From 02308a7b5651ce04703fafc43887636642c5e888 Mon Sep 17 00:00:00 2001
From: "Alex Lam S.L" <alexlamsl@gmail.com>
Date: Tue, 22 Oct 2019 20:36:05 +0800
Subject: fix corner case in `reduce_vars` (#3510)

fixes #3509
---
 test/compress/reduce_vars.js | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

(limited to 'test/compress/reduce_vars.js')

diff --git a/test/compress/reduce_vars.js b/test/compress/reduce_vars.js
index 744cdf1b..ce7c16da 100644
--- a/test/compress/reduce_vars.js
+++ b/test/compress/reduce_vars.js
@@ -6752,3 +6752,31 @@ issue_3377: {
     }
     expect_stdout: "42"
 }
+
+issue_3509: {
+    options = {
+        reduce_vars: true,
+        toplevel: true,
+        unused: true,
+    }
+    input: {
+        function a() {
+            console.log("PASS");
+        }
+        try {
+        } catch (a) {
+            var a;
+        }
+        a();
+    }
+    expect: {
+        try {
+        } catch (a) {
+            var a;
+        }
+        (function() {
+            console.log("PASS");
+        })();
+    }
+    expect_stdout: "PASS"
+}
-- 
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