SCM_FOREIGN_POINTER 5681 src/extlib.c     fp = SCM_FOREIGN_POINTER(fp_scm);
SCM_FOREIGN_POINTER 5708 src/extlib.c     fp = SCM_FOREIGN_POINTER(fp_scm);
SCM_FOREIGN_POINTER 5740 src/extlib.c     fp = SCM_FOREIGN_POINTER(fp_scm);
SCM_FOREIGN_POINTER  683 src/gauche.h       ((type)(SCM_FOREIGN_POINTER(obj)->ptr))