1 files changed, 10 insertions, 0 deletions
diff --git a/js/src/tests/non262/expressions/optional-chain-class-heritage.js b/js/src/tests/non262/expressions/optional-chain-class-heritage.js
new file mode 100644
index 0000000000..14a99c6392
--- /dev/null
+++ b/js/src/tests/non262/expressions/optional-chain-class-heritage.js
@@ -0,0 +1,10 @@
+// Optional expression can be part of a class heritage expression.
+
+var a = {b: null};
+
+class C extends a?.b {}
+
+assertEq(Object.getPrototypeOf(C.prototype), null);
+
+if (typeof reportCompare === "function")
+  reportCompare(true, true);