v8/test/message/syntactic-tail-call-in-comma.js

// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// Flags: --harmony-explicit-tailcalls

function f() {
  return 1;
}

function g() {
  return 1, 2, 3,   continue f() , 4  ;
}