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Bug: 'lua_settop' may use an invalid pointer to stack

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Roberto Ierusalimschy 2022-05-25 17:41:39 -03:00
parent 603b2c64ad
commit 196bb94d66
5 changed files with 34 additions and 12 deletions
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5
lfunc.c
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@ -223,9 +223,9 @@ static void poptbclist (lua_State *L) {
/*
** Close all upvalues and to-be-closed variables up to the given stack
** level.
** level. Return restored 'level'.
*/
void luaF_close (lua_State *L, StkId level, int status, int yy) {
StkId luaF_close (lua_State *L, StkId level, int status, int yy) {
ptrdiff_t levelrel = savestack(L, level);
luaF_closeupval(L, level); /* first, close the upvalues */
while (L->tbclist >= level) { /* traverse tbc's down to that level */
@ -234,6 +234,7 @@ void luaF_close (lua_State *L, StkId level, int status, int yy) {
prepcallclosemth(L, tbc, status, yy); /* close variable */
level = restorestack(L, levelrel);
}
return level;
}