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-rw-r--r--js/src/jit-test/tests/arrow-functions/block-2.js4
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diff --git a/js/src/jit-test/tests/arrow-functions/block-2.js b/js/src/jit-test/tests/arrow-functions/block-2.js
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+++ b/js/src/jit-test/tests/arrow-functions/block-2.js
@@ -0,0 +1,4 @@
+// Block arrow functions don't return the last expression-statement value automatically.
+
+var f = a => { a + 1; };
+assertEq(f(0), undefined);