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Better handling of size limit when resizing a table

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Avoid silent conversions from int to unsigned int when calling
'luaH_resize'; avoid silent conversions from lua_Integer to int in
'table.create'; MAXASIZE corrected for the new implementation of arrays;
'luaH_resize' checks explicitly whether new size respects MAXASIZE.
(Even constructors were bypassing that check.)
This commit is contained in:
Roberto Ierusalimschy
2024-02-07 13:39:54 -03:00
parent c31d6774ac
commit 0c9bec0d38
6 changed files with 53 additions and 37 deletions
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6
ltablib.c
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@@ -59,8 +59,10 @@ static void checktab (lua_State *L, int arg, int what) {
static int tcreate (lua_State *L) {
int sizeseq = (int)luaL_checkinteger(L, 1);
int sizerest = (int)luaL_optinteger(L, 2, 0);
lua_Unsigned sizeseq = (lua_Unsigned)luaL_checkinteger(L, 1);
lua_Unsigned sizerest = (lua_Unsigned)luaL_optinteger(L, 2, 0);
luaL_argcheck(L, sizeseq <= UINT_MAX, 1, "out of range");
luaL_argcheck(L, sizerest <= UINT_MAX, 2, "out of range");
lua_createtable(L, sizeseq, sizerest);
return 1;
}