[Bug libstdc++/83662] std::aligned_alloc() not available

[Bug libstdc++/83662] std::aligned_alloc() not available

[vital.had at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83662

Sergey Fedorov <vital.had at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |vital.had at gmail dot com

--- Comment #10 from Sergey Fedorov <vital.had at gmail dot com> ---
I just got the same error with gcc 12.3.0:
https://github.com/kokkos/kokkos/issues/6367

/opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_devel_kokkos/kokkos-devel/work/kokkos-ca3687e637c12225e824ee626e69fc9fea8cebd2/core/src/impl/Kokkos_HostSpace.cpp:
In member function 'void* Kokkos::HostSpace::impl_allocate(const char*, size_t,
size_t, Kokkos::Tools::SpaceHandle) const':
/opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_devel_kokkos/kokkos-devel/work/kokkos-ca3687e637c12225e824ee626e69fc9fea8cebd2/core/src/impl/Kokkos_HostSpace.cpp:95:16:
error: 'aligned_alloc' is not a member of 'std'; did you mean 'aligned_union'?
   95 |     ptr = std::aligned_alloc(alignment, size);
      |                ^~~~~~~~~~~~~
      |                aligned_union
make[2]: *** [core/src/CMakeFiles/kokkoscore.dir/impl/Kokkos_HostSpace.cpp.o]
Error 1
make[2]: *** Waiting for unfinished jobs....

Passing -std=c++17 does not help.

[Bug libstdc++/83662] std::aligned_alloc() not available

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83662

--- Comment #11 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Sergey Fedorov from comment #10)
> I just got the same error with gcc 12.3.0:
> https://github.com/kokkos/kokkos/issues/6367

This should be filed seperately as it is a darwin target specific issue; most
likely just powerpc darwin (Mac OS X) which is likely not as well supported as
x86_64 darwin ...

[Bug libstdc++/83662] std::aligned_alloc() not available

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83662

--- Comment #12 from Jonathan Wakely <redi at gcc dot gnu.org> ---
See Bug 69680

[Bug libstdc++/83662] std::aligned_alloc() not available

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83662

--- Comment #13 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Snow Leopard is *ancient*, it didn't support aligned_alloc. According to Bug
92143 you need macOS 10.15 i.e. Catalina.

[Bug libstdc++/83662] std::aligned_alloc() not available

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83662

--- Comment #14 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This bug report is only about declaring it in namespace std if it's already
available in the global namespace in stdlib.h

If your OS doesn't provide it in stdlib.h then that's not a gcc bug, and
libstdc++ can't add 'using ::aligned_alloc;' to cstdlib.