_ext               92 maint/gnulib/lib/stdio-impl.h                          struct { unsigned char *_base; size_t _size; } _ext; \
_ext              115 maint/gnulib/lib/stdio-impl.h #  define fp_ub ((struct __sfileext *) fp->_ext._base)->_ub
_ext              122 maint/gnulib/lib/stdio-impl.h #  define fp_ub ((struct __sfileext *) fp_->_ext._base)->_ub