use gnulib:: qualifiers for more stdio functions * input.cc (gnu_readline): Use gnulib::fflush instead of fflush. * sparse-util.cc (SparseCholPrint): Likewise. * kpse.cc (DEBUGF_END, hash_lookup, kpse_element_dirs): Likewise. * cmd-edit.cc (default_command_editor::do_readline): Likewise. * c-file-ptr-stream.cc (c_file_ptr_buf::flush): Likewise. (c_file_ptr_buf::xsgetn): Use gnulib::fread instead of fread. (c_file_ptr_buf::underflow_common): Use gnulib::fgetc instead of fgetc.

--- a/src/input.cc
+++ b/src/input.cc
@@ -213,7 +213,7 @@
           FILE *stream = command_editor::get_output_stream ();
 
           gnulib::fputs (s.c_str (), stream);
-          fflush (stream);
+          gnulib::fflush (stream);
         }
 
       FILE *curr_stream = command_editor::get_input_stream ();