Invalid generated code with C++ templated static constant.

Input C/C++ Header

template <class temp>
class MyClass {
public:
	MyClass(){}
	temp options;
	static MyClass *first;
};
template <class temp> MyClass<temp> *MyClass<temp>::first = nullptr;

Bindgen Invocation

$ bindgen wrapper.hpp -- -x c++

Actual Results

#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct MyClass<temp> {
    pub options: temp,
    pub _phantom_0: ::std::marker::PhantomData<::std::cell::UnsafeCell<temp>>,
}
extern "C" {
    pub static mut first: *mut MyClass<temp>;
}

If you try to compile this, you get:

error[E0412]: cannot find type `temp` in this scope
  --> src/main.rs:15:40
   |
15 |     pub static mut first: *mut MyClass<temp>;
   |                                        ^^^^ not found in this scope

Expected Results

No compile errors?

Mitigation

Removing
static MyClass *first;
and
template <class temp> MyClass<temp> *MyClass<temp>::first = nullptr;
and inserting
static MyClass *first = nullptr;
If I'm not wrong, it is equivalent.

Reproduce the report with the shown wrapper.hpp input and bindgen wrapper.hpp -- -x c++, then inspect the generated MyClass<temp> binding and its first declaration. Done means the generated Rust no longer refers to the undeclared temp type and compiles for this templated static-constant case; no source file or test is named in the issue.