Scm_IOReadErrorClass  150 src/error.c    SCM_DEFINE_BASE_CLASS(Scm_IOReadErrorClass, ScmIOReadError,
Scm_IOReadErrorClass  171 src/gauche/exception.h SCM_CLASS_DECL(Scm_IOReadErrorClass);
Scm_IOReadErrorClass  172 src/gauche/exception.h #define SCM_CLASS_IO_READ_ERROR      (&Scm_IOReadErrorClass)