From 641406d4910a8991cbd41b0814fedd5f38958850 Mon Sep 17 00:00:00 2001
From: "Alex Lam S.L" <alexlamsl@gmail.com>
Date: Thu, 19 Nov 2020 03:25:36 +0000
Subject: fix corner cases in `reduce_vars` & `unused` (#4306)

---
 test/compress/const.js | 48 ++++++++++++++++++++++++++++++++++++++++++++++
 test/compress/let.js   | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 100 insertions(+)

(limited to 'test')

diff --git a/test/compress/const.js b/test/compress/const.js
index 7e393d4f..8dbe74da 100644
--- a/test/compress/const.js
+++ b/test/compress/const.js
@@ -1257,3 +1257,51 @@ issue_4290_1: {
     }
     expect_stdout: true
 }
+
+issue_4305_1: {
+    options = {
+        reduce_vars: true,
+        unused: true,
+    }
+    input: {
+        (function() {
+            const arguments = function() {
+                while (console.log("PASS"));
+            };
+            arguments();
+        })();
+    }
+    expect: {
+        (function() {
+            const arguments = function() {
+                while (console.log("PASS"));
+            };
+            arguments();
+        })();
+    }
+    expect_stdout: true
+}
+
+issue_4305_2: {
+    options = {
+        reduce_vars: true,
+        unused: true,
+    }
+    input: {
+        (function(a) {
+            const a = function() {
+                while (console.log("aaaaa"));
+            };
+            a();
+        })();
+    }
+    expect: {
+        (function(a) {
+            const a = function() {
+                while (console.log("aaaaa"));
+            };
+            a();
+        })();
+    }
+    expect_stdout: true
+}
diff --git a/test/compress/let.js b/test/compress/let.js
index 0669b36f..76641c3f 100644
--- a/test/compress/let.js
+++ b/test/compress/let.js
@@ -1134,3 +1134,55 @@ issue_4290_2: {
     expect_stdout: "PASS"
     node_version: ">=4"
 }
+
+issue_4305_1: {
+    options = {
+        reduce_vars: true,
+        unused: true,
+    }
+    input: {
+        (function() {
+            let arguments = function() {
+                while (console.log("PASS"));
+            };
+            arguments();
+        })();
+    }
+    expect: {
+        (function() {
+            let arguments = function() {
+                while (console.log("PASS"));
+            };
+            arguments();
+        })();
+    }
+    expect_stdout: true
+    node_version: ">=6"
+}
+
+issue_4305_2: {
+    options = {
+        reduce_vars: true,
+        unused: true,
+    }
+    input: {
+        "use strict";
+        (function(a) {
+            let a = function() {
+                while (console.log("aaaaa"));
+            };
+            a();
+        })();
+    }
+    expect: {
+        "use strict";
+        (function(a) {
+            let a = function() {
+                while (console.log("aaaaa"));
+            };
+            a();
+        })();
+    }
+    expect_stdout: true
+    node_version: ">=4"
+}
-- 
cgit v1.2.3