[patch] STDCXX-170

[Farid Zaripov]

  Here is proposed patch to fix STDCXX-170 issue:
 
  ChangeLog:
  * string.cc (replace): Copy data to temporary string object
  if data is a part of the internal string buffer.
 
Index: string.cc
===================================================================
--- string.cc (revision 556830)
+++ string.cc (working copy)
@@ -516,6 +516,15 @@
     _RWSTD_ASSERT_RANGE (__first1, __last1);
     _RWSTD_ASSERT_RANGE (__first2, __last2);
 
+    if (   !(__first2 == __last2)
+        && __s._C_data <= &*__first2
+        && __s._C_data + __s.size () > &*__first2) {
+
+        // __first2 points to internal string buffer
+        return __s.replace (__first1, __last1,
+                            basic_string (__first2, __last2));
+    }
+
      // use a (probably) faster algorithm if possible
      if
(_STD::__is_bidirectional_iterator(_RWSTD_ITERATOR_CATEGORY(_InputIter,
 
__last2)))

 
Farid.