From aef70652620741e6312ab8b99ea38d894cf999a2 Mon Sep 17 00:00:00 2001
From: "Alex Lam S.L" <alexlamsl@gmail.com>
Date: Wed, 23 Nov 2022 01:26:08 +0200
Subject: [PATCH] fix corner case in `inline` (#5742)

fixes #5741
---
 lib/compress.js      |  1 +
 test/compress/let.js | 34 ++++++++++++++++++++++++++++++++++
 2 files changed, 35 insertions(+)

diff --git a/lib/compress.js b/lib/compress.js
index f426cf028d5..494f9db16b4 100644
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -11160,6 +11160,7 @@ Compressor.prototype.compress = function(node) {
         function append_var(decls, expressions, name, value) {
             var def = name.definition();
             if (!scope.var_names().has(name.name)) {
+                if (def.first_decl === name) def.first_decl = null;
                 scope.var_names().set(name.name, true);
                 decls.push(make_node(AST_VarDef, name, {
                     name: name,
diff --git a/test/compress/let.js b/test/compress/let.js
index 69d0d370b6e..7e5185c987c 100644
--- a/test/compress/let.js
+++ b/test/compress/let.js
@@ -2294,3 +2294,37 @@ issue_5591: {
     ]
     node_version: ">=4"
 }
+
+issue_5741: {
+    options = {
+        inline: true,
+        join_vars: true,
+        reduce_vars: true,
+    }
+    input: {
+        "use strict";
+        (function(a) {
+            let b = function() {
+                var c = a;
+                console.log(c);
+            }();
+            function g() {
+                a++;
+                b;
+            }
+        })("PASS");
+    }
+    expect: {
+        "use strict";
+        (function(a) {
+            let b = (c = a, void console.log(c));
+            var c;
+            function g() {
+                a++;
+                b;
+            }
+        })("PASS");
+    }
+    expect_stdout: "PASS"
+    node_version: ">=4"
+}