Fix compilation errors and warnings with Clang-6

intern/cycles/render/camera.cpp

@@ -716,7 +716,7 @@ float Camera::world_to_raster_size(float3 P)
 		float3 D = transform_point(&worldtocamera, P);
 		float dist = len(D);
 
-		Ray ray = {0};
+		Ray ray = {{0}};
 
 		/* Distortion can become so great that the results become meaningless, there
 		 * may be a better way to do this, but calculating differentials from the

source/blender/editors/space_logic/logic_window.c

@@ -964,7 +964,7 @@ static void draw_sensor_collision(uiLayout *layout, PointerRNA *ptr, bContext *C
 	uiItemR(row, ptr, "use_pulse", UI_ITEM_R_TOGGLE, NULL, ICON_NONE);
 	uiItemR(row, ptr, "use_material", UI_ITEM_R_TOGGLE, NULL, ICON_NONE);
 
-	switch (RNA_boolean_get(ptr, "use_material")) {
+	switch (RNA_enum_get(ptr, "use_material")) {
 		case SENS_COLLISION_PROPERTY:
 			uiItemR(split, ptr, "property", 0, NULL, ICON_NONE);
 			break;

source/blender/windowmanager/intern/wm_files.c

@@ -641,7 +641,7 @@ bool WM_file_read(bContext *C, const char *filepath, ReportList *reports)
 struct {
 	char app_template[64];
 	bool override;
-} wm_init_state_app_template = {0};
+} wm_init_state_app_template = {{0}};
 
 /**
  * Used for setting app-template from the command line: