From: bmeurer@chromium.org <bmeurer@chromium.org@ce2b1a6d-e550-0410-aec6-3dcde31c8c00>
Date: Fri, 28 Feb 2014 11:41:07 +0000 (+0000)
Subject: Fix JSObject::PrintTransitions.
X-Git-Tag: upstream/4.7.83~10536
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=70242fe3bbccfe2a6df7a67de37e6bb1e5e17a17;p=platform%2Fupstream%2Fv8.git

Fix JSObject::PrintTransitions.

BUG=347912
LOG=y
R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/183683005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19601 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
---

diff --git a/src/objects-printer.cc b/src/objects-printer.cc
index e9fb832..fb273d5 100644
--- a/src/objects-printer.cc
+++ b/src/objects-printer.cc
@@ -400,28 +400,39 @@ void JSObject::PrintTransitions(FILE* out) {
   if (!map()->HasTransitionArray()) return;
   TransitionArray* transitions = map()->transitions();
   for (int i = 0; i < transitions->number_of_transitions(); i++) {
+    Name* key = transitions->GetKey(i);
     PrintF(out, "   ");
-    transitions->GetKey(i)->NamePrint(out);
+    key->NamePrint(out);
     PrintF(out, ": ");
-    switch (transitions->GetTargetDetails(i).type()) {
-      case FIELD: {
-        PrintF(out, " (transition to field)\n");
-        break;
+    if (key == GetHeap()->frozen_symbol()) {
+      PrintF(out, " (transition to frozen)\n");
+    } else if (key == GetHeap()->elements_transition_symbol()) {
+      PrintF(out, " (transition to ");
+      PrintElementsKind(out, transitions->GetTarget(i)->elements_kind());
+      PrintF(out, ")\n");
+    } else if (key == GetHeap()->observed_symbol()) {
+      PrintF(out, " (transition to Object.observe)\n");
+    } else {
+      switch (transitions->GetTargetDetails(i).type()) {
+        case FIELD: {
+          PrintF(out, " (transition to field)\n");
+          break;
+        }
+        case CONSTANT:
+          PrintF(out, " (transition to constant)\n");
+          break;
+        case CALLBACKS:
+          PrintF(out, " (transition to callback)\n");
+          break;
+        // Values below are never in the target descriptor array.
+        case NORMAL:
+        case HANDLER:
+        case INTERCEPTOR:
+        case TRANSITION:
+        case NONEXISTENT:
+          UNREACHABLE();
+          break;
       }
-      case CONSTANT:
-        PrintF(out, " (transition to constant)\n");
-        break;
-      case CALLBACKS:
-        PrintF(out, " (transition to callback)\n");
-        break;
-      // Values below are never in the target descriptor array.
-      case NORMAL:
-      case HANDLER:
-      case INTERCEPTOR:
-      case TRANSITION:
-      case NONEXISTENT:
-        UNREACHABLE();
-        break;
     }
   }
 }
diff --git a/test/mjsunit/regress/regress-347912.js b/test/mjsunit/regress/regress-347912.js
new file mode 100644
index 0000000..b609e36
--- /dev/null
+++ b/test/mjsunit/regress/regress-347912.js
@@ -0,0 +1,10 @@
+// Copyright 2014 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
+
+var __v_4 = {};
+__v_2 = {};
+__v_2[1024] = 0;
+%DebugPrint(__v_4);