Only return an 8 bit result from report_errors

include/boost/core/lightweight_test.hpp

@@ -379,18 +379,20 @@ inline int report_errors()
     result.done();
 
     int errors = result.errors();
+
     if( errors == 0 )
     {
         BOOST_LIGHTWEIGHT_TEST_OSTREAM
           << "No errors detected." << std::endl;
-        return 0;
     }
     else
     {
         BOOST_LIGHTWEIGHT_TEST_OSTREAM
           << errors << " error" << (errors == 1? "": "s") << " detected." << std::endl;
-        return 1;
     }
+
+    // `return report_errors();` from main only supports 8 bit exit codes
+    return errors < 256? errors: 255;
 }
 
 } // namespace boost

test/Jamfile.v2

@@ -75,7 +75,6 @@ run lightweight_test_gt_ge_test.cpp ;
 run lightweight_test_eq_nullptr.cpp ;
 run lightweight_test_test3.cpp ;
 run lightweight_test_test4.cpp ;
-run lightweight_test_test5.cpp ;
 
 run-fail lightweight_test_all_eq_test.cpp ;
 run-fail lightweight_test_all_with_fail.cpp ;
@@ -93,6 +92,7 @@ run-fail lightweight_test_fail8.cpp : : : <rtti>off : lightweight_test_fail8_no_
 run-fail lightweight_test_fail9.cpp ;
 run-fail lightweight_test_fail10.cpp ;
 run-fail lightweight_test_fail11.cpp ;
+run-fail lightweight_test_fail12.cpp ;
 run-fail lightweight_test_lt_fail.cpp ;
 run-fail lightweight_test_le_fail.cpp ;
 run-fail lightweight_test_gt_fail.cpp ;