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re PR libfortran/26661 (Sequential formatted read goes too far)

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2006-03-25  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libgfortran/26661
	* io/io.h: Add read_sf so it can be used by read_x.
	* io/transfer.c (read_sf): Pass no_error flag to read_sf.  Use it to
	break out rather than error on EOF or EOR conditions.
	(read_block): Update call to read_sf.
	(read_block_direct): Ditto.
	* io/read.c (read_x): Use the modified read_sf instead of read_block.

From-SVN: r112390
This commit is contained in:
Jerry DeLisle 2006-03-26 02:15:44 +00:00
parent 44f808b02d
commit 0853054e96
4 changed files with 22 additions and 5 deletions

10
libgfortran/ChangeLog

@ -1,3 +1,13 @@
2006-03-25 Jerry DeLisle <jvdelisle@gcc.gnu.org>
PR libgfortran/26661
* io/io.h: Add read_sf so it can be used by read_x.
* io/transfer.c (read_sf): Pass no_error flag to read_sf. Use it to
break out rather than error on EOF or EOR conditions.
(read_block): Update call to read_sf.
(read_block_direct): Ditto.
* io/read.c (read_x): Use the modified read_sf instead of read_block.
2006-03-25 Thomas Koenig <Thomas.Koenig@online.de>
PR libfortran/26735

3
libgfortran/io/io.h

@ -743,6 +743,9 @@ internal_proto(type_name);
extern void *read_block (st_parameter_dt *, int *);
internal_proto(read_block);
extern char *read_sf (st_parameter_dt *, int *, int);
internal_proto(read_sf);
extern void *write_block (st_parameter_dt *, int);
internal_proto(write_block);

2
libgfortran/io/read.c

@ -847,7 +847,7 @@ read_x (st_parameter_dt *dtp, int n)
dtp->u.p.sf_read_comma = 0;
if (n > 0)
read_block (dtp, &n);
read_sf (dtp, &n, 1);
dtp->u.p.sf_read_comma = 1;
}

12
libgfortran/io/transfer.c

@ -132,8 +132,8 @@ current_mode (st_parameter_dt *dtp)
For larger allocations, we are forced to allocate memory on the
heap. Hopefully this won't happen very often. */
static char *
read_sf (st_parameter_dt *dtp, int *length)
char *
read_sf (st_parameter_dt *dtp, int *length, int no_error)
{
char *base, *p, *q;
int n, readlen, crlf;
@ -171,6 +171,8 @@ read_sf (st_parameter_dt *dtp, int *length)
EOR below. */
if (readlen < 1 && n == 0)
{
if (no_error)
break;
generate_error (&dtp->common, ERROR_END, NULL);
return NULL;
}
@ -202,6 +204,8 @@ read_sf (st_parameter_dt *dtp, int *length)
so we can just continue with a short read. */
if (dtp->u.p.current_unit->flags.pad == PAD_NO)
{
if (no_error)
break;
generate_error (&dtp->common, ERROR_EOR, NULL);
return NULL;
}
@ -265,7 +269,7 @@ read_block (st_parameter_dt *dtp, int *length)
if (dtp->u.p.current_unit->flags.form == FORM_FORMATTED &&
dtp->u.p.current_unit->flags.access == ACCESS_SEQUENTIAL)
return read_sf (dtp, length); /* Special case. */
return read_sf (dtp, length, 0); /* Special case. */
dtp->u.p.current_unit->bytes_left -= *length;
@ -315,7 +319,7 @@ read_block_direct (st_parameter_dt *dtp, void *buf, size_t *nbytes)
dtp->u.p.current_unit->flags.access == ACCESS_SEQUENTIAL)
{
length = (int *) nbytes;
data = read_sf (dtp, length); /* Special case. */
data = read_sf (dtp, length, 0); /* Special case. */
memcpy (buf, data, (size_t) *length);
return;
}