fp_ub             115 lib/stdio-impl.h #  define fp_ub ((struct __sfileext *) fp->_ext._base)->_ub
fp_ub             122 lib/stdio-impl.h #  define fp_ub ((struct __sfileext *) fp_->_ext._base)->_ub
fp_ub             124 lib/stdio-impl.h #  define fp_ub fp_->_ub