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| author | Bud Davis <bdavis9659@comcast.net> | 2004-08-27 07:59:30 +0000 |
|---|---|---|
| committer | Bud Davis <bdavis@gcc.gnu.org> | 2004-08-27 07:59:30 +0000 |
| commit | 55948b693ed0cde602e64e7f670450a0e5e96b93 (patch) | |
| tree | 4050f4a405b432378b98cbcd6661afa4a1f0be61 /libgfortran/io/transfer.c | |
| parent | dc700f497caaf7c36db7220ab6f827b8dcf6a7e6 (diff) | |
| download | gcc-55948b693ed0cde602e64e7f670450a0e5e96b93.zip gcc-55948b693ed0cde602e64e7f670450a0e5e96b93.tar.gz gcc-55948b693ed0cde602e64e7f670450a0e5e96b93.tar.bz2 | |
re PR libfortran/16597 (gfortran: bug in unformatted I/O on scratch files)
2004-08-27 Bud Davis <bdavis9659@comcast.net>
PR fortran/16597
* io/io.h: created typedef for unit_mode.
* io/io.h (gfc_unit): added mode to unit structure.
* io/transfer.c (data_transfer_init): flush if a write then
read is done on a unit (direct access files).
* io/rewind.c (st_rewind): Used unit mode instead of global.
* gfortran.dg/pr16597.f90: New test.
From-SVN: r86654
Diffstat (limited to 'libgfortran/io/transfer.c')
| -rw-r--r-- | libgfortran/io/transfer.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/libgfortran/io/transfer.c b/libgfortran/io/transfer.c index b6f7c0e..3800d0b 100644 --- a/libgfortran/io/transfer.c +++ b/libgfortran/io/transfer.c @@ -1044,13 +1044,19 @@ data_transfer_init (int read_flag) return; } - /* Position the file. */ + /* Check to see if we might be reading what we wrote before */ + + if (g.mode == READING && current_unit->mode == WRITING) + flush(current_unit->s); + /* Position the file. */ if (sseek (current_unit->s, (ioparm.rec - 1) * current_unit->recl) == FAILURE) generate_error (ERROR_OS, NULL); } + current_unit->mode = g.mode; + /* Set the initial value of flags. */ g.blank_status = current_unit->flags.blank; |