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diff --git a/gcc-4.6/libgfortran/io/intrinsics.c b/gcc-4.6/libgfortran/io/intrinsics.c
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+/* Implementation of the FGET, FGETC, FPUT, FPUTC, FLUSH
+ FTELL, TTYNAM and ISATTY intrinsics.
+ Copyright (C) 2005, 2007, 2009, 2010, 2011 Free Software
+ Foundation, Inc.
+
+This file is part of the GNU Fortran runtime library (libgfortran).
+
+Libgfortran is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public
+License as published by the Free Software Foundation; either
+version 3 of the License, or (at your option) any later version.
+
+Libgfortran is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+<http://www.gnu.org/licenses/>. */
+
+#include "io.h"
+#include "fbuf.h"
+#include "unix.h"
+
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+
+#include <string.h>
+
+static const int five = 5;
+static const int six = 6;
+
+extern int PREFIX(fgetc) (const int *, char *, gfc_charlen_type);
+export_proto_np(PREFIX(fgetc));
+
+int
+PREFIX(fgetc) (const int * unit, char * c, gfc_charlen_type c_len)
+{
+ int ret;
+ gfc_unit * u = find_unit (*unit);
+
+ if (u == NULL)
+ return -1;
+
+ fbuf_reset (u);
+ if (u->mode == WRITING)
+ {
+ sflush (u->s);
+ u->mode = READING;
+ }
+
+ memset (c, ' ', c_len);
+ ret = sread (u->s, c, 1);
+ unlock_unit (u);
+
+ if (ret < 0)
+ return ret;
+
+ if (ret != 1)
+ return -1;
+ else
+ return 0;
+}
+
+
+#define FGETC_SUB(kind) \
+ extern void fgetc_i ## kind ## _sub \
+ (const int *, char *, GFC_INTEGER_ ## kind *, gfc_charlen_type); \
+ export_proto(fgetc_i ## kind ## _sub); \
+ void fgetc_i ## kind ## _sub \
+ (const int * unit, char * c, GFC_INTEGER_ ## kind * st, gfc_charlen_type c_len) \
+ { if (st != NULL) \
+ *st = PREFIX(fgetc) (unit, c, c_len); \
+ else \
+ PREFIX(fgetc) (unit, c, c_len); }
+
+FGETC_SUB(1)
+FGETC_SUB(2)
+FGETC_SUB(4)
+FGETC_SUB(8)
+
+
+extern int PREFIX(fget) (char *, gfc_charlen_type);
+export_proto_np(PREFIX(fget));
+
+int
+PREFIX(fget) (char * c, gfc_charlen_type c_len)
+{
+ return PREFIX(fgetc) (&five, c, c_len);
+}
+
+
+#define FGET_SUB(kind) \
+ extern void fget_i ## kind ## _sub \
+ (char *, GFC_INTEGER_ ## kind *, gfc_charlen_type); \
+ export_proto(fget_i ## kind ## _sub); \
+ void fget_i ## kind ## _sub \
+ (char * c, GFC_INTEGER_ ## kind * st, gfc_charlen_type c_len) \
+ { if (st != NULL) \
+ *st = PREFIX(fgetc) (&five, c, c_len); \
+ else \
+ PREFIX(fgetc) (&five, c, c_len); }
+
+FGET_SUB(1)
+FGET_SUB(2)
+FGET_SUB(4)
+FGET_SUB(8)
+
+
+
+extern int PREFIX(fputc) (const int *, char *, gfc_charlen_type);
+export_proto_np(PREFIX(fputc));
+
+int
+PREFIX(fputc) (const int * unit, char * c,
+ gfc_charlen_type c_len __attribute__((unused)))
+{
+ ssize_t s;
+ gfc_unit * u = find_unit (*unit);
+
+ if (u == NULL)
+ return -1;
+
+ fbuf_reset (u);
+ if (u->mode == READING)
+ {
+ sflush (u->s);
+ u->mode = WRITING;
+ }
+
+ s = swrite (u->s, c, 1);
+ unlock_unit (u);
+ if (s < 0)
+ return -1;
+ return 0;
+}
+
+
+#define FPUTC_SUB(kind) \
+ extern void fputc_i ## kind ## _sub \
+ (const int *, char *, GFC_INTEGER_ ## kind *, gfc_charlen_type); \
+ export_proto(fputc_i ## kind ## _sub); \
+ void fputc_i ## kind ## _sub \
+ (const int * unit, char * c, GFC_INTEGER_ ## kind * st, gfc_charlen_type c_len) \
+ { if (st != NULL) \
+ *st = PREFIX(fputc) (unit, c, c_len); \
+ else \
+ PREFIX(fputc) (unit, c, c_len); }
+
+FPUTC_SUB(1)
+FPUTC_SUB(2)
+FPUTC_SUB(4)
+FPUTC_SUB(8)
+
+
+extern int PREFIX(fput) (char *, gfc_charlen_type);
+export_proto_np(PREFIX(fput));
+
+int
+PREFIX(fput) (char * c, gfc_charlen_type c_len)
+{
+ return PREFIX(fputc) (&six, c, c_len);
+}
+
+
+#define FPUT_SUB(kind) \
+ extern void fput_i ## kind ## _sub \
+ (char *, GFC_INTEGER_ ## kind *, gfc_charlen_type); \
+ export_proto(fput_i ## kind ## _sub); \
+ void fput_i ## kind ## _sub \
