diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index 0044494bd3c..71215d54709 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -2133,6 +2133,7 @@ struct gl_shader_state
    GLboolean EmitHighLevelInstructions; /**< IF/ELSE/ENDIF vs. BRA, etc. */
    GLboolean EmitCondCodes;             /**< Use condition codes? */
    GLboolean EmitComments;              /**< Annotated instructions */
+   void *MemPool;
 };