2 files changed, 2 insertions, 2 deletions
diff --git a/qmake/library/proitems.cpp b/qmake/library/proitems.cpp
index 85569ecd82..db19794bec 100644
--- a/qmake/library/proitems.cpp
+++ b/qmake/library/proitems.cpp
@@ -156,7 +156,8 @@ QString ProString::toQString() const
 
 QString &ProString::toQString(QString &tmp) const
 {
-    return tmp.setRawData(m_string.constData() + m_offset, m_length);
+    tmp = m_string.mid(m_offset, m_length);
+    return tmp;
 }
 
 /*
diff --git a/qmake/library/proitems.h b/qmake/library/proitems.h
index 6e091354e4..bef93795d2 100644
--- a/qmake/library/proitems.h
+++ b/qmake/library/proitems.h
@@ -270,7 +270,6 @@ class ProStringRoUser
 public:
     ProStringRoUser(QString &rs)
     {
-        Q_ASSERT(rs.isDetached() || rs.isEmpty());
         m_rs = &rs;
     }
     ProStringRoUser(const ProString &ps, QString &rs)