From dd3519ab89078fb270797332f0d661b5f6b7612a Mon Sep 17 00:00:00 2001
From: Roberto Ierusalimschy <roberto@inf.puc-rio.br>
Date: Fri, 25 Jan 2008 11:42:12 -0200
Subject: [PATCH] comment (LUA_GLOBALSINDEX does not need write barrier in
 lua_replace)

---
 lapi.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lapi.c b/lapi.c
index bb9927d9..a33fa761 100644
--- a/lapi.c
+++ b/lapi.c
@@ -1,5 +1,5 @@
 /*
-** $Id: lapi.c,v 2.61 2007/08/07 16:53:40 roberto Exp roberto $
+** $Id: lapi.c,v 2.62 2007/11/28 18:27:38 roberto Exp roberto $
 ** Lua API
 ** See Copyright Notice in lua.h
 */
@@ -193,6 +193,7 @@ LUA_API void lua_replace (lua_State *L, int idx) {
     if (idx < LUA_GLOBALSINDEX)  /* function upvalue? */
       luaC_barrier(L, curr_func(L), L->top - 1);
   }
+  /* LUA_GLOBALSINDEX does not need gc barrier (threads are never black) */
   L->top--;
   lua_unlock(L);
 }