[printing] Fix DCHECK failure when printing FAST_HOLEY_DOUBLE_ELEMENTS

test/mjsunit/debug-print.js

Index: test/mjsunit/debug-print.js
diff --git a/test/mjsunit/debug-print.js b/test/mjsunit/debug-print.js
new file mode 100644
index 0000000000000000000000000000000000000000..d96f278e9634d8efc0dc75aff3eeb3fe9dee1500
--- /dev/null
+++ b/test/mjsunit/debug-print.js
@@ -0,0 +1,49 @@
+// Copyright 2016 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: --allow-natives-syntax
+
+// Make sure printing different kinds of objects doesn't crash

[Jakob Kummerow, 2016/08/31 14:56:09]

nit: trailing full stop please.

+
+// Different elements

[Jakob Kummerow, 2016/08/31 14:56:09]

Did you mean to apply s/objects/elements/ to the previous line?

+
+var array;
+var obj = {};
+
+array = [];
+%DebugPrint(array);
+
+// FAST_SMI_ELEMENTS
+array = [1, 2, 3];
+%DebugPrint(array);
+
+// FAST_HOLEY_SMI_ELEMENTS
+array[10] = 100;
+array[11] = 100;
+%DebugPrint(array);
+
+// FAST_ELEMENTS
+array = [1, obj, obj];
+%DebugPrint(array);
+
+// FAST_HOLEY_ELEMENTS
+array[100] = obj;
+array[101] = obj;
+%DebugPrint(array);
+
+// FAST_DOUBLE_ELEMENTS
+array = [1.1, 2.2, 3.3, 3.3, 3.3, NaN];
+%DebugPrint(array);
+array.push(NaN);
+array.push(NaN);
+%DebugPrint(array);
+
+// FAST_HOLEY_DOUBLE_ELEMENTS
+array[100] = 1.2;
+array[101] = 1.2;
+%DebugPrint(array);
+
+// DICTIONARY_ELEMENTS
+%NormalizeElements(array);
+%DebugPrint(array);