Expose transferable constructor to Int8List

runtime/vm/os_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 "platform/utils.h"
 #include "vm/globals.h"
 #include "vm/os.h"
 #include "vm/unit_test.h"
 
@@ skipping 36 matching lines @@
 
 
 UNIT_TEST_CASE(OsFuncs) {
   EXPECT(Utils::IsPowerOfTwo(OS::ActivationFrameAlignment()));
   EXPECT(Utils::IsPowerOfTwo(OS::PreferredCodeAlignment()));
   int procs = OS::NumberOfAvailableProcessors();
   EXPECT_LE(1, procs);
   EXPECT_LT(0U, OS::GetStackSizeLimit());
 }
 
+UNIT_TEST_CASE(OSAlignedAllocate) {
+  void* p16 = OS::AlignedAllocate(1023, 16);
+  void* p32 = OS::AlignedAllocate(1025, 32);
+  void* p64 = OS::AlignedAllocate(1025, 64);
+  EXPECT((reinterpret_cast<intptr_t>(p16) & 15) == 0);
+  EXPECT((reinterpret_cast<intptr_t>(p32) & 31) == 0);
+  EXPECT((reinterpret_cast<intptr_t>(p64) & 63) == 0);
+  OS::AlignedFree(p16);
+  OS::AlignedFree(p32);
+  OS::AlignedFree(p64);
+}
+
 }  // namespace dart