loplugin:nullptr (automatic rewrite)

Change-Id: I1bc6c87fcd6e5e96362623be94c59be216a3b2b8

24 files changed, 154 insertions, 154 deletions

diff --git a/sal/qa/ByteSequence/ByteSequence.cxx b/sal/qa/ByteSequence/ByteSequence.cxx
index c742337748be..abe5e8fc4a6e 100644
--- a/sal/qa/ByteSequence/ByteSequence.cxx
+++ b/sal/qa/ByteSequence/ByteSequence.cxx
@@ -60,7 +60,7 @@ public:
     }
 
     void test_elem0() {
-        rtl::ByteSequence s(0, 0);
+        rtl::ByteSequence s(nullptr, 0);
         CPPUNIT_ASSERT_EQUAL(sal_Int32(0), s.getLength());
     }
 
diff --git a/sal/qa/OStringBuffer/rtl_OStringBuffer.cxx b/sal/qa/OStringBuffer/rtl_OStringBuffer.cxx
index ad5bbaae49b3..809665f74665 100644
--- a/sal/qa/OStringBuffer/rtl_OStringBuffer.cxx
+++ b/sal/qa/OStringBuffer/rtl_OStringBuffer.cxx
@@ -1515,7 +1515,7 @@ namespace rtl_OStringBuffer
             CPPUNIT_ASSERT_MESSAGE
             (
                 "test empty string",
-                pstr != 0 &&
+                pstr != nullptr &&
                 pstr[0] == '\0'
             );
 
diff --git a/sal/qa/osl/file/osl_File.cxx b/sal/qa/osl/file/osl_File.cxx
index a0c5fc53d658..221fd4cc893f 100644
--- a/sal/qa/osl/file/osl_File.cxx
+++ b/sal/qa/osl/file/osl_File.cxx
@@ -1132,9 +1132,9 @@ namespace osl_FileBase
             : nError1(FileBase::E_None)
             , nError2(FileBase::E_None)
             , bOK(false)
-            , pHandle(NULL)
-            , pUStr_DirURL(NULL)
-            , pUStr_FileURL(NULL)
+            , pHandle(nullptr)
+            , pUStr_DirURL(nullptr)
+            , pUStr_FileURL(nullptr)
         {
         }
 
@@ -1166,7 +1166,7 @@ namespace osl_FileBase
             }
 
             CPPUNIT_ASSERT_MESSAGE( "test for createTempFile function: create temp file and test the existence",
-                                     ( osl::FileBase::E_None == nError1 ) && ( pHandle != NULL ) &&   ( osl::FileBase::E_EXIST== nError2 )   );
+                                     ( osl::FileBase::E_None == nError1 ) && ( pHandle != nullptr ) &&   ( osl::FileBase::E_EXIST== nError2 )   );
         }
 
         void createTempFile_002()
@@ -1177,7 +1177,7 @@ namespace osl_FileBase
             nError2 = testFile.open( osl_File_OpenFlag_Create );
 
             CPPUNIT_ASSERT_MESSAGE( "createTempFile function: create a temp file, but it does not exist",
-                ( osl::FileBase::E_None == nError1 ) && ( pHandle != NULL ) &&
+                ( osl::FileBase::E_None == nError1 ) && ( pHandle != nullptr ) &&
                 ( osl::FileBase::E_EXIST == nError2 ) );
 
             //check file if have the write permission
@@ -1193,9 +1193,9 @@ namespace osl_FileBase
 
         void createTempFile_003()
         {
-            nError1 = FileBase::createTempFile( pUStr_DirURL, pHandle, 0 );
+            nError1 = FileBase::createTempFile( pUStr_DirURL, pHandle, nullptr );
             //the temp file will be removed when return from createTempFile
-            bOK = (pHandle != NULL && nError1 == osl::FileBase::E_None);
+            bOK = (pHandle != nullptr && nError1 == osl::FileBase::E_None);
             if ( bOK )
                 osl_closeFile( *pHandle );
 
@@ -1204,8 +1204,8 @@ namespace osl_FileBase
         }
         void createTempFile_004()
         {
-            nError1 = FileBase::createTempFile( pUStr_DirURL, 0, pUStr_FileURL );
-            bOK = ( pUStr_FileURL != 0);
+            nError1 = FileBase::createTempFile( pUStr_DirURL, nullptr, pUStr_FileURL );
+            bOK = ( pUStr_FileURL != nullptr);
             CPPUNIT_ASSERT(bOK);
             ::osl::File testFile( *pUStr_FileURL );
             nError2 = testFile.open( osl_File_OpenFlag_Create );
@@ -1314,7 +1314,7 @@ namespace osl_FileStatus
 
         public:
         isValid()
-            : pDir(NULL)
+            : pDir(nullptr)
         {
         }
 
@@ -1792,10 +1792,10 @@ namespace osl_FileStatus
         // test code.
         void getAccessTime_001()
         {
-            TimeValue *pTV_current = NULL;
-            CPPUNIT_ASSERT( ( pTV_current = static_cast<TimeValue*>(malloc( sizeof( TimeValue ) )) ) != NULL );
-            TimeValue *pTV_access = NULL;
-            CPPUNIT_ASSERT( ( pTV_access = static_cast<TimeValue*>(malloc( sizeof( TimeValue ) )) ) != NULL );
+            TimeValue *pTV_current = nullptr;
+            CPPUNIT_ASSERT( ( pTV_current = static_cast<TimeValue*>(malloc( sizeof( TimeValue ) )) ) != nullptr );
+            TimeValue *pTV_access = nullptr;
+            CPPUNIT_ASSERT( ( pTV_access = static_cast<TimeValue*>(malloc( sizeof( TimeValue ) )) ) != nullptr );
 
               ::osl::FileStatus   rFileStatus( osl_FileStatus_Mask_AccessTime );
             nError = rItem.getFileStatus( rFileStatus );
@@ -1832,8 +1832,8 @@ namespace osl_FileStatus
         // test code.
         void getModifyTime_001()
         {
-            TimeValue *pTV_current = NULL;
-            CPPUNIT_ASSERT( ( pTV_current = static_cast<TimeValue*>(malloc( sizeof( TimeValue ) )) ) != NULL );
+            TimeValue *pTV_current = nullptr;
+            CPPUNIT_ASSERT( ( pTV_current = static_cast<TimeValue*>(malloc( sizeof( TimeValue ) )) ) != nullptr );
 
             //create file
             aTypeURL = aUserDirectoryURL.copy( 0 );
@@ -1852,8 +1852,8 @@ namespace osl_FileStatus
             CPPUNIT_ASSERT( nError == FileBase::E_None );
 
             //get modify time
-            TimeValue* pTV_modify = NULL;
-            CPPUNIT_ASSERT( ( pTV_modify = static_cast<TimeValue*>(malloc( sizeof( TimeValue ) )) ) != NULL );
+            TimeValue* pTV_modify = nullptr;
+            CPPUNIT_ASSERT( ( pTV_modify = static_cast<TimeValue*>(malloc( sizeof( TimeValue ) )) ) != nullptr );
             *pTV_modify = rFileStatus.getModifyTime();
 
             bool bOK = t_compareTime( pTV_modify, pTV_current, delta );
@@ -3451,14 +3451,14 @@ namespace osl_File
         // test code.
         void setTime_001()
         {
-             TimeValue *pTV_current  = NULL;
-            CPPUNIT_ASSERT( ( pTV_current = static_cast<TimeValue*>(malloc( sizeof( TimeValue ) )) ) != NULL );
-            TimeValue *pTV_creation = NULL;
-            CPPUNIT_ASSERT( ( pTV_creation = static_cast<TimeValue*>(malloc( sizeof( TimeValue ) )) ) != NULL );
-            TimeValue *pTV_access   = NULL;
-            CPPUNIT_ASSERT( ( pTV_access = static_cast<TimeValue*>(malloc( sizeof( TimeValue ) )) ) != NULL );
-            TimeValue *pTV_modify   = NULL;
-            CPPUNIT_ASSERT( ( pTV_modify = static_cast<TimeValue*>(malloc( sizeof( TimeValue ) )) ) != NULL );
+             TimeValue *pTV_current  = nullptr;
+            CPPUNIT_ASSERT( ( pTV_current = static_cast<TimeValue*>(malloc( sizeof( TimeValue ) )) ) != nullptr );
+            TimeValue *pTV_creation = nullptr;
+            CPPUNIT_ASSERT( ( pTV_creation = static_cast<TimeValue*>(malloc( sizeof( TimeValue ) )) ) != nullptr );
+            TimeValue *pTV_access   = nullptr;
+            CPPUNIT_ASSERT( ( pTV_access = static_cast<TimeValue*>(malloc( sizeof( TimeValue ) )) ) != nullptr );
+            TimeValue *pTV_modify   = nullptr;
+            CPPUNIT_ASSERT( ( pTV_modify = static_cast<TimeValue*>(malloc( sizeof( TimeValue ) )) ) != nullptr );
 
