In reviewing the "[assert] static_assert envy" thread, I agreed with Steven Watanabe:
MHO, the last thing we need is lots of minor variations that don't add any real utility.
KISS was also a factor, as I wanted to add only features that I would personally use right away, or that were needed for BOOST_ASSERT compatibility. It boiled down to the following: [assert] * Added BOOST_ASSERT_MSG(expr, msg) macro. If expr is false, outputs msg, then calls std::abort(). BOOST_DISABLE_ASSERTS behaves the same as in BOOST_ASSERT. BOOST_ENABLE_ASSERT_MSG_HANDLER enables a separate error handler. BOOST_ASSERT_MSG_OSTREAM defaults to std::cerr. User may define to specify a different output stream. * Added BOOST_ASSERT_MSG test cases to libs/utility/assert_test.cpp * Added BOOST_ASSERT_MSG docs to libs/utility/assert_test.cpp <boost/detail/lightweight_test.hpp> has the same Visual Studio output interleaving problem, so it makes sense to apply a similar fix at the same time. * Messages are now sent do BOOST_LIGHTWEIGHT_TEST_OSTREAM * BOOST_LIGHTWEIGHT_TEST_OSTREAM defaults to std::cerr. User may define to specify the output stream for messages. Updated files: http://mysite.verizon.net/beman/assert.hpp http://mysite.verizon.net/beman/assert.html http://mysite.verizon.net/beman/assert_test.cpp http://mysite.verizon.net/beman/lightweight_test.hpp Let's do a quick review before these get committed to trunk. Say until Monday morning. (They won't go in 1.46.0; far too late for that.) Comments welcome! --Beman