Merge from trunk:

* Fix stream related issues with libc++ and clang (fixes #7704, fixes #8267)
* Change runtime assert to compile time when converting to pointer (fixes #8267)

[SVN r83689]

test/Jamfile.v2

@@ -55,5 +55,7 @@ test-suite conversion
     [ run lexical_cast_integral_types_test.cpp ]
     [ run lexical_cast_stream_detection_test.cpp ]
     [ run lexical_cast_stream_traits_test.cpp ]
+    [ compile-fail lexical_cast_to_pointer_test.cpp ]
+    [ run lexical_cast_filesystem_test.cpp ../../filesystem/build//boost_filesystem/<link>static ]
   ;
 

test/lexical_cast_filesystem_test.cpp

@@ -0,0 +1,46 @@
+//  Unit test for boost::lexical_cast.
+//
+//  See http://www.boost.org for most recent version, including documentation.
+//
+//  Copyright Antony Polukhin, 2013.
+//
+//  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).
+//
+// Test lexical_cast usage with long filesystem::path. Bug 7704.
+
+#include <boost/config.hpp>
+
+#include <boost/test/unit_test.hpp>
+#include <boost/lexical_cast.hpp>
+#include <boost/filesystem/path.hpp>
+
+using namespace boost;
+
+void test_filesystem();
+
+unit_test::test_suite *init_unit_test_suite(int, char *[])
+{
+    unit_test::test_suite *suite =
+        BOOST_TEST_SUITE("lexical_cast unit test");
+    suite->add(BOOST_TEST_CASE(&test_filesystem));
+
+    return suite;
+}
+
+void test_filesystem()
+{
+    boost::filesystem::path p;
+    std::string s1 = "aaaaaaaaaaaaaaaaaaaaaaa";
+    p = boost::lexical_cast<boost::filesystem::path>(s1);
+    BOOST_CHECK(!p.empty());
+    BOOST_CHECK_EQUAL(p, s1);
+    p.clear();
+
+    const char ab[] = "aaaaaaaaaaaaaaaaaaaaaaabbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb";
+    p = boost::lexical_cast<boost::filesystem::path>(ab);
+    BOOST_CHECK(!p.empty());
+    BOOST_CHECK_EQUAL(p, ab);
+}
+

test/lexical_cast_to_pointer_test.cpp

@@ -0,0 +1,21 @@
+//  //  Unit test for boost::lexical_cast.
+//
+//  See http://www.boost.org for most recent version, including documentation.
+//
+//  Copyright Antony Polukhin, 2013.
+//
+//  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).
+
+#include <boost/lexical_cast.hpp>
+#include <boost/type.hpp>
+
+#define BOOST_INCLUDE_MAIN
+#include <boost/test/test_tools.hpp>
+
+int test_main(int, char*[])
+{
+    boost::lexical_cast<char*>("Hello");
+    return 0;
+}