public inbox for gcc-bugs@sourceware.org help / color / mirror / Atom feed
* [Bug libfortran/34405] New: unformatted stream prohibits BACKSPACE
@ 2007-12-09 12:52 tkoenig at gcc dot gnu dot org
2007-12-09 13:22 ` [Bug libfortran/34405] " tkoenig at gcc dot gnu dot org
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: tkoenig at gcc dot gnu dot org @ 2007-12-09 12:52 UTC (permalink / raw)
To: gcc-bugs
Currently, we ignore the following:
$ cat unformatted_stream_backspace.f90
program main
open(2003,form="unformatted",access="stream")
write (2003) 1
write (2003) 2
backspace 2003
end program main
$ gfortran unformatted_stream_backspace.f90
$ ./a.out
$
This code is actually illegal, we could (but are not required to)
catch this:
F 2003 draft, 9.7:
A file that is connected for unformatted stream access shall not be referred to
by a BACKSPACE statement.
--
Summary: unformatted stream prohibits BACKSPACE
Product: gcc
Version: 4.3.0
Status: UNCONFIRMED
Keywords: diagnostic
Severity: enhancement
Priority: P3
Component: libfortran
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: tkoenig at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34405
^ permalink raw reply [flat|nested] 5+ messages in thread* [Bug libfortran/34405] unformatted stream prohibits BACKSPACE 2007-12-09 12:52 [Bug libfortran/34405] New: unformatted stream prohibits BACKSPACE tkoenig at gcc dot gnu dot org @ 2007-12-09 13:22 ` tkoenig at gcc dot gnu dot org 2007-12-09 18:00 ` jvdelisle at gcc dot gnu dot org ` (2 subsequent siblings) 3 siblings, 0 replies; 5+ messages in thread From: tkoenig at gcc dot gnu dot org @ 2007-12-09 13:22 UTC (permalink / raw) To: gcc-bugs ------- Comment #1 from tkoenig at gcc dot gnu dot org 2007-12-09 13:22 ------- Same thing for direct access and BACKSPACE, ENDFILE and REWIND. -- tkoenig at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- AssignedTo|unassigned at gcc dot gnu |tkoenig at gcc dot gnu dot |dot org |org Status|UNCONFIRMED |ASSIGNED Ever Confirmed|0 |1 Last reconfirmed|0000-00-00 00:00:00 |2007-12-09 13:22:39 date| | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34405 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libfortran/34405] unformatted stream prohibits BACKSPACE 2007-12-09 12:52 [Bug libfortran/34405] New: unformatted stream prohibits BACKSPACE tkoenig at gcc dot gnu dot org 2007-12-09 13:22 ` [Bug libfortran/34405] " tkoenig at gcc dot gnu dot org @ 2007-12-09 18:00 ` jvdelisle at gcc dot gnu dot org 2007-12-13 19:36 ` tkoenig at gcc dot gnu dot org 2007-12-13 19:41 ` tkoenig at gcc dot gnu dot org 3 siblings, 0 replies; 5+ messages in thread From: jvdelisle at gcc dot gnu dot org @ 2007-12-09 18:00 UTC (permalink / raw) To: gcc-bugs ------- Comment #2 from jvdelisle at gcc dot gnu dot org 2007-12-09 17:59 ------- I think a runtime error would be appropriate. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34405 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libfortran/34405] unformatted stream prohibits BACKSPACE 2007-12-09 12:52 [Bug libfortran/34405] New: unformatted stream prohibits BACKSPACE tkoenig at gcc dot gnu dot org 2007-12-09 13:22 ` [Bug libfortran/34405] " tkoenig at gcc dot gnu dot org 2007-12-09 18:00 ` jvdelisle at gcc dot gnu dot org @ 2007-12-13 19:36 ` tkoenig at gcc dot gnu dot org 2007-12-13 19:41 ` tkoenig at gcc dot gnu dot org 3 siblings, 0 replies; 5+ messages in thread From: tkoenig at gcc dot gnu dot org @ 2007-12-13 19:36 UTC (permalink / raw) To: gcc-bugs ------- Comment #3 from tkoenig at gcc dot gnu dot org 2007-12-13 19:35 ------- Subject: Bug 34405 Author: tkoenig Date: Thu Dec 13 19:35:09 2007 New Revision: 130912 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=130912 Log: 2007-12-13 Thomas Koenig <tkoenig@gcc.gnu.org> PR libfortran/34370 PR libfortran/34323 PR libfortran/34405 * io/io.h: Add previous_nonadvancing_write to gfc_unit. Add prototype for finish_last_advance_record. * io/file_pos.c (st_backspace): Generate error if backspace is attempted for direct access or unformatted stream. If there are bytes left from a previous ADVANCE="no", write them out before performing the backspace. (st_endfile): Generate error if endfile is attempted for direct access. If there are bytes left from a previous ADVANCE="no", write them out before performing the endfile. (st_rewind): Generate error if rewind is attempted for direct access. * unit.c (close_unit_1): Move functionality to write previously written bytes to... (finish_last_advance_record): ... here. * transfer.c (data_transfer_init): If reading, reset previous_nonadvancing_write. (finalize_transfer): Set the previous_noadvancing_write flag if we are writing and ADVANCE="no" was specified. Only call next_record() if advance="no" wasn't specified. 2007-12-13 Thomas Koenig <tkoenig@gcc.gnu.org> PR libfortran/34370 PR libfortran/34323 PR libfortran/34405 * gfortran.dg/advance_6.f90: New test case. * gfortran.dg/direct_io_7.f90: New test case. * gfortran.dg/streamio_13.f90: New test case. Added: trunk/gcc/testsuite/gfortran.dg/advance_6.f90 trunk/gcc/testsuite/gfortran.dg/direct_io_7.f90 trunk/gcc/testsuite/gfortran.dg/streamio_13.f90 Modified: trunk/gcc/testsuite/ChangeLog trunk/libgfortran/ChangeLog trunk/libgfortran/io/file_pos.c trunk/libgfortran/io/io.h trunk/libgfortran/io/transfer.c trunk/libgfortran/io/unit.c -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34405 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libfortran/34405] unformatted stream prohibits BACKSPACE 2007-12-09 12:52 [Bug libfortran/34405] New: unformatted stream prohibits BACKSPACE tkoenig at gcc dot gnu dot org ` (2 preceding siblings ...) 2007-12-13 19:36 ` tkoenig at gcc dot gnu dot org @ 2007-12-13 19:41 ` tkoenig at gcc dot gnu dot org 3 siblings, 0 replies; 5+ messages in thread From: tkoenig at gcc dot gnu dot org @ 2007-12-13 19:41 UTC (permalink / raw) To: gcc-bugs ------- Comment #4 from tkoenig at gcc dot gnu dot org 2007-12-13 19:41 ------- Fixed on trunk. Closing. -- tkoenig at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution| |FIXED http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34405 ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2007-12-13 19:41 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2007-12-09 12:52 [Bug libfortran/34405] New: unformatted stream prohibits BACKSPACE tkoenig at gcc dot gnu dot org 2007-12-09 13:22 ` [Bug libfortran/34405] " tkoenig at gcc dot gnu dot org 2007-12-09 18:00 ` jvdelisle at gcc dot gnu dot org 2007-12-13 19:36 ` tkoenig at gcc dot gnu dot org 2007-12-13 19:41 ` tkoenig at gcc dot gnu dot org
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).