Do not implicitly convert receivers for builtin functions when inspecting frames.

R=jkummerow@chromium.org
BUG=

Review URL: https://codereview.chromium.org/18900004

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15574 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/runtime.cc

@@ -11061,7 +11061,7 @@ RUNTIME_FUNCTION(MaybeObject*, Runtime_GetFrameDetails) {
   Handle<Object> receiver(it.frame()->receiver(), isolate);
   if (!receiver->IsJSObject() &&
       shared->is_classic_mode() &&
-      !shared->native()) {
+      !function->IsBuiltin()) {
     // If the receiver is not a JSObject and the function is not a
     // builtin or strict-mode we have hit an optimization where a
     // value object is not converted into a wrapped JS objects. To
@@ -11071,6 +11071,7 @@ RUNTIME_FUNCTION(MaybeObject*, Runtime_GetFrameDetails) {
     it.Advance();
     Handle<Context> calling_frames_native_context(
         Context::cast(Context::cast(it.frame()->context())->native_context()));
+    ASSERT(!receiver->IsUndefined() && !receiver->IsNull());
     receiver =
         isolate->factory()->ToObject(receiver, calling_frames_native_context);
   }

test/mjsunit/regress/regress-frame-details-null-receiver.js

+// Copyright 2013 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.
+
+// Flags: --expose-debug-as debug --allow-natives-syntax
+
+Debug = debug.Debug;
+var listened = false;
+
+function listener(event, exec_state, event_data, data) {
+  if (event == Debug.DebugEvent.Exception) {
+    for (var i = 0; i < exec_state.frameCount(); i++) {
+      print(exec_state.frame(i).receiver());
+      print(exec_state.frame(i).func().name());
+    }
+  }
+  listened = true;
+}
+
+Debug.setListener(listener);
+Debug.setBreakOnException();
+
+assertThrows(function() { delete null['foo']; });
+
+Debug.clearBreakOnException();
+Debug.setListener(null);
+
+assertTrue(listened);
+