Variadic argument member function failure.

[kkimdev]

It happens when the variadic argument function is defined as a class member function. Then like the below, rust-bindgen tries to generate ... argument for a non-foreign function, which current rustc doesn't support.

Example:

Header:

// In some class
String& AppendWithFormat(const char* formatString, ...);

Generated code:

// In some impl
    #[inline]
    pub unsafe fn AppendWithFormat(&mut self,
                                   formatString:
                                       *const ::std::os::raw::c_char, ...)
     -> *mut Urho3D_String {
        Urho3D_String_AppendWithFormat(&mut *self, formatString)
    }

Compiling the above generated code:

error: expected pattern, found `...`
    --> src/generated.rs:1203:71
     |
1203 |                                        *const ::std::os::raw::c_char, ...)

I think we should disable code generation for this case and emit a warning for now, unless there is an easy solution for this.

[kkimdev]

@luqmana

[emilio]

#403

[kkimdev]

Maybe we can keep this issue open for a proper future fix?

[emilio]

I think we should open another issue to track that work, I opened #407