2 files changed, 76 insertions, 0 deletions
diff --git a/test/compress/drop-unused.js b/test/compress/drop-unused.js
index 3feb0183..ae1a6e5b 100644
--- a/test/compress/drop-unused.js
+++ b/test/compress/drop-unused.js
@@ -3125,3 +3125,74 @@ issue_4413: {
     }
     expect_stdout: "0"
 }
+
+issue_4464_1: {
+    options = {
+        reduce_vars: true,
+        unused: true,
+    }
+    input: {
+        function f(a) {
+            var a = function() {};
+            return [ arguments, a ];
+        }
+        console.log(typeof f()[1]);
+    }
+    expect: {
+        function f(a) {
+            a = function() {};
+            return [ arguments, a ];
+        }
+        console.log(typeof f()[1]);
+    }
+    expect_stdout: "function"
+}
+
+issue_4464_2: {
+    options = {
+        reduce_vars: true,
+        unused: true,
+    }
+    input: {
+        function f(a) {
+            var a = function() {};
+            return [ arguments, a ];
+        }
+        console.log(typeof f(42)[0][0]);
+    }
+    expect: {
+        function f(a) {
+            a = function() {};
+            return [ arguments, a ];
+        }
+        console.log(typeof f(42)[0][0]);
+    }
+    expect_stdout: "function"
+}
+
+issue_4464_3: {
+    options = {
+        reduce_vars: true,
+        unused: true,
+    }
+    input: {
+        (function a(a) {
+            var a = function() {};
+            return [ arguments[0], a ];
+        })(42).forEach(function(b) {
+            console.log(typeof b);
+        });
+    }
+    expect: {
+        (function(a) {
+            a = function() {};
+            return [ arguments[0], a ];
+        })(42).forEach(function(b) {
+            console.log(typeof b);
+        });
+    }
+    expect_stdout: [
+        "function",
+        "function",
+    ]
+}
diff --git a/test/reduce.js b/test/reduce.js
index f6b54141..48030b0f 100644
--- a/test/reduce.js
+++ b/test/reduce.js
@@ -352,6 +352,11 @@ module.exports = function reduce_test(testcase, minify_options, reduce_options)
                     }
                 }
             }
+            else if (node instanceof U.AST_Spread) {
+                node.start._permute++;
+                CHANGED = true;
+                return node.expression;
+            }
             else if (node instanceof U.AST_Switch) {
                 var expr = [
                     node.expression,                         // switch expression