Index: include/clang/Analysis/Analyses/ThreadSafetyTIL.h
===================================================================
--- include/clang/Analysis/Analyses/ThreadSafetyTIL.h
+++ include/clang/Analysis/Analyses/ThreadSafetyTIL.h
@@ -53,7 +53,7 @@
 #include <algorithm>
 #include <cassert>
 #include <cstddef>
-#include <stdint.h>
+#include <cstdint>
 #include <utility>
 
 
Index: include/clang/Basic/Linkage.h
===================================================================
--- include/clang/Basic/Linkage.h
+++ include/clang/Basic/Linkage.h
@@ -14,8 +14,6 @@
 #ifndef LLVM_CLANG_BASIC_LINKAGE_H
 #define LLVM_CLANG_BASIC_LINKAGE_H
 
-#include <assert.h>
-#include <stdint.h>
 #include <utility>
 
 namespace clang {
Index: include/clang/Basic/TargetBuiltins.h
===================================================================
--- include/clang/Basic/TargetBuiltins.h
+++ include/clang/Basic/TargetBuiltins.h
@@ -16,8 +16,8 @@
 #ifndef LLVM_CLANG_BASIC_TARGETBUILTINS_H
 #define LLVM_CLANG_BASIC_TARGETBUILTINS_H
 
-#include <stdint.h>
 #include "clang/Basic/Builtins.h"
+#include <cstdint>
 #undef PPC
 
 namespace clang {
Index: lib/CodeGen/CGOpenCLRuntime.cpp
===================================================================
--- lib/CodeGen/CGOpenCLRuntime.cpp
+++ lib/CodeGen/CGOpenCLRuntime.cpp
@@ -18,7 +18,7 @@
 #include "TargetInfo.h"
 #include "llvm/IR/DerivedTypes.h"
 #include "llvm/IR/GlobalValue.h"
-#include <assert.h>
+#include <cassert>
 
 using namespace clang;
 using namespace CodeGen;
Index: lib/Driver/Types.cpp
===================================================================
--- lib/Driver/Types.cpp
+++ lib/Driver/Types.cpp
@@ -11,7 +11,7 @@
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/StringSwitch.h"
 #include <cassert>
-#include <string.h>
+#include <cstring>
 
 using namespace clang::driver;
 using namespace clang::driver::types;
Index: lib/Frontend/CodeGenOptions.cpp
===================================================================
--- lib/Frontend/CodeGenOptions.cpp
+++ lib/Frontend/CodeGenOptions.cpp
@@ -8,7 +8,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "clang/Frontend/CodeGenOptions.h"
-#include <string.h>
+#include <cstring>
 
 namespace clang {
 
Index: lib/Frontend/CompilerInstance.cpp
===================================================================
--- lib/Frontend/CompilerInstance.cpp
+++ lib/Frontend/CompilerInstance.cpp
@@ -46,9 +46,9 @@
 #include "llvm/Support/Signals.h"
 #include "llvm/Support/Timer.h"
 #include "llvm/Support/raw_ostream.h"
+#include <ctime>
 #include <sys/stat.h>
 #include <system_error>
-#include <time.h>
 #include <utility>
 
 using namespace clang;
Index: lib/Lex/HeaderSearch.cpp
===================================================================
--- lib/Lex/HeaderSearch.cpp
+++ lib/Lex/HeaderSearch.cpp
@@ -29,8 +29,9 @@
 #include <cstdio>
 #include <utility>
 #if defined(LLVM_ON_UNIX)
-#include <limits.h>
+#include <climits>
 #endif
+
 using namespace clang;
 
 const IdentifierInfo *
Index: lib/Lex/ModuleMap.cpp
===================================================================
--- lib/Lex/ModuleMap.cpp
+++ lib/Lex/ModuleMap.cpp
@@ -30,10 +30,10 @@
 #include "llvm/Support/Host.h"
 #include "llvm/Support/Path.h"
 #include "llvm/Support/raw_ostream.h"
-#include <stdlib.h>
 #if defined(LLVM_ON_UNIX)
-#include <limits.h>
+#include <climits>
 #endif
+#include <cstdlib>
 using namespace clang;
 
 Module::ExportDecl 
Index: lib/Sema/DelayedDiagnostic.cpp
===================================================================
--- lib/Sema/DelayedDiagnostic.cpp
+++ lib/Sema/DelayedDiagnostic.cpp
@@ -15,7 +15,8 @@
 //
 //===----------------------------------------------------------------------===//
 #include "clang/Sema/DelayedDiagnostic.h"
-#include <string.h>
+#include <cstring>
+
 using namespace clang;
 using namespace sema;
 
Index: lib/Tooling/Core/QualTypeNames.cpp
===================================================================
--- lib/Tooling/Core/QualTypeNames.cpp
+++ lib/Tooling/Core/QualTypeNames.cpp
@@ -14,8 +14,7 @@
 #include "clang/AST/DeclarationName.h"
 #include "clang/AST/GlobalDecl.h"
 #include "clang/AST/Mangle.h"
-
-#include <stdio.h>
+#include <cstdio>
 #include <memory>
 
 namespace clang {