             //get current time
             bool bOk = osl_getSystemTime( pTV_current );
@@ -4666,7 +4666,7 @@ namespace osl_Directory
                 return;
 
             rtl::OUString aTmpDir;
-            nError1 = FileBase::createTempFile(NULL, NULL, &aTmpDir);
+            nError1 = FileBase::createTempFile(nullptr, nullptr, &aTmpDir);
             CPPUNIT_ASSERT_MESSAGE("temp File creation failed", osl::FileBase::E_None == nError1);
 
             nError1 = ::osl::File::remove(aTmpDir);
@@ -4850,7 +4850,7 @@ namespace osl_Directory
             CPPUNIT_ASSERT_MESSAGE
             (
              "mkdtemp call failed",
-             out != NULL
+             out != nullptr
             );
 
             tmp_x += rtl::OString('/');
diff --git a/sal/qa/osl/file/osl_old_test_file.cxx b/sal/qa/osl/file/osl_old_test_file.cxx
index 402bbfb483d1..647083201213 100644
--- a/sal/qa/osl/file/osl_old_test_file.cxx
+++ b/sal/qa/osl/file/osl_old_test_file.cxx
@@ -64,7 +64,7 @@ const char * const aSource1[] =
     "a/b/c/d"   , "file:///" TEST_VOLUME "bla/a/b/c/d",
     "a/./c"   , "file:///" TEST_VOLUME "bla/a/c",
     "file:///bla/blub", "file:///"  "bla/blub",
-    0 , 0
+    nullptr , nullptr
 };
 
 const char * const aSource2[ ] =
@@ -76,7 +76,7 @@ const char * const aSource2[ ] =
     "../../a", "file:///" TEST_VOLUME "bla/a",
     "../../../a", "file:///" TEST_VOLUME "a",
     "../../../a/b/c/d", "file:///" TEST_VOLUME "a/b/c/d",
-    0,0
+    nullptr,nullptr
 };
 
 using ::rtl::OUString;
diff --git a/sal/qa/osl/file/test_cpy_wrt_file.cxx b/sal/qa/osl/file/test_cpy_wrt_file.cxx
index 4dc3fe19a489..2addac8cf9ef 100644
--- a/sal/qa/osl/file/test_cpy_wrt_file.cxx
+++ b/sal/qa/osl/file/test_cpy_wrt_file.cxx
@@ -40,7 +40,7 @@ public:
 
         //create a tempfile
         rtl::OUString aTmpFile;
-        err = FileBase::createTempFile(NULL, NULL, &aTmpFile);
+        err = FileBase::createTempFile(nullptr, nullptr, &aTmpFile);
         CPPUNIT_ASSERT_MESSAGE("temp File creation failed", err == osl::FileBase::E_None);
 
         //now attempt to open with Create flag an existing file, should get E_EXIST
diff --git a/sal/qa/osl/module/osl_Module.cxx b/sal/qa/osl/module/osl_Module.cxx
index 171e9d61b6b9..571523e55e9b 100644
--- a/sal/qa/osl/module/osl_Module.cxx
+++ b/sal/qa/osl/module/osl_Module.cxx
@@ -200,7 +200,7 @@ namespace osl_Module
             ::osl::Module aMod( getDllURL( ) );
 
             aMod.unload( );
-            bRes = oslModule(aMod) ==NULL;
+            bRes = oslModule(aMod) ==nullptr;
 
             CPPUNIT_ASSERT_MESSAGE( "#test comment#: unload function should do the same thing as destructor.",
                                     bRes );
@@ -287,10 +287,10 @@ namespace osl_Module
 #if !defined( MACOSX )
             // TODO: Find out why this fails on Mac OS X
             ::osl::Module aMod;
-            bRes = ( static_cast<oslModule>(aMod) == NULL );
+            bRes = ( static_cast<oslModule>(aMod) == nullptr );
 
             aMod.load( getDllURL( ) );
-            bRes1 = static_cast<oslModule>(aMod) != NULL;
+            bRes1 = static_cast<oslModule>(aMod) != nullptr;
 
             aMod.unload( );
 
diff --git a/sal/qa/osl/pipe/osl_Pipe.cxx b/sal/qa/osl/pipe/osl_Pipe.cxx
index 9f04b503014f..529c113ced76 100644
--- a/sal/qa/osl/pipe/osl_Pipe.cxx
+++ b/sal/qa/osl/pipe/osl_Pipe.cxx
@@ -208,7 +208,7 @@ namespace osl_Pipe
                 ::osl::Pipe aPipe( test::uniquePipeName(aTestPipeName), osl_Pipe_CREATE );
                 /// constructs two pipes without acquiring the handle on the base pipe.
                 ::osl::Pipe aAcquirePipe( aPipe.getHandle( ) );
-                ::osl::Pipe aAcquirePipe1( NULL );
+                ::osl::Pipe aAcquirePipe1( nullptr );
 
                 bRes = aAcquirePipe.is( );
                 bRes1 = aAcquirePipe1.is( );
@@ -257,7 +257,7 @@ namespace osl_Pipe
 
         void is_004( )
             {
-                ::osl::Pipe aPipe( NULL );
+                ::osl::Pipe aPipe( nullptr );
 
                 CPPUNIT_ASSERT_MESSAGE( "#test comment#: test is(), an invalid constructor.", !aPipe.is( ) );
             }
diff --git a/sal/qa/osl/process/osl_process.cxx b/sal/qa/osl/process/osl_process.cxx
index 07440dd27a90..7b29a84c667b 100644
--- a/sal/qa/osl/process/osl_process.cxx
+++ b/sal/qa/osl/process/osl_process.cxx
@@ -171,7 +171,7 @@ namespace
 #else
     void read_parent_environment(string_container_t* env_container)
     {
-        for (int i = 0; NULL != environ[i]; i++)
+        for (int i = 0; nullptr != environ[i]; i++)
             env_container->push_back(OString(environ[i]));
         tidy_container(*env_container);
     }
@@ -213,7 +213,7 @@ public:
 
     OUString create_temp_file(OUString &temp_file_url)
     {
-        FileBase::RC rc = FileBase::createTempFile(0, 0, &temp_file_url);
+        FileBase::RC rc = FileBase::createTempFile(nullptr, nullptr, &temp_file_url);
         CPPUNIT_ASSERT_EQUAL_MESSAGE("createTempFile failed", FileBase::E_None, rc);
 
         OUString temp_file_path;
@@ -349,9 +349,9 @@ public:
             parameters_,
             parameters_count_,
             osl_Process_NORMAL,
-            NULL,
+            nullptr,
             suCWD.pData,
-            NULL,
+            nullptr,
             0,
             &process);
 
@@ -398,7 +398,7 @@ public:
             parameters_,
             parameters_count_,
             osl_Process_NORMAL,
-            NULL,
+            nullptr,
             suCWD.pData,
             child_env,
             SAL_N_ELEMENTS(child_env),
@@ -442,12 +442,12 @@ public:
 #endif
         oslProcessError osl_error = osl_executeProcess(
             suBatch.pData,
-            NULL,
+            nullptr,
             0,
             osl_Process_NORMAL,
-            NULL,
+            nullptr,
             suCWD.pData,
-            NULL,
+            nullptr,
             0,
             &process);
 
diff --git a/sal/qa/osl/process/osl_process_child.cxx b/sal/qa/osl/process/osl_process_child.cxx
index feabd1dc6e7d..f709de940c51 100644
--- a/sal/qa/osl/process/osl_process_child.cxx
+++ b/sal/qa/osl/process/osl_process_child.cxx
@@ -82,7 +82,7 @@ void w_to_a(LPCTSTR _strW, LPSTR strA, DWORD size)
     void dump_env(char* file_path)
     {
         std::ofstream file(file_path);
-        for (int i = 0; NULL != environ[i]; ++i)
+        for (int i = 0; nullptr != environ[i]; ++i)
             file << environ[i] << '\0';
     }
 #endif
diff --git a/sal/qa/osl/profile/osl_old_testprofile.cxx b/sal/qa/osl/profile/osl_old_testprofile.cxx
index 3cfba1247d65..5389c0cdb100 100644
--- a/sal/qa/osl/profile/osl_old_testprofile.cxx
+++ b/sal/qa/osl/profile/osl_old_testprofile.cxx
@@ -45,14 +45,14 @@ void oldtests::test_profile()
 
