diff --git a/include/fc/exception/exception.hpp b/include/fc/exception/exception.hpp
index 081b17e..107939e 100644
--- a/include/fc/exception/exception.hpp
+++ b/include/fc/exception/exception.hpp
@@ -225,7 +225,7 @@ namespace fc
        :exception(c){} \
        TYPE( const exception& c ) \
        :exception(c){} \
-       TYPE():exception(){}\
+       TYPE():exception(CODE, BOOST_PP_STRINGIZE(TYPE), WHAT){}\
        \
        virtual std::shared_ptr<exception> dynamic_copy_exception()const\
        { return std::make_shared<TYPE>( *this ); } \
diff --git a/include/fc/time.hpp b/include/fc/time.hpp
index 595e7d7..7e3c426 100644
--- a/include/fc/time.hpp
+++ b/include/fc/time.hpp
@@ -83,6 +83,9 @@ namespace fc {
         time_point_sec( const time_point& t )
         :utc_seconds( t.time_since_epoch().count() / 1000000ll ){}
 
+        static time_point_sec maximum() { return time_point_sec(0xffffffff); }
+        static time_point_sec min() { return time_point_sec(0); }
+
         operator time_point()const { return time_point( fc::seconds( utc_seconds) ); }
         uint32_t sec_since_epoch()const { return utc_seconds; }