src/v8/test/mjsunit/harmony/regress/regress-4904.js

// Copyright 2015 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-do-expressions

(function testCatchScopeInDoExpression() {
  var f = (s = 17, y = do { try { throw 25; } catch(e) { s += e; }; }) => s;
  var result = f();
  assertEquals(result, 42);
})();

(function testCatchScopeInDoExpression() {
  var f = (s = 17, y = do { let t; try { throw 25; } catch(e) { s += e; }; }) => s;
  var result = f();
  assertEquals(result, 42);
})();

(function testCatchScopeInDoExpression() {
  let t1;
  var f = (s = 17, y = do { let t2; try { throw 25; } catch(e) { s += e; }; }) => s;
  var result = f();
  assertEquals(result, 42);
})();