From 9af12c3f6dc0258fe0b045647cbae73bc71ffd8e Mon Sep 17 00:00:00 2001
From: SeungJe Jeong <88067455+seungje0612@users.noreply.github.com>
Date: Wed, 15 Jul 2026 23:43:29 +0900
Subject: [PATCH] Fix overflow handling for inplace sequence repetition (#8270)

---
 Lib/test/test_list.py     | 1 -
 crates/vm/src/sequence.rs | 6 ++++++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/Lib/test/test_list.py b/Lib/test/test_list.py
index e320a2008..40cec2261 100644
--- a/Lib/test/test_list.py
+++ b/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()
diff --git a/crates/vm/src/sequence.rs b/crates/vm/src/sequence.rs
index 0bc12fd26..0bc35181b 100644
--- a/crates/vm/src/sequence.rs
+++ b/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 {