cgo question

[Elemer Pixard]

I am trying to call the following C function (simplified version from a C library) from Go,

and I got compiler errors:

typedef void device_t;

void open(device_t **dev) {

}

Go Function:

func Open() {

   var dev C.device_t

   C.open(&&dev)

}

Compiler (v1.17) error:

cannot use _cgo0 (type **_Ctype_void) as type *unsafe.Pointer in argument to _Cfunc_open

How to fix that?

Regards.

[Elemer Pixard]

Correction: The Go function is:

func Open() {

  var dev *C.device_t

  C.open(&dev)

[Elemer Pixard]

Using unsafe.Pointer instead of the C type: C.device_t solved the problem:

func Open() {

   var dev unsafe.Pointer

   C.open(&dev)