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* [Bug libfortran/31604] New: Segfault at runtime on I/O to preconnected unit with OpenMP
@ 2007-04-17 12:59 fxcoudert at gcc dot gnu dot org
2007-04-17 13:03 ` [Bug libfortran/31604] Segfault at runtime on I/O with OpenMP and static linking fxcoudert at gcc dot gnu dot org
` (7 more replies)
0 siblings, 8 replies; 9+ messages in thread
From: fxcoudert at gcc dot gnu dot org @ 2007-04-17 12:59 UTC (permalink / raw)
To: gcc-bugs
$ cat hello.f90
integer :: tid
!$omp parallel private(tid)
tid = 0
if (tid .eq. 0) write(*,*) 'hello'
!$omp end parallel
end
$ gfortran -fopenmp hello.f90 -g -static
$ ./a.out
zsh: segmentation fault ./a.out
It appears to be due to the combination of
(i) spawning a thread
(ii) writing to a preconnected unit
(iii) having a statically linked binary
If you remove any of these three, it works fine.
--
Summary: Segfault at runtime on I/O to preconnected unit with
OpenMP
Product: gcc
Version: 4.3.0
Status: UNCONFIRMED
Keywords: wrong-code
Severity: normal
Priority: P3
Component: libfortran
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: fxcoudert at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31604
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug libfortran/31604] Segfault at runtime on I/O with OpenMP and static linking
2007-04-17 12:59 [Bug libfortran/31604] New: Segfault at runtime on I/O to preconnected unit with OpenMP fxcoudert at gcc dot gnu dot org
@ 2007-04-17 13:03 ` fxcoudert at gcc dot gnu dot org
2007-04-17 14:44 ` pinskia at gcc dot gnu dot org
` (6 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: fxcoudert at gcc dot gnu dot org @ 2007-04-17 13:03 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from fxcoudert at gcc dot gnu dot org 2007-04-17 14:03 -------
It also fails with non-preconnected unit, if the unit is opened outside the
parallel region:
$ cat hello.f90
integer :: tid
open (10, file="foo")
!$omp parallel private(tid)
tid = 0
if (tid .eq. 0) write(10,*) 'hello'
!$omp end parallel
end
$ gfortran -fopenmp hello.f90 -g -static && ./a.out
zsh: segmentation fault ./a.out
--
fxcoudert at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Last reconfirmed|0000-00-00 00:00:00 |2007-04-17 14:03:13
date| |
Summary|Segfault at runtime on I/O |Segfault at runtime on I/O
|to preconnected unit with |with OpenMP and static
|OpenMP |linking
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31604
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug libfortran/31604] Segfault at runtime on I/O with OpenMP and static linking
2007-04-17 12:59 [Bug libfortran/31604] New: Segfault at runtime on I/O to preconnected unit with OpenMP fxcoudert at gcc dot gnu dot org
2007-04-17 13:03 ` [Bug libfortran/31604] Segfault at runtime on I/O with OpenMP and static linking fxcoudert at gcc dot gnu dot org
@ 2007-04-17 14:44 ` pinskia at gcc dot gnu dot org
2007-04-17 14:56 ` fxcoudert at gcc dot gnu dot org
` (5 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2007-04-17 14:44 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from pinskia at gcc dot gnu dot org 2007-04-17 15:43 -------
> (iii) having a statically linked binary
Can you check that the pthread functions are being resolved?
Also do you have a libc which crashes for static linked TLS?
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |WAITING
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31604
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug libfortran/31604] Segfault at runtime on I/O with OpenMP and static linking
2007-04-17 12:59 [Bug libfortran/31604] New: Segfault at runtime on I/O to preconnected unit with OpenMP fxcoudert at gcc dot gnu dot org
2007-04-17 13:03 ` [Bug libfortran/31604] Segfault at runtime on I/O with OpenMP and static linking fxcoudert at gcc dot gnu dot org
2007-04-17 14:44 ` pinskia at gcc dot gnu dot org
@ 2007-04-17 14:56 ` fxcoudert at gcc dot gnu dot org
2007-04-17 15:00 ` pinskia at gcc dot gnu dot org
` (4 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: fxcoudert at gcc dot gnu dot org @ 2007-04-17 14:56 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from fxcoudert at gcc dot gnu dot org 2007-04-17 15:56 -------
(In reply to comment #2)
> Can you check that the pthread functions are being resolved?
> Also do you have a libc which crashes for static linked TLS?
How do I know the answer to those two questions? I have a glibc-2.4 from redhat
(the Fedora Core 4 one).
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31604
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug libfortran/31604] Segfault at runtime on I/O with OpenMP and static linking
2007-04-17 12:59 [Bug libfortran/31604] New: Segfault at runtime on I/O to preconnected unit with OpenMP fxcoudert at gcc dot gnu dot org
` (2 preceding siblings ...)
2007-04-17 14:56 ` fxcoudert at gcc dot gnu dot org
@ 2007-04-17 15:00 ` pinskia at gcc dot gnu dot org
2007-04-17 15:05 ` fxcoudert at gcc dot gnu dot org
` (3 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2007-04-17 15:00 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from pinskia at gcc dot gnu dot org 2007-04-17 15:59 -------
You check where the segfault is happening.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31604
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug libfortran/31604] Segfault at runtime on I/O with OpenMP and static linking
2007-04-17 12:59 [Bug libfortran/31604] New: Segfault at runtime on I/O to preconnected unit with OpenMP fxcoudert at gcc dot gnu dot org
` (3 preceding siblings ...)
