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* [Bug fortran/16898] New: Aliasing problem with array descriptors
@ 2004-08-06 14:32 pbrook at gcc dot gnu dot org
2004-08-07 22:09 ` [Bug fortran/16898] " pinskia at gcc dot gnu dot org
` (7 more replies)
0 siblings, 8 replies; 9+ messages in thread
From: pbrook at gcc dot gnu dot org @ 2004-08-06 14:32 UTC (permalink / raw)
To: gcc-bugs
Following code compiled with gfortran -O2 -mtune=i686
Could be a frontend bug not setting alias sets properly. When foo is inlined,
a=>NULL is then scheduled after the body of foo.
Based on gfortran.dg/ret_pointer_1.f90
program aliasing_borken
integer, pointer, dimension(:) :: a
integer, target, dimension(2) :: b
a => NULL()
call foo(a);
if (.not. associated (a, b)) call abort
contains
subroutine foo(r)
integer, pointer, dimension(:) :: r
r => b
end subroutine
end program
--
Summary: Aliasing problem with array descriptors
Product: gcc
Version: 3.5.0
Status: UNCONFIRMED
Keywords: wrong-code
Severity: normal
Priority: P2
Component: fortran
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: pbrook at gcc dot gnu dot org
CC: gcc-bugs at gcc dot gnu dot org
GCC build triplet: i686-pc-linux-gnu
GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16898
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug fortran/16898] Aliasing problem with array descriptors
2004-08-06 14:32 [Bug fortran/16898] New: Aliasing problem with array descriptors pbrook at gcc dot gnu dot org
@ 2004-08-07 22:09 ` pinskia at gcc dot gnu dot org
2004-12-10 13:02 ` paulthomas2 at wanadoo dot fr
` (6 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-08-07 22:09 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2004-08-07 22:09 -------
Confirmed it is the aliasing sets which are incorrect.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed| |1
Last reconfirmed|0000-00-00 00:00:00 |2004-08-07 22:09:14
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16898
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug fortran/16898] Aliasing problem with array descriptors
2004-08-06 14:32 [Bug fortran/16898] New: Aliasing problem with array descriptors pbrook at gcc dot gnu dot org
2004-08-07 22:09 ` [Bug fortran/16898] " pinskia at gcc dot gnu dot org
@ 2004-12-10 13:02 ` paulthomas2 at wanadoo dot fr
2004-12-10 13:21 ` pbrook at gcc dot gnu dot org
` (5 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: paulthomas2 at wanadoo dot fr @ 2004-12-10 13:02 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From paulthomas2 at wanadoo dot fr 2004-12-10 13:02 -------
Andrew,
This one is fixed now, isn't it? It runs fine with the CVS of 20041205
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16898
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug fortran/16898] Aliasing problem with array descriptors
2004-08-06 14:32 [Bug fortran/16898] New: Aliasing problem with array descriptors pbrook at gcc dot gnu dot org
2004-08-07 22:09 ` [Bug fortran/16898] " pinskia at gcc dot gnu dot org
2004-12-10 13:02 ` paulthomas2 at wanadoo dot fr
@ 2004-12-10 13:21 ` pbrook at gcc dot gnu dot org
2005-05-15 17:51 ` aj at gcc dot gnu dot org
` (4 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: pbrook at gcc dot gnu dot org @ 2004-12-10 13:21 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pbrook at gcc dot gnu dot org 2004-12-10 13:21 -------
This is not fixed.
It still fails for me at -O2 in i686-linux.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16898
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug fortran/16898] Aliasing problem with array descriptors
2004-08-06 14:32 [Bug fortran/16898] New: Aliasing problem with array descriptors pbrook at gcc dot gnu dot org
` (2 preceding siblings ...)
2004-12-10 13:21 ` pbrook at gcc dot gnu dot org
@ 2005-05-15 17:51 ` aj at gcc dot gnu dot org
2005-05-18 21:25 ` tobi at gcc dot gnu dot org
` (3 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: aj at gcc dot gnu dot org @ 2005-05-15 17:51 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From aj at gcc dot gnu dot org 2005-05-15 17:50 -------
I have on Linux/x86-64 these passes - which means all of them pass:
XPASS: gfortran.dg/ret_pointer_1.f90 -O0 execution test
XPASS: gfortran.dg/ret_pointer_1.f90 -O1 execution test
XPASS: gfortran.dg/ret_pointer_1.f90 -O2 execution test
XPASS: gfortran.dg/ret_pointer_1.f90 -O3 -fomit-frame-pointer execution test
XPASS: gfortran.dg/ret_pointer_1.f90 -O3 -fomit-frame-pointer -funroll-loops e
xecution test
XPASS: gfortran.dg/ret_pointer_1.f90 -O3 -fomit-frame-pointer -funroll-all-loop
s -finline-functions execution test
XPASS: gfortran.dg/ret_pointer_1.f90 -O3 -g execution test
XPASS: gfortran.dg/ret_pointer_1.f90 -Os execution test
On Linux/i686 I get less passes:
XPASS: gfortran.dg/ret_pointer_1.f90 -O0 execution test
XPASS: gfortran.dg/ret_pointer_1.f90 -O1 execution test
XPASS: gfortran.dg/ret_pointer_1.f90 -O3 -fomit-frame-pointer execution test
XPASS: gfortran.dg/ret_pointer_1.f90 -O3 -fomit-frame-pointer -funroll-loops
execution test
XPASS: gfortran.dg/ret_pointer_1.f90 -O3 -fomit-frame-pointer
-funroll-all-loops -finline-functions execution test
So, -Os and -O2 are broken on i686.
