Guard empty OpenAL listener slices

gumble/go-openal/openal/listener.go

@@ -40,6 +40,9 @@ func (self Listener) Set3f(param int32, value1, value2, value3 float32) {
 
 // Renamed, was Listenerfv.
 func (self Listener) Setfv(param int32, values []float32) {
+	if len(values) == 0 {
+		return
+	}
 	C.walListenerfv(C.ALenum(param), unsafe.Pointer(&values[0]))
 }
 
@@ -55,6 +58,9 @@ func (self Listener) Set3i(param int32, value1, value2, value3 int32) {
 
 // Renamed, was Listeneriv.
 func (self Listener) Setiv(param int32, values []int32) {
+	if len(values) == 0 {
+		return
+	}
 	C.walListeneriv(C.ALenum(param), unsafe.Pointer(&values[0]))
 }
 
@@ -72,6 +78,9 @@ func (self Listener) Get3f(param int32) (v1, v2, v3 float32) {
 
 // Renamed, was GetListenerfv.
 func (self Listener) Getfv(param int32, values []float32) {
+	if len(values) == 0 {
+		return
+	}
 	C.walGetListenerfv(C.ALenum(param), unsafe.Pointer(&values[0]))
 	return
 }
@@ -90,6 +99,9 @@ func (self Listener) Get3i(param int32) (v1, v2, v3 int32) {
 
 // Renamed, was GetListeneriv.
 func (self Listener) Getiv(param int32, values []int32) {
+	if len(values) == 0 {
+		return
+	}
 	C.walGetListeneriv(C.ALenum(param), unsafe.Pointer(&values[0]))
 }
 

gumble/go-openal/openal/openal_test.go

@@ -45,6 +45,11 @@ func TestEmptySliceAPIsDoNotPanic(t *testing.T) {
 	source.Getiv(0, nil)
 	source.QueueBuffers(nil)
 	source.UnqueueBuffers(nil)
+	var listener openal.Listener
+	listener.Setfv(0, nil)
+	listener.Setiv(0, nil)
+	listener.Getfv(0, nil)
+	listener.Getiv(0, nil)
 	var buffer openal.Buffer
 	buffer.SetData(openal.FormatMono8, nil, 0)
 	buffer.SetDataInt16(openal.FormatMono16, nil, 0)