added a cast to ADD_POINTERS macro

diff --git a/src/mesa/main/imports.h b/src/mesa/main/imports.h
index 86480c8..a928b20 100644 (file)
--- a/src/mesa/main/imports.h
+++ b/src/mesa/main/imports.h
@@ -100,7 +100,7 @@ extern "C" {
  * this macro.
  * Both pointers/offsets are expressed in bytes.
  */
-#define ADD_POINTERS(A, B)  ( (A) + (unsigned long) (B) )
+#define ADD_POINTERS(A, B)  ( (GLubyte *) (A) + (unsigned long) (B) )
 
 
 /**********************************************************************/