     // successful write
     oslProfile hProfile = osl_openProfile( rtl::OUString(baseUrl + "/soffice.ini").pData, osl_Profile_WRITELOCK );
-    CPPUNIT_ASSERT(hProfile != 0);
+    CPPUNIT_ASSERT(hProfile != nullptr);
     CPPUNIT_ASSERT_MESSAGE(
         "cannot write into init file",
         osl_writeProfileBool( hProfile, "testsection", "testbool", 1 ));
     CPPUNIT_ASSERT(osl_closeProfile( hProfile ));
 
     // unsuccessful open
-    CPPUNIT_ASSERT_EQUAL(oslProfile(0), osl_openProfile( rtl::OUString(baseUrl + "/not_existing_path/soffice.ini").pData, osl_Profile_WRITELOCK ));
+    CPPUNIT_ASSERT_EQUAL(oslProfile(nullptr), osl_openProfile( rtl::OUString(baseUrl + "/not_existing_path/soffice.ini").pData, osl_Profile_WRITELOCK ));
 }
 
 } // namespace osl_Profile
diff --git a/sal/qa/osl/security/osl_Security.cxx b/sal/qa/osl/security/osl_Security.cxx
index a5cc2a03238d..693137fd9ab9 100644
--- a/sal/qa/osl/security/osl_Security.cxx
+++ b/sal/qa/osl/security/osl_Security.cxx
@@ -59,7 +59,7 @@ namespace osl_Security
             ::osl::Security aSec;
 
             CPPUNIT_ASSERT_MESSAGE( "#test comment#: create a security  its handle should not be NULL.",
-                                    aSec.getHandle( ) != NULL );
+                                    aSec.getHandle( ) != nullptr );
         }
 
         CPPUNIT_TEST_SUITE( ctors );
@@ -327,7 +327,7 @@ void MyTestPlugInImpl::initialize( CPPUNIT_NS::TestFactoryRegistry *,
     /// some initialization work for UNIX OS
 
     struct passwd* pw;
-    CPPUNIT_ASSERT_MESSAGE( "getpwuid: no password entry\n",( pw = getpwuid( getuid() ) ) != NULL );
+    CPPUNIT_ASSERT_MESSAGE( "getpwuid: no password entry\n",( pw = getpwuid( getuid() ) ) != nullptr );
 
     /// get user ID;
     strUserID = OUString::number( getuid( ) );
diff --git a/sal/qa/osl/setthreadname/test-setthreadname.cxx b/sal/qa/osl/setthreadname/test-setthreadname.cxx
index 3b05e392c20d..02e6eb76855a 100644
--- a/sal/qa/osl/setthreadname/test-setthreadname.cxx
+++ b/sal/qa/osl/setthreadname/test-setthreadname.cxx
@@ -46,7 +46,7 @@ void TestThread::run() {
     }
 #endif
     setName("TestThread");
-    if (std::getenv("URE_TEST_SETTHREADNAME") != 0) {
+    if (std::getenv("URE_TEST_SETTHREADNAME") != nullptr) {
         // On Linux, the thread name can now be observed with "ps -L"; on
         // Windows with the Microsoft compiler, the thread name can now be
         // observed in a debugger.
diff --git a/sal/qa/rtl/alloc/rtl_alloc.cxx b/sal/qa/rtl/alloc/rtl_alloc.cxx
index 1a588653edf7..f567aa32ed4d 100644
--- a/sal/qa/rtl/alloc/rtl_alloc.cxx
+++ b/sal/qa/rtl/alloc/rtl_alloc.cxx
@@ -52,7 +52,7 @@ class Memory : public CppUnit::TestFixture
 
 public:
     Memory()
-        : m_pMemory(NULL)
+        : m_pMemory(nullptr)
         , m_nSizeOfMemory(1024)
     {
     }
@@ -66,12 +66,12 @@ public:
     void tearDown() override
     {
         rtl_freeMemory(m_pMemory);
-        m_pMemory = NULL;
+        m_pMemory = nullptr;
     }
 
     void rtl_allocateMemory_001()
     {
-        CPPUNIT_ASSERT_MESSAGE( "Can get zero memory.", m_pMemory != NULL);
+        CPPUNIT_ASSERT_MESSAGE( "Can get zero memory.", m_pMemory != nullptr);
         memset(m_pMemory, 1, m_nSizeOfMemory);
         CPPUNIT_ASSERT_MESSAGE( "memory contains wrong value.", checkMemory(m_pMemory, m_nSizeOfMemory, 1));
     }
@@ -81,7 +81,7 @@ public:
         sal_uInt32 nSize = 2 * 1024;
         m_pMemory = static_cast<char*>(rtl_reallocateMemory(m_pMemory, nSize));
 
-        CPPUNIT_ASSERT_MESSAGE( "Can reallocate memory.", m_pMemory != NULL);
+        CPPUNIT_ASSERT_MESSAGE( "Can reallocate memory.", m_pMemory != nullptr);
         memset(m_pMemory, 2, nSize);
         CPPUNIT_ASSERT_MESSAGE( "memory contains wrong value.", checkMemory(m_pMemory, nSize, 2));
     }
@@ -100,7 +100,7 @@ class TestZeroMemory : public CppUnit::TestFixture
 
 public:
     TestZeroMemory()
-        : m_pZeroMemory(NULL)
+        : m_pZeroMemory(nullptr)
         , m_nSizeOfZeroMemory( 50 * 1024 * 1024 )
     {
     }
@@ -122,7 +122,7 @@ public:
 
     void rtl_allocateZeroMemory_001()
     {
-        CPPUNIT_ASSERT_MESSAGE( "Can get zero memory.", m_pZeroMemory != NULL);
+        CPPUNIT_ASSERT_MESSAGE( "Can get zero memory.", m_pZeroMemory != nullptr);
         CPPUNIT_ASSERT_MESSAGE( "memory contains wrong value.", checkMemory(m_pZeroMemory, m_nSizeOfZeroMemory, 0));
 
         memset(m_pZeroMemory, 3, m_nSizeOfZeroMemory);
diff --git a/sal/qa/rtl/cipher/rtl_cipher.cxx b/sal/qa/rtl/cipher/rtl_cipher.cxx
index 842ce97c9d93..0a477699f464 100644
--- a/sal/qa/rtl/cipher/rtl_cipher.cxx
+++ b/sal/qa/rtl/cipher/rtl_cipher.cxx
@@ -45,45 +45,45 @@ public:
     void create_001()
         {
             rtlCipher aCipher = rtl_cipher_create(rtl_Cipher_AlgorithmBF, rtl_Cipher_ModeECB);
-            CPPUNIT_ASSERT_MESSAGE("create failed.", aCipher != NULL);
+            CPPUNIT_ASSERT_MESSAGE("create failed.", aCipher != nullptr);
             rtl_cipher_destroy(aCipher);
         }
     void create_002()
         {
             rtlCipher aCipher = rtl_cipher_create(rtl_Cipher_AlgorithmInvalid, rtl_Cipher_ModeECB);
-            CPPUNIT_ASSERT_MESSAGE("create provide wrong object.", aCipher == NULL);
+            CPPUNIT_ASSERT_MESSAGE("create provide wrong object.", aCipher == nullptr);
         }
     void create_003()
         {
             rtlCipher aCipher = rtl_cipher_create(rtl_Cipher_AlgorithmBF, rtl_Cipher_ModeCBC);
-            CPPUNIT_ASSERT_MESSAGE("create failed.", aCipher != NULL);
+            CPPUNIT_ASSERT_MESSAGE("create failed.", aCipher != nullptr);
             rtl_cipher_destroy(aCipher);
         }
     void create_004()
         {
             rtlCipher aCipher = rtl_cipher_create(rtl_Cipher_AlgorithmInvalid, rtl_Cipher_ModeCBC);
-            CPPUNIT_ASSERT_MESSAGE("create provide wrong object.", aCipher == NULL);
+            CPPUNIT_ASSERT_MESSAGE("create provide wrong object.", aCipher == nullptr);
         }
     void create_005()
         {
             rtlCipher aCipher = rtl_cipher_create(rtl_Cipher_AlgorithmBF, rtl_Cipher_ModeStream);
-            CPPUNIT_ASSERT_MESSAGE("create failed.", aCipher != NULL);
+            CPPUNIT_ASSERT_MESSAGE("create failed.", aCipher != nullptr);
             rtl_cipher_destroy(aCipher);
         }
     void create_006()
         {
             rtlCipher aCipher = rtl_cipher_create(rtl_Cipher_AlgorithmInvalid, rtl_Cipher_ModeStream);
-            CPPUNIT_ASSERT_MESSAGE("create provide wrong object.", aCipher == NULL);
+            CPPUNIT_ASSERT_MESSAGE("create provide wrong object.", aCipher == nullptr);
         }
     void create_007()
         {
             rtlCipher aCipher = rtl_cipher_create(rtl_Cipher_AlgorithmBF, rtl_Cipher_ModeInvalid);
-            CPPUNIT_ASSERT_MESSAGE("create provide wrong object.", aCipher == NULL);
+            CPPUNIT_ASSERT_MESSAGE("create provide wrong object.", aCipher == nullptr);
         }
     void create_008()
         {
             rtlCipher aCipher = rtl_cipher_create(rtl_Cipher_AlgorithmInvalid, rtl_Cipher_ModeInvalid);
-            CPPUNIT_ASSERT_MESSAGE("create provide wrong object.", aCipher == NULL);
+            CPPUNIT_ASSERT_MESSAGE("create provide wrong object.", aCipher == nullptr);
         }
 
