diff --git a/src/corelib/tools/qarraydataops.h b/src/corelib/tools/qarraydataops.h
index b7c3bc1287..d0f83d2b6a 100644
--- a/src/corelib/tools/qarraydataops.h
+++ b/src/corelib/tools/qarraydataops.h
@@ -76,7 +76,8 @@ struct QPodArrayOps
         Q_ASSERT(b < e);
         Q_ASSERT(size_t(e - b) <= this->alloc - uint(this->size));
 
-        ::memcpy(this->end(), b, (e - b) * sizeof(T));
+        ::memcpy(static_cast<void *>(this->end()), static_cast<const void *>(b),
+                 (e - b) * sizeof(T));
         this->size += e - b;
     }
 
diff --git a/src/corelib/tools/qvarlengtharray.h b/src/corelib/tools/qvarlengtharray.h
index d99eebd4b9..58bb5e75c4 100644
--- a/src/corelib/tools/qvarlengtharray.h
+++ b/src/corelib/tools/qvarlengtharray.h
@@ -344,7 +344,7 @@ Q_OUTOFLINE_TEMPLATE void QVarLengthArray<T, Prealloc>::append(const T *abuf, in
         while (s < asize)
             new (ptr+(s++)) T(*abuf++);
     } else {
-        memcpy(&ptr[s], abuf, increment * sizeof(T));
+        memcpy(static_cast<void *>(&ptr[s]), static_cast<const void *>(abuf), increment * sizeof(T));
         s = asize;
     }
 }
@@ -392,7 +392,7 @@ Q_OUTOFLINE_TEMPLATE void QVarLengthArray<T, Prealloc>::realloc(int asize, int a
                 QT_RETHROW;
             }
         } else {
-            memcpy(ptr, oldPtr, copySize * sizeof(T));
+            memcpy(static_cast<void *>(ptr), static_cast<const void *>(oldPtr), copySize * sizeof(T));
         }
     }
     s = copySize;