Allow linker initialization of lazy instance

base/lazy_instance_unittest.cc

 // Copyright (c) 2008 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 "base/at_exit.h"
 #include "base/atomic_sequence_num.h"
 #include "base/lazy_instance.h"
 #include "base/threading/simple_thread.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ skipping 38 matching lines @@
     EXPECT_EQ(12, lazy_->Get().some_int());
     EXPECT_EQ(12, lazy_->Pointer()->some_int());
   }
 
  private:
   base::LazyInstance<SlowConstructor>* lazy_;
 };
 
 }  // namespace
 
-static base::LazyInstance<ConstructAndDestructLogger> lazy_logger(
-    base::LINKER_INITIALIZED);
+static base::LazyInstance<ConstructAndDestructLogger> lazy_logger =
+    LINKER_ZERO_INITIALIZED;
 
 TEST(LazyInstanceTest, Basic) {
   {
     base::ShadowingAtExitManager shadow;
 
     EXPECT_EQ(0, constructed_seq_.GetNext());
     EXPECT_EQ(0, destructed_seq_.GetNext());
 
     lazy_logger.Get();
     EXPECT_EQ(2, constructed_seq_.GetNext());
     EXPECT_EQ(1, destructed_seq_.GetNext());
 
     lazy_logger.Pointer();
     EXPECT_EQ(3, constructed_seq_.GetNext());
     EXPECT_EQ(2, destructed_seq_.GetNext());
   }
   EXPECT_EQ(4, constructed_seq_.GetNext());
   EXPECT_EQ(4, destructed_seq_.GetNext());
 }
 
-static base::LazyInstance<SlowConstructor> lazy_slow(base::LINKER_INITIALIZED);
+static base::LazyInstance<SlowConstructor> lazy_slow = LINKER_ZERO_INITIALIZED;
 
 TEST(LazyInstanceTest, ConstructorThreadSafety) {
   {
     base::ShadowingAtExitManager shadow;
 
     SlowDelegate delegate(&lazy_slow);
     EXPECT_EQ(0, SlowConstructor::constructed);
 
     base::DelegateSimpleThreadPool pool("lazy_instance_cons", 5);
     pool.AddWork(&delegate, 20);
@@ skipping 23 matching lines @@
 };
 
 }  // anonymous namespace
 
 TEST(LazyInstanceTest, LeakyLazyInstance) {
   // Check that using a plain LazyInstance causes the dtor to run
   // when the AtExitManager finishes.
   bool deleted1 = false;
   {
     base::ShadowingAtExitManager shadow;
-    static base::LazyInstance<DeleteLogger> test(base::LINKER_INITIALIZED);
+    static base::LazyInstance<DeleteLogger> test = LINKER_ZERO_INITIALIZED;
     test.Get().SetDeletedPtr(&deleted1);
   }
   EXPECT_TRUE(deleted1);
 
   // Check that using a *leaky* LazyInstance makes the dtor not run
   // when the AtExitManager finishes.
   bool deleted2 = false;
   {
     base::ShadowingAtExitManager shadow;
     static base::LazyInstance<DeleteLogger,
                               base::LeakyLazyInstanceTraits<DeleteLogger> >
-        test(base::LINKER_INITIALIZED);
+        test = LINKER_ZERO_INITIALIZED;
     test.Get().SetDeletedPtr(&deleted2);
   }
   EXPECT_FALSE(deleted2);
 }