Re-enable various MSVC warnings.

base/allocator/allocator_unittest.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <stdio.h>
 #include <stdlib.h>
 #include <algorithm>   // for min()
 
 #include "base/atomicops.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 269 matching lines @@
   } else {
     EXPECT_NE(reinterpret_cast<void*>(NULL), p) <<
         "calloc(n, s) should succeed";
     for (int i = 0; i < n*s; i++) {
       EXPECT_EQ('\0', p[i]);
     }
     free(p);
   }
 }
 
+// MSVC C4530 complains about exception handler usage when exceptions are
+// disabled.  Temporarily disable that warning so we can test that they are, in
+// fact, disabled.
+#if defined(OS_WIN)
+#pragma warning(push)
+#pragma warning(disable: 4530)
+#endif
 
 // A global test counter for number of times the NewHandler is called.
 static int news_handled = 0;
 static void TestNewHandler() {
   ++news_handled;
   throw std::bad_alloc();
 }
 
 // Because we compile without exceptions, we expect these will not throw.
 static void TestOneNewWithoutExceptions(void* (*func)(size_t),
@@ skipping 24 matching lines @@
   std::new_handler saved_handler = std::set_new_handler(0);
   TestOneNewWithoutExceptions(func, false);
 
   // test with new_handler:
   std::set_new_handler(TestNewHandler);
   TestOneNewWithoutExceptions(func, true);
   EXPECT_EQ(news_handled, 1) << "nothrow new_handler was not called.";
   std::set_new_handler(saved_handler);
 }
 
+#if defined(OS_WIN)
+#pragma warning(pop)
+#endif
+
 }  // namespace
 
 //-----------------------------------------------------------------------------
 
 TEST(Atomics, AtomicIncrementWord) {
   TestAtomicIncrement<AtomicWord>();
 }
 
 TEST(Atomics, AtomicIncrement32) {
   TestAtomicIncrement<Atomic32>();
@@ skipping 167 matching lines @@
   }
 }
 
 #endif
 
 
 int main(int argc, char** argv) {
   testing::InitGoogleTest(&argc, argv);
   return RUN_ALL_TESTS();
 }