[C++11] Use 'nullptr'.

llvm-svn: 210442
diff --git a/llvm/unittests/Support/MemoryBufferTest.cpp b/llvm/unittests/Support/MemoryBufferTest.cpp
index 6790d0c..b7d0c20 100644
--- a/llvm/unittests/Support/MemoryBufferTest.cpp
+++ b/llvm/unittests/Support/MemoryBufferTest.cpp
@@ -43,15 +43,15 @@
 TEST_F(MemoryBufferTest, get) {
   // Default name and null-terminator flag
   OwningBuffer MB1(MemoryBuffer::getMemBuffer(data));
-  EXPECT_TRUE(0 != MB1.get());
+  EXPECT_TRUE(nullptr != MB1.get());
 
   // RequiresNullTerminator = false
   OwningBuffer MB2(MemoryBuffer::getMemBuffer(data, "one", false));
-  EXPECT_TRUE(0 != MB2.get());
+  EXPECT_TRUE(nullptr != MB2.get());
 
   // RequiresNullTerminator = true
   OwningBuffer MB3(MemoryBuffer::getMemBuffer(data, "two", true));
-  EXPECT_TRUE(0 != MB3.get());
+  EXPECT_TRUE(nullptr != MB3.get());
 
   // verify all 3 buffers point to the same address
   EXPECT_EQ(MB1->getBufferStart(), MB2->getBufferStart());
@@ -89,11 +89,11 @@
 TEST_F(MemoryBufferTest, copy) {
   // copy with no name
   OwningBuffer MBC1(MemoryBuffer::getMemBufferCopy(data));
-  EXPECT_TRUE(0 != MBC1.get());
+  EXPECT_TRUE(nullptr != MBC1.get());
 
   // copy with a name
   OwningBuffer MBC2(MemoryBuffer::getMemBufferCopy(data, "copy"));
-  EXPECT_TRUE(0 != MBC2.get());
+  EXPECT_TRUE(nullptr != MBC2.get());
 
   // verify the two copies do not point to the same place
   EXPECT_NE(MBC1->getBufferStart(), MBC2->getBufferStart());
@@ -102,25 +102,25 @@
 TEST_F(MemoryBufferTest, make_new) {
   // 0-sized buffer
   OwningBuffer Zero(MemoryBuffer::getNewUninitMemBuffer(0));
-  EXPECT_TRUE(0 != Zero.get());
+  EXPECT_TRUE(nullptr != Zero.get());
 
   // uninitialized buffer with no name
   OwningBuffer One(MemoryBuffer::getNewUninitMemBuffer(321));
-  EXPECT_TRUE(0 != One.get());
+  EXPECT_TRUE(nullptr != One.get());
 
   // uninitialized buffer with name
   OwningBuffer Two(MemoryBuffer::getNewUninitMemBuffer(123, "bla"));
-  EXPECT_TRUE(0 != Two.get());
+  EXPECT_TRUE(nullptr != Two.get());
 
   // 0-initialized buffer with no name
   OwningBuffer Three(MemoryBuffer::getNewMemBuffer(321, data));
-  EXPECT_TRUE(0 != Three.get());
+  EXPECT_TRUE(nullptr != Three.get());
   for (size_t i = 0; i < 321; ++i)
     EXPECT_EQ(0, Three->getBufferStart()[0]);
 
   // 0-initialized buffer with name
   OwningBuffer Four(MemoryBuffer::getNewMemBuffer(123, "zeros"));
-  EXPECT_TRUE(0 != Four.get());
+  EXPECT_TRUE(nullptr != Four.get());
   for (size_t i = 0; i < 123; ++i)
     EXPECT_EQ(0, Four->getBufferStart()[0]);
 }