Update.

2000-05-21  Jakub Jelinek  <jakub@redhat.com>

	* libio/libioP.h (_IO_CHECK_WIDE): Define.
	* libio/iosetbuffer.c (_IO_setbuffer): Use it.
	Call _IO_WSETBUF even for _mode 1.
	* libio/iosetvbuf.c (_IO_setvbuf): Likewise.
	* libio/fileops.c (_IO_new_file_fopen): Return NULL if
	_IO_CHECK_WIDE fails.

5 files changed, 14 insertions, 9 deletions

diff --git a/libio/bits/stdio.h b/libio/bits/stdio.h
index d698132..2522a38 100644
--- a/libio/bits/stdio.h
+++ b/libio/bits/stdio.h
@@ -1,5 +1,5 @@
 /* Optimizing macros and inline functions for stdio functions.
-   Copyright (C) 198 Free Software Foundation, Inc.
+   Copyright (C) 1998, 2000 Free Software Foundation, Inc.
 
    The GNU C Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public License as
diff --git a/libio/fileops.c b/libio/fileops.c
index c5aea3a..cd57370 100644
--- a/libio/fileops.c
+++ b/libio/fileops.c
@@ -278,9 +278,9 @@ _IO_new_file_fopen (fp, filename, mode, is32not64)
       /* Yep.  Load the appropriate conversions and set the orientation
 	 to wide.  */
 	struct gconv_fcts fcts;
-	struct _IO_codecvt *cc = &fp->_wide_data->_codecvt;
+	struct _IO_codecvt *cc;
 
-	if (__wcsmbs_named_conv (&fcts, cs + 5) != 0)
+	if (! _IO_CHECK_WIDE (fp) || __wcsmbs_named_conv (&fcts, cs + 5) != 0)
 	  {
 	    /* Something went wrong, we cannot load the conversion modules.
 	       This means we cannot proceed since the user explicitly asked
@@ -289,6 +289,8 @@ _IO_new_file_fopen (fp, filename, mode, is32not64)
 	    return NULL;
 	  }
 
+	cc = &fp->_wide_data->_codecvt;
+
 	/* The functions are always the same.  */
 	*cc = __libio_codecvt;
 
diff --git a/libio/iosetbuffer.c b/libio/iosetbuffer.c
index 852a2dd..99738a7 100644
--- a/libio/iosetbuffer.c
+++ b/libio/iosetbuffer.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1993, 95, 96, 97, 98, 99 Free Software Foundation, Inc.
+/* Copyright (C) 1993, 95, 96, 97, 98, 99, 2000 Free Software Foundation, Inc.
    This file is part of the GNU IO Library.
 
    This library is free software; you can redistribute it and/or
@@ -32,13 +32,13 @@ _IO_setbuffer (fp, buf, size)
      _IO_size_t size;
 {
   CHECK_FILE (fp, );
-  _IO_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, fp);
+  _IO_cleanup_region_start ((void (*) (void *)) _IO_funlockfile, fp);
   _IO_flockfile (fp);
   fp->_flags &= ~_IO_LINE_BUF;
   if (!buf)
     size = 0;
   (void) _IO_SETBUF (fp, buf, size);
-  if (fp->_vtable_offset == 0 && fp->_mode == 0)
+  if (fp->_vtable_offset == 0 && fp->_mode == 0 && _IO_CHECK_WIDE (fp))
     /* We also have to set the buffer using the wide char function.  */
     (void) _IO_WSETBUF (fp, buf, size);
   _IO_funlockfile (fp);
diff --git a/libio/iosetvbuf.c b/libio/iosetvbuf.c
index a0287a3..6736771 100644
--- a/libio/iosetvbuf.c
+++ b/libio/iosetvbuf.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1993, 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
+/* Copyright (C) 1993, 96, 97, 98, 99, 2000 Free Software Foundation, Inc.
    This file is part of the GNU IO Library.
 
    This library is free software; you can redistribute it and/or
@@ -38,7 +38,7 @@ _IO_setvbuf (fp, buf, mode, size)
 {
   int result;
   CHECK_FILE (fp, EOF);
-  _IO_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, fp);
+  _IO_cleanup_region_start ((void (*) (void *)) _IO_funlockfile, fp);
   _IO_flockfile (fp);
   switch (mode)
     {
@@ -90,7 +90,8 @@ _IO_setvbuf (fp, buf, mode, size)
       goto unlock_return;
     }
   result = _IO_SETBUF (fp, buf, size) == NULL ? EOF : 0;
-  if (result == 0 && fp->_vtable_offset == 0 && fp->_mode == 0)
+  if (result == 0 && fp->_vtable_offset == 0 && fp->_mode == 0
+      && _IO_CHECK_WIDE (fp))
     /* We also have to set the buffer using the wide char function.  */
     result = _IO_WSETBUF (fp, buf, size) == NULL ? EOF : 0;
 
diff --git a/libio/libioP.h b/libio/libioP.h
index d23436a..59d20cd 100644
--- a/libio/libioP.h
+++ b/libio/libioP.h
@@ -71,6 +71,8 @@ extern "C" {
 
 #define _IO_JUMPS(THIS) ((struct _IO_FILE_plus *) (THIS))->vtable
 #define _IO_WIDE_JUMPS(THIS) ((struct _IO_FILE *) (THIS))->_wide_data->_wide_vtable
+#define _IO_CHECK_WIDE(THIS) (((struct _IO_FILE *) (THIS))->_wide_data != NULL)
+
 #if _IO_JUMPS_OFFSET
 # define _IO_JUMPS_FUNC(THIS) \
  (*(struct _IO_jump_t **) ((void *) &((struct _IO_FILE_plus *) (THIS))->vtable\