Remove miscellaneous debris from libio.

This patch eliminates a number of #if 0 and #ifdef TODO blocks, macros
that are never used, macros that provide portability to substrates that
lack basic things like EINVAL and off_t, and other such debris.

I preserved IO_DEBUG and CHECK_FILE, even though as far as I can tell
IO_DEBUG is never defined and therefore CHECK_FILE never does
anything, because it seems like we might actually want to turn it _on_.

Installed stripped libraries and executables are unchanged, except,
again, that the line number of an assertion changes (this time it's
somewhere in fileops.c).

	* libio/libio.h (_IO_pos_BAD, _IO_pos_0, _IO_pos_adjust):
	Define here, unconditionally.
	* libio/iolibio.h (_IO_pos_BAD): Don't define here.
	* libio/libioP.h: Remove #if 0 blocks.
	(_IO_pos_BAD, _IO_pos_0, _IO_pos_adjust): Don't define here.
	(_IO_va_start, COERCE_FILE, MAYBE_SET_EINVAL): Don't define.
	(CHECK_FILE): Don't use MAYBE_SET_EINVAL or COERCE_FILE.  Fix style.

	* libio/clearerr.c, libio/fputc.c, libio/getchar.c:
	Assume weak_alias is always defined.

	* libio/fileops.c, libio/genops.c, libio/oldfileops.c
	* libio/oldpclose.c, libio/pclose.c, libio/wfileops.c:
	Remove #if 0 and #ifdef TODO blocks.
	Assume text_set_element is always defined.

	* libio/iofdopen.c, libio/iogetdelim.c, libio/oldiofdopen.c
	Use __set_errno (EINVAL) instead of MAYBE_SET_EINVAL.
	* libio/tst-mmap-eofsync.c: Make #if 1 block unconditional.

1 files changed, 0 insertions, 34 deletions

diff --git a/libio/wgenops.c b/libio/wgenops.c
index e8f5a53..884d72d 100644
--- a/libio/wgenops.c
+++ b/libio/wgenops.c
@@ -426,26 +426,6 @@ _IO_free_wbackup_area (FILE *fp)
 }
 libc_hidden_def (_IO_free_wbackup_area)
 
-#if 0
-int
-_IO_switch_to_wput_mode (FILE *fp)
-{
-  fp->_wide_data->_IO_write_base = fp->_wide_data->_IO_read_ptr;
-  fp->_wide_data->_IO_write_ptr = fp->_wide_data->_IO_read_ptr;
-  /* Following is wrong if line- or un-buffered? */
-  fp->_wide_data->_IO_write_end = (fp->_flags & _IO_IN_BACKUP
-				   ? fp->_wide_data->_IO_read_end
-				   : fp->_wide_data->_IO_buf_end);
-
-  fp->_wide_data->_IO_read_ptr = fp->_wide_data->_IO_read_end;
-  fp->_wide_data->_IO_read_base = fp->_wide_data->_IO_read_end;
-
-  fp->_flags |= _IO_CURRENTLY_PUTTING;
-  return 0;
-}
-#endif
-
-
 static int
 save_for_wbackup (FILE *fp, wchar_t *end_p)
 {
@@ -624,20 +604,6 @@ _IO_unsave_wmarkers (FILE *fp)
   struct _IO_marker *mark = fp->_markers;
   if (mark)
     {
-#ifdef TODO
-      streampos offset = seekoff (0, ios::cur, ios::in);
-      if (offset != EOF)
-	{
-	  offset += eGptr () - Gbase ();
-	  for ( ; mark != NULL; mark = mark->_next)
-	    mark->set_streampos (mark->_pos + offset);
-	}
-    else
-      {
-	for ( ; mark != NULL; mark = mark->_next)
-	  mark->set_streampos (EOF);
-      }
-#endif
       fp->_markers = 0;
     }