}
}
- Handle<JSFunction> function(JSFunction::cast(frame_inspector->GetFunction()));
- int length = frame_inspector->GetParametersCount();
- Handle<JSObject> arguments =
- isolate->factory()->NewArgumentsObject(function, length);
- Handle<FixedArray> array = isolate->factory()->NewFixedArray(length);
-
- AssertNoAllocation no_gc;
- WriteBarrierMode mode = array->GetWriteBarrierMode(no_gc);
- for (int i = 0; i < length; i++) {
- array->set(i, frame_inspector->GetParameter(i), mode);
- }
- arguments->set_elements(*array);
- return arguments;
+ // FunctionGetArguments can't return a non-Object.
+ return Handle<JSObject>(JSObject::cast(
+ Accessors::FunctionGetArguments(frame_inspector->GetFunction(),
+ NULL)->ToObjectUnchecked()), isolate);
}
--- /dev/null
+// 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
+
+Debug = debug.Debug
+
+var error = null;
+var array = ["a", "b", "c"];
+
+function listener(event, exec_state, event_data, data) {
+ try {
+ if (event == Debug.DebugEvent.Break) {
+ assertArrayEquals(array,
+ exec_state.frame(0).evaluate('arguments').value());
+ }
+ } catch (e) {
+ error = e;
+ }
+};
+
+Debug.setListener(listener);
+
+
+function f(a, b) {
+ arguments;
+ debugger; // Arguments object is already materialized.
+}
+
+f.apply(this, array);
+f("a", "b", "c");
+assertNull(error);
+
+function g(a, b) {
+ debugger; // Arguments object is not yet materialized.
+}
+g.apply(this, array);
+g("a", "b", "c");
+assertNull(error);
+