v8/test/mjsunit/regress/regress-990205.js
lrn@chromium.org f09705ab9b Make invalid break/continue statements an early syntax error.
Previously we delayed the throwing of syntax errors until runtime, so
unreachable errors didn't get reported.
To match a change in JSC, we now stop parsing and report the error immediately.

BUG=69736
TEST=

Review URL: http://codereview.chromium.org/6355006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6341 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2011-01-17 09:36:10 +00:00

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JavaScript

// Copyright 2008 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// We throw syntax errors early for invalid break and continue statements.
// (Notice that the example isn't valid ECMAScript due to the
// function declaration that is not at top level.)
function f() {
// Force eager compilation of x through the use of eval. The break
// in function x should not try to break out of the enclosing while.
return eval("while(0) function x() { break; }; 42");
};
assertThrows("f()");