Function operator_new_aligned_impl

system/lib/libcxx/src/new.cpp:117–135

#  if _LIBCPP_HAS_LIBRARY_ALIGNED_ALLOCATION

static void* operator_new_aligned_impl(std::size_t size, std::align_val_t alignment) {
  if (size == 0)
    size = 1;
  if (static_cast<size_t>(alignment) < sizeof(void*))
    alignment = std::align_val_t(sizeof(void*));

  // Try allocating memory. If allocation fails and there is a new_handler,
  // call it to try free up memory, and try again until it succeeds, or until
  // the new_handler decides to terminate.
  void* p;
  while ((p = std::__libcpp_aligned_alloc(static_cast<std::size_t>(alignment), size)) == nullptr) {
    std::new_handler nh = std::get_new_handler();
    if (nh)
      nh();
    else
      break;
  }
  return p;
}

_LIBCPP_OVERRIDABLE_FUNCTION(void*, operator new, (std::size_t size, std::align_val_t alignment)) _THROW_BAD_ALLOC {
  void* p = operator_new_aligned_impl(size, alignment);