1 files changed, 1 insertions, 0 deletions

diff --git a/src/lj_bcread.c b/src/lj_bcread.c
index cea20e90..898f029c 100644
--- a/src/lj_bcread.c
+++ b/src/lj_bcread.c
@@ -394,6 +394,7 @@ static int bcread_header(LexState *ls)
       bcread_byte(ls) != BCDUMP_VERSION) return 0;
   bcread_flags(ls) = flags = bcread_uleb128(ls);
   if ((flags & ~(BCDUMP_F_KNOWN)) != 0) return 0;
+  if ((flags & BCDUMP_F_FR2) != LJ_FR2*BCDUMP_F_FR2) return 0;
   if ((flags & BCDUMP_F_FFI)) {
 #if LJ_HASFFI
     lua_State *L = ls->L;