7d7b8bfe55
* acinclude.m4 (LIBGFOR_CHECK_ATTRIBUTE_VISIBILITY): New.
(LIBGFOR_CHECK_ATTRIBUTE_DLLEXPORT): New.
(LIBGFOR_CHECK_ATTRIBUTE_ALIAS): New.
* configure.ac: Use them.
* configure, config.h.in, aclocal.m4: Rebuild.
* libgfortran.h (prefix): Remove.
(PREFIX, IPREFIX): New.
(sym_rename, sym_rename1, sym_rename2): New.
(internal_proto, export_proto, export_proto_np): New.
(iexport_proto, iexport): New.
(iexport_data_proto, iexport_data): New.
* intrinsics/abort.c, intrinsics/args.c, intrinsics/associated.c,
intrinsics/cpu_time.c, intrinsics/cshift0.c,
intrinsics/date_and_time.c, intrinsics/env.c, intrinsics/eoshift0.c,
intrinsics/eoshift2.c, intrinsics/etime.c, intrinsics/exit.c,
intrinsics/flush.c, intrinsics/fnum.c, intrinsics/getXid.c,
intrinsics/getcwd.c, intrinsics/ishftc.c, intrinsics/mvbits.c,
intrinsics/pack_generic.c, intrinsics/rand.c, intrinsics/random.c,
intrinsics/reshape_generic.c, intrinsics/size.c,
intrinsics/spread_generic.c, intrinsics/stat.c,
intrinsics/string_intrinsics.c, intrinsics/system.c,
intrinsics/system_clock.c, intrinsics/transpose_generic.c,
intrinsics/umask.c, intrinsics/unlink.c, intrinsics/unpack_generic.c,
io/backspace.c, io/close.c, io/endfile.c, io/inquire.c, io/io.h,
io/open.c, io/rewind.c, io/transfer.c, libgfortran.h, m4/cshift1.m4,
m4/dotprod.m4, m4/dotprodc.m4, m4/dotprodl.m4, m4/eoshift1.m4,
m4/eoshift3.m4, m4/exponent.m4, m4/fraction.m4, m4/iforeach.m4,
m4/ifunction.m4, m4/matmul.m4, m4/matmull.m4, m4/nearest.m4,
m4/pow.m4, m4/reshape.m4, m4/set_exponent.m4, m4/shape.m4,
m4/transpose.m4, runtime/environ.c, runtime/error.c,
runtime/in_pack_generic.c, runtime/in_unpack_generic.c,
runtime/main.c, runtime/memory.c, runtime/pause.c, runtime/select.c,
runtime/stop.c: Use them to mark symbols internal or external.
* generated/*: Rebuild.
From-SVN: r92045
64 lines
1.8 KiB
C
64 lines
1.8 KiB
C
/* Copyright (C) 2002-2003 Free Software Foundation, Inc.
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Contributed by Andy Vaught
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This file is part of the GNU Fortran 95 runtime library (libgfortran).
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Libgfortran is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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Libgfortran is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Libgfortran; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include "config.h"
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#include "libgfortran.h"
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#include "io.h"
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/* rewind.c-- Implement the rewind statement */
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extern void st_rewind (void);
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export_proto(st_rewind);
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void
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st_rewind (void)
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{
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gfc_unit *u;
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library_start ();
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u = find_unit (ioparm.unit);
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if (u != NULL)
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{
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if (u->flags.access != ACCESS_SEQUENTIAL)
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generate_error (ERROR_BAD_OPTION,
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"Cannot REWIND a file opened for DIRECT access");
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else
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{
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/* If we have been writing to the file, the last written record
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is the last record in the file, so truncate the file now.
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Reset to read mode so two consecutive rewind statements
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don't delete the file contents. */
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if (u->mode==WRITING)
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struncate(u->s);
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u->mode = READING;
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u->last_record = 0;
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if (sseek (u->s, 0) == FAILURE)
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generate_error (ERROR_OS, NULL);
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u->endfile = NO_ENDFILE;
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u->current_record = 0;
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test_endfile (u);
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}
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}
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library_end ();
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}
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