Fix x64 patching of asllocation stub: the pool pointer must be set-up before patching jump is execu…

runtime/vm/compiler_test.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "platform/assert.h"
 #include "vm/class_finalizer.h"
 #include "vm/code_patcher.h"
 #include "vm/compiler.h"
 #include "vm/dart_api_impl.h"
 #include "vm/object.h"
@@ skipping 83 matching lines @@
 
   Isolate* isolate = Isolate::Current();
   StubCode* stub_code = isolate->stub_code();
   const Code& stub = Code::Handle(isolate,
                                   stub_code->GetAllocationStubForClass(cls));
   Class& owner = Class::Handle();
   owner ^= stub.owner();
   owner.SwitchAllocationStub();
   result = Dart_Invoke(lib, NewString("main"), 0, NULL);
   EXPECT_VALID(result);
+
+  owner.SwitchAllocationStub();
+  result = Dart_Invoke(lib, NewString("main"), 0, NULL);
+  EXPECT_VALID(result);
+
+  owner.SwitchAllocationStub();
+  result = Dart_Invoke(lib, NewString("main"), 0, NULL);
+  EXPECT_VALID(result);
+
   FLAG_enable_type_checks = old_enable_type_checks;
 }
 
 
 TEST_CASE(EvalExpression) {
   const char* kScriptChars =
       "int ten = 2 * 5;              \n"
       "get dot => '.';               \n"
       "class A {                     \n"
       "  var apa = 'Herr Nilsson';   \n"
@@ skipping 50 matching lines @@
     val = lib.Evaluate(expression, Array::empty_array(), Array::empty_array());
   }
 
   EXPECT(!val.IsNull());
   EXPECT(!val.IsError());
   EXPECT(val.IsInteger());
   EXPECT_EQ(7, Integer::Cast(val).AsInt64Value());
 }
 
 }  // namespace dart