[Bug c++/95514] constexpr dynamic memory allocation compile error with inheritance and the this pointer

[pkeir at outlook dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95514

Paul Keir <pkeir at outlook dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |INVALID

--- Comment #2 from Paul Keir <pkeir at outlook dot com> ---
Here is a reduced test case which removes prior use of static_cast and a
pointer reference parameter. 

struct FooBase {
  constexpr FooBase* get_this() { return this; }
  int x;
};

struct Foo : FooBase {};

constexpr bool test()
{
  Foo* pf = new Foo;

  delete pf->get_this();

  return true;
}

constexpr bool b = test();

--- Comment #3 from Paul Keir <pkeir at outlook dot com> ---
The code invokes undefined behaviour; as it tries to delete the object through
pointer to base.