[BZ #2337]

2006-12-13  Ulrich Drepper  <drepper@redhat.com>
	[BZ #2337]
	* libio/Makefile (tests): Add tst-setvbuf1.
	* libio/tst-setvbuf1.c: New file.

2006-12-08  Jakub Jelinek  <jakub@redhat.com>

	[BZ #2337]
	* libio/genops.c (__uflow): Fix a typo.
	* libio/wfiledoalloc.c (_IO_wfile_doallocate): Don't stat
	nor set _IO_LINE_BUF bit here.  Size the wide buffer based on
	the narrow buffer size.

2006-11-24  Jakub Jelinek  <jakub@redhat.com>

	[BZ #2337]
	* libio/libio.h (_IO_FLAGS2_USER_WBUF): Define.
	* libio/wgenops.c (_IO_wsetb, _IO_wdefault_finish): Test and set
	_IO_FLAGS2_USER_WBUF bit in _flags2 instead of _IO_USER_BUF bit
	in _flags.
	* libio/wstrops.c (_IO_wstr_overflow, enlarge_userbuf,
	_IO_wstr_finish): Likewise.
	* libio/wmemstream.c (open_wmemstream): Likewise.
	* libio/fileops.c (_IO_new_file_close_it): Call _IO_set[bgp]
	even for wide streams.

1 files changed, 9 insertions, 23 deletions

diff --git a/libio/wfiledoalloc.c b/libio/wfiledoalloc.c
index 2f8140b0ac..67a05175b2 100644
--- a/libio/wfiledoalloc.c
+++ b/libio/wfiledoalloc.c
@@ -1,4 +1,5 @@
-/* Copyright (C) 1993, 1997, 1999, 2000, 2002 Free Software Foundation, Inc.
+/* Copyright (C) 1993, 1997, 1999, 2000, 2002, 2006
+   Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -85,35 +86,20 @@ _IO_wfile_doallocate (fp)
      _IO_FILE *fp;
 {
   _IO_size_t size;
-  int couldbetty;
   wchar_t *p;
-  struct _G_stat64 st;
 
   /* Allocate room for the external buffer.  */
   if (fp->_IO_buf_base == NULL)
     INTUSE(_IO_file_doallocate) (fp);
 
-  if (fp->_fileno < 0 || _IO_SYSSTAT (fp, &st) < 0)
-    {
-      couldbetty = 0;
-      size = _IO_BUFSIZ;
-#if 0
-      /* do not try to optimise fseek() */
-      fp->_flags |= __SNPT;
-#endif
-    }
-  else
-    {
-      couldbetty = S_ISCHR (st.st_mode);
-#if _IO_HAVE_ST_BLKSIZE
-      size = st.st_blksize <= 0 ? _IO_BUFSIZ : st.st_blksize;
-#else
-      size = _IO_BUFSIZ;
-#endif
-    }
+  /* If narrow buffer is user allocated (set by setvbuf etc.),
+     use that size as the size of the wide buffer, when it is
+     allocated by _IO_file_doallocate, multiply that by size
+     of the wide character.  */
+  size = fp->_IO_buf_end - fp->_IO_buf_base;
+  if ((fp->_flags & _IO_USER_BUF))
+    size = (size + sizeof (wchar_t) - 1) / sizeof (wchar_t);
   ALLOC_WBUF (p, size * sizeof (wchar_t), EOF);
   INTUSE(_IO_wsetb) (fp, p, p + size, 1);
-  if (couldbetty && isatty (fp->_fileno))
-    fp->_flags |= _IO_LINE_BUF;
   return 1;
 }