SCM_CLASS_ERROR   391 src/error.c        ScmError *e = SCM_ERROR(message_allocate(SCM_CLASS_ERROR, SCM_NIL));
SCM_CLASS_ERROR   700 src/error.c            condition_type = SCM_OBJ(SCM_CLASS_ERROR);
SCM_CLASS_ERROR   907 src/error.c        Scm_InitStaticClassWithMeta(SCM_CLASS_ERROR,
SCM_CLASS_ERROR   112 src/gauche/exception.h #define SCM_ERRORP(obj)            SCM_ISA(obj, SCM_CLASS_ERROR)