Fix overflow handling for inplace sequence repetition (#8270)

Lib/test/test_list.py

@@ -106,7 +106,6 @@ class ListTest(list_tests.CommonTest):
         x[:] = x
         self.assertEqual(x, [])
 
-    @unittest.skip("TODO: RUSTPYTHON; crash")
     def test_list_resize_overflow(self):
         # gh-97616: test new_allocated * sizeof(PyObject*) overflow
         # check in list_resize()

crates/vm/src/sequence.rs

@@ -122,6 +122,12 @@ where
 
     fn imul(&mut self, vm: &VirtualMachine, n: isize) -> PyResult<()> {
         let n = vm.check_repeat_or_overflow_error(self.as_ref().len(), n)?;
+
+        if n > 1 && core::mem::size_of_val(self.as_ref()) >= MAX_MEMORY_SIZE / n {
+            // TODO: make a global static NoMemory shared exc object and return its reference. 
+            return Err(vm.new_memory_error(""));
+        }
+
         if n == 0 {
             self.as_vec_mut().clear();
         } else if n != 1 {