From 5d6db413ae9e93b8b6c32802fed82a91427d1966 Mon Sep 17 00:00:00 2001
From: Mike Pall <mike>
Date: Thu, 2 May 2013 02:04:41 +0200
Subject: [PATCH] FFI: Fix tailcall in lowest frame to C function with bool
 result.

---
 src/lj_crecord.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/lj_crecord.c b/src/lj_crecord.c
index b60eb7b3..2d630c85 100644
--- a/src/lj_crecord.c
+++ b/src/lj_crecord.c
@@ -1084,7 +1084,7 @@ static void crec_snap_caller(jit_State *J)
   const BCIns *pc = J->pc;
   TRef ftr = J->base[-1];
   ptrdiff_t delta;
-  if (!frame_islua(base-1))
+  if (!frame_islua(base-1) || J->framedepth <= 0)
     lj_trace_err(J, LJ_TRERR_NYICALL);
   J->pc = frame_pc(base-1); delta = 1+bc_a(J->pc[-1]);
   L->top = base; L->base = base - delta;