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'cpcall' must ensure correct environment for called function

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This commit is contained in:
Roberto Ierusalimschy 2009-09-30 17:49:47 -03:00
parent d119cf3035
commit ba21aa8b2b
1 changed files with 5 additions and 2 deletions
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7
lstate.c
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@ -1,5 +1,5 @@
/* /*
** $Id: lstate.c,v 2.59 2009/09/21 12:09:52 roberto Exp roberto $ ** $Id: lstate.c,v 2.60 2009/09/28 13:50:19 roberto Exp roberto $
** Global State ** Global State
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@ -98,7 +98,10 @@ static void freestack (lua_State *L) {
*/ */
static int cpcall (lua_State *L) { static int cpcall (lua_State *L) {
lua_CFunction f = *(lua_CFunction *)lua_touserdata(L, 1); lua_CFunction f = *(lua_CFunction *)lua_touserdata(L, 1);
lua_remove(L, 1); lua_remove(L, 1); /* remove f from stack */
/* restore original environment for 'cpcall' */
lua_pushvalue(L, LUA_GLOBALSINDEX);
lua_replace(L, LUA_ENVIRONINDEX);
return f(L); return f(L);
} }