From f85a206b9ed5b39726a2da39680056c09d3f9687 Mon Sep 17 00:00:00 2001
From: "Alex Lam S.L" <alexlamsl@gmail.com>
Date: Tue, 22 Dec 2020 18:16:04 +0000
Subject: fix corner case when parsing expression (#4435)

---
 test/mocha/number-literal.js | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'test/mocha')

diff --git a/test/mocha/number-literal.js b/test/mocha/number-literal.js
index a2b16a9e..61c3a6d6 100644
--- a/test/mocha/number-literal.js
+++ b/test/mocha/number-literal.js
@@ -89,4 +89,13 @@ describe("Number literals", function() {
             }, code);
         });
     });
+    it("Should reject invalid syntax under expression=true", function() {
+        assert.throws(function() {
+            UglifyJS.parse("42.g", {
+                expression: true,
+            });
+        }, function(e) {
+            return e instanceof UglifyJS.JS_Parse_Error;
+        });
+    });
 });
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