[Bug tree-optimization/109175] error: 'void* __builtin_memset(void*, int, long unsigned int)' writing 4 or more bytes into a region of size 0 overflows the destination [-Werror=stringop-overflow=]

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109175

--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---

  auto in = AllocateAligned<float>(padded);


The pointer returned here could be a nullptr ....

The warning is due to jump threading though.

AllocateAligned calls AllocateAlignedItems

Which could return nullptr:
  if (check != items) {
    return nullptr;
  }

That is checking to make sure there was no wrap around for items*size really.