detect boolean context across IIFEs (#3461)

1 files changed, 31 insertions, 0 deletions

diff --git a/test/compress/evaluate.js b/test/compress/evaluate.js
index 0ac117fe..22c87b70 100644
--- a/test/compress/evaluate.js
+++ b/test/compress/evaluate.js
@@ -1757,3 +1757,34 @@ issue_3387_2: {
     }
     expect_stdout: "NaN"
 }
+
+iife_boolean_context: {
+    options = {
+        booleans: true,
+        evaluate: true,
+    }
+    input: {
+        console.log(function() {
+            return Object(1) || false;
+        }() ? "PASS" : "FAIL");
+        console.log(function() {
+            return [].length || true;
+        }() ? "PASS" : "FAIL");
+    }
+    expect: {
+        console.log(function() {
+            return Object(1);
+        }() ? "PASS" : "FAIL");
+        console.log(function() {
+            return [].length, 1;
+        }() ? "PASS" : "FAIL");
+    }
+    expect_stdout: [
+        "PASS",
+        "PASS",
+    ]
+    expect_warnings: [
+        "WARN: Dropping side-effect-free || [test/compress/evaluate.js:2,19]",
+        "WARN: Boolean || always true [test/compress/evaluate.js:5,19]",
+    ]
+}