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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/115664] -Wnonnull-compare breaks templated methods
Date: Wed, 26 Jun 2024 16:33:39 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D115664

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |NEW

--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Oh I take that back here is the testcase which shows the warning:
```
struct Object
{
  template<class T>
    void method(void (*callback)(T*));
  virtual void g();
};

template<class T>
void Object::method(void (*)(T*))
{
  if (dynamic_cast<T*>(this) =3D=3D nullptr)
    throw 1;
}

void c(Object*);

void f(Object *a)
{
  a->method(c);
}
```

I didn't read the original description correctly.=