[C++11] Make use of 'nullptr' in the Support library.

llvm-svn: 205697

1 files changed, 5 insertions, 5 deletions

diff --git a/llvm/lib/Support/DynamicLibrary.cpp b/llvm/lib/Support/DynamicLibrary.cpp
index 5d77153a188..e4a438585b8 100644
--- a/llvm/lib/Support/DynamicLibrary.cpp
+++ b/llvm/lib/Support/DynamicLibrary.cpp
@@ -51,14 +51,14 @@ using namespace llvm::sys;
 //===          independent code.
 //===----------------------------------------------------------------------===//
 
-static DenseSet<void *> *OpenedHandles = 0;
+static DenseSet<void *> *OpenedHandles = nullptr;
 
 DynamicLibrary DynamicLibrary::getPermanentLibrary(const char *filename,
                                                    std::string *errMsg) {
   SmartScopedLock<true> lock(*SymbolsMutex);
 
   void *handle = dlopen(filename, RTLD_LAZY|RTLD_GLOBAL);
-  if (handle == 0) {
+  if (handle == nullptr) {
     if (errMsg) *errMsg = dlerror();
     return DynamicLibrary();
   }
@@ -70,7 +70,7 @@ DynamicLibrary DynamicLibrary::getPermanentLibrary(const char *filename,
     handle = RTLD_DEFAULT;
 #endif
 
-  if (OpenedHandles == 0)
+  if (OpenedHandles == nullptr)
     OpenedHandles = new DenseSet<void *>();
 
   // If we've already loaded this library, dlclose() the handle in order to
@@ -83,7 +83,7 @@ DynamicLibrary DynamicLibrary::getPermanentLibrary(const char *filename,
 
 void *DynamicLibrary::getAddressOfSymbol(const char *symbolName) {
   if (!isValid())
-    return NULL;
+    return nullptr;
   return dlsym(Data, symbolName);
 }
 
@@ -166,7 +166,7 @@ void* DynamicLibrary::SearchForAddressOfSymbol(const char *symbolName) {
 #endif
 #undef EXPLICIT_SYMBOL
 
-  return 0;
+  return nullptr;
 }
 
 #endif // LLVM_ON_WIN32