++/114865] [13/14/15 Regression] std::atomic::compare_exchange_strong seems to hang under GCC 13 for C++11

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114865

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[13/14/15 Regression]       |[13/14/15 Regression]
                   |std::atomic<X>::compare_exc |std::atomic<X>::compare_exc
                   |hange_strong seems to hang  |hange_strong seems to hang
                   |under GCC 13 on Ubuntu      |under GCC 13  for C++11
                   |23.04                       |

--- Comment #10 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
#if __cplusplus >= 201402L && __has_builtin(__builtin_clear_padding)
        if _GLIBCXX17_CONSTEXPR (__atomic_impl::__maybe_has_padding<_Tp>())
          __builtin_clear_padding(std::__addressof(_M_i));
#endif

So yes it is definitely dependent on C++ level ...
That is for C++14+ it is working correctly.