From 4c50e36cee4fa2865c9ec56b1abe3227e176b5c5 Mon Sep 17 00:00:00 2001
From: Mike Pall <mike>
Date: Tue, 9 Aug 2011 15:56:07 +0200
Subject: [PATCH] Fix stack check when L->top is above L->maxstack.

---
 src/lj_state.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/lj_state.h b/src/lj_state.h
index d8d6104e..4f6b0a37 100644
--- a/src/lj_state.h
+++ b/src/lj_state.h
@@ -21,8 +21,8 @@ LJ_FUNC void LJ_FASTCALL lj_state_growstack1(lua_State *L);
 
 static LJ_AINLINE void lj_state_checkstack(lua_State *L, MSize need)
 {
-  if ((MSize)(mref(L->maxstack, char) - (char *)L->top) <=
-      need*(MSize)sizeof(TValue))
+  if ((mref(L->maxstack, char) - (char *)L->top) <=
+      need*(ptrdiff_t)sizeof(TValue))
     lj_state_growstack(L, need);
 }