From 21d549caf6a823d5bd93d1fbf386160d92ebdb38 Mon Sep 17 00:00:00 2001
From: Lee Dogeon <dev.moreal@gmail.com>
Date: Sat, 14 Mar 2026 15:47:45 +0900
Subject: [PATCH] Handle chr() range checks without Rust integer overflow
 (#7422)

---
 Lib/test/test_builtin.py         | 1 -
 crates/vm/src/stdlib/builtins.rs | 2 +-
 2 files changed, 1 insertion(+), 2 deletions(-)

diff --git a/Lib/test/test_builtin.py b/Lib/test/test_builtin.py
index 9be8ed716..29047880f 100644
--- a/Lib/test/test_builtin.py
+++ b/Lib/test/test_builtin.py
@@ -367,7 +367,6 @@ class BuiltinTest(ComplexesAreIdenticalMixin, unittest.TestCase):
         c3 = C3()
         self.assertTrue(callable(c3))
 
-    @unittest.expectedFailure # TODO: RUSTPYTHON; OverflowError: Python int too large to convert to Rust isize
     def test_chr(self):
         self.assertEqual(chr(0), '\0')
         self.assertEqual(chr(32), ' ')
diff --git a/crates/vm/src/stdlib/builtins.rs b/crates/vm/src/stdlib/builtins.rs
index c1f7943e8..a506f7746 100644
--- a/crates/vm/src/stdlib/builtins.rs
+++ b/crates/vm/src/stdlib/builtins.rs
@@ -88,7 +88,7 @@ mod builtins {
     #[pyfunction]
     fn chr(i: PyIntRef, vm: &VirtualMachine) -> PyResult<CodePoint> {
         let value = i
-            .try_to_primitive::<isize>(vm)?
+            .as_bigint()
             .to_u32()
             .and_then(CodePoint::from_u32)
             .ok_or_else(|| vm.new_value_error("chr() arg not in range(0x110000)"))?;