+ (char * c, GFC_INTEGER_ ## kind * st, gfc_charlen_type c_len) \
+ { if (st != NULL) \
+ *st = PREFIX(fputc) (&six, c, c_len); \
+ else \
+ PREFIX(fputc) (&six, c, c_len); }
+
+FPUT_SUB(1)
+FPUT_SUB(2)
+FPUT_SUB(4)
+FPUT_SUB(8)
+
+
+/* SUBROUTINE FLUSH(UNIT)
+ INTEGER, INTENT(IN), OPTIONAL :: UNIT */
+
+extern void flush_i4 (GFC_INTEGER_4 *);
+export_proto(flush_i4);
+
+void
+flush_i4 (GFC_INTEGER_4 *unit)
+{
+ gfc_unit *us;
+
+ /* flush all streams */
+ if (unit == NULL)
+ flush_all_units ();
+ else
+ {
+ us = find_unit (*unit);
+ if (us != NULL)
+ {
+ sflush (us->s);
+ unlock_unit (us);
+ }
+ }
+}
+
+
+extern void flush_i8 (GFC_INTEGER_8 *);
+export_proto(flush_i8);
+
+void
+flush_i8 (GFC_INTEGER_8 *unit)
+{
+ gfc_unit *us;
+
+ /* flush all streams */
+ if (unit == NULL)
+ flush_all_units ();
+ else
+ {
+ us = find_unit (*unit);
+ if (us != NULL)
+ {
+ sflush (us->s);
+ unlock_unit (us);
+ }
+ }
+}
+
+/* FSEEK intrinsic */
+
+extern void fseek_sub (int *, GFC_IO_INT *, int *, int *);
+export_proto(fseek_sub);
+
+void
+fseek_sub (int * unit, GFC_IO_INT * offset, int * whence, int * status)
+{
+ gfc_unit * u = find_unit (*unit);
+ ssize_t result = -1;
+
+ if (u != NULL && is_seekable(u->s))
+ {
+ result = sseek(u->s, *offset, *whence);
+
+ unlock_unit (u);
+ }
+
+ if (status)
+ *status = (result < 0 ? -1 : 0);
+}
+
+
+
+/* FTELL intrinsic */
+
+static gfc_offset
+gf_ftell (int unit)
+{
+ gfc_unit * u = find_unit (unit);
+ if (u == NULL)
+ return -1;
+ int pos = fbuf_reset (u);
+ if (pos != 0)
+ sseek (u->s, pos, SEEK_CUR);
+ gfc_offset ret = stell (u->s);
+ unlock_unit (u);
+ return ret;
+}
+
+extern size_t PREFIX(ftell) (int *);
+export_proto_np(PREFIX(ftell));
+
+size_t
+PREFIX(ftell) (int * unit)
+{
+ return gf_ftell (*unit);
+}
+
+#define FTELL_SUB(kind) \
+ extern void ftell_i ## kind ## _sub (int *, GFC_INTEGER_ ## kind *); \
+ export_proto(ftell_i ## kind ## _sub); \
+ void \
+ ftell_i ## kind ## _sub (int * unit, GFC_INTEGER_ ## kind * offset) \
+ { \
+ *offset = gf_ftell (*unit); \
+ }
+
+FTELL_SUB(1)
+FTELL_SUB(2)
+FTELL_SUB(4)
+FTELL_SUB(8)
+
+
+
+/* LOGICAL FUNCTION ISATTY(UNIT)
+ INTEGER, INTENT(IN) :: UNIT */
+
+extern GFC_LOGICAL_4 isatty_l4 (int *);
+export_proto(isatty_l4);
+
+GFC_LOGICAL_4
+isatty_l4 (int *unit)
+{
+ gfc_unit *u;
+ GFC_LOGICAL_4 ret = 0;
+
+ u = find_unit (*unit);
+ if (u != NULL)
+ {
+ ret = (GFC_LOGICAL_4) stream_isatty (u->s);
+ unlock_unit (u);
+ }
+ return ret;
+}
+
+
+extern GFC_LOGICAL_8 isatty_l8 (int *);
+export_proto(isatty_l8);
+
+GFC_LOGICAL_8
+isatty_l8 (int *unit)
+{
+ gfc_unit *u;
+ GFC_LOGICAL_8 ret = 0;
+
+ u = find_unit (*unit);
+ if (u != NULL)
+ {
+ ret = (GFC_LOGICAL_8) stream_isatty (u->s);
+ unlock_unit (u);
+ }
+ return ret;
+}
+
+
+/* SUBROUTINE TTYNAM(UNIT,NAME)
+ INTEGER,SCALAR,INTENT(IN) :: UNIT
+ CHARACTER,SCALAR,INTENT(OUT) :: NAME */
+
+extern void ttynam_sub (int *, char *, gfc_charlen_type);
+export_proto(ttynam_sub);
+
+void
+ttynam_sub (int *unit, char * name, gfc_charlen_type name_len)
+{
+ gfc_unit *u;
+ int nlen;
+ int err = 1;
+
+ u = find_unit (*unit);
+ if (u != NULL)
+ {
+ err = stream_ttyname (u->s, name, name_len);
+ if (err == 0)
+ {
+ nlen = strlen (name);
+ memset (&name[nlen], ' ', name_len - nlen);
+ }
+
+ unlock_unit (u);
+ }
+ if (err != 0)
+ memset (name, ' ', name_len);
+}
+
+
+extern void ttynam (char **, gfc_charlen_type *, int);
+export_proto(ttynam);
+
+void
+ttynam (char ** name, gfc_charlen_type * name_len, int unit)
+{
+ gfc_unit *u;
+
+ u = find_unit (unit);
+ if (u != NULL)
+ {
+ *name = get_mem (TTY_NAME_MAX);
+ int err = stream_ttyname (u->s, *name, TTY_NAME_MAX);
+ if (err == 0)
+ {
+ *name_len = strlen (*name);
+ unlock_unit (u);
+ return;
+ }
+ free (*name);
+ unlock_unit (u);
+ }
+
+ *name_len = 0;
+ *name = NULL;
+}
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