More nullptr usage in headers

Diff generated by running clang-tidy's modernize-use-nullptr checker on
the CMake-based Qt version.

Skipping src/3rdparty, examples/, tests/

Change-Id: Ib182074e2e2fd52f63093f73b3e2e4c0cb7af188
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>

5 files changed, 12 insertions, 12 deletions

diff --git a/src/corelib/thread/qatomic_bootstrap.h b/src/corelib/thread/qatomic_bootstrap.h
index b463f817bd..27a67fb2ee 100644
--- a/src/corelib/thread/qatomic_bootstrap.h
+++ b/src/corelib/thread/qatomic_bootstrap.h
@@ -65,7 +65,7 @@ template <typename T> struct QAtomicOps: QGenericAtomicOps<QAtomicOps<T> >
         return --_q_value != 0;
     }
 
-    static bool testAndSetRelaxed(T &_q_value, T expectedValue, T newValue, T *currentValue = 0) Q_DECL_NOTHROW
+    static bool testAndSetRelaxed(T &_q_value, T expectedValue, T newValue, T *currentValue = nullptr) Q_DECL_NOTHROW
     {
         if (currentValue)
             *currentValue = _q_value;
diff --git a/src/corelib/thread/qresultstore.h b/src/corelib/thread/qresultstore.h
index 1f29e8d187..7a65089396 100644
--- a/src/corelib/thread/qresultstore.h
+++ b/src/corelib/thread/qresultstore.h
@@ -142,7 +142,7 @@ public:
     template <typename T>
     int addResult(int index, const T *result)
     {
-        if (result == 0)
+        if (result == nullptr)
             return addResult(index, static_cast<void *>(nullptr));
         else
             return addResult(index, static_cast<void *>(new T(*result)));
@@ -158,7 +158,7 @@ public:
     int addResults(int index, const QVector<T> *results, int totalCount)
     {
         if (m_filterMode == true && results->count() != totalCount && 0 == results->count())
-            return addResults(index, 0, 0, totalCount);
+            return addResults(index, nullptr, 0, totalCount);
         else
             return addResults(index, new QVector<T>(*results), results->count(), totalCount);
     }
diff --git a/src/corelib/thread/qthread_p.h b/src/corelib/thread/qthread_p.h
index 7d9442ab79..e614ddd004 100644
--- a/src/corelib/thread/qthread_p.h
+++ b/src/corelib/thread/qthread_p.h
@@ -89,7 +89,7 @@ public:
     QEvent *event;
     int priority;
     inline QPostEvent()
-        : receiver(0), event(0), priority(0)
+        : receiver(nullptr), event(nullptr), priority(0)
     { }
     inline QPostEvent(QObject *r, QEvent *e, int p)
         : receiver(r), event(e), priority(p)
@@ -148,7 +148,7 @@ private:
 class Q_CORE_EXPORT QDaemonThread : public QThread
 {
 public:
-    QDaemonThread(QObject *parent = 0);
+    QDaemonThread(QObject *parent = nullptr);
     ~QDaemonThread();
 };
 
@@ -157,7 +157,7 @@ class QThreadPrivate : public QObjectPrivate
     Q_DECLARE_PUBLIC(QThread)
 
 public:
-    QThreadPrivate(QThreadData *d = 0);
+    QThreadPrivate(QThreadData *d = nullptr);
     ~QThreadPrivate();
 
     void setPriority(QThread::Priority prio);
@@ -248,7 +248,7 @@ public:
 #endif
     static void clearCurrentThreadData();
     static QThreadData *get2(QThread *thread)
-    { Q_ASSERT_X(thread != 0, "QThread", "internal error"); return thread->d_func()->data; }
+    { Q_ASSERT_X(thread != nullptr, "QThread", "internal error"); return thread->d_func()->data; }
 
 
     void ref();
@@ -281,7 +281,7 @@ public:
 
     public:
         FlaggedDebugSignatures() : idx(0)
-        { std::fill_n(locations, Count, static_cast<char*>(0)); }
+        { std::fill_n(locations, Count, static_cast<char*>(nullptr)); }
 
         void store(const char* method)
         { locations[idx++ % Count] = method; }
@@ -328,7 +328,7 @@ class QAdoptedThread : public QThread
     Q_DECLARE_PRIVATE(QThread)
 
 public:
-    QAdoptedThread(QThreadData *data = 0);
+    QAdoptedThread(QThreadData *data = nullptr);
     ~QAdoptedThread();
     void init();
 
diff --git a/src/corelib/thread/qthreadpool_p.h b/src/corelib/thread/qthreadpool_p.h
index 952e02ef20..01852d8366 100644
--- a/src/corelib/thread/qthreadpool_p.h
+++ b/src/corelib/thread/qthreadpool_p.h
@@ -162,7 +162,7 @@ public:
     void tryToStartMoreThreads();
     bool tooManyThreadsActive() const;
 
-    void startThread(QRunnable *runnable = 0);
+    void startThread(QRunnable *runnable = nullptr);
     void reset();
     bool waitForDone(int msecs);
     bool waitForDone(const QDeadlineTimer &timer);
diff --git a/src/corelib/thread/qthreadstorage.h b/src/corelib/thread/qthreadstorage.h
index 55fc482da3..9eb8672e92 100644
--- a/src/corelib/thread/qthreadstorage.h
+++ b/src/corelib/thread/qthreadstorage.h
@@ -69,7 +69,7 @@ inline
 T *&qThreadStorage_localData(QThreadStorageData &d, T **)
 {
     void **v = d.get();
-    if (!v) v = d.set(0);
+    if (!v) v = d.set(nullptr);
     return *(reinterpret_cast<T**>(v));
 }
 
@@ -139,7 +139,7 @@ public:
     inline ~QThreadStorage() { }
 
     inline bool hasLocalData() const
-    { return d.get() != 0; }
+    { return d.get() != nullptr; }
 
     inline T& localData()
     { return qThreadStorage_localData(d, reinterpret_cast<T*>(0)); }