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Check table requested capacity limits before enabling unprotected mode.

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Lua tables have limits and can overflow, which must be captured in protected mode.
This commit is contained in:
Alex Orlenko
2025-07-07 22:27:53 +01:00
parent 646827a6bb
commit 72f6536efb
1 changed files with 2 additions and 2 deletions
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src/util/mod.rs
+2 -2
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@@ -88,7 +88,7 @@ impl Drop for StackGuard {
#[inline(always)]
pub(crate) unsafe fn push_string(state: *mut ffi::lua_State, s: &[u8], protect: bool) -> Result<()> {
// Always use protected mode if the string is too long
if protect || s.len() > (1 << 30) {
if protect || s.len() >= const { 1 << 30 } {
protect_lua!(state, 0, 1, |state| {
ffi::lua_pushlstring(state, s.as_ptr() as *const c_char, s.len());
})
@@ -122,7 +122,7 @@ pub(crate) unsafe fn push_table(
) -> Result<()> {
let narr: c_int = narr.try_into().unwrap_or(c_int::MAX);
let nrec: c_int = nrec.try_into().unwrap_or(c_int::MAX);
if protect {
if protect || narr >= const { 1 << 30 } || nrec >= const { 1 << 27 } {
protect_lua!(state, 0, 1, |state| ffi::lua_createtable(state, narr, nrec))
} else {
ffi::lua_createtable(state, narr, nrec);