1 files changed, 1 insertions, 1 deletions
diff --git a/gc.c b/gc.c
index 34e89633b0..582dd66ae0 100644
--- a/gc.c
+++ b/gc.c
@@ -1266,7 +1266,7 @@ obj_free(VALUE obj)
 
       default:
 	rb_bug("gc_sweep(): unknown data type 0x%lx(%p)", 
-	       RANY(obj)->as.basic.flags & T_MASK, obj);
+	       RANY(obj)->as.basic.flags & T_MASK, (void*)obj);
     }
 }