--- /dev/null
+--- VirtualBox-6.0.8/include/VBox/VBoxGL2D.h~ 2019-05-13 15:23:12.000000000 +0200
++++ VirtualBox-6.0.8/include/VBox/VBoxGL2D.h 2019-07-13 17:31:31.183251092 +0200
+@@ -111,7 +111,7 @@
+ typedef GLvoid (APIENTRY *PFNVBOXVHWA_UNIFORM4I)(GLint location, GLint v0, GLint v1, GLint v2, GLint v3);
+
+ /* GL_ARB_pixel_buffer_object*/
+-#ifndef Q_WS_MAC
++#if 0
+ /* apears to be defined on mac */
+ typedef ptrdiff_t GLsizeiptr;
+ #endif