SCM_CLASS_READ_ERROR  408 src/error.c            SCM_READ_ERROR(readerror_allocate(SCM_CLASS_READ_ERROR, SCM_NIL));
SCM_CLASS_READ_ERROR  915 src/error.c        Scm_InitStaticClassWithMeta(SCM_CLASS_READ_ERROR,
SCM_CLASS_READ_ERROR  141 src/gauche/exception.h #define SCM_READ_ERROR_P(obj)    SCM_ISA(obj, SCM_CLASS_READ_ERROR)