cannot convert unsafe.Pointer(stream) (type unsafe.Pointer) to type _Ctype_void

./portaudio.go:148:135: cannot use _cgo0 (type *_Ctype_void) as type *unsafe.Pointer in argument to _Cfunc_Pa_OpenStream
./portaudio.go:163:145: cannot use _cgo0 (type *_Ctype_void) as type *unsafe.Pointer in argument to _Cfunc_Pa_OpenDefaultStream
./portaudio.go:170:28: cannot convert unsafe.Pointer(stream) (type unsafe.Pointer) to type _Ctype_void
./portaudio.go:178:28: cannot convert unsafe.Pointer(stream) (type unsafe.Pointer) to type _Ctype_void
./portaudio.go:187:28: cannot convert unsafe.Pointer(stream) (type unsafe.Pointer) to type _Ctype_void
./portaudio.go:195:28: cannot convert unsafe.Pointer(stream) (type unsafe.Pointer) to type _Ctype_void
./portaudio.go:203:28: cannot convert unsafe.Pointer(stream) (type unsafe.Pointer) to type _Ctype_void
./portaudio.go:211:28: cannot convert unsafe.Pointer(stream) (type unsafe.Pointer) to type _Ctype_void
./portaudio.go:219:28: cannot convert unsafe.Pointer(stream) (type unsafe.Pointer) to type _Ctype_void
./portaudio.go:219:28: too many errors