@@ -74,11 +74,11 @@
 /*!
  * @struct of_range_t OFObject.h ObjFW/OFObject.h
  *
  * @brief A range.
  */
-typedef struct {
+typedef struct OF_BOXABLE {
 	/*! The start of the range */
 	size_t location;
 	/*! The length of the range */
 	size_t length;
 } of_range_t;
@@ -106,11 +106,11 @@
 /*!
  * @struct of_point_t OFObject.h ObjFW/OFObject.h
  *
  * @brief A point.
  */
-typedef struct {
+typedef struct OF_BOXABLE {
 	/*! The x coordinate of the point */
 	float x;
 	/*! The y coordinate of the point */
 	float y;
 } of_point_t;
@@ -133,11 +133,11 @@
 /*!
  * @struct of_dimension_t OFObject.h ObjFW/OFObject.h
  *
  * @brief A dimension.
  */
-typedef struct {
+typedef struct OF_BOXABLE {
 	/*! The width of the dimension */
 	float width;
 	/*! The height of the dimension */
 	float height;
 } of_dimension_t;
@@ -160,11 +160,11 @@
 /*!
  * @struct of_rectangle_t OFObject.h ObjFW/OFObject.h
  *
  * @brief A rectangle.
  */
-typedef struct {
+typedef struct OF_BOXABLE {
 	/*! The point from where the rectangle originates */
 	of_point_t origin;
 	/*! The size of the rectangle */
 	of_dimension_t size;
 } of_rectangle_t;