1 files changed, 1 insertions, 0 deletions

diff --git a/src/lj_frame.h b/src/lj_frame.h
index c123353e..4a2a767a 100644
--- a/src/lj_frame.h
+++ b/src/lj_frame.h
@@ -51,6 +51,7 @@ enum {
 /* Note: this macro does not skip over FRAME_VARG. */
 
 #define setframe_pc(f, pc)      (setmref((f)->fr.tp.pcr, (pc)))
+#define setframe_ftsz(f, sz)    ((f)->fr.tp.ftsz = (sz))
 #define setframe_gc(f, p)       (setgcref((f)->fr.func, (p)))
 
 /* -- C stack frame ------------------------------------------------------- */