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avoid non-raw accesses to globals when variable may not exist

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Roberto Ierusalimschy
2002-12-04 13:38:25 -02:00
parent 90d7892007
commit 76de732745
2 changed files with 12 additions and 7 deletions
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8
lbaselib.c
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@@ -1,5 +1,5 @@
/*
** $Id: lbaselib.c,v 1.111 2002/11/26 08:45:36 roberto Exp roberto $
** $Id: lbaselib.c,v 1.112 2002/11/26 12:53:29 roberto Exp roberto $
** Basic library
** See Copyright Notice in lua.h
*/
@@ -213,7 +213,8 @@ static int luaB_next (lua_State *L) {
static int luaB_pairs (lua_State *L) {
luaL_checktype(L, 1, LUA_TTABLE);
lua_getglobal(L, "next"); /* return generator, */
lua_pushliteral(L, "next");
lua_rawget(L, LUA_GLOBALSINDEX); /* return generator, */
lua_pushvalue(L, 1); /* state, */
lua_pushnil(L); /* and initial value */
return 3;
@@ -224,7 +225,8 @@ static int luaB_ipairs (lua_State *L) {
lua_Number i = lua_tonumber(L, 2);
luaL_checktype(L, 1, LUA_TTABLE);
if (i == 0 && lua_isnone(L, 2)) { /* `for' start? */
lua_getglobal(L, "ipairs"); /* return generator, */
lua_pushliteral(L, "ipairs");
lua_rawget(L, LUA_GLOBALSINDEX); /* return generator, */
lua_pushvalue(L, 1); /* state, */
lua_pushnumber(L, 0); /* and initial value */
return 3;