From 2dcc552ce0404db3cdabb1dd02c8fff5c8dfc4f9 Mon Sep 17 00:00:00 2001
From: "Alex Lam S.L" <alexlamsl@gmail.com>
Date: Sun, 1 Oct 2017 02:10:41 +0800
Subject: [PATCH] trap invalid use of reserved words (#2338)

fixes #2337
---
 lib/parse.js         | 2 ++
 test/mocha/minify.js | 6 ++++++
 2 files changed, 8 insertions(+)

diff --git a/lib/parse.js b/lib/parse.js
index e2dd04b6..099fc49a 100644
--- a/lib/parse.js
+++ b/lib/parse.js
@@ -1054,6 +1054,8 @@ function parse($TEXT, options) {
         var name = is("name") ? as_symbol(in_statement ? AST_SymbolDefun : AST_SymbolLambda) : null;
         if (in_statement && !name)
             unexpected();
+        if (name && ctor !== AST_Accessor && !(name instanceof AST_SymbolDeclaration))
+            unexpected(prev());
         expect("(");
         var argnames = [];
         for (var first = true; !is("punc", ")");) {
diff --git a/test/mocha/minify.js b/test/mocha/minify.js
index fc7332fb..aed8f915 100644
--- a/test/mocha/minify.js
+++ b/test/mocha/minify.js
@@ -73,6 +73,12 @@ describe("minify", function() {
         assert.strictEqual(run_code(compressed), run_code(original));
     });
 
+    it("should not parse invalid use of reserved words", function() {
+        assert.strictEqual(Uglify.minify("function enum(){}").error, undefined);
+        assert.strictEqual(Uglify.minify("function static(){}").error, undefined);
+        assert.strictEqual(Uglify.minify("function this(){}").error.message, "Unexpected token: name (this)");
+    });
+
     describe("keep_quoted_props", function() {
         it("Should preserve quotes in object literals", function() {
             var js = 'var foo = {"x": 1, y: 2, \'z\': 3};';
-- 
2.34.1