diff --git a/src/corelib/tools/qbytearray.h b/src/corelib/tools/qbytearray.h
index 45be63aa9b..0f5ebcfb18 100644
--- a/src/corelib/tools/qbytearray.h
+++ b/src/corelib/tools/qbytearray.h
@@ -169,13 +169,14 @@ struct QByteArrayDataPtr
 #if defined(Q_COMPILER_LAMBDA)
 
 #  define QByteArrayLiteral(str) \
-    ([]() -> QByteArrayDataPtr { \
+    ([]() -> QByteArray { \
         enum { Size = sizeof(str) - 1 }; \
         static const QStaticByteArrayData<Size> qbytearray_literal = { \
             Q_STATIC_BYTE_ARRAY_DATA_HEADER_INITIALIZER(Size), \
             str }; \
         QByteArrayDataPtr holder = { qbytearray_literal.data_ptr() }; \
-        return holder; \
+        const QByteArray ba(holder); \
+        return ba; \
     }()) \
     /**/
 
@@ -185,22 +186,22 @@ struct QByteArrayDataPtr
 // To do that, we need the __extension__ {( )} trick which only GCC supports
 
 #  define QByteArrayLiteral(str) \
-    __extension__ ({ \
+    QByteArray(__extension__ ({ \
         enum { Size = sizeof(str) - 1 }; \
         static const QStaticByteArrayData<Size> qbytearray_literal = { \
             Q_STATIC_BYTE_ARRAY_DATA_HEADER_INITIALIZER(Size), \
             str }; \
         QByteArrayDataPtr holder = { qbytearray_literal.data_ptr() }; \
         holder; \
-    }) \
+    })) \
     /**/
 
 #endif
 
 #ifndef QByteArrayLiteral
-// no lambdas, not GCC, use const char * instead
+// no lambdas, not GCC, just return a temporary QByteArray
 
-# define QByteArrayLiteral(str) (str)
+# define QByteArrayLiteral(str) QByteArray(str, sizeof(str) - 1)
 #endif
 
 class Q_CORE_EXPORT QByteArray
diff --git a/src/corelib/tools/qstring.h b/src/corelib/tools/qstring.h
index edb140b682..a96046d837 100644
--- a/src/corelib/tools/qstring.h
+++ b/src/corelib/tools/qstring.h
@@ -113,13 +113,14 @@ Q_STATIC_ASSERT_X(sizeof(qunicodechar) == 2,
 # if defined(Q_COMPILER_LAMBDA)
 
 #  define QStringLiteral(str) \
-    ([]() -> QStringDataPtr { \
+    ([]() -> QString { \
         enum { Size = sizeof(QT_UNICODE_LITERAL(str))/2 - 1 }; \
         static const QStaticStringData<Size> qstring_literal = { \
             Q_STATIC_STRING_DATA_HEADER_INITIALIZER(Size), \
             QT_UNICODE_LITERAL(str) }; \
         QStringDataPtr holder = { qstring_literal.data_ptr() }; \
-        return holder; \
+        const QString s(holder); \
+        return s; \
     }()) \
     /**/
 
@@ -129,14 +130,14 @@ Q_STATIC_ASSERT_X(sizeof(qunicodechar) == 2,
 // To do that, we need the __extension__ {( )} trick which only GCC supports
 
 #  define QStringLiteral(str) \
-    __extension__ ({ \
+    QString(__extension__ ({ \
         enum { Size = sizeof(QT_UNICODE_LITERAL(str))/2 - 1 }; \
         static const QStaticStringData<Size> qstring_literal = { \
             Q_STATIC_STRING_DATA_HEADER_INITIALIZER(Size), \
             QT_UNICODE_LITERAL(str) }; \
         QStringDataPtr holder = { qstring_literal.data_ptr() }; \
         holder; \
-    }) \
+    })) \
     /**/
 
 # endif
@@ -144,9 +145,10 @@ Q_STATIC_ASSERT_X(sizeof(qunicodechar) == 2,
 
 #ifndef QStringLiteral
 // no lambdas, not GCC, or GCC in C++98 mode with 4-byte wchar_t
-// fallback, uses QLatin1String as next best options
+// fallback, return a temporary QString
+// source code is assumed to be encoded in UTF-8
 
-# define QStringLiteral(str) QLatin1String(str)
+# define QStringLiteral(str) QString::fromUtf8(str, sizeof(str) - 1)
 #endif
 
