Reviewers: Kevin Millikin,
Description:
Fix issue 221:
http://code.google.com/p/v8/issues/detail?id=221
The attempt to resolve 'eval' went into an infinite loop. Also, we
need to throw a reference error in case 'eval' cannot be resolved.
Please review this at http://codereview.chromium.org/19536
SVN Base: http://v8.googlecode.com/svn/branches/bleeding_edge/
Affected files:
M src/runtime.cc
A test/mjsunit/regress/regress-221.js
Index: test/mjsunit/regress/regress-221.js
===================================================================
--- test/mjsunit/regress/regress-221.js (revision 0)
+++ test/mjsunit/regress/regress-221.js (revision 0)
@@ -0,0 +1,34 @@
+// Copyright 2009 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.
+
+// Test that direct eval calls handle the case where eval has been
+// deleted correctly.
+
+// See http://code.google.com/p/v8/issues/detail?id=221
+
+assertThrows('eval(delete eval)');
+
Index: src/runtime.cc
===================================================================
--- src/runtime.cc (revision 1201)
+++ src/runtime.cc (working copy)
@@ -4061,7 +4061,9 @@
while (!context.is_null()) {
receiver = context->Lookup(Factory::eval_symbol(),
FOLLOW_PROTOTYPE_CHAIN,
&index, &attributes);
- if (attributes != ABSENT) break;
+ // Stop search when eval is found or when the global context is
+ // reached.
+ if (attributes != ABSENT || context->IsGlobalContext()) break;
if (context->is_function_context()) {
context =
Handle<Context>(Context::cast(context->closure()->context()));
} else {
@@ -4069,6 +4071,15 @@
}
}
+ // If eval could not be resolved, it has been deleted and we need to
+ // throw a reference error.
+ if (attributes == ABSENT) {
+ Handle<Object> name = Factory::eval_symbol();
+ Handle<Object> reference_error =
+ Factory::NewReferenceError("not_defined", HandleVector(&name, 1));
+ return Top::Throw(*reference_error);
+ }
+
if (context->IsGlobalContext()) {
// 'eval' is bound in the global context, but it may have been
overwritten.
// Compare it to the builtin 'GlobalEval' function to make sure.
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