1 files changed, 73 insertions, 1 deletions
diff --git a/test/compress/collapse_vars.js b/test/compress/collapse_vars.js
index aa8b89c9..c042f969 100644
--- a/test/compress/collapse_vars.js
+++ b/test/compress/collapse_vars.js
@@ -1599,7 +1599,7 @@ collapse_vars_constants: {
     }
 }
 
-collapse_vars_arguments: {
+collapse_vars_arguments_1: {
     options = {
         booleans: true,
         collapse_vars: true,
@@ -1636,6 +1636,78 @@ collapse_vars_arguments: {
     expect_stdout: true
 }
 
+collapse_vars_arguments_2: {
+    options = {
+        collapse_vars: true,
+    }
+    input: {
+        function log(a, b) {
+            console.log(b);
+        }
+        function f(c) {
+            var d = arguments[0];
+            c = "FAIL";
+            log(c, d);
+        }
+        f();
+        f("PASS");
+    }
+    expect: {
+        function log(a, b) {
+            console.log(b);
+        }
+        function f(c) {
+            var d = arguments[0];
+            log(c = "FAIL", d);
+        }
+        f();
+        f("PASS");
+    }
+    expect_stdout: [
+        "undefined",
+        "PASS",
+    ]
+}
+
+collapse_vars_arguments_3: {
+    options = {
+        collapse_vars: true,
+    }
+    input: {
+        function log(a, b) {
+            console.log(b);
+        }
+        function f(c) {
+            var args = arguments;
+            console.log(c);
+            var d = args[0];
+            c = "FAIL";
+            log(c, d);
+        }
+        f();
+        f("PASS");
+    }
+    expect: {
+        function log(a, b) {
+            console.log(b);
+        }
+        function f(c) {
+            var args = arguments;
+            console.log(c);
+            var d = args[0];
+            log(c = "FAIL", d);
+        }
+        f();
+        f("PASS");
+    }
+    expect_stdout: [
+        "undefined",
+        "undefined",
+        "PASS",
+        "PASS",
+    ]
+}
+
 collapse_vars_short_circuit: {
     options = {
         booleans: true,