1 files changed, 27 insertions, 0 deletions
diff --git a/test/compress/evaluate.js b/test/compress/evaluate.js
index 9fa65202..46a92ee3 100644
--- a/test/compress/evaluate.js
+++ b/test/compress/evaluate.js
@@ -3047,3 +3047,30 @@ issue_4214: {
     }
     expect_stdout: "NaN"
 }
+
+issue_4271: {
+    options = {
+        evaluate: true,
+        unsafe: true,
+    }
+    input: {
+        ({
+            p: null,
+            q: (console.log("foo"), 42),
+            p: function() {}
+        })[console.log("bar"), "p"] && console.log("PASS");
+    }
+    expect: {
+        ({
+            p: null,
+            q: (console.log("foo"), 42),
+            p: function() {}
+        })[console.log("bar"), "p"],
+        console.log("PASS");
+    }
+    expect_stdout: [
+        "foo",
+        "bar",
+        "PASS",
+    ]
+}