Fixed another gcc <-> Visual C++ ABI issue

libsdl-org · Oct 20, 2012 · d81ff12 · d81ff12
1 parent cac9f76
commit d81ff12
Showing 1 changed file with 9 additions and 0 deletions.
diff --git a/include/SDL_events.h b/include/SDL_events.h
@@ -438,6 +438,15 @@ typedef union SDL_Event
     SDL_MultiGestureEvent mgesture; /**< Multi Finger Gesture data */
     SDL_DollarGestureEvent dgesture; /**< Multi Finger Gesture data */
     SDL_DropEvent drop;             /**< Drag and drop event data */
+
+    /* This is necessary for ABI compatibility between Visual C++ and GCC
+       Visual C++ will respect the push pack pragma and use 52 bytes for
+       this structure, and GCC will use the alignment of the largest datatype
+       within the union, which is 8 bytes.
+
+       So... we'll add padding to force the size to be 56 bytes for both.
+    */
+    Uint8 padding[56];
 } SDL_Event;