1 files changed, 4 insertions, 0 deletions

diff --git a/lobject.h b/lobject.h
index ddcf609c..ea3511de 100644
--- a/lobject.h
+++ b/lobject.h
@@ -588,6 +588,10 @@ typedef struct UpVal {
 } UpVal;
 
 
+/* variant for "To Be Closed" upvalues */
+#define LUA_TUPVALTBC   (LUA_TUPVAL | (1 << 4))
+
+
 #define ClosureHeader \
         CommonHeader; lu_byte nupvalues; GCObject *gclist