/*

 * Copyright (c) 2016 Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 * 

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 * 

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 * 

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 * 

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

/**

 * JDK-8168373: don't emit conversions for symbols outside their lexical scope

 *

 * @test

 * @run

 * @option --language=es6

 */

function p() { return false } // "predicate"

function r(x) { return x } // "read"

(function() {

  try { // Try creates control flow edges from assignments into catch blocks.

    // Lexically scoped, never read int variable (undefined at catch block) but still with a cf edge into catch block.

    // Since it's never read, it's not written either (Nashorn optimizes some dead writes).

    let x = 0; 

    if (p()) { throw {}; } // We need `p()` so this block doesn't get optimized away, for possibility of a `throw` 

    x = 0.0; // change the type of x to double

    r(x); // read x otherwise it's optimized away

  } catch (e) {} // under the bug, "throw" will try to widen unwritten int x to double for here and cause a verifier error

})()