Scm_Force        2444 src/gauche.h   SCM_EXTERN ScmObj Scm_Force(ScmObj p);
Scm_Force         133 src/promise.c      SCM_RETURN(Scm_Force(SCM_OBJ(p)));
Scm_Force        3490 src/stdlib.c   SCM_RESULT = Scm_Force(p);