From 77e1bda4265c9a3fe36937dd734fab85db38437c Mon Sep 17 00:00:00 2001
From: "Alex Lam S.L" <alexlamsl@gmail.com>
Date: Thu, 10 Dec 2020 16:48:41 +0000
Subject: improve fix for #4355 (#4357)

---
 test/compress/loops.js | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

(limited to 'test/compress')

diff --git a/test/compress/loops.js b/test/compress/loops.js
index c16fa5bd..acbc8269 100644
--- a/test/compress/loops.js
+++ b/test/compress/loops.js
@@ -1255,3 +1255,28 @@ issue_4240: {
     }
     expect_stdout: "PASS"
 }
+
+issue_4355: {
+    options = {
+        dead_code: true,
+        evaluate: true,
+        loops: true,
+        side_effects: true,
+        unused: true,
+    }
+    input: {
+        while (function() {
+            var a;
+            for (a in console.log("PASS"))
+                var b = 0;
+        }())
+            var c;
+    }
+    expect: {
+        (function() {
+            console.log("PASS");
+        })();
+        var c;
+    }
+    expect_stdout: "PASS"
+}
-- 
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