     // Change the following lines only, if you add, remove or rename
@@ -117,25 +117,25 @@ public:
     void createBF_001()
         {
             rtlCipher aCipher = rtl_cipher_createBF(rtl_Cipher_ModeECB);
-            CPPUNIT_ASSERT_MESSAGE("create failed.", aCipher != NULL);
+            CPPUNIT_ASSERT_MESSAGE("create failed.", aCipher != nullptr);
             rtl_cipher_destroy(aCipher);
         }
     void createBF_002()
         {
             rtlCipher aCipher = rtl_cipher_createBF(rtl_Cipher_ModeCBC);
-            CPPUNIT_ASSERT_MESSAGE("create failed.", aCipher != NULL);
+            CPPUNIT_ASSERT_MESSAGE("create failed.", aCipher != nullptr);
             rtl_cipher_destroy(aCipher);
         }
     void createBF_003()
         {
             rtlCipher aCipher = rtl_cipher_createBF(rtl_Cipher_ModeStream);
-            CPPUNIT_ASSERT_MESSAGE("create failed.", aCipher != NULL);
+            CPPUNIT_ASSERT_MESSAGE("create failed.", aCipher != nullptr);
             rtl_cipher_destroy(aCipher);
         }
     void createBF_004()
         {
             rtlCipher aCipher = rtl_cipher_createBF(rtl_Cipher_ModeInvalid);
-            CPPUNIT_ASSERT_MESSAGE("create provide wrong object.", aCipher == NULL);
+            CPPUNIT_ASSERT_MESSAGE("create provide wrong object.", aCipher == nullptr);
             // rtl_cipher_destroy(aCipher);
         }
     // Change the following lines only, if you add, remove or rename
@@ -165,7 +165,7 @@ public:
     void test_encode(sal_uInt8 _nKeyValue, sal_uInt8 _nArgValue, rtl::OString const& _sPlainTextStr)
         {
             rtlCipher aCipher = rtl_cipher_create(rtl_Cipher_AlgorithmBF, rtl_Cipher_ModeECB);
-            CPPUNIT_ASSERT_MESSAGE("create failed.", aCipher != NULL);
+            CPPUNIT_ASSERT_MESSAGE("create failed.", aCipher != nullptr);
 
             sal_uInt32     nKeyLen = 16;
             sal_uInt8     *pKeyBuffer = new sal_uInt8[ nKeyLen ];
@@ -213,7 +213,7 @@ public:
     void test_encode_and_decode(sal_uInt8 _nKeyValue, sal_uInt8 _nArgValue, rtl::OString const& _sPlainTextStr)
         {
             rtlCipher aCipher = rtl_cipher_create(rtl_Cipher_AlgorithmBF, rtl_Cipher_ModeECB);
-            CPPUNIT_ASSERT_MESSAGE("create failed.", aCipher != NULL);
+            CPPUNIT_ASSERT_MESSAGE("create failed.", aCipher != nullptr);
 
             sal_uInt32     nKeyLen = 16;
             sal_uInt8     *pKeyBuffer = new sal_uInt8[ nKeyLen ];
@@ -326,7 +326,7 @@ public:
     void destroy_001()
         {
             rtlCipher aCipher = rtl_cipher_create(rtl_Cipher_AlgorithmBF, rtl_Cipher_ModeCBC);
-            CPPUNIT_ASSERT_MESSAGE("create failed.", aCipher != NULL);
+            CPPUNIT_ASSERT_MESSAGE("create failed.", aCipher != nullptr);
             rtl_cipher_destroy(aCipher);
         }
     // Change the following lines only, if you add, remove or rename
@@ -353,7 +353,7 @@ public:
     void destroyBF_001()
         {
             rtlCipher aCipher = rtl_cipher_createBF(rtl_Cipher_ModeECB);
-            CPPUNIT_ASSERT_MESSAGE("create failed.", aCipher != NULL);
+            CPPUNIT_ASSERT_MESSAGE("create failed.", aCipher != nullptr);
             rtl_cipher_destroyBF(aCipher);
             // more proforma
             // should not GPF
@@ -382,7 +382,7 @@ public:
     void test_encode(sal_uInt8 _nKeyValue, sal_uInt8 _nArgValue, sal_uInt8 _nDataValue)
         {
             rtlCipher aCipher = rtl_cipher_create(rtl_Cipher_AlgorithmBF, rtl_Cipher_ModeECB);
-            CPPUNIT_ASSERT_MESSAGE("create failed.", aCipher != NULL);
+            CPPUNIT_ASSERT_MESSAGE("create failed.", aCipher != nullptr);
 
             sal_uInt32     nKeyLen = 16;
             sal_uInt8     *pKeyBuffer = new sal_uInt8[ nKeyLen ];
@@ -479,7 +479,7 @@ public:
     void init_001()
         {
             rtlCipher aCipher = rtl_cipher_create(rtl_Cipher_AlgorithmBF, rtl_Cipher_ModeECB);
-            CPPUNIT_ASSERT_MESSAGE("create failed.", aCipher != NULL);
+            CPPUNIT_ASSERT_MESSAGE("create failed.", aCipher != nullptr);
 
             sal_uInt32     nKeyLen = 16;
             sal_uInt8     *pKeyBuffer = new sal_uInt8[ nKeyLen ];
@@ -501,7 +501,7 @@ public:
     void init_002()
         {
             rtlCipher aCipher = rtl_cipher_create(rtl_Cipher_AlgorithmBF, rtl_Cipher_ModeECB);
-            CPPUNIT_ASSERT_MESSAGE("create failed.", aCipher != NULL);
+            CPPUNIT_ASSERT_MESSAGE("create failed.", aCipher != nullptr);
 
             sal_uInt32     nKeyLen = 16;
             sal_uInt8     *pKeyBuffer = new sal_uInt8[ nKeyLen ];
@@ -523,7 +523,7 @@ public:
     void init_003()
         {
             rtlCipher aCipher = rtl_cipher_create(rtl_Cipher_AlgorithmBF, rtl_Cipher_ModeECB);
-            CPPUNIT_ASSERT_MESSAGE("create failed.", aCipher != NULL);
+            CPPUNIT_ASSERT_MESSAGE("create failed.", aCipher != nullptr);
 
             sal_uInt32     nKeyLen = 16;
             sal_uInt8     *pKeyBuffer = new sal_uInt8[ nKeyLen ];
@@ -545,7 +545,7 @@ public:
     void init_004()
         {
             rtlCipher aCipher = rtl_cipher_create(rtl_Cipher_AlgorithmBF, rtl_Cipher_ModeECB);
-            CPPUNIT_ASSERT_MESSAGE("create failed.", aCipher != NULL);
+            CPPUNIT_ASSERT_MESSAGE("create failed.", aCipher != nullptr);
 
