[Bug libstdc++/113258] Pre-C++17 code that supplies operator new/delete crashes when mixed with post-C+17 code that uses the align_val_t variants of new/delete

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113258

--- Comment #9 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Nicholas Miell from comment #8) 
> What appears to actually be happening is that the libstdc++ operator
> new(std::size_t size, std::align_val_t alignment) is calling glibc's
> aligned_alloc, and then the libstdc++ operator delete(void* ptr,
> std::align_val_t alignment) is calling std::free(), which is supplied by
> tcmalloc.


aligned_alloc is part of C11 and C++17 and is required to be free'd by
std::free (or free in the C11 case).

So this seems like a bug in tcmalloc not supplying an override of the C11
function aligned_alloc.

You would run into the same issue with a C11 application that does the same
too.