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* [Bug fortran/54034] New: [4.8 Regression] doduc benchmark from polyhedron 11 segfaults
@ 2012-07-19 16:39 ubizjak at gmail dot com
2012-07-19 16:59 ` [Bug fortran/54034] " ubizjak at gmail dot com
` (7 more replies)
0 siblings, 8 replies; 9+ messages in thread
From: ubizjak at gmail dot com @ 2012-07-19 16:39 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54034
Bug #: 54034
Summary: [4.8 Regression] doduc benchmark from polyhedron 11
segfaults
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: ubizjak@gmail.com
doduc benchmark from Polyhedron 11 benchmark suite segfaults when compile with
-O3 -ffast-math for x86_64-pc-linux-gnu target:
gcc version 4.8.0 20120719 (experimental) [trunk revision 189664] (GCC)
[uros@localhost source]$ ./a.out
MAIN : FIN S00002
MAIN : FIN S00001
MAIN : FIN S00011
MAIN : FIN S00022
TEMPS = 33.00000000 , NITERA : 1
TEMPS = 34.00031044 , NITERA : 186
TEMPS = 35.00497388 , NITERA : 955
TEMPS = 36.00007615 , NITERA : 1512
TEMPS = 37.00012624 , NITERA : 1765
TEMPS = 38.00060760 , NITERA : 2044
TEMPS = 39.00312223 , NITERA : 2327
TEMPS = 40.00168143 , NITERA : 2607
TEMPS = 45.00187475 , NITERA : 4017
TEMPS = 50.00261983 , NITERA : 5492
TEMPS = 55.00263522 , NITERA : 6981
TEMPS = 60.00087007 , NITERA : 8679
Program received signal SIGSEGV: Segmentation fault - invalid memory reference.
Backtrace for this error:
#0 0x7F6627DD0FD7
#1 0x7F6627DD15A4
#2 0x3C02E3599F
#3 0x4040E8 in s00061_ at doduc.f90:568
#4 0x412AD3 in s00013_ at doduc.f90:1150
#5 0x41B9D4 in doduc at doduc.f90:182
The problem is with index to y array:
Program received signal SIGSEGV, Segmentation fault.
s00061 (i=7, hv=0.0050539815561751163, hvt=0, hvme=0, hvms=0,
ynu=4.3611596409392313, re=-nan(0x8000000000000),
tfl=1773.5356631567458, dtfl=-nan(0x8000000000000), iopt=0) at
doduc.f90:568
568 y1 = y(i1)
Missing separate debuginfos, use: debuginfo-install glibc-2.15-51.fc17.x86_64
(gdb) p i1
$1 = -2147483635
(gdb) bt
#0 s00061 (i=7, hv=0.0050539815561751163, hvt=0, hvme=0, hvms=0,
ynu=4.3611596409392313, re=-nan(0x8000000000000),
tfl=1773.5356631567458, dtfl=-nan(0x8000000000000), iopt=0) at
doduc.f90:568
#1 0x0000000000412ad4 in s00013 () at doduc.f90:1150
#2 0x000000000041b9d5 in doduc () at doduc.f90:182
#3 0x0000000000400b4d in main (argc=<optimized out>, argv=<optimized out>) at
doduc.f90:199
#4 0x0000003c02e21735 in __libc_start_main () from /lib64/libc.so.6
#5 0x0000000000400b79 in _start ()
(gdb)
Please also note that a strange runtime regression happened with this benchmark
on 18th of July [1].
[1] http://gcc.opensuse.org/c++bench/polyhedron/polyhedron-summary.txt-2-0.html
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug fortran/54034] [4.8 Regression] doduc benchmark from polyhedron 11 segfaults
2012-07-19 16:39 [Bug fortran/54034] New: [4.8 Regression] doduc benchmark from polyhedron 11 segfaults ubizjak at gmail dot com
@ 2012-07-19 16:59 ` ubizjak at gmail dot com
2012-07-20 9:23 ` janus at gcc dot gnu.org
` (6 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: ubizjak at gmail dot com @ 2012-07-19 16:59 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54034
--- Comment #1 from Uros Bizjak <ubizjak at gmail dot com> 2012-07-19 16:59:37 UTC ---
Created attachment 27834
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27834
doduc benchmark
The source says:
! There is no condition about using this freeware : however
! I would appreciate receiving any new result from you to enrich
! the benchmark report , which is also available freely on request .
So, I have attached the benchmark in all of its glory.