             sal_uInt32     nKeyLen = 16;
             sal_uInt8     *pKeyBuffer = new sal_uInt8[ nKeyLen ];
diff --git a/sal/qa/rtl/digest/rtl_digest.cxx b/sal/qa/rtl/digest/rtl_digest.cxx
index 52ebb81ffb12..4a1b2276c727 100644
--- a/sal/qa/rtl/digest/rtl_digest.cxx
+++ b/sal/qa/rtl/digest/rtl_digest.cxx
@@ -114,12 +114,12 @@ public:
         for (int i = 0; i < aAlgorithmSize; i++)
         {
             rtlDigest handle = rtl_digest_create( constDigestAlgorithms[i] );
-            CPPUNIT_ASSERT_MESSAGE("create digest", handle != NULL);
+            CPPUNIT_ASSERT_MESSAGE("create digest", handle != nullptr);
             rtl_digest_destroy( handle );
         }
 
         rtlDigest handle = rtl_digest_create( rtl_Digest_AlgorithmInvalid );
-        CPPUNIT_ASSERT_MESSAGE("create invalid digest", handle == NULL);
+        CPPUNIT_ASSERT_MESSAGE("create invalid digest", handle == nullptr);
         rtl_digest_destroy( handle );
     }
 
@@ -162,12 +162,12 @@ public:
         rtlDigestError aError;
         rtlDigest handle;
 
-        handle = NULL;
-        aError = rtl_digest_init(handle, NULL, 0);
+        handle = nullptr;
+        aError = rtl_digest_init(handle, nullptr, 0);
         CPPUNIT_ASSERT_MESSAGE("init(NULL, 0, 0)", aError == rtl_Digest_E_Argument);
 
         handle = rtl_digest_create( rtl_Digest_AlgorithmMD5 );
-        aError = rtl_digest_init(handle, NULL, 0);
+        aError = rtl_digest_init(handle, nullptr, 0);
         CPPUNIT_ASSERT_MESSAGE("init(handle, 0, 0)", aError == rtl_Digest_E_None);
         rtl_digest_destroy( handle );
 
@@ -285,24 +285,24 @@ public:
         rtlDigestError aError;
         rtlDigest aHandle;
 
-        aHandle = NULL;
-        aError = rtl_digest_update(aHandle, NULL, 0);
+        aHandle = nullptr;
+        aError = rtl_digest_update(aHandle, nullptr, 0);
         CPPUNIT_ASSERT_MESSAGE("does not handle wrong parameter", aError == rtl_Digest_E_Argument);
 
-        aHandle = NULL;
-        aError = rtl_digest_updateMD2(aHandle, NULL, 0);
+        aHandle = nullptr;
+        aError = rtl_digest_updateMD2(aHandle, nullptr, 0);
         CPPUNIT_ASSERT_MESSAGE("does not handle wrong parameter", aError == rtl_Digest_E_Argument);
 
-        aError = rtl_digest_updateMD5(aHandle, NULL, 0);
+        aError = rtl_digest_updateMD5(aHandle, nullptr, 0);
         CPPUNIT_ASSERT_MESSAGE("does not handle wrong parameter", aError == rtl_Digest_E_Argument);
 
         aHandle = rtl_digest_create( rtl_Digest_AlgorithmMD2 );
-        CPPUNIT_ASSERT_MESSAGE("create with rtl_Digest_AlgorithmMD2", aHandle != 0);
+        CPPUNIT_ASSERT_MESSAGE("create with rtl_Digest_AlgorithmMD2", aHandle != nullptr);
 
         const sal_uInt8* pData = reinterpret_cast<const sal_uInt8*>(sSampleString.getStr());
         sal_uInt32       nSize = sSampleString.getLength();
 
-        aError = rtl_digest_updateMD2(aHandle, NULL, 0);
+        aError = rtl_digest_updateMD2(aHandle, nullptr, 0);
         CPPUNIT_ASSERT_MESSAGE("handle parameter 'pData' wrong", aError == rtl_Digest_E_Argument);
 
         aError = rtl_digest_updateMD2(aHandle, pData, 0);
@@ -312,7 +312,7 @@ public:
 
         // use wrong Algorithm!!! This is volitional!
         aHandle = rtl_digest_create(rtl_Digest_AlgorithmMD2);
-        CPPUNIT_ASSERT_MESSAGE("create with rtl_Digest_AlgorithmMD2", aHandle != 0);
+        CPPUNIT_ASSERT_MESSAGE("create with rtl_Digest_AlgorithmMD2", aHandle != nullptr);
 
         aError = rtl_digest_updateMD5(aHandle, pData, nSize);
         CPPUNIT_ASSERT_MESSAGE("handle parameter 'handle' wrong", aError == rtl_Digest_E_Algorithm);
@@ -320,9 +320,9 @@ public:
         rtl_digest_destroyMD5(aHandle);
 
         aHandle = rtl_digest_create( rtl_Digest_AlgorithmMD5 );
-        CPPUNIT_ASSERT_MESSAGE("create with rtl_Digest_AlgorithmMD5", aHandle != 0);
+        CPPUNIT_ASSERT_MESSAGE("create with rtl_Digest_AlgorithmMD5", aHandle != nullptr);
 
-        aError = rtl_digest_updateMD5(aHandle, NULL, 0);
+        aError = rtl_digest_updateMD5(aHandle, nullptr, 0);
         CPPUNIT_ASSERT_MESSAGE("handle parameter 'pData' wrong", aError == rtl_Digest_E_Argument);
 
         aError = rtl_digest_updateMD5(aHandle, pData, 0);
@@ -336,22 +336,22 @@ public:
         rtlDigest aHandle;
         rtlDigestError aError;
 
-        aHandle = NULL;
-        aError = rtl_digest_get(aHandle, NULL, 0);
+        aHandle = nullptr;
+        aError = rtl_digest_get(aHandle, nullptr, 0);
         CPPUNIT_ASSERT_MESSAGE("does not handle wrong parameter", aError == rtl_Digest_E_Argument);
 
-        aHandle = NULL;
-        aError = rtl_digest_getMD5(aHandle, NULL, 0);
+        aHandle = nullptr;
+        aError = rtl_digest_getMD5(aHandle, nullptr, 0);
         CPPUNIT_ASSERT_MESSAGE("does not handle wrong parameter", aError == rtl_Digest_E_Argument);
 
         // test with wrong algorithm
         aHandle = rtl_digest_create(rtl_Digest_AlgorithmMD2);
-        CPPUNIT_ASSERT_MESSAGE("create with rtl_Digest_AlgorithmMD2", aHandle != 0);
+        CPPUNIT_ASSERT_MESSAGE("create with rtl_Digest_AlgorithmMD2", aHandle != nullptr);
 
         sal_uInt32 nKeyLen = rtl_digest_queryLength(aHandle);
         std::unique_ptr<sal_uInt8[]> pKeyBuffer(new sal_uInt8[nKeyLen]);
 
-        aError = rtl_digest_getMD5(aHandle, NULL, 0);
+        aError = rtl_digest_getMD5(aHandle, nullptr, 0);
         CPPUNIT_ASSERT_MESSAGE("handle 2. parameter wrong", aError == rtl_Digest_E_Argument);
 
         aError = rtl_digest_getMD5(aHandle, pKeyBuffer.get(), 0);
@@ -360,9 +360,9 @@ public:
         rtl_digest_destroyMD2(aHandle);
 
         aHandle = rtl_digest_create(rtl_Digest_AlgorithmMD5);
-        CPPUNIT_ASSERT_MESSAGE("create with rtl_Digest_AlgorithmMD5", aHandle != 0);
+        CPPUNIT_ASSERT_MESSAGE("create with rtl_Digest_AlgorithmMD5", aHandle != nullptr);
 
-        aError = rtl_digest_getMD5(aHandle, NULL, nKeyLen);
+        aError = rtl_digest_getMD5(aHandle, nullptr, nKeyLen);
         CPPUNIT_ASSERT_MESSAGE("handle parameter 'pData' wrong", aError == rtl_Digest_E_Argument );
 
         aError = rtl_digest_getMD5(aHandle, pKeyBuffer.get(), 0);
diff --git a/sal/qa/rtl/locale/rtl_locale.cxx b/sal/qa/rtl/locale/rtl_locale.cxx
index 44f6996b8056..fc99838ee573 100644
--- a/sal/qa/rtl/locale/rtl_locale.cxx
+++ b/sal/qa/rtl/locale/rtl_locale.cxx
@@ -51,7 +51,7 @@ public:
     void getDefault_001()
     {
         rtl_Locale* pData = rtl_locale_getDefault();
-        CPPUNIT_ASSERT_MESSAGE("locale must not null", pData != NULL);
+        CPPUNIT_ASSERT_MESSAGE("locale must not null", pData != nullptr);
     }
 
