1 files changed, 13 insertions, 13 deletions

diff --git a/src/corelib/tools/qvector.h b/src/corelib/tools/qvector.h
index 07c66bc393..c00bd07a72 100644
--- a/src/corelib/tools/qvector.h
+++ b/src/corelib/tools/qvector.h
@@ -128,6 +128,7 @@ public:
     T &operator[](int i);
     const T &operator[](int i) const;
     void append(const T &t);
+    inline void append(const QVector<T> &l) { *this += l; }
     void prepend(const T &t);
     void insert(int i, const T &t);
     void insert(int i, int n, const T &t);
@@ -327,9 +328,11 @@ inline QVector<T>::QVector(const QVector<T> &v)
     } else {
         if (v.d->capacityReserved) {
             d = Data::allocate(v.d->alloc);
+            Q_CHECK_PTR(d);
             d->capacityReserved = true;
         } else {
             d = Data::allocate(v.d->size);
+            Q_CHECK_PTR(d);
         }
         if (d->alloc) {
             copyConstruct(v.d->begin(), v.d->end(), d->begin());
@@ -439,6 +442,7 @@ QVector<T>::QVector(int asize)
     Q_ASSERT_X(asize >= 0, "QVector::QVector", "Size must be greater than or equal to 0.");
     if (Q_LIKELY(asize > 0)) {
         d = Data::allocate(asize);
+        Q_CHECK_PTR(d);
         d->size = asize;
         defaultConstruct(d->begin(), d->end());
     } else {
@@ -452,6 +456,7 @@ QVector<T>::QVector(int asize, const T &t)
     Q_ASSERT_X(asize >= 0, "QVector::QVector", "Size must be greater than or equal to 0.");
     if (asize > 0) {
         d = Data::allocate(asize);
+        Q_CHECK_PTR(d);
         d->size = asize;
         T* i = d->end();
         while (i != d->begin())
@@ -467,6 +472,7 @@ QVector<T>::QVector(std::initializer_list<T> args)
 {
     if (args.size() > 0) {
         d = Data::allocate(args.size());
+        Q_CHECK_PTR(d);
         // std::initializer_list<T>::iterator is guaranteed to be
         // const T* ([support.initlist]/1), so can be memcpy'ed away from by copyConstruct
         copyConstruct(args.begin(), args.end(), d->begin());
@@ -707,13 +713,10 @@ bool QVector<T>::operator==(const QVector<T> &v) const
         return true;
     if (d->size != v.d->size)
         return false;
-    T* b = d->begin();
-    T* i = b + d->size;
-    T* j = v.d->end();
-    while (i != b)
-        if (!(*--i == *--j))
-            return false;
-    return true;
+    const T *vb = v.d->begin();
+    const T *b  = d->begin();
+    const T *e  = d->end();
+    return std::equal(b, e, vb);
 }
 
 template <typename T>
@@ -791,12 +794,9 @@ int QVector<T>::lastIndexOf(const T &t, int from) const
 template <typename T>
 bool QVector<T>::contains(const T &t) const
 {
-    T* b = d->begin();
-    T* i = d->end();
-    while (i != b)
-        if (*--i == t)
-            return true;
-    return false;
+    const T *b = d->begin();
+    const T *e = d->end();
+    return std::find(b, e, t) != e;
 }
 
 template <typename T>