condition_type    691 src/error.c    ScmObj Scm_RaiseCondition(ScmObj condition_type, ...)
condition_type    697 src/error.c        if (!SCM_CLASSP(condition_type)
condition_type    698 src/error.c            || !Scm_SubtypeP(SCM_CLASS(condition_type), SCM_CLASS_CONDITION)) {
condition_type    700 src/error.c            condition_type = SCM_OBJ(SCM_CLASS_ERROR);
condition_type    702 src/error.c        SCM_APPEND1(argh, argt, condition_type);
condition_type    703 src/error.c        va_start(ap, condition_type);