SCM_SERIOUS_CONDITION_P  332 src/error.c            if (SCM_SERIOUS_CONDITION_P(c)) {
SCM_SERIOUS_CONDITION_P 3288 src/vm.c               if (SCM_SERIOUS_CONDITION_P(exception)) {
SCM_SERIOUS_CONDITION_P 3297 src/vm.c           } else if (!SCM_SERIOUS_CONDITION_P(exception)) {