     // Change the following lines only, if you add, remove or rename
@@ -83,7 +83,7 @@ public:
     {
         rtl_locale_setDefault(rtl::OUString("en").getStr(), rtl::OUString("US").getStr(), rtl::OUString().getStr());
         rtl_Locale* pData = rtl_locale_getDefault();
-        CPPUNIT_ASSERT_MESSAGE("locale must not null", pData != NULL);
+        CPPUNIT_ASSERT_MESSAGE("locale must not null", pData != nullptr);
 
         // be sure to not GPF
     }
diff --git a/sal/qa/rtl/oustring/rtl_OUString2.cxx b/sal/qa/rtl/oustring/rtl_OUString2.cxx
index 2f0b366bccc9..7868b98c6464 100644
--- a/sal/qa/rtl/oustring/rtl_OUString2.cxx
+++ b/sal/qa/rtl/oustring/rtl_OUString2.cxx
@@ -995,7 +995,7 @@ public:
 void createFromCodePoints::test() {
     CPPUNIT_ASSERT_EQUAL(
         sal_Int32(0),
-        rtl::OUString(static_cast< sal_uInt32 const * >(NULL), 0).getLength());
+        rtl::OUString(static_cast< sal_uInt32 const * >(nullptr), 0).getLength());
     static sal_uInt32 const cp[] = { 0, 0xD800, 0xFFFF, 0x10000, 0x10FFFF };
     rtl::OUString s(cp, sizeof cp / sizeof (sal_uInt32));
     CPPUNIT_ASSERT_EQUAL(sal_Int32(7), s.getLength());
diff --git a/sal/qa/rtl/process/rtl_Process.cxx b/sal/qa/rtl/process/rtl_Process.cxx
index ee8dcfa7dd29..d4d7c86b7df5 100644
--- a/sal/qa/rtl/process/rtl_Process.cxx
+++ b/sal/qa/rtl/process/rtl_Process.cxx
@@ -42,9 +42,9 @@ using ::rtl::OUStringToOString;
 
 /** print a UNI_CODE String. And also print some comments of the string.
 */
-inline void printUString( const ::rtl::OUString & str, const sal_Char * msg = NULL )
+inline void printUString( const ::rtl::OUString & str, const sal_Char * msg = nullptr )
 {
-    if ( msg != NULL )
+    if ( msg != nullptr )
     {
         printf("#%s #printUString_u# ", msg );
     }
@@ -93,7 +93,7 @@ public:
         printUString(suCWD, "path to the current module");
         // printUString(suCWD2, "suCWD2");
 
-        oslProcess hProcess = NULL;
+        oslProcess hProcess = nullptr;
 
         const int nParameterCount = 4;
         rtl_uString* pParameters[ nParameterCount ];
@@ -110,9 +110,9 @@ public:
             pParameters,
             nParameterCount,
             osl_Process_WAIT,
-            0, /* osl_getCurrentSecurity() */
+            nullptr, /* osl_getCurrentSecurity() */
             suCWD.pData,
-            NULL,
+            nullptr,
             0,
             &hProcess );
 
@@ -229,22 +229,22 @@ public:
     printf("# UUID to String is %s\n", pUUID1);
 
     rtl::OUString suCWD = getModulePath();
-        oslProcess hProcess = NULL;
+        oslProcess hProcess = nullptr;
        rtl::OUString suFileURL = suCWD + "/" + EXEC_NAME;
     oslFileHandle* pChildOutputRead = new oslFileHandle();
         oslProcessError osl_error = osl_executeProcess_WithRedirectedIO(
             suFileURL.pData,
-            NULL,
+            nullptr,
             0,
             osl_Process_WAIT,
-            0,
+            nullptr,
             suCWD.pData,
-            NULL,
+            nullptr,
             0,
             &hProcess,
-        NULL,
+        nullptr,
         pChildOutputRead,
-        NULL);
+        nullptr);
 
         CPPUNIT_ASSERT_MESSAGE
         (
diff --git a/sal/qa/rtl/strings/test_ostring_concat.cxx b/sal/qa/rtl/strings/test_ostring_concat.cxx
index 0a54c96ae4e0..ba46d9f76397 100644
--- a/sal/qa/rtl/strings/test_ostring_concat.cxx
+++ b/sal/qa/rtl/strings/test_ostring_concat.cxx
@@ -86,7 +86,7 @@ void test::ostring::StringConcat::checkConcat()
 
 void test::ostring::StringConcat::checkEnsureCapacity()
 {
-    rtl_String* str = NULL;
+    rtl_String* str = nullptr;
     rtl_string_newFromLiteral( &str, "test", strlen( "test" ), 0 );
     CPPUNIT_ASSERT_EQUAL( sal_Int32( 4 ), str->length );
     CPPUNIT_ASSERT_EQUAL( 1, int( str->refCount ));
@@ -145,8 +145,8 @@ void test::ostring::StringConcat::checkInvalid()
     CPPUNIT_ASSERT( INVALID_CONCAT( OString( "a" ) + OUStringBuffer( "b" )));
     CPPUNIT_ASSERT( INVALID_CONCAT( OString( "a" ) + OUStringLiteral( "b" )));
     CPPUNIT_ASSERT( INVALID_CONCAT( OString( "a" ) + 1 ));
-    rtl_String* rs = NULL;
-    rtl_uString* rus = NULL;
+    rtl_String* rs = nullptr;
+    rtl_uString* rus = nullptr;
     CPPUNIT_ASSERT( INVALID_CONCAT( OUString( "b" ) + rs ));
     CPPUNIT_ASSERT( INVALID_CONCAT( OUString( "b" ) + rus ));
 }
diff --git a/sal/qa/rtl/strings/test_oustring_concat.cxx b/sal/qa/rtl/strings/test_oustring_concat.cxx
index 3bc69e17cfe8..b319c089d35f 100644
--- a/sal/qa/rtl/strings/test_oustring_concat.cxx
+++ b/sal/qa/rtl/strings/test_oustring_concat.cxx
@@ -87,7 +87,7 @@ void test::oustring::StringConcat::checkConcatAsciiL()
 
 void test::oustring::StringConcat::checkEnsureCapacity()
 {
-    rtl_uString* str = NULL;
+    rtl_uString* str = nullptr;
     rtl_uString_newFromLiteral( &str, "test", strlen( "test" ), 0 );
     CPPUNIT_ASSERT_EQUAL( sal_Int32( 4 ), str->length );
     CPPUNIT_ASSERT_EQUAL( 1, int( str->refCount ));
@@ -154,8 +154,8 @@ void test::oustring::StringConcat::checkInvalid()
     CPPUNIT_ASSERT( INVALID_CONCAT( OUString( "a" ) + static_cast<char*>(d) ));
     CPPUNIT_ASSERT( INVALID_CONCAT( OUString( "a" ) + OStringLiteral( "b" )));
     CPPUNIT_ASSERT( INVALID_CONCAT( OUString( "a" ) + 1 ));
-    rtl_String* rs = NULL;
-    rtl_uString* rus = NULL;
+    rtl_String* rs = nullptr;
+    rtl_uString* rus = nullptr;
     CPPUNIT_ASSERT( INVALID_CONCAT( OUString( "b" ) + rs ));
     CPPUNIT_ASSERT( INVALID_CONCAT( OUString( "b" ) + rus ));
 }
diff --git a/sal/qa/rtl/strings/test_oustring_convert.cxx b/sal/qa/rtl/strings/test_oustring_convert.cxx
index 363c0ffa3516..639d9b744555 100644
--- a/sal/qa/rtl/strings/test_oustring_convert.cxx
+++ b/sal/qa/rtl/strings/test_oustring_convert.cxx
@@ -79,7 +79,7 @@ void testConvertToString(TestConvertToString const & rTest)
 
