From acf951a5bc9d79dc2614d880758e3e7f79f975ae Mon Sep 17 00:00:00 2001
From: "Alex Lam S.L" <alexlamsl@gmail.com>
Date: Mon, 26 Apr 2021 05:10:22 +0800
Subject: [PATCH] fix corner case with `for [await]...of` (#4872)

---
 lib/parse.js           |  1 +
 test/compress/loops.js | 14 ++++++++++++++
 2 files changed, 15 insertions(+)

diff --git a/lib/parse.js b/lib/parse.js
index 415a20ee6b..dd8e70e93f 100644
--- a/lib/parse.js
+++ b/lib/parse.js
@@ -1240,6 +1240,7 @@ function parse($TEXT, options) {
     }
 
     function for_enum(ctor, init) {
+        handle_regexp();
         var obj = expression();
         expect(")");
         return new ctor({
diff --git a/test/compress/loops.js b/test/compress/loops.js
index 4ba0d075d9..c1f075cc16 100644
--- a/test/compress/loops.js
+++ b/test/compress/loops.js
@@ -852,6 +852,20 @@ for_async_of: {
     node_version: ">=0.12 <16"
 }
 
+for_of_regexp: {
+    input: {
+        for (var a of /foo/);
+    }
+    expect_exact: "for(var a of/foo/);"
+}
+
+for_await_of_regexp: {
+    input: {
+        for await (var a of /foo/);
+    }
+    expect_exact: "for await(var a of/foo/);"
+}
+
 issue_3631_1: {
     options = {
         dead_code: true,