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug fortran/54034] [4.8 Regression] doduc benchmark from polyhedron 11 segfaults
2012-07-19 16:39 [Bug fortran/54034] New: [4.8 Regression] doduc benchmark from polyhedron 11 segfaults ubizjak at gmail dot com
2012-07-19 16:59 ` [Bug fortran/54034] " ubizjak at gmail dot com
@ 2012-07-20 9:23 ` janus at gcc dot gnu.org
2012-07-20 9:34 ` rguenth at gcc dot gnu.org
` (5 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: janus at gcc dot gnu.org @ 2012-07-20 9:23 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54034
janus at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |janus at gcc dot gnu.org
--- Comment #2 from janus at gcc dot gnu.org 2012-07-20 09:23:00 UTC ---
(In reply to comment #0)
> doduc benchmark from Polyhedron 11 benchmark suite segfaults when compile with
> -O3 -ffast-math for x86_64-pc-linux-gnu target:
>
> gcc version 4.8.0 20120719 (experimental) [trunk revision 189664] (GCC)
works for me with:
Target: x86_64-unknown-linux-gnu
gcc version 4.8.0 20120718 (experimental) [trunk revision 189608] (GCC)
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug fortran/54034] [4.8 Regression] doduc benchmark from polyhedron 11 segfaults
2012-07-19 16:39 [Bug fortran/54034] New: [4.8 Regression] doduc benchmark from polyhedron 11 segfaults ubizjak at gmail dot com
2012-07-19 16:59 ` [Bug fortran/54034] " ubizjak at gmail dot com
2012-07-20 9:23 ` janus at gcc dot gnu.org
@ 2012-07-20 9:34 ` rguenth at gcc dot gnu.org
2012-07-20 15:29 ` ubizjak at gmail dot com
` (4 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: rguenth at gcc dot gnu.org @ 2012-07-20 9:34 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54034
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |4.8.0
--- Comment #3 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-07-20 09:34:28 UTC ---
Possibly a dup of 54031?
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug fortran/54034] [4.8 Regression] doduc benchmark from polyhedron 11 segfaults
2012-07-19 16:39 [Bug fortran/54034] New: [4.8 Regression] doduc benchmark from polyhedron 11 segfaults ubizjak at gmail dot com
` (2 preceding siblings ...)
2012-07-20 9:34 ` rguenth at gcc dot gnu.org
@ 2012-07-20 15:29 ` ubizjak at gmail dot com
2012-07-20 19:26 ` dominiq at lps dot ens.fr
` (3 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: ubizjak at gmail dot com @ 2012-07-20 15:29 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54034
--- Comment #4 from Uros Bizjak <ubizjak at gmail dot com> 2012-07-20 15:29:32 UTC ---
(In reply to comment #3)
> Possibly a dup of 54031?
No, still fails with:
gcc version 4.8.0 20120720 (experimental) [trunk revision 189718] (GCC)
Janus, please try to run the executable under valgrind:
==2822== Memcheck, a memory error detector
==2822== Copyright (C) 2002-2011, and GNU GPL'd, by Julian Seward et al.
==2822== Using Valgrind-3.7.0 and LibVEX; rerun with -h for copyright info
==2822== Command: ./a.out
==2822==
MAIN : FIN S00002
MAIN : FIN S00001
MAIN : FIN S00011
MAIN : FIN S00022
TEMPS = 33.00000000 , NITERA : 1
TEMPS = 34.00031044 , NITERA : 186
TEMPS = 35.00497388 , NITERA : 955
TEMPS = 36.00007615 , NITERA : 1512
TEMPS = 37.00012624 , NITERA : 1765
TEMPS = 38.00060760 , NITERA : 2044
TEMPS = 39.00312223 , NITERA : 2327
TEMPS = 40.00168143 , NITERA : 2607
TEMPS = 45.00187475 , NITERA : 4017
TEMPS = 50.00261983 , NITERA : 5492
TEMPS = 55.00263522 , NITERA : 6981
TEMPS = 60.00087007 , NITERA : 8679
==2822== Invalid read of size 8
==2822== at 0x4040E8: s00061_ (doduc.f90:568)
==2822== by 0x412AD3: s00013_ (doduc.f90:1150)
==2822== by 0x41B9D4: MAIN__ (doduc.f90:182)
==2822== by 0x400B4C: main (doduc.f90:199)
==2822== Address 0x3fefff770 is not stack'd, malloc'd or (recently) free'd
==2822==
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug fortran/54034] [4.8 Regression] doduc benchmark from polyhedron 11 segfaults
2012-07-19 16:39 [Bug fortran/54034] New: [4.8 Regression] doduc benchmark from polyhedron 11 segfaults ubizjak at gmail dot com
` (3 preceding siblings ...)
