From fad7582c9a3cab032c3989a1b36a2ecdf5aaa3c0 Mon Sep 17 00:00:00 2001
From: Roberto Ierusalimschy <roberto@inf.puc-rio.br>
Date: Wed, 7 Jun 2006 09:37:17 -0300
Subject: explicit test for common error (due to compatibility issue)

---
 lapi.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'lapi.c')

diff --git a/lapi.c b/lapi.c
index 358de905..0fa66eb4 100644
--- a/lapi.c
+++ b/lapi.c
@@ -1,5 +1,5 @@
 /*
-** $Id: lapi.c,v 2.53 2006/01/10 12:50:00 roberto Exp roberto $
+** $Id: lapi.c,v 2.54 2006/06/02 15:34:00 roberto Exp roberto $
 ** Lua API
 ** See Copyright Notice in lua.h
 */
@@ -199,6 +199,9 @@ LUA_API void lua_insert (lua_State *L, int idx) {
 LUA_API void lua_replace (lua_State *L, int idx) {
   StkId o;
   lua_lock(L);
+  /* explicit test for incompatible code */
+  if (idx == LUA_ENVIRONINDEX && L->ci == L->base_ci)
+    luaG_runerror(L, "no calling environment");
   api_checknelems(L, 1);
   o = index2adr(L, idx);
   api_checkvalidindex(L, o);
-- 
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