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lua_equal also accepts out-of-range indices

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Roberto Ierusalimschy 2000-08-29 11:52:27 -03:00
parent 9d60598260
commit d396562b5e
1 changed files with 5 additions and 2 deletions
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7
lapi.c
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@ -1,5 +1,5 @@
/*
** $Id: lapi.c,v 1.87 2000/08/14 19:10:14 roberto Exp roberto $
** $Id: lapi.c,v 1.88 2000/08/28 17:57:04 roberto Exp roberto $
** Lua API
** See Copyright Notice in lua.h
*/
@ -116,7 +116,10 @@ int lua_tag (lua_State *L, int index) {
}
int lua_equal(lua_State *L, int index1, int index2) {
return luaO_equalObj(Index(L, index1), Index(L, index2));
StkId o1 = Index(L, index1);
StkId o2 = Index(L, index2);
if (o1 >= L->top || o2 >= L->top) return 0; /* index out-of-range */
else return luaO_equalObj(o1, o2);
}