Add new algorithm 'gather'

[SVN r82584]

test/gather_fail1.cpp

@@ -0,0 +1,39 @@
+/* 
+   Copyright (c) Marshall Clow 2011-2012.
+
+   Distributed under the Boost Software License, Version 1.0. (See accompanying
+   file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+    For more information, see http://www.boost.org
+*/
+
+#include <iostream>
+
+#include <boost/config.hpp>
+#include <boost/algorithm/gather.hpp>
+#include <boost/test/included/test_exec_monitor.hpp>
+
+#include <string>
+#include <vector>
+#include <list>
+
+#include "iterator_test.hpp"
+
+namespace ba = boost::algorithm;
+
+bool is_ten  ( int i ) { return i == 10; }
+
+void test_sequence1 () {
+    std::vector<int> v;
+    typedef input_iterator<std::vector<int>::iterator> II;    
+
+//  This should fail to compile, since gather doesn't work with input iterators
+    (void) ba::gather ( II( v.begin ()), II( v.end ()), II( v.begin ()), is_even );
+    }
+
+
+int test_main( int , char* [] )
+{
+  test_sequence1 ();
+  return 0;
+}