2007-04-17 15:00 ` pinskia at gcc dot gnu dot org
@ 2007-04-17 15:05 ` fxcoudert at gcc dot gnu dot org
2007-04-17 15:23 ` pinskia at gcc dot gnu dot org
` (2 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: fxcoudert at gcc dot gnu dot org @ 2007-04-17 15:05 UTC (permalink / raw)
To: gcc-bugs
------- Comment #5 from fxcoudert at gcc dot gnu dot org 2007-04-17 16:05 -------
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 140130416 (LWP 25328)]
0x00000000 in ?? ()
(gdb) where
#0 0x00000000 in ?? ()
#1 0x0804cdbb in get_external_unit (n=6, do_create=1)
at
/home/fxcoudert/gfortran_nightbuild/trunk/libgfortran/../gcc/gthr-posix.h:613
#2 0x0804b987 in data_transfer_init (dtp=0xbfe9b024, read_flag=0)
at /home/fxcoudert/gfortran_nightbuild/trunk/libgfortran/io/transfer.c:1702
#3 0x0804827f in MAIN__.omp_fn.0 (.omp_data_i=0x0) at hello.f90:2
#4 0x08048235 in MAIN__ () at hello.f90:2
#5 0x080482dd in main (argc=Cannot access memory at address 0x1
The line 613 in gcc/gthr-posix.h is the call to pthread_mutex_trylock() in:
static inline int
__gthread_mutex_trylock (__gthread_mutex_t *mutex)
{
if (__gthread_active_p ())
return __gthrw_(pthread_mutex_trylock) (mutex);
else
return 0;
}
--
fxcoudert at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed|2007-04-17 15:56:53 |2007-04-17 16:05:21
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31604
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug libfortran/31604] Segfault at runtime on I/O with OpenMP and static linking
2007-04-17 12:59 [Bug libfortran/31604] New: Segfault at runtime on I/O to preconnected unit with OpenMP fxcoudert at gcc dot gnu dot org
` (4 preceding siblings ...)
2007-04-17 15:05 ` fxcoudert at gcc dot gnu dot org
@ 2007-04-17 15:23 ` pinskia at gcc dot gnu dot org
2007-04-18 10:14 ` dfranke at gcc dot gnu dot org
2007-04-18 17:47 ` fxcoudert at gcc dot gnu dot org
7 siblings, 0 replies; 9+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2007-04-17 15:23 UTC (permalink / raw)
To: gcc-bugs
------- Comment #6 from pinskia at gcc dot gnu dot org 2007-04-17 16:23 -------
So pthreads is not linking in correctly. This was a known issue I thought and
maybe in a way a non issue.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31604
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug libfortran/31604] Segfault at runtime on I/O with OpenMP and static linking
2007-04-17 12:59 [Bug libfortran/31604] New: Segfault at runtime on I/O to preconnected unit with OpenMP fxcoudert at gcc dot gnu dot org
` (5 preceding siblings ...)
2007-04-17 15:23 ` pinskia at gcc dot gnu dot org
@ 2007-04-18 10:14 ` dfranke at gcc dot gnu dot org
2007-04-18 17:47 ` fxcoudert at gcc dot gnu dot org
7 siblings, 0 replies; 9+ messages in thread
From: dfranke at gcc dot gnu dot org @ 2007-04-18 10:14 UTC (permalink / raw)
To: gcc-bugs
------- Comment #7 from dfranke at gcc dot gnu dot org 2007-04-18 11:14 -------
See also: PR30471, PR30613 and PR31400 :)
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31604
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug libfortran/31604] Segfault at runtime on I/O with OpenMP and static linking
2007-04-17 12:59 [Bug libfortran/31604] New: Segfault at runtime on I/O to preconnected unit with OpenMP fxcoudert at gcc dot gnu dot org
` (6 preceding siblings ...)
2007-04-18 10:14 ` dfranke at gcc dot gnu dot org
@ 2007-04-18 17:47 ` fxcoudert at gcc dot gnu dot org
7 siblings, 0 replies; 9+ messages in thread
From: fxcoudert at gcc dot gnu dot org @ 2007-04-18 17:47 UTC (permalink / raw)
To: gcc-bugs
------- Comment #8 from fxcoudert at gcc dot gnu dot org 2007-04-18 18:47 -------
*** This bug has been marked as a duplicate of 30471 ***
--
fxcoudert at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Resolution| |DUPLICATE
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31604
^ permalink raw reply [flat|nested] 9+ messages in thread
end of thread, other threads:[~2007-04-18 17:47 UTC | newest]
Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed)
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2007-04-17 12:59 [Bug libfortran/31604] New: Segfault at runtime on I/O to preconnected unit with OpenMP fxcoudert at gcc dot gnu dot org
2007-04-17 13:03 ` [Bug libfortran/31604] Segfault at runtime on I/O with OpenMP and static linking fxcoudert at gcc dot gnu dot org
2007-04-17 14:44 ` pinskia at gcc dot gnu dot org
2007-04-17 14:56 ` fxcoudert at gcc dot gnu dot org
2007-04-17 15:00 ` pinskia at gcc dot gnu dot org
2007-04-17 15:05 ` fxcoudert at gcc dot gnu dot org
2007-04-17 15:23 ` pinskia at gcc dot gnu dot org
2007-04-18 10:14 ` dfranke at gcc dot gnu dot org
2007-04-18 17:47 ` fxcoudert at gcc dot gnu dot org
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