Scm_SystemErrorClass  138 src/error.c    SCM_DEFINE_BASE_CLASS(Scm_SystemErrorClass, ScmSystemError,
Scm_SystemErrorClass  124 src/gauche/exception.h SCM_CLASS_DECL(Scm_SystemErrorClass);
Scm_SystemErrorClass  125 src/gauche/exception.h #define SCM_CLASS_SYSTEM_ERROR     (&Scm_SystemErrorClass)