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* fortran/10197: direct acces files not unformatted by default
@ 2003-03-24 2:56 bdavis9659
0 siblings, 0 replies; 3+ messages in thread
From: bdavis9659 @ 2003-03-24 2:56 UTC (permalink / raw)
To: gcc-gnats
>Number: 10197
>Category: fortran
>Synopsis: direct acces files not unformatted by default
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: unassigned
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Mon Mar 24 00:36:00 UTC 2003
>Closed-Date:
>Last-Modified:
>Originator: bud davis
>Release: > g77 2.96
>Organization:
>Environment:
[bdavis@rh gcc]$ /usr/local/bin/g77 -v
Reading specs from /usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.4/specs
Configured with: ../gcc/configure --enable-languages=f77,c --enable-checking
Thread model: posix
gcc version 3.4 20030323 (experimental)
>Description:
OPEN(..ACCESS='DIRECT'..) should open a file with FORM='UNFORMATTED'.
It is being opened with FORM='FORMATTED', which causes a runtime error on the first unformatted I/O.
This is correct on g77 2.96, and not on the pre-release g77 3.3 or g77 3.4.
At the risk of being proven wrong by a plethora of language lawyers:):)
The FORTAN-77 standard, section 12.10.1 states; when discussing FORM=
"If this specifier is omitted, a value of UNFORMATTED is assumed if the file is being connected for direct access, and a value of FORMATTED is assumed if the file is being connected for sequential access. "
So, IMHO, this is how it should work.
>How-To-Repeat:
C demonstrate a direct access file is by default unformatted
IMPLICIT NONE
LOGICAL*4 ERROR /.FALSE./
CHARACTER*12 FORM
DATA FORM / '' /
OPEN(UNIT=60,
1 ACCESS='DIRECT',
2 STATUS='SCRATCH',
3 RECL=255)
INQUIRE(UNIT=60,FORM=FORM)
IF (FORM.EQ.'UNFORMATTED') THEN
PRINT*,'FORM IS ',FORM,' WHICH IS CORRECT.'
ELSE
PRINT*,'FORM IS ',FORM,' S/B UNFORMATTED.'
ERROR = .TRUE.
ENDIF
CLOSE(UNIT=60)
IF (ERROR) CALL ABORT
END
example run with g77 3.4
[bdavis@rh bin]$ /usr/local/bin/g77 -static -v -g -o open open.f
Driving: /usr/local/bin/g77 -static -v -g -o open open.f -lfrtbegin -lg2c -lm
Reading specs from /usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.4/specs
Configured with: ../gcc/configure --enable-checking --enable-languages=f77,c
Thread model: posix
gcc version 3.4 20030323 (experimental)
/usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.4/f771 open.f -quiet -dumpbase open.f -auxbase open -g -version -o /tmp/cc7EOAQ9.s
GNU F77 version 3.4 20030323 (experimental) (i686-pc-linux-gnu)
compiled by GNU C version 2.96 20000731 (Red Hat Linux 7.3 2.96-113).
GGC heuristics: --param ggc-min-expand=63 --param ggc-min-heapsize=62241
as -V -Qy -o /tmp/ccwslAzc.o /tmp/cc7EOAQ9.s
GNU assembler version 2.11.93.0.2 (i386-redhat-linux) using BFD version 2.11.93.0.2 20020207
/usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.4/collect2 -m elf_i386 -static -o open /usr/lib/crt1.o /usr/lib/crti.o /usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.4/crtbeginT.o -L/usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.4 -L/usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.4/../../.. /tmp/ccwslAzc.o -lfrtbegin -lg2c -lm -lgcc -lgcc_eh -lc -lgcc -lgcc_eh /usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.4/crtend.o /usr/lib/crtn.o
[bdavis@rh bin]$ ./open
FORM IS FORMATTED S/B UNFORMATTED.
Fortran abort routine called
Abort (core dumped)
run with gcc2.96
[bdavis@rh bin]$ g77 -static -v -g -o open open.f
g77 version 2.96 20000731 (Red Hat Linux 7.3 2.96-113) (from FSF-g77 version 0.5.26 20000731 (Red Hat Linux 7.3 2.96-113))
Driving: g77 -static -v -g -o open open.f -lg2c -lm
Reading specs from /usr/lib/gcc-lib/i386-redhat-linux/2.96/specs
gcc version 2.96 20000731 (Red Hat Linux 7.3 2.96-113)
/usr/lib/gcc-lib/i386-redhat-linux/2.96/f771 open.f -quiet -dumpbase open.f -g -version -o /tmp/cctO7UwQ.s
GNU F77 version 2.96 20000731 (Red Hat Linux 7.3 2.96-113) (i386-redhat-linux) compiled by GNU C version 2.96 20000731 (Red Hat Linux 7.3 2.96-113).
as -V -Qy -o /tmp/ccxotX8Q.o /tmp/cctO7UwQ.s
GNU assembler version 2.11.93.0.2 (i386-redhat-linux) using BFD version 2.11.93.0.2 20020207
/usr/lib/gcc-lib/i386-redhat-linux/2.96/collect2 -m elf_i386 -static -o open /usr/lib/gcc-lib/i386-redhat-linux/2.96/../../../crt1.o /usr/lib/gcc-lib/i386-redhat-linux/2.96/../../../crti.o /usr/lib/gcc-lib/i386-redhat-linux/2.96/crtbegin.o -L/usr/lib/gcc-lib/i386-redhat-linux/2.96 -L/usr/lib/gcc-lib/i386-redhat-linux/2.96/../../.. /tmp/ccxotX8Q.o -lg2c -lm -lgcc -lc -lgcc /usr/lib/gcc-lib/i386-redhat-linux/2.96/crtend.o /usr/lib/gcc-lib/i386-redhat-linux/2.96/../../../crtn.o[bdavis@rh bin]$ ./open
FORM IS UNFORMATTED WHICH IS CORRECT.
