diff -r 5dc02b23752f -r 3e2da88830cd src/corelib/tools/qbytearray.cpp
--- a/src/corelib/tools/qbytearray.cpp	Tue Jul 06 15:10:48 2010 +0300
+++ b/src/corelib/tools/qbytearray.cpp	Wed Aug 18 10:37:55 2010 +0300
@@ -1805,6 +1805,11 @@
 /*! \fn QByteArray &QByteArray::replace(int pos, int len, const char *after)
 
     \overload
+
+    Replaces \a len bytes from index position \a pos with the zero terminated
+    string \a after.
+
+    Notice: this can change the lenght of the byte array.
 */
 QByteArray &QByteArray::replace(int pos, int len, const char *after)
 {
@@ -2147,18 +2152,18 @@
     if (result.d->alloc != resultSize)
         return QByteArray(); // not enough memory
 
-    qMemCopy(result.d->data, d->data, d->size);
+    memcpy(result.d->data, d->data, d->size);
 
     int sizeSoFar = d->size;
     char *end = result.d->data + sizeSoFar;
 
     const int halfResultSize = resultSize >> 1;
     while (sizeSoFar <= halfResultSize) {
-        qMemCopy(end, result.d->data, sizeSoFar);
+        memcpy(end, result.d->data, sizeSoFar);
         end += sizeSoFar;
         sizeSoFar <<= 1;
     }
-    qMemCopy(end, result.d->data, resultSize - sizeSoFar);
+    memcpy(end, result.d->data, resultSize - sizeSoFar);
     result.d->data[resultSize] = '\0';
     result.d->size = resultSize;
     return result;