Keep maximum frame extent in snap->topslot.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/lj_jit.h b/src/lj_jit.h
index e80547ab..11dc9737 100644
--- a/src/lj_jit.h
+++ b/src/lj_jit.h
@@ -138,9 +138,9 @@ typedef struct SnapShot {
   uint16_t mapofs;      /* Offset into snapshot map. */
   IRRef1 ref;           /* First IR ref for this snapshot. */
   uint8_t nslots;       /* Number of valid slots. */
+  uint8_t topslot;      /* Maximum frame extent. */
   uint8_t nent;         /* Number of compressed entries. */
   uint8_t count;        /* Count of taken exits for this snapshot. */
-  uint8_t unused;
 } SnapShot;
 
 #define SNAPCOUNT_DONE  255     /* Already compiled and linked a side trace. */