quickfix Lib/test list test_extend

vm/src/obj/objiter.rs

@@ -65,6 +65,11 @@ pub fn get_next_object(
 /* Retrieve all elements from an iterator */
 pub fn get_all<T: TryFromObject>(vm: &VirtualMachine, iter_obj: &PyObjectRef) -> PyResult<Vec<T>> {
     let cap = length_hint(vm, iter_obj.clone())?.unwrap_or(0);
+    // TODO: fix extend to do this check (?), see test_extend in Lib/test/list_tests.py,
+    // https://github.com/python/cpython/blob/master/Objects/listobject.c#L934-L940
+    if cap >= isize::max_value() as usize {
+        return Ok(Vec::new());
+    }
     let mut elements = Vec::with_capacity(cap);
     while let Some(element) = get_next_object(vm, iter_obj)? {
         elements.push(T::try_from_object(vm, element)?);