1 files changed, 4 insertions, 0 deletions
diff --git a/env.h b/env.h
index 586d66c32b..3669baa33e 100644
--- a/env.h
+++ b/env.h
@@ -25,10 +25,14 @@ extern struct FRAME {
     char *file;
     int line;
     int iter;
+    int flags;
 } *ruby_frame;
 
 void rb_gc_mark_frame _((struct FRAME *));
 
+#define FRAME_ALLOCA 0
+#define FRAME_MALLOC 1
+
 extern struct SCOPE {
     struct RBasic super;
     ID *local_tbl;