From 77552d9e6972ece5340db06e6a2501a343702f85 Mon Sep 17 00:00:00 2001
From: "Alex Lam S.L" <alexlamsl@gmail.com>
Date: Tue, 1 Feb 2022 11:35:03 +0000
Subject: [PATCH] fix corner case in `inline` (#5329)

fixes #5328
---
 lib/compress.js            |  8 +++++---
 test/compress/functions.js | 17 +++++++++++++++++
 2 files changed, 22 insertions(+), 3 deletions(-)

diff --git a/lib/compress.js b/lib/compress.js
index e5e65022..6b611b73 100644
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -13170,9 +13170,11 @@ Compressor.prototype.compress = function(node) {
                 scope = scope.parent_scope;
             }
             if (!member(scope, compressor.stack)) return;
-            if (scope instanceof AST_Toplevel && fn.variables.size() > (arrow ? 0 : 1)) {
-                if (!compressor.toplevel.vars) return;
-                if (fn.functions.size() > 0 && !compressor.toplevel.funcs) return;
+            if (scope instanceof AST_Toplevel) {
+                if (fn.variables.size() > (arrow ? 0 : 1)) {
+                    if (!compressor.toplevel.vars) return;
+                    if (fn.functions.size() > 0 && !compressor.toplevel.funcs) return;
+                }
                 defined.set("arguments", true);
             }
             var async = is_async(fn);
diff --git a/test/compress/functions.js b/test/compress/functions.js
index 0e55e753..7559755b 100644
--- a/test/compress/functions.js
+++ b/test/compress/functions.js
@@ -8134,3 +8134,20 @@ issue_5316_2: {
     }
     expect_stdout: "PASS"
 }
+
+issue_5328: {
+    options = {
+        inline: true,
+    }
+    input: {
+        (function(arguments) {
+            console.log(Object.keys(arguments).join());
+        })(this);
+    }
+    expect: {
+        (function(arguments) {
+            console.log(Object.keys(arguments).join());
+        })(this);
+    }
+    expect_stdout: ""
+}