SCM_ASSERT_TYPE

[Han-Wen Nienhuys]

The expansion of SCM_ASSERT_TYPE includes an if statement, which will
lead to unexpected effects for code like

     if (optional != SCM_UNDEFINED)
        SCM_ASSERT_TYPE(optional, ... );
     else
        optional = default_value;

I've fixed this by adding else to the macro, i.e.

        #define SCM_ASSERT_TYPE(_cond, _arg, _pos, _subr, _msg) \
                if (!(_cond)) \
                  scm_wrong_type_arg_msg(_subr, _pos, _arg, _msg); else

are there any other macros in GUILE that expand to if statements?



-- 

Han-Wen Nienhuys   |   address@hidden   |   http://www.xs4all.nl/~hanwen