12 files changed, 14 insertions, 14 deletions
diff --git a/core/math/aabb.h b/core/math/aabb.h
index 2eaaafa27d..3d19410ddf 100644
--- a/core/math/aabb.h
+++ b/core/math/aabb.h
@@ -41,7 +41,7 @@
  */
 class Variant;
 
-class AABB {
+class _NO_DISCARD_ AABB {
 public:
 	Vector3 position;
 	Vector3 size;
diff --git a/core/math/basis.h b/core/math/basis.h
index 709f2cb3cf..802da82089 100644
--- a/core/math/basis.h
+++ b/core/math/basis.h
@@ -34,7 +34,7 @@
 #include "core/math/quaternion.h"
 #include "core/math/vector3.h"
 
-class Basis {
+class _NO_DISCARD_ Basis {
 private:
 	void _set_diagonal(const Vector3 &p_diag);
 
diff --git a/core/math/color.h b/core/math/color.h
index 6c09f7941c..72a4a5f8be 100644
--- a/core/math/color.h
+++ b/core/math/color.h
@@ -34,7 +34,7 @@
 #include "core/math/math_funcs.h"
 #include "core/string/ustring.h"
 
-struct Color {
+struct _NO_DISCARD_ Color {
 	union {
 		struct {
 			float r;
diff --git a/core/math/face3.h b/core/math/face3.h
index 5a34858ccb..3dbbca09e0 100644
--- a/core/math/face3.h
+++ b/core/math/face3.h
@@ -36,7 +36,7 @@
 #include "core/math/transform_3d.h"
 #include "core/math/vector3.h"
 
-class Face3 {
+class _NO_DISCARD_ Face3 {
 public:
 	enum Side {
 		SIDE_OVER,
diff --git a/core/math/plane.h b/core/math/plane.h
index bac946502b..8cb6f62b3b 100644
--- a/core/math/plane.h
+++ b/core/math/plane.h
@@ -35,7 +35,7 @@
 
 class Variant;
 
-class Plane {
+class _NO_DISCARD_ Plane {
 public:
 	Vector3 normal;
 	real_t d = 0;
diff --git a/core/math/quaternion.h b/core/math/quaternion.h
index cf3762e090..2575d7d229 100644
--- a/core/math/quaternion.h
+++ b/core/math/quaternion.h
@@ -36,7 +36,7 @@
 #include "core/math/vector3.h"
 #include "core/string/ustring.h"
 
-class Quaternion {
+class _NO_DISCARD_ Quaternion {
 public:
 	union {
 		struct {
diff --git a/core/math/rect2.h b/core/math/rect2.h
index f34550bef1..4ea24e8f88 100644
--- a/core/math/rect2.h
+++ b/core/math/rect2.h
@@ -35,7 +35,7 @@
 
 struct Transform2D;
 
-struct Rect2 {
+struct _NO_DISCARD_ Rect2 {
 	Point2 position;
 	Size2 size;
 
@@ -363,7 +363,7 @@ struct Rect2 {
 	}
 };
 
-struct Rect2i {
+struct _NO_DISCARD_ Rect2i {
 	Point2i position;
 	Size2i size;
 
diff --git a/core/math/transform_2d.h b/core/math/transform_2d.h
index 752a885eba..6c2d51bd9b 100644
--- a/core/math/transform_2d.h
+++ b/core/math/transform_2d.h
@@ -33,7 +33,7 @@
 
 #include "core/math/rect2.h" // also includes vector2, math_funcs, and ustring
 
-struct Transform2D {
+struct _NO_DISCARD_ Transform2D {
 	// Warning #1: basis of Transform2D is stored differently from Basis. In terms of elements array, the basis matrix looks like "on paper":
 	// M = (elements[0][0] elements[1][0])
 	//     (elements[0][1] elements[1][1])
diff --git a/core/math/transform_3d.h b/core/math/transform_3d.h
index c0ef2ecfc1..c16c278e74 100644
--- a/core/math/transform_3d.h
+++ b/core/math/transform_3d.h
@@ -35,7 +35,7 @@
 #include "core/math/basis.h"
 #include "core/math/plane.h"
 
-class Transform3D {
+class _NO_DISCARD_ Transform3D {
 public:
 	Basis basis;
 	Vector3 origin;
diff --git a/core/math/vector2.h b/core/math/vector2.h
index a340036ac7..af40b9e68d 100644
--- a/core/math/vector2.h
+++ b/core/math/vector2.h
@@ -36,7 +36,7 @@
 
 struct Vector2i;
 
-struct Vector2 {
+struct _NO_DISCARD_ Vector2 {
 	static const int AXIS_COUNT = 2;
 
 	enum Axis {
@@ -284,7 +284,7 @@ typedef Vector2 Point2;
 
 /* INTEGER STUFF */
 
-struct Vector2i {
+struct _NO_DISCARD_ Vector2i {
 	enum Axis {
 		AXIS_X,
 		AXIS_Y,
diff --git a/core/math/vector3.h b/core/math/vector3.h
index d7a72b05a8..b62edef40f 100644
--- a/core/math/vector3.h
+++ b/core/math/vector3.h
@@ -37,7 +37,7 @@
 #include "core/string/ustring.h"
 class Basis;
 
-struct Vector3 {
+struct _NO_DISCARD_ Vector3 {
 	static const int AXIS_COUNT = 3;
 
 	enum Axis {
diff --git a/core/math/vector3i.h b/core/math/vector3i.h
index 1416c98057..1564ee9173 100644
--- a/core/math/vector3i.h
+++ b/core/math/vector3i.h
@@ -35,7 +35,7 @@
 #include "core/string/ustring.h"
 #include "core/typedefs.h"
 
-struct Vector3i {
+struct _NO_DISCARD_ Vector3i {
 	enum Axis {
 		AXIS_X,
 		AXIS_Y,