--
What |Removed |Added
----------------------------------------------------------------------------
CC| |aj at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16898
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug fortran/16898] Aliasing problem with array descriptors
2004-08-06 14:32 [Bug fortran/16898] New: Aliasing problem with array descriptors pbrook at gcc dot gnu dot org
` (3 preceding siblings ...)
2005-05-15 17:51 ` aj at gcc dot gnu dot org
@ 2005-05-18 21:25 ` tobi at gcc dot gnu dot org
2005-06-04 21:00 ` tobi at gcc dot gnu dot org
` (2 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: tobi at gcc dot gnu dot org @ 2005-05-18 21:25 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From tobi at gcc dot gnu dot org 2005-05-18 21:24 -------
Fixed by Zdenek's recent patch:
http://gcc.gnu.org/ml/fortran/2005-05/msg00178.html, keeping this bug open until
the patch is also committed to the 4.0 branch.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16898
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug fortran/16898] Aliasing problem with array descriptors
2004-08-06 14:32 [Bug fortran/16898] New: Aliasing problem with array descriptors pbrook at gcc dot gnu dot org
` (5 preceding siblings ...)
2005-06-04 21:00 ` tobi at gcc dot gnu dot org
@ 2005-06-04 21:00 ` cvs-commit at gcc dot gnu dot org
2005-06-04 21:01 ` tobi at gcc dot gnu dot org
7 siblings, 0 replies; 9+ messages in thread
From: cvs-commit at gcc dot gnu dot org @ 2005-06-04 21:00 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From cvs-commit at gcc dot gnu dot org 2005-06-04 21:00 -------
Subject: Bug 16898
CVSROOT: /cvs/gcc
Module name: gcc
Branch: gcc-4_0-branch
Changes by: tobi@gcc.gnu.org 2005-06-04 20:59:51
Modified files:
gcc/fortran : ChangeLog trans-types.c
gcc/testsuite : ChangeLog
gcc/testsuite/gfortran.dg: ret_pointer_1.f90
Log message:
fortran/
2005-06-04 Zdenek Dvorak <dvorakz@suse.cz>
PR fortran/16898
* trans-types.c (gfc_array_range_type): New variable.
(gfc_init_types): Initialize gfc_array_range_type.
(gfc_get_array_type_bounds): Use gfc_array_range_type.
testsuite/
2005-06-04 Tobias Schl"uter <tobias.schlueter@physik.uni-muenchen.de>
PR fortran/16898
* gfortran.dg/ret_pointer_1.f90: Un-XFAIL.
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/fortran/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.335.2.64&r2=1.335.2.65
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/fortran/trans-types.c.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.37.10.5&r2=1.37.10.6
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.5084.2.226&r2=1.5084.2.227
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gfortran.dg/ret_pointer_1.f90.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.1&r2=1.1.48.1
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16898
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug fortran/16898] Aliasing problem with array descriptors
2004-08-06 14:32 [Bug fortran/16898] New: Aliasing problem with array descriptors pbrook at gcc dot gnu dot org
` (4 preceding siblings ...)
2005-05-18 21:25 ` tobi at gcc dot gnu dot org
@ 2005-06-04 21:00 ` tobi at gcc dot gnu dot org
2005-06-04 21:00 ` cvs-commit at gcc dot gnu dot org
2005-06-04 21:01 ` tobi at gcc dot gnu dot org
7 siblings, 0 replies; 9+ messages in thread
From: tobi at gcc dot gnu dot org @ 2005-06-04 21:00 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From tobi at gcc dot gnu dot org 2005-06-04 21:00 -------
Fixed.
--
What |Removed |Added
----------------------------------------------------------------------------
CC| |tobi at gcc dot gnu dot org
Status|NEW |RESOLVED
Resolution| |FIXED
Target Milestone|--- |4.0.1
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16898
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug fortran/16898] Aliasing problem with array descriptors
2004-08-06 14:32 [Bug fortran/16898] New: Aliasing problem with array descriptors pbrook at gcc dot gnu dot org
` (6 preceding siblings ...)
2005-06-04 21:00 ` cvs-commit at gcc dot gnu dot org
@ 2005-06-04 21:01 ` tobi at gcc dot gnu dot org
7 siblings, 0 replies; 9+ messages in thread
From: tobi at gcc dot gnu dot org @ 2005-06-04 21:01 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From tobi at gcc dot gnu dot org 2005-06-04 21:01 -------
The patch has been on mainline since May 18th.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16898
^ permalink raw reply [flat|nested] 9+ messages in thread
end of thread, other threads:[~2005-06-04 21:01 UTC | newest]
Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed)
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2004-08-06 14:32 [Bug fortran/16898] New: Aliasing problem with array descriptors pbrook at gcc dot gnu dot org
2004-08-07 22:09 ` [Bug fortran/16898] " pinskia at gcc dot gnu dot org
2004-12-10 13:02 ` paulthomas2 at wanadoo dot fr
2004-12-10 13:21 ` pbrook at gcc dot gnu dot org
2005-05-15 17:51 ` aj at gcc dot gnu dot org
2005-05-18 21:25 ` tobi at gcc dot gnu dot org
2005-06-04 21:00 ` tobi at gcc dot gnu dot org
2005-06-04 21:00 ` cvs-commit at gcc dot gnu dot org
2005-06-04 21:01 ` tobi at gcc dot gnu dot org
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