1 files changed, 11 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/parser/bug-1263355-42.js b/js/src/jit-test/tests/parser/bug-1263355-42.js
new file mode 100644
index 0000000000..b874006a4b
--- /dev/null
+++ b/js/src/jit-test/tests/parser/bug-1263355-42.js
@@ -0,0 +1,11 @@
+// |jit-test| error: ReferenceError
+
+function f() {
+  switch (2) {
+    case 1:
+      x = 1;
+    case (x, 2):
+      let x;
+  }
+}
+f();