Scm_SysSigsetClass 2573 src/gauche.h   SCM_CLASS_DECL(Scm_SysSigsetClass);
Scm_SysSigsetClass 2574 src/gauche.h   #define SCM_CLASS_SYS_SIGSET   (&Scm_SysSigsetClass)
Scm_SysSigsetClass  319 src/signal.c   SCM_DEFINE_BUILTIN_CLASS(Scm_SysSigsetClass, sigset_print,
Scm_SysSigsetClass  727 src/signal.c       Scm_InitStaticClass(&Scm_SysSigsetClass, "<sys-sigset>",