From f235194518edff2339059a268951d8efaa1088b5 Mon Sep 17 00:00:00 2001
From: "yangguo@chromium.org"
 <yangguo@chromium.org@ce2b1a6d-e550-0410-aec6-3dcde31c8c00>
Date: Thu, 28 Nov 2013 15:30:17 +0000
Subject: [PATCH] Fix bug in inlining Function.apply.

R=jkummerow@chromium.org
BUG=323942
LOG=Y

Review URL: https://codereview.chromium.org/95123003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18135 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
---
 src/hydrogen.cc                              |  7 ++++
 test/mjsunit/regress/regress-crbug-323942.js | 57 ++++++++++++++++++++++++++++
 2 files changed, 64 insertions(+)
 create mode 100644 test/mjsunit/regress/regress-crbug-323942.js

diff --git a/src/hydrogen.cc b/src/hydrogen.cc
index 634d2ca..89dc9de 100644
--- a/src/hydrogen.cc
+++ b/src/hydrogen.cc
@@ -7559,6 +7559,13 @@ bool HOptimizedGraphBuilder::TryCallApply(Call* expr) {
   // Found pattern f.apply(receiver, arguments).
   CHECK_ALIVE_OR_RETURN(VisitForValue(prop->obj()), true);
   HValue* function = Top();
+  // The function get here may be an undefined constant if lookup fails.
+  if (function->IsConstant() &&
+      !HConstant::cast(function)->handle(isolate())->IsJSFunction()) {
+    Drop(1);
+    return false;
+  }
+
   AddCheckConstantFunction(expr->holder(), function, function_map);
   Drop(1);
 
diff --git a/test/mjsunit/regress/regress-crbug-323942.js b/test/mjsunit/regress/regress-crbug-323942.js
new file mode 100644
index 0000000..15af494
--- /dev/null
+++ b/test/mjsunit/regress/regress-crbug-323942.js
@@ -0,0 +1,57 @@
+// 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: --allow-natives-syntax
+
+"use strict";
+
+// Function is defined on the prototype chain.
+var holder = { f: function() { return 42; } };
+var receiver = { };
+receiver.__proto__ = { };
+receiver.__proto__.__proto__ = holder;
+
+// Inline two levels.
+function h(o) { return o.f.apply(this, arguments); }
+function g(o) { return h(o); }
+
+// Collect type information for apply call.
+assertEquals(42, g(receiver));
+assertEquals(42, g(receiver));
+
+// Sneakily remove the function from the prototype chain.
+// The receiver map does not change.
+receiver.__proto__.__proto__ = {};
+
+// Lookup of o.f during graph creation fails.
+%OptimizeFunctionOnNextCall(g);
+
+assertThrows(function() { g(receiver); });
+
+// Put function back.
+receiver.__proto__.__proto__ = holder;
+assertEquals(42, g(receiver));
-- 
2.7.4