2012-07-20 15:29 ` ubizjak at gmail dot com
@ 2012-07-20 19:26 ` dominiq at lps dot ens.fr
2012-07-20 21:47 ` janus at gcc dot gnu.org
` (2 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: dominiq at lps dot ens.fr @ 2012-07-20 19:26 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54034
--- Comment #5 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2012-07-20 19:26:05 UTC ---
This works for me on x86_64-apple-darwin10 at revision 189718 even when the
executable is run under valgrind. Nevertheless this remind me pr43716 which
disappeared without being explicitely fixed.
If needed, I have the file doduc.f90 exploded in one file per
function/subroutine, just let me know.
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug fortran/54034] [4.8 Regression] doduc benchmark from polyhedron 11 segfaults
2012-07-19 16:39 [Bug fortran/54034] New: [4.8 Regression] doduc benchmark from polyhedron 11 segfaults ubizjak at gmail dot com
` (4 preceding siblings ...)
2012-07-20 19:26 ` dominiq at lps dot ens.fr
@ 2012-07-20 21:47 ` janus at gcc dot gnu.org
2012-07-21 6:33 ` burnus at gcc dot gnu.org
2012-07-21 10:44 ` ubizjak at gmail dot com
7 siblings, 0 replies; 9+ messages in thread
From: janus at gcc dot gnu.org @ 2012-07-20 21:47 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54034
--- Comment #6 from janus at gcc dot gnu.org 2012-07-20 21:47:43 UTC ---
(In reply to comment #4)
> Janus, please try to run the executable under valgrind:
Sorry, I still can not reproduce it. Neither with valgrind, nor at later
revisions (189690,189711).
Did you use any other flags except "-O3 -ffast-math" which you did not tell us?
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug fortran/54034] [4.8 Regression] doduc benchmark from polyhedron 11 segfaults
2012-07-19 16:39 [Bug fortran/54034] New: [4.8 Regression] doduc benchmark from polyhedron 11 segfaults ubizjak at gmail dot com
` (5 preceding siblings ...)
2012-07-20 21:47 ` janus at gcc dot gnu.org
@ 2012-07-21 6:33 ` burnus at gcc dot gnu.org
2012-07-21 10:44 ` ubizjak at gmail dot com
7 siblings, 0 replies; 9+ messages in thread
From: burnus at gcc dot gnu.org @ 2012-07-21 6:33 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54034
Tobias Burnus <burnus at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |burnus at gcc dot gnu.org
--- Comment #7 from Tobias Burnus <burnus at gcc dot gnu.org> 2012-07-21 06:32:48 UTC ---
(In reply to comment #6)
> Sorry, I still can not reproduce it. Neither with valgrind, nor at later
> revisions (189690,189711).
> Did you use any other flags except "-O3 -ffast-math" which you did not tell us?
I can reproduce it here with Rev. 189737; it also crashes without running
valgrind.
It crashes (on x86-64 openSUSE Factory) with
-O3 -ffast-math [-g]
It does not crash with either of the following added:
-fno-fast-math
-fno-inline-functions
-fno-predictive-commoning
-fno-tree-vectorize
-fno-protect-parens (implied by -Ofast)
Nor does it crash with:
-O2 -ftree-vectorize -finline-functions -ffpredictive-commoning -ffast-math
-m32 -O3 -ffast-math
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug fortran/54034] [4.8 Regression] doduc benchmark from polyhedron 11 segfaults
2012-07-19 16:39 [Bug fortran/54034] New: [4.8 Regression] doduc benchmark from polyhedron 11 segfaults ubizjak at gmail dot com
` (6 preceding siblings ...)
2012-07-21 6:33 ` burnus at gcc dot gnu.org
@ 2012-07-21 10:44 ` ubizjak at gmail dot com
7 siblings, 0 replies; 9+ messages in thread
From: ubizjak at gmail dot com @ 2012-07-21 10:44 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54034
Uros Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |DUPLICATE
--- Comment #8 from Uros Bizjak <ubizjak at gmail dot com> 2012-07-21 10:44:26 UTC ---
Dup of pr43716.
*** This bug has been marked as a duplicate of bug 43716 ***
^ permalink raw reply [flat|nested] 9+ messages in thread
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2012-07-19 16:39 [Bug fortran/54034] New: [4.8 Regression] doduc benchmark from polyhedron 11 segfaults ubizjak at gmail dot com
2012-07-19 16:59 ` [Bug fortran/54034] " ubizjak at gmail dot com
2012-07-20 9:23 ` janus at gcc dot gnu.org
2012-07-20 9:34 ` rguenth at gcc dot gnu.org
2012-07-20 15:29 ` ubizjak at gmail dot com
2012-07-20 19:26 ` dominiq at lps dot ens.fr
2012-07-20 21:47 ` janus at gcc dot gnu.org
2012-07-21 6:33 ` burnus at gcc dot gnu.org
2012-07-21 10:44 ` ubizjak at gmail dot com
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