1 files changed, 5 insertions, 1 deletions
diff --git a/ir.h b/ir.h
index a4cc1d8b94..7de7c38532 100644
--- a/ir.h
+++ b/ir.h
@@ -53,7 +53,11 @@ public:
    virtual void accept(ir_visitor *) = 0;
 
 protected:
-   ir_instruction(int mode);
+   ir_instruction(int mode)
+      : mode(mode)
+   {
+      /* empty */
+   }
 
 private:
    /**