message: in resolution of [Wsign-compare] warning id 9
  Static cast  `int index` for the sake of the single `size_t` to `int` comparison on line 116.
diff: @@ -113,7 +113,7 @@ SubAllocator* AllocatorFactoryRegistry::GetSubAllocator(int numa_node) {
  CHECK_LE(numa_node, port::NUMANumNodes());
  index = 1 + numa_node;
  }
  - if (best_entry->sub_allocators.size() < (index + 1)) {
  + if (best_entry->sub_allocators.size() < static_cast<size_t>(index + 1)) {
  best_entry->sub_allocators.resize(index + 1);
  }
  if (!best_entry->sub_allocators[index].get()) {
  