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FFI: Fix dangling reference to CType in carith_checkarg().

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Reported by Sergey Kaplun. #1108
This commit is contained in:
Mike Pall 2023-10-21 13:11:50 +02:00
parent f72c19e482
commit db944b2b56
1 changed files with 4 additions and 0 deletions
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4
src/lj_carith.c
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@ -42,9 +42,13 @@ static int carith_checkarg(lua_State *L, CTState *cts, CDArith *ca)
p = (uint8_t *)cdata_getptr(p, ct->size);
if (ctype_isref(ct->info)) ct = ctype_rawchild(cts, ct);
} else if (ctype_isfunc(ct->info)) {
CTypeID id0 = i ? ctype_typeid(cts, ca->ct[0]) : 0;
p = (uint8_t *)*(void **)p;
ct = ctype_get(cts,
lj_ctype_intern(cts, CTINFO(CT_PTR, CTALIGN_PTR|id), CTSIZE_PTR));
if (i) { /* cts->tab may have been reallocated. */
ca->ct[0] = ctype_get(cts, id0);
}
}
if (ctype_isenum(ct->info)) ct = ctype_child(cts, ct);
ca->ct[i] = ct;