     if (bSuccess)
     {
-        if (rTest.pStrict == 0 || !aStrict.equals(rTest.pStrict))
+        if (rTest.pStrict == nullptr || !aStrict.equals(rTest.pStrict))
         {
             rtl::OStringBuffer aMessage(aPrefix);
             aMessage.append(RTL_CONSTASCII_STRINGPARAM("strict = \""));
@@ -96,7 +96,7 @@ void testConvertToString(TestConvertToString const & rTest)
             aMessage.append(RTL_CONSTASCII_STRINGPARAM("modified output"));
             CPPUNIT_ASSERT_MESSAGE(aMessage.getStr(), false);
         }
-        if (rTest.pStrict != 0)
+        if (rTest.pStrict != nullptr)
         {
             rtl::OStringBuffer aMessage(aPrefix);
             aMessage.append(RTL_CONSTASCII_STRINGPARAM("failed"));
@@ -149,7 +149,7 @@ void test::oustring::Convert::convertToString()
               RTL_TEXTENCODING_ISO_2022_JP,
               RTL_UNICODETOTEXT_FLAGS_UNDEFINED_ERROR
                   | RTL_UNICODETOTEXT_FLAGS_INVALID_ERROR,
-              0,
+              nullptr,
               "" },
             { { 0x3001,  0xB800 },
               2,
@@ -162,7 +162,7 @@ void test::oustring::Convert::convertToString()
               RTL_TEXTENCODING_ISO_8859_1,
               RTL_UNICODETOTEXT_FLAGS_UNDEFINED_ERROR
                   | RTL_UNICODETOTEXT_FLAGS_INVALID_ERROR,
-              0,
+              nullptr,
               "A" },
             { { 0x0041,0x0100,0x0042 },
               3,
diff --git a/sal/qa/rtl/textenc/rtl_textcvt.cxx b/sal/qa/rtl/textenc/rtl_textcvt.cxx
index 75a6fb7507a3..8a6b4837b39d 100644
--- a/sal/qa/rtl/textenc/rtl_textcvt.cxx
+++ b/sal/qa/rtl/textenc/rtl_textcvt.cxx
@@ -57,10 +57,10 @@ void testSingleByteCharSet(SingleByteCharSet const & rSet) {
             = rtl_createTextToUnicodeConverter(rSet.m_nEncoding);
         CPPUNIT_ASSERT_MESSAGE(OUStringToOString(OUString("rtl_createTextToUnicodeConverter(" + OUString::createFromAscii(rtl_getMimeCharsetFromTextEncoding(rSet.m_nEncoding)) + ") failed"),
                                                  RTL_TEXTENCODING_UTF8).getStr(),
-                               aConverter != NULL);
+                               aConverter != nullptr);
         rtl_TextToUnicodeContext aContext
             = rtl_createTextToUnicodeContext(aConverter);
-        CPPUNIT_ASSERT_MESSAGE("rtl_createTextToUnicodeContext failed", aContext != NULL);
+        CPPUNIT_ASSERT_MESSAGE("rtl_createTextToUnicodeContext failed", aContext != nullptr);
         sal_Size nSize;
         sal_uInt32 nInfo;
         sal_Size nConverted;
@@ -103,10 +103,10 @@ void testSingleByteCharSet(SingleByteCharSet const & rSet) {
             = rtl_createUnicodeToTextConverter(rSet.m_nEncoding);
         CPPUNIT_ASSERT_MESSAGE(OUStringToOString(OUString("rtl_createTextToUnicodeConverter(" + OUString::createFromAscii(rtl_getMimeCharsetFromTextEncoding(rSet.m_nEncoding)) + ") failed"),
                                                  RTL_TEXTENCODING_UTF8).getStr(),
-                               aConverter != NULL);
+                               aConverter != nullptr);
         rtl_UnicodeToTextContext aContext
             = rtl_createUnicodeToTextContext(aConverter);
-        CPPUNIT_ASSERT_MESSAGE("rtl_createTextToUnicodeContext failed", aContext != NULL);
+        CPPUNIT_ASSERT_MESSAGE("rtl_createTextToUnicodeContext failed", aContext != nullptr);
         sal_Size nSize;
         sal_uInt32 nInfo;
         sal_Size nConverted;
@@ -147,10 +147,10 @@ void testSingleByteCharSet(SingleByteCharSet const & rSet) {
                 = rtl_createTextToUnicodeConverter(rSet.m_nEncoding);
             CPPUNIT_ASSERT_MESSAGE(OUStringToOString(OUString("rtl_createTextToUnicodeConverter(" + OUString::createFromAscii(rtl_getMimeCharsetFromTextEncoding(rSet.m_nEncoding)) + ") failed"),
                                                      RTL_TEXTENCODING_UTF8).getStr(),
-                               aConverter != NULL);
+                               aConverter != nullptr);
             rtl_TextToUnicodeContext aContext
                 = rtl_createTextToUnicodeContext(aConverter);
-            CPPUNIT_ASSERT_MESSAGE("rtl_createTextToUnicodeContext failed", aContext != NULL);
+            CPPUNIT_ASSERT_MESSAGE("rtl_createTextToUnicodeContext failed", aContext != nullptr);
             sal_Size nSize;
             sal_uInt32 nInfo;
             sal_Size nConverted;
@@ -195,10 +195,10 @@ void doComplexCharSetTest(ComplexCharSetTest const & rTest) {
             = rtl_createTextToUnicodeConverter(rTest.m_nEncoding);
         CPPUNIT_ASSERT_MESSAGE(OUStringToOString(OUString("rtl_createTextToUnicodeConverter(" + OUString::createFromAscii(rtl_getMimeCharsetFromTextEncoding(rTest.m_nEncoding)) + ") failed"),
                                                  RTL_TEXTENCODING_UTF8).getStr(),
-                               aConverter != NULL);
+                               aConverter != nullptr);
         rtl_TextToUnicodeContext aContext
             = rtl_createTextToUnicodeContext(aConverter);
-        CPPUNIT_ASSERT_MESSAGE("rtl_createTextToUnicodeContext failed", aContext != NULL);
+        CPPUNIT_ASSERT_MESSAGE("rtl_createTextToUnicodeContext failed", aContext != nullptr);
         sal_Size nSize;
         sal_uInt32 nInfo;
         sal_Size nConverted;
@@ -235,10 +235,10 @@ void doComplexCharSetTest(ComplexCharSetTest const & rTest) {
             = rtl_createTextToUnicodeConverter(rTest.m_nEncoding);
         CPPUNIT_ASSERT_MESSAGE(OUStringToOString(OUString("rtl_createTextToUnicodeConverter(" + OUString::createFromAscii(rtl_getMimeCharsetFromTextEncoding(rTest.m_nEncoding)) + ") failed"),
                                                  RTL_TEXTENCODING_UTF8).getStr(),
-                               aConverter != NULL);
+                               aConverter != nullptr);
         rtl_TextToUnicodeContext aContext
             = rtl_createTextToUnicodeContext(aConverter);
-        CPPUNIT_ASSERT_MESSAGE("rtl_createTextToUnicodeContext failed", aContext != NULL);
+        CPPUNIT_ASSERT_MESSAGE("rtl_createTextToUnicodeContext failed", aContext != nullptr);
         if (aContext != reinterpret_cast<rtl_TextToUnicodeContext>(1)) {
             sal_Size nInput = 0;
             sal_Size nOutput = 0;
@@ -289,7 +289,7 @@ void doComplexCharSetTest(ComplexCharSetTest const & rTest) {
             = rtl_createTextToUnicodeConverter(rTest.m_nEncoding);
         CPPUNIT_ASSERT_MESSAGE(OUStringToOString(OUString("rtl_createTextToUnicodeConverter(" + OUString::createFromAscii(rtl_getMimeCharsetFromTextEncoding(rTest.m_nEncoding)) + ") failed"),
                                                  RTL_TEXTENCODING_UTF8).getStr(),
-                               aConverter != NULL);
+                               aConverter != nullptr);
         for (sal_Size i = 0;;) {
             if (i == rTest.m_nTextSize) {
                 goto done;
@@ -299,7 +299,7 @@ void doComplexCharSetTest(ComplexCharSetTest const & rTest) {
             sal_uInt32 nInfo = 0;
             sal_Size nCvtBytes;
             sal_Size nChars = rtl_convertTextToUnicode(
-                aConverter, 0, &c1, 1, aUC, 2,
+                aConverter, nullptr, &c1, 1, aUC, 2,
                 (RTL_TEXTTOUNICODE_FLAGS_UNDEFINED_ERROR
                  | RTL_TEXTTOUNICODE_FLAGS_MBUNDEFINED_ERROR
                  | RTL_TEXTTOUNICODE_FLAGS_INVALID_ERROR
@@ -319,7 +319,7 @@ void doComplexCharSetTest(ComplexCharSetTest const & rTest) {
                     c1 = rTest.m_pText[i++];
                     sBuffer[nLen++] = c1;
                     nChars = rtl_convertTextToUnicode(
-                        aConverter, 0, sBuffer, nLen, aUC, 2,
+                        aConverter, nullptr, sBuffer, nLen, aUC, 2,
                         (RTL_TEXTTOUNICODE_FLAGS_UNDEFINED_ERROR
                          | RTL_TEXTTOUNICODE_FLAGS_MBUNDEFINED_ERROR
                          | RTL_TEXTTOUNICODE_FLAGS_INVALID_ERROR
@@ -370,10 +370,10 @@ void doComplexCharSetTest(ComplexCharSetTest const & rTest) {
             = rtl_createUnicodeToTextConverter(rTest.m_nEncoding);
         CPPUNIT_ASSERT_MESSAGE(OUStringToOString(OUString("rtl_createTextToUnicodeConverter(" + OUString::createFromAscii(rtl_getMimeCharsetFromTextEncoding(rTest.m_nEncoding)) + ") failed"),
                                                  RTL_TEXTENCODING_UTF8).getStr(),
-                               aConverter != NULL);
+                               aConverter != nullptr);
         rtl_UnicodeToTextContext aContext
             = rtl_createUnicodeToTextContext(aConverter);
-        CPPUNIT_ASSERT_MESSAGE("rtl_createTextToUnicodeContext failed", aContext != NULL);
+        CPPUNIT_ASSERT_MESSAGE("rtl_createTextToUnicodeContext failed", aContext != nullptr);
         sal_Size nSize;
         sal_uInt32 nInfo;
         sal_Size nConverted;
@@ -413,12 +413,12 @@ void doComplexCharSetCutTest(ComplexCharSetTest const & rTest) {
             = rtl_createTextToUnicodeConverter(rTest.m_nEncoding);
         CPPUNIT_ASSERT_MESSAGE(OUStringToOString(OUString("rtl_createTextToUnicodeConverter(" + OUString::createFromAscii(rtl_getMimeCharsetFromTextEncoding(rTest.m_nEncoding)) + ") failed"),
                                                  RTL_TEXTENCODING_UTF8).getStr(),
-                               aConverter != NULL);
+                               aConverter != nullptr);
         sal_Size nSize;
         sal_uInt32 nInfo;
         sal_Size nConverted;
         nSize = rtl_convertTextToUnicode(
-            aConverter, 0, reinterpret_cast< sal_Char const * >(rTest.m_pText),
+            aConverter, nullptr, reinterpret_cast< sal_Char const * >(rTest.m_pText),
             rTest.m_nTextSize, aUnicode, TEST_STRING_SIZE,
             (RTL_TEXTTOUNICODE_FLAGS_UNDEFINED_ERROR
              | RTL_TEXTTOUNICODE_FLAGS_MBUNDEFINED_ERROR
@@ -2668,9 +2668,9 @@ void Test::testSRCBUFFERTOSMALL() {
     rtl_TextToUnicodeConverter cv = rtl_createTextToUnicodeConverter(
         RTL_TEXTENCODING_EUC_JP);
     CPPUNIT_ASSERT_MESSAGE("rtl_createTextToUnicodeConverter(EUC-JP) failed",
-                           cv != NULL);
+                           cv != nullptr);
     rtl_TextToUnicodeContext cx = rtl_createTextToUnicodeContext(cv);
-    CPPUNIT_ASSERT_MESSAGE("rtl_createTextToUnicodeContext failed", cx != NULL);
+    CPPUNIT_ASSERT_MESSAGE("rtl_createTextToUnicodeContext failed", cx != nullptr);
     char src = '\xA1';
     sal_Unicode dst[10];
     sal_uInt32 info;
@@ -2774,7 +2774,7 @@ void Test::testMime() {
         { "KSC_5601", RTL_TEXTENCODING_MS_949, false },
         { "korean", RTL_TEXTENCODING_MS_949, false },
         { "csKSC56011987", RTL_TEXTENCODING_MS_949, false },
-        { 0, RTL_TEXTENCODING_MS_949, true },
+        { nullptr, RTL_TEXTENCODING_MS_949, true },
 
