1 files changed, 15 insertions, 0 deletions
diff --git a/third_party/rust/mp4parse/tests/overflow.rs b/third_party/rust/mp4parse/tests/overflow.rs
new file mode 100644
index 0000000000..ce5dc52247
--- /dev/null
+++ b/third_party/rust/mp4parse/tests/overflow.rs
@@ -0,0 +1,15 @@
+/// Verify we're built with run-time integer overflow detection.
+
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at https://mozilla.org/MPL/2.0/.
+
+#[test]
+#[should_panic(expected = "attempt to add with overflow")]
+fn overflow_protection() {
+    let edge = u32::max_value();
+    assert_eq!(0u32, edge + 1);
+
+    let edge = u64::max_value();
+    assert_eq!(0u64, edge + 1);
+}