[Bug c++/88738] treat shared_ptr and unique_ptr more like plain old pointers

[drepper.fsp+rhbz at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88738

--- Comment #1 from Ulrich Drepper <drepper.fsp+rhbz at gmail dot com> ---
BTW, this also applies to the "unused variable" warning as in the code below
but clang doesn't warn about that either.

#include <memory>

using type = std::shared_ptr<int>;
type g;

int f(int a) {
  auto p = g;
  return a+1;
}