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re PR libfortran/92100 (Formatted stream IO irreproducible read with binary data in file)

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2019-11-24  Jerry DeLisle  <jvdelisle@gcc.ngu.org>

	PR fortran/92100
	io/transfer.c (data_transfer_init_worker): Use fbuf_reset
	instead of fbuf_flush before the seek. Note that fbuf_reset
	calls fbuf_flush and adjusts fbuf pointers.

From-SVN: r278660
This commit is contained in:
Jerry DeLisle 2019-11-24 22:14:59 +00:00
parent 859174c824
commit 73af0c7b3a
2 changed files with 10 additions and 2 deletions
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7
libgfortran/ChangeLog
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@ -1,3 +1,10 @@
2019-11-24 Jerry DeLisle <jvdelisle@gcc.ngu.org>
PR fortran/92100
io/transfer.c (data_transfer_init_worker): Use fbuf_reset
instead of fbuf_flush before the seek. Note that fbuf_reset
calls fbuf_flush and adjusts fbuf pointers.
2019-11-23 Thomas Koenig <tkoenig@gcc.gnu.org>
Harald Anlauf <anlauf@gmx.de>

5
libgfortran/io/transfer.c
View File

@ -3309,8 +3309,9 @@ data_transfer_init_worker (st_parameter_dt *dtp, int read_flag)
if (dtp->pos != dtp->u.p.current_unit->strm_pos)
{
fbuf_flush (dtp->u.p.current_unit, dtp->u.p.mode);
if (sseek (dtp->u.p.current_unit->s, dtp->pos - 1, SEEK_SET) < 0)
fbuf_reset (dtp->u.p.current_unit);
if (sseek (dtp->u.p.current_unit->s, dtp->pos - 1,
SEEK_SET) < 0)
{
generate_error (&dtp->common, LIBERROR_OS, NULL);
return;