 #define Q_STATIC_STRING_DATA_HEADER_INITIALIZER_WITH_OFFSET(size, offset) \
diff --git a/src/corelib/tools/qstringbuilder.h b/src/corelib/tools/qstringbuilder.h
index 9a1fd6949b..9b1cd1ee7e 100644
--- a/src/corelib/tools/qstringbuilder.h
+++ b/src/corelib/tools/qstringbuilder.h
@@ -253,19 +253,6 @@ template <> struct QConcatenable<QString> : private QAbstractConcatenable
     }
 };
 
-template <> struct QConcatenable<QStringDataPtr> : private QAbstractConcatenable
-{
-    typedef QStringDataPtr type;
-    typedef QString ConvertTo;
-    enum { ExactSize = true };
-    static int size(const type &a) { return a.ptr->size; }
-    static inline void appendTo(const type &a, QChar *&out)
-    {
-        memcpy(out, reinterpret_cast<const char*>(a.ptr->data()), sizeof(QChar) * a.ptr->size);
-        out += a.ptr->size;
-    }
-};
-
 template <> struct QConcatenable<QStringRef> : private QAbstractConcatenable
 {
     typedef QStringRef type;
@@ -358,24 +345,6 @@ template <> struct QConcatenable<QByteArray> : private QAbstractConcatenable
     }
 };
 
-template <> struct QConcatenable<QByteArrayDataPtr> : private QAbstractConcatenable
-{
-    typedef QByteArrayDataPtr type;
-    typedef QByteArray ConvertTo;
-    enum { ExactSize = false };
-    static int size(const type &ba) { return ba.ptr->size; }
-#ifndef QT_NO_CAST_FROM_ASCII
-    static inline QT_ASCII_CAST_WARN void appendTo(const type &a, QChar *&out)
-    {
-        QAbstractConcatenable::convertFromAscii(a.ptr->data(), a.ptr->size, out);
-    }
-#endif
-    static inline void appendTo(const type &ba, char *&out)
-    {
-        ::memcpy(out, ba.ptr->data(), ba.ptr->size);
-        out += ba.ptr->size;
-    }
-};
 
 template <typename A, typename B>
 struct QConcatenable< QStringBuilder<A, B> >
diff --git a/tests/auto/corelib/tools/qstringbuilder/qstringbuilder1/stringbuilder.cpp b/tests/auto/corelib/tools/qstringbuilder/qstringbuilder1/stringbuilder.cpp
index 862789cc73..556b9ac16a 100644
--- a/tests/auto/corelib/tools/qstringbuilder/qstringbuilder1/stringbuilder.cpp
+++ b/tests/auto/corelib/tools/qstringbuilder/qstringbuilder1/stringbuilder.cpp
@@ -107,21 +107,6 @@ void runScenario()
     QCOMPARE(r, r3);
 #endif
 
-    {
-        static const QStaticStringData<12> literalData = {
-                Q_STATIC_STRING_DATA_HEADER_INITIALIZER(12),
-                { 's', 'o', 'm', 'e', ' ', 'l', 'i', 't', 'e', 'r', 'a', 'l' }
-            };
-        static QStringDataPtr literal = { literalData.data_ptr() };
-
-        r = literal;
-        QCOMPARE(r, string);
-        r = r Q literal;
-        QCOMPARE(r, r2);
-        r = literal Q literal;
-        QCOMPARE(r, r2);
-    }
-
 #ifndef QT_NO_CAST_FROM_ASCII
     r = string P LITERAL;
     QCOMPARE(r, r2);
@@ -226,21 +211,6 @@ void runScenario()
         QCOMPARE(r, ba);
     }
 
-    {
-        static const QStaticByteArrayData<12> literalData = {
-                Q_STATIC_BYTE_ARRAY_DATA_HEADER_INITIALIZER(12),
-                { 's', 'o', 'm', 'e', ' ', 'l', 'i', 't', 'e', 'r', 'a', 'l' }
-            };
-        static QByteArrayDataPtr literal = { literalData.data_ptr() };
-
-        QByteArray ba = literal;
-        QCOMPARE(ba, QByteArray(LITERAL));
-        ba = ba Q literal;
-        QCOMPARE(ba, QByteArray(LITERAL LITERAL));
-        ba = literal Q literal;
-        QCOMPARE(ba, QByteArray(LITERAL LITERAL));
-    }
-
     //operator QString  +=
     {
         QString str = QString::fromUtf8(UTF8_LITERAL);