From 111366fca0352df45459ee8dc3fa6d8dcc337d92 Mon Sep 17 00:00:00 2001
From: "Alex Lam S.L" <alexlamsl@gmail.com>
Date: Mon, 21 Jun 2021 04:12:45 +0100
Subject: fix corner case in `collapse_vars` (#5018)

fixes #5017
---
 test/compress/destructured.js | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

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

diff --git a/test/compress/destructured.js b/test/compress/destructured.js
index 41e337be..140d48e1 100644
--- a/test/compress/destructured.js
+++ b/test/compress/destructured.js
@@ -2625,3 +2625,25 @@ issue_4994: {
     expect_stdout: "PASS"
     node_version: ">=6"
 }
+
+issue_5017: {
+    options = {
+        collapse_vars: true,
+        reduce_vars: true,
+        toplevel: true,
+    }
+    input: {
+        var a = function() {};
+        var b = c = a;
+        var c = [ c ] = [ c ];
+        console.log(c[0] === a ? "PASS" : "FAIL");
+    }
+    expect: {
+        var a = function() {};
+        var b = a;
+        var c = [ c ] = [ c = a ];
+        console.log(c[0] === a ? "PASS" : "FAIL");
+    }
+    expect_stdout: "PASS"
+    node_version: ">=6"
+}
-- 
cgit v1.2.3