Fix win32 build breakage

runtime/vm/os_test.cc

Index: runtime/vm/os_test.cc
diff --git a/runtime/vm/os_test.cc b/runtime/vm/os_test.cc
index 7dd4bb8b3b8ba14f8d56ea762ab6f808bb5c5b48..a64fc824df682c488d54bc23ff60173c8714ed3d 100644
--- a/runtime/vm/os_test.cc
+++ b/runtime/vm/os_test.cc
@@ -56,15 +56,26 @@ UNIT_TEST_CASE(OsFuncs) {
 
 
 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);
+  // TODO(johnmccutchan): Test other alignments, once we support
+  // alignments != 16 on Mac.
+  void* p1 = OS::AlignedAllocate(1023, 16);
+  void* p2 = OS::AlignedAllocate(1025, 16);
+  void* p3 = OS::AlignedAllocate(1025, 16);
+  void* p4 = OS::AlignedAllocate(1, 16);
+  void* p5 = OS::AlignedAllocate(2, 16);
+  void* p6 = OS::AlignedAllocate(4, 16);
+  EXPECT((reinterpret_cast<intptr_t>(p1) & 15) == 0);
+  EXPECT((reinterpret_cast<intptr_t>(p2) & 15) == 0);
+  EXPECT((reinterpret_cast<intptr_t>(p3) & 15) == 0);
+  EXPECT((reinterpret_cast<intptr_t>(p4) & 15) == 0);
+  EXPECT((reinterpret_cast<intptr_t>(p5) & 15) == 0);
+  EXPECT((reinterpret_cast<intptr_t>(p6) & 15) == 0);
+  OS::AlignedFree(p1);
+  OS::AlignedFree(p2);
+  OS::AlignedFree(p3);
+  OS::AlignedFree(p4);
+  OS::AlignedFree(p5);
+  OS::AlignedFree(p6);
 }
 
 }  // namespace dart