diff --git a/test/compress/collapse_vars.js b/test/compress/collapse_vars.js
index 046daf9f..b3617816 100644
--- a/test/compress/collapse_vars.js
+++ b/test/compress/collapse_vars.js
@@ -4136,6 +4136,34 @@ return_1: {
 }
 
 return_2: {
+    options = {
+        collapse_vars: true,
+        unused: true,
+    }
+    input: {
+        var log = console.log;
+        function f(b, c) {
+            var a = c();
+            if (b) return b;
+            log(a);
+        }
+        f(false, function() { return 1 });
+        f(true, function() { return 2 });
+    }
+    expect: {
+        var log = console.log;
+        function f(b, c) {
+            var a = c();
+            if (b) return b;
+            log(a);
+        }
+        f(false, function() { return 1 });
+        f(true, function() { return 2 });
+    }
+    expect_stdout: "1"
+}
+
+return_3: {
     options = {
         collapse_vars: true,
         unused: true,