[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.

9 files changed, 64 insertions, 40 deletions

diff --git a/libio/Makefile b/libio/Makefile
index 0529744e3d..553fbda74a 100644
--- a/libio/Makefile
+++ b/libio/Makefile
@@ -57,7 +57,8 @@ tests = tst_swprintf tst_wprintf tst_swscanf tst_wscanf tst_getwc tst_putwc   \
 	bug-ungetc2 bug-ftell bug-ungetc3 bug-ungetc4 tst-fopenloc2 \
 	tst-memstream1 tst-memstream2 \
 	tst-wmemstream1 tst-wmemstream2 \
-	bug-memstream1 bug-wmemstream1
+	bug-memstream1 bug-wmemstream1 \
+	tst-setvbuf1
 test-srcs = test-freopen
 
 all: # Make this the default target; it will be defined in Rules.
diff --git a/libio/fileops.c b/libio/fileops.c
index cf7fd65421..dbd7a7a8f2 100644
--- a/libio/fileops.c
+++ b/libio/fileops.c
@@ -174,14 +174,8 @@ _IO_new_file_close_it (fp)
   close_status = _IO_SYSCLOSE (fp);
 
   /* Free buffer. */
-  if (fp->_mode <= 0)
-    {
-      INTUSE(_IO_setb) (fp, NULL, NULL, 0);
-      _IO_setg (fp, NULL, NULL, NULL);
-      _IO_setp (fp, NULL, NULL);
-    }
 #if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T
-  else
+  if (fp->_mode > 0)
     {
       if (_IO_have_wbackup (fp))
 	INTUSE(_IO_free_wbackup_area) (fp);
@@ -190,6 +184,9 @@ _IO_new_file_close_it (fp)
       _IO_wsetp (fp, NULL, NULL);
     }
 #endif
+  INTUSE(_IO_setb) (fp, NULL, NULL, 0);
+  _IO_setg (fp, NULL, NULL, NULL);
+  _IO_setp (fp, NULL, NULL);
 
   INTUSE(_IO_un_link) ((struct _IO_FILE_plus *) fp);
   fp->_flags = _IO_MAGIC|CLOSED_FILEBUF_FLAGS;
diff --git a/libio/genops.c b/libio/genops.c
index 5f223524a0..8d62da7781 100644
--- a/libio/genops.c
+++ b/libio/genops.c
@@ -367,7 +367,7 @@ __uflow (fp)
 #endif
 
   if (fp->_mode == 0)
-    _IO_fwide (fp, -11);
+    _IO_fwide (fp, -1);
   if (_IO_in_put_mode (fp))
     if (INTUSE(_IO_switch_to_get_mode) (fp) == EOF)
       return EOF;
diff --git a/libio/libio.h b/libio/libio.h
index 6f9c418c31..428e035540 100644
--- a/libio/libio.h
+++ b/libio/libio.h
@@ -142,6 +142,7 @@
 #ifdef _LIBC
 # define _IO_FLAGS2_FORTIFY 4
 #endif
+#define _IO_FLAGS2_USER_WBUF 8
 
 /* These are "formatting flags" matching the iostream fmtflags enum values. */
 #define _IO_SKIPWS 01
diff --git a/libio/tst-setvbuf1.c b/libio/tst-setvbuf1.c
new file mode 100644
index 0000000000..9222d4050d
--- /dev/null
+++ b/libio/tst-setvbuf1.c
@@ -0,0 +1,39 @@
+/* Dereived from the test case in BZ #2337.  */
+#include <errno.h>
+#include <error.h>
+#include <fcntl.h>
+#include <locale.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <wchar.h>
+
+
+static char buf[512] __attribute__ ((aligned (4096)));
+
+
+static int
+do_test (void)
+{
+  setlocale (LC_ALL, "de_DE.UTF-8");
+
+  FILE *fp = fdopen (dup (STDOUT_FILENO), "a");
+  if (fp == NULL)
+    error (EXIT_FAILURE, errno, "fdopen(,\"a\")");
+
+  setvbuf (fp, buf, _IOFBF, sizeof (buf));
+
+  /* fwprintf to unbuffered stream.   */
+  fwprintf (fp, L"hello.\n");
+
+  fclose (fp);
+
+  /* touch my buffer */
+  buf[45] = 'a';
+
+  return 0;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
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;
 }
diff --git a/libio/wgenops.c b/libio/wgenops.c
index 355fd2603d..760a413dc3 100644
--- a/libio/wgenops.c
+++ b/libio/wgenops.c
@@ -115,14 +115,14 @@ _IO_wsetb (f, b, eb, a)
      wchar_t *eb;
      int a;
 {
-  if (f->_wide_data->_IO_buf_base && !(f->_flags & _IO_USER_BUF))
+  if (f->_wide_data->_IO_buf_base && !(f->_flags2 & _IO_FLAGS2_USER_WBUF))
     FREE_BUF (f->_wide_data->_IO_buf_base, _IO_wblen (f) * sizeof (wchar_t));
   f->_wide_data->_IO_buf_base = b;
   f->_wide_data->_IO_buf_end = eb;
   if (a)
-    f->_flags &= ~_IO_USER_BUF;
+    f->_flags2 &= ~_IO_FLAGS2_USER_WBUF;
   else
-    f->_flags |= _IO_USER_BUF;
+    f->_flags2 |= _IO_FLAGS2_USER_WBUF;
 }
 INTDEF(_IO_wsetb)
 
