I'm get a SIGEGV segmentation fault /only/ when trying to register a test manually. Everything works just fine if I use auto registration. All compiles and links in both cases are without error. I know almost nothing about using gdb, but I was able to see the segment violation message shown below. I'm running Boost 1.58.0; Windows 7.1 64-bit; MinGW 4.9.2 64-bit; Eclipse Luna; CDT 8.6.0 In my TestMain.cpp #define BOOST_TEST_ALTERNATIVE_INIT_API #define BOOST_TEST_NO_MAIN #include "boost/test/unit_test.hpp" extern void Operand_Default_Constructor_Test(); bool init_unit_test() { framework::master_test_suite().p_name.value = "DiGSE Master Test"; framework::master_test_suite().add(BOOST_TEST_CASE(&Operand_Default_Constructor_Test)); return true; } int main(int argc, char* argv[]) { return boost::unit_test::unit_test_main(&init_unit_test, argc, argv); } It compiles and links without error. However, executing it gives this SIGEGV fault: Program received signal SIGSEGV, Segmentation fault. 0x000000006b405a12 in boost::unit_test::framework::get (id=1, t=boost::unit_test::tut_suite) at ./boost/test/impl/framework.ipp:388 388 if( (res->p_type & t) == 0 ) The failing snippet is part of a test that would throw internal_error(), but the if test itself seems to fail. if( (res->p_type & t) == 0 ) throw internal_error( "Invalid test unit type" ); If the Operand_Default_Constructor_Test test is changed from void Operand_Default_Constructor_Test() to BOOST_AUTO_TEST_CASE(Operand_Default_Constructor_Test) and the contents of init_unit_test() are removed, it works just fine with automatic registration. And the automatic registration is certainly the easiest way; but I was holding out hope for being able to specify test ordering. Merrill Cornish