>Fix:
Index: gcc/libf2c/libI77/open.c
===================================================================
RCS file: /cvs/gcc/gcc/libf2c/libI77/open.c,v
retrieving revision 1.20
diff -c -3 -p -r1.20 open.c
*** gcc/libf2c/libI77/open.c 10 Jul 2002 21:17:29 -0000 1.20
--- gcc/libf2c/libI77/open.c 24 Mar 2003 00:30:17 -0000
*************** f_open (olist * a)
*** 148,154 ****
b->url = (int) a->orl;
b->ublnk = a->oblnk && (*a->oblnk == 'z' || *a->oblnk == 'Z');
if (a->ofm == 0)
! b->ufmt = 1;
else if (*a->ofm == 'f' || *a->ofm == 'F')
b->ufmt = 1;
else
--- 148,159 ----
b->url = (int) a->orl;
b->ublnk = a->oblnk && (*a->oblnk == 'z' || *a->oblnk == 'Z');
if (a->ofm == 0)
! {
! if ((a->oacc) && (*a->oacc == 'D' || *a->oacc == 'd'))
! b->ufmt = 0;
! else
! b->ufmt = 1;
! }
else if (*a->ofm == 'f' || *a->ofm == 'F')
b->ufmt = 1;
else
>Release-Note:
>Audit-Trail:
>Unformatted:
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: fortran/10197: direct acces files not unformatted by default
@ 2003-03-25 8:56 toon
0 siblings, 0 replies; 3+ messages in thread
From: toon @ 2003-03-25 8:56 UTC (permalink / raw)
To: bdavis9659, gcc-bugs, gcc-prs, nobody, toon
Synopsis: direct acces files not unformatted by default
Responsible-Changed-From-To: unassigned->toon
Responsible-Changed-By: toon
Responsible-Changed-When: Tue Mar 25 08:37:31 2003
Responsible-Changed-Why:
Fortran Maintainer.
State-Changed-From-To: open->closed
State-Changed-By: toon
State-Changed-When: Tue Mar 25 08:37:31 2003
State-Changed-Why:
Fixed using the patch suggested by submitter. Thanks !
http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=10197
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: fortran/10197: direct acces files not unformatted by default
@ 2003-03-24 14:26 Tim Prince
0 siblings, 0 replies; 3+ messages in thread
From: Tim Prince @ 2003-03-24 14:26 UTC (permalink / raw)
To: nobody; +Cc: gcc-prs
The following reply was made to PR fortran/10197; it has been noted by GNATS.
From: Tim Prince <timothyprince@sbcglobal.net>
To: bdavis9659@comcast.net, gcc-gnats@gcc.gnu.org
Cc:
Subject: Re: fortran/10197: direct acces files not unformatted by default
Date: Mon, 24 Mar 2003 06:15:26 -0800
On Sunday 23 March 2003 16:34, bdavis9659@comcast.net wrote:
> >Number: 10197
> >Category: fortran
> >Synopsis: direct acces files not unformatted by default
> OPEN(..ACCESS='DIRECT'..) should open a file with FORM='UNFORMATTED'.
>
> It is being opened with FORM='FORMATTED', which causes a runtime error on
> the first unformatted I/O.
>
> This is correct on g77 2.96, and not on the pre-release g77 3.3 or g77 3.4.
>
> At the risk of being proven wrong by a plethora of language lawyers:):)
>
> The FORTAN-77 standard, section 12.10.1 states; when discussing FORM=
>
> "If this specifier is omitted, a value of UNFORMATTED is assumed if the
> file is being connected for direct access, and a value of FORMATTED is
> assumed if the file is being connected for sequential access. "
>
> So, IMHO, this is how it should work.
>
> >How-To-Repeat:
>
> C demonstrate a direct access file is by default unformatted
> IMPLICIT NONE
> LOGICAL*4 ERROR /.FALSE./
> CHARACTER*12 FORM
> DATA FORM / '' /
> OPEN(UNIT=60,
> 1 ACCESS='DIRECT',
> 2 STATUS='SCRATCH',
> 3 RECL=255)
> INQUIRE(UNIT=60,FORM=FORM)
> IF (FORM.EQ.'UNFORMATTED') THEN
> PRINT*,'FORM IS ',FORM,' WHICH IS CORRECT.'
> ELSE
> PRINT*,'FORM IS ',FORM,' S/B UNFORMATTED.'
> ERROR = .TRUE.
> ENDIF
> CLOSE(UNIT=60)
> IF (ERROR) CALL ABORT
> END
>
I "sent mail to interested parties," but, AFAICT, all the interested parties
selected by gnats-web bounced my mail. I pointed out that the version of
open.c included in gcc-3.2.2 implements the standard, in accordance with
Bud's test. I rebuilt gcc-3.3 with that version of open.c, and it passed
Bud's test. So, gcc-3.3 has a regression from gcc-3.2.2, apparently caused
by an out of date libf2c.
--
Tim Prince
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2003-03-25 8:37 UTC | newest]
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2003-03-24 2:56 fortran/10197: direct acces files not unformatted by default bdavis9659
2003-03-24 14:26 Tim Prince
2003-03-25 8:56 toon
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