SCM_ERROR         391 src/error.c        ScmError *e = SCM_ERROR(message_allocate(SCM_CLASS_ERROR, SCM_NIL));
SCM_ERROR         616 src/error.c            SCM_ERROR(pe)->message = smsg;
SCM_ERROR         114 src/gauche/exception.h #define SCM_ERROR_MESSAGE(obj)     SCM_ERROR(obj)->message