From 9b7a13c8c7f06598b3da8da29da4e8e5680cd24e Mon Sep 17 00:00:00 2001
From: "Alex Lam S.L" <alexlamsl@gmail.com>
Date: Mon, 12 Oct 2020 05:43:26 +0100
Subject: fix corner case in `ie8` & `mangle` (#4196)

fixes #4195
---
 test/compress/const.js | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

(limited to 'test')

diff --git a/test/compress/const.js b/test/compress/const.js
index f09dc56f..6cd1124a 100644
--- a/test/compress/const.js
+++ b/test/compress/const.js
@@ -747,3 +747,32 @@ issue_4193: {
     }
     expect_stdout: true
 }
+
+issue_4195: {
+    mangle = {
+        ie8: true,
+    }
+    input: {
+        console.log(function f(a) {
+            (function a() {
+                {
+                    const b = f, a = 0;
+                    b;
+                }
+            })();
+            a && f;
+        }());
+    }
+    expect: {
+        console.log(function f(o) {
+            (function o() {
+                {
+                    const n = f, o = 0;
+                    n;
+                }
+            })();
+            o && f;
+        }());
+    }
+    expect_stdout: "undefined"
+}
-- 
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