Index: src/tools/qvaluevector.h
===================================================================
--- src/tools/qvaluevector.h.orig	2008-01-15 20:09:13.000000000 +0100
+++ src/tools/qvaluevector.h	2011-03-31 20:15:15.904712567 +0200
@@ -246,7 +246,7 @@ public:
     typedef const value_type& const_reference;
     typedef size_t size_type;
 #ifndef TQT_NO_STL
-    typedef ptrdiff_t difference_type;
+    typedef std::ptrdiff_t difference_type;
 #else
     typedef int difference_type;
 #endif
Index: src/tools/qmap.h
===================================================================
--- src/tools/qmap.h.orig	2008-01-15 20:09:13.000000000 +0100
+++ src/tools/qmap.h	2011-03-31 20:24:35.802101605 +0200
@@ -108,7 +108,7 @@ class TQMapIterator
 #endif
     typedef T          value_type;
 #ifndef TQT_NO_STL
-    typedef ptrdiff_t  difference_type;
+    typedef std::ptrdiff_t  difference_type;
 #else
     typedef int difference_type;
 #endif
@@ -224,7 +224,7 @@ class TQMapConstIterator
 #endif
     typedef T          value_type;
 #ifndef TQT_NO_STL
-    typedef ptrdiff_t  difference_type;
+    typedef std::ptrdiff_t  difference_type;
 #else
     typedef int difference_type;
 #endif
@@ -605,7 +605,7 @@ public:
     typedef value_type& reference;
     typedef const value_type& const_reference;
 #ifndef TQT_NO_STL
-    typedef ptrdiff_t  difference_type;
+    typedef std::ptrdiff_t  difference_type;
 #else
     typedef int difference_type;
 #endif