@@ -198,7 +198,7 @@ _IO_wdefault_finish (fp, dummy)
      int dummy;
 {
   struct _IO_marker *mark;
-  if (fp->_wide_data->_IO_buf_base && !(fp->_flags & _IO_USER_BUF))
+  if (fp->_wide_data->_IO_buf_base && !(fp->_flags2 & _IO_FLAGS2_USER_WBUF))
     {
       FREE_BUF (fp->_wide_data->_IO_buf_base,
 		_IO_wblen (fp) * sizeof (wchar_t));
diff --git a/libio/wmemstream.c b/libio/wmemstream.c
index 577931888d..7bf6a429ac 100644
--- a/libio/wmemstream.c
+++ b/libio/wmemstream.c
@@ -92,7 +92,7 @@ open_wmemstream (bufloc, sizeloc)
   _IO_fwide (&new_f->fp._sf._sbf._f, 1);
   _IO_wstr_init_static (&new_f->fp._sf._sbf._f, buf,
 			_IO_BUFSIZ / sizeof (wchar_t), buf);
-  new_f->fp._sf._sbf._f._flags &= ~_IO_USER_BUF;
+  new_f->fp._sf._sbf._f._flags2 &= ~_IO_FLAGS2_USER_WBUF;
   new_f->fp._sf._s._allocate_buffer = (_IO_alloc_type) malloc;
   new_f->fp._sf._s._free_buffer = (_IO_free_type) free;
 
diff --git a/libio/wstrops.c b/libio/wstrops.c
index 8b862fb989..c5aae7bc6a 100644
--- a/libio/wstrops.c
+++ b/libio/wstrops.c
@@ -88,7 +88,7 @@ _IO_wstr_overflow (fp, c)
   pos = fp->_wide_data->_IO_write_ptr - fp->_wide_data->_IO_write_base;
   if (pos >= (_IO_size_t) (_IO_wblen (fp) + flush_only))
     {
-      if (fp->_flags & _IO_USER_BUF) /* not allowed to enlarge */
+      if (fp->_flags2 & _IO_FLAGS2_USER_WBUF) /* not allowed to enlarge */
 	return WEOF;
       else
 	{
@@ -182,7 +182,7 @@ enlarge_userbuf (_IO_FILE *fp, _IO_off64_t offset, int reading)
   _IO_ssize_t oldend = wd->_IO_write_end - wd->_IO_write_base;
 
   /* Try to enlarge the buffer.  */
-  if (fp->_flags & _IO_USER_BUF)
+  if (fp->_flags2 & _IO_FLAGS2_USER_WBUF)
     /* User-provided buffer.  */
     return 1;
 
@@ -335,7 +335,7 @@ _IO_wstr_finish (fp, dummy)
      _IO_FILE *fp;
      int dummy;
 {
-  if (fp->_wide_data->_IO_buf_base && !(fp->_flags & _IO_USER_BUF))
+  if (fp->_wide_data->_IO_buf_base && !(fp->_flags2 & _IO_FLAGS2_USER_WBUF))
     (((_IO_strfile *) fp)->_s._free_buffer) (fp->_wide_data->_IO_buf_base);
   fp->_wide_data->_IO_buf_base = NULL;