scope-catch-param-var-none.js

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// Copyright (C) 2016 the V8 project authors. All rights reserved.

// This code is governed by the BSD license found in the LICENSE file.

/*---

esid: sec-runtime-semantics-catchclauseevaluation

description: Retainment of existing variable environment for `catch` parameter

flags: [noStrict]

---*/

var x = 1;

var probeBefore = function() { return x; };

var probeTry, probeParam, probeBlock;

try {

  var x = 2;

  probeTry = function() { return x; };

  throw [];

} catch ([_ = (eval('var x = 3;'), probeParam = function() { return x; })]) {

  var x = 4;

  probeBlock = function() { return x; };

assert.sameValue(probeBefore(), 4, 'reference preceding statement');

assert.sameValue(probeTry(), 4, 'reference from `try` block');

assert.sameValue(probeParam(), 4, 'reference within CatchParameter');

assert.sameValue(probeBlock(), 4, 'reference from `catch` block');

assert.sameValue(x, 4, 'reference following statement');

reportCompare(0, 0);