Report more warnings while testing boost::lexical_cast. Some warnings suppressed

[SVN r85007]

test/Jamfile.v2

@@ -1,5 +1,5 @@
 # Copyright (C) 2001-2003 Douglas Gregor
-# Copyright (C) 2011-2012 Antony Polukhin
+# Copyright (C) 2011-2013 Antony Polukhin
 #
 # 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)
@@ -15,6 +15,11 @@ project
         <toolset>gcc-4.7:<cxxflags>-ftrapv
         <toolset>gcc-4.6:<cxxflags>-ftrapv
         <toolset>clang:<cxxflags>-ftrapv
+        # default to all warnings on:
+        <warnings>all
+        # set warnings as errors for those compilers we know we get warning free:
+        <toolset>gcc:<cxxflags>-Wextra
+        <toolset>gcc:<cxxflags>-Wno-uninitialized
     ;
 
 # Thanks to Steven Watanabe for helping with <nowchar> feature

test/implicit_cast_fail.cpp

@@ -19,6 +19,8 @@ struct foo
 int test_main(int, char*[])
 {
     foo x = implicit_cast<foo>("foobar");
-    (void)x;  // warning suppression.
+    (void)x;            // warning suppression.
+    BOOST_CHECK(false); // suppressing warning about ‘boost::unit_test::{anonymous}::unit_test_log’ defined but not used
     return 0;
 }
+

test/lexical_cast_to_pointer_test.cpp

@@ -17,5 +17,7 @@
 int test_main(int, char*[])
 {
     boost::lexical_cast<char*>("Hello");
+    BOOST_CHECK(false); // suppressing warning about ‘boost::unit_test::{anonymous}::unit_test_log’ defined but not used
     return 0;
 }
+