         { "Adobe-Standard-Encoding", RTL_TEXTENCODING_ADOBE_STANDARD, false },
         { "csAdobeStandardEncoding", RTL_TEXTENCODING_ADOBE_STANDARD, false },
@@ -2788,10 +2788,10 @@ void Test::testMime() {
         { "Cyrillic-Asian", RTL_TEXTENCODING_PT154, false }
     };
     for (std::size_t i = 0; i < SAL_N_ELEMENTS(data); ++i) {
-        if (data[i].mime == 0) {
+        if (data[i].mime == nullptr) {
             OSL_ASSERT(data[i].reverse);
             CPPUNIT_ASSERT_EQUAL(
-                static_cast< char const * >(0),
+                static_cast< char const * >(nullptr),
                 rtl_getMimeCharsetFromTextEncoding(data[i].encoding));
         } else {
             CPPUNIT_ASSERT_EQUAL(
diff --git a/sal/qa/rtl/uri/rtl_testuri.cxx b/sal/qa/rtl/uri/rtl_testuri.cxx
index 191bf5dc2b53..00e8dd56b7db 100644
--- a/sal/qa/rtl/uri/rtl_testuri.cxx
+++ b/sal/qa/rtl/uri/rtl_testuri.cxx
@@ -323,7 +323,7 @@ void Test::test_Uri() {
             { "http://a/b/c/d;p?q", "http:g", "http:g" },
 
             { "http!://a/b/c/d;p?q", "g:h", "g:h" },
-            { "http!://a/b/c/d;p?q", "g", 0 },
+            { "http!://a/b/c/d;p?q", "g", nullptr },
             { "http:b/c/d;p?q", "g:h", "g:h" },
             { "http:b/c/d;p?q", "g", "http:b/c/g" },
             { "http://a/b/../", "../c", "http://a/c" },
@@ -347,8 +347,8 @@ void Test::test_Uri() {
             bMalformed = true;
         }
         if (bMalformed
-            ? aRelToAbsTest[i].pAbs != 0
-            : (aRelToAbsTest[i].pAbs == 0
+            ? aRelToAbsTest[i].pAbs != nullptr
+            : (aRelToAbsTest[i].pAbs == nullptr
                || !aAbs.equalsAscii(aRelToAbsTest[i].pAbs)))
         {
             printf(
@@ -358,7 +358,7 @@ void Test::test_Uri() {
                  ? "<MALFORMED>"
                  : rtl::OUStringToOString(
                      aAbs, RTL_TEXTENCODING_UTF8).getStr()),
-                (aRelToAbsTest[i].pAbs == 0
+                (aRelToAbsTest[i].pAbs == nullptr
                  ? "<MALFORMED>" : aRelToAbsTest[i].pAbs));
             CPPUNIT_ASSERT(false);
         }
diff --git a/sal/qa/rtl/uuid/rtl_Uuid.cxx b/sal/qa/rtl/uuid/rtl_Uuid.cxx
index f568d03702c2..ba20eadec53d 100644
--- a/sal/qa/rtl/uuid/rtl_Uuid.cxx
+++ b/sal/qa/rtl/uuid/rtl_Uuid.cxx
@@ -60,7 +60,7 @@ public:
     sal_Int32 i,i2;
     for( i = 0 ; i < TEST_UUID ; i ++ )
     {
-        rtl_createUuid( aNode[i], 0, sal_False );
+        rtl_createUuid( aNode[i], nullptr, sal_False );
     }
     bool bRes = true;
     for( i = 0 ; i < TEST_UUID ; i ++ )
@@ -137,7 +137,7 @@ public:
         sal_uInt8 pNamedUUID[16], pNamedUUID2[16];
 
         // Same name does generate the same uuid
-        rtl_String *pName = 0;
+        rtl_String *pName = nullptr;
         rtl_string_newFromStr( &pName , "this is a bla.blubs.DNS-Name" );
         rtl_createNamedUuid( pNamedUUID , NameSpace_DNS , pName );
         rtl_createNamedUuid( pNamedUUID2 , NameSpace_DNS , pName );