[Bug libgomp/42616] OMP'ed loop inside pthread leads to crash.

[Bug libgomp/42616] OMP'ed loop inside pthread leads to crash.

[vityan at vityan dot sytes.net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42616

Victor K. <vityan at vityan dot sytes.net> changed:

           What    |Removed                     |Added
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                 CC|                            |vityan at vityan dot
                   |                            |sytes.net

--- Comment #8 from Victor K. <vityan at vityan dot sytes.net> 2011-01-05 18:20:35 UTC ---
Testsuite works just fine with MingW-W64(GCC 4.6.0) + WinPthreads:


/mw64src
$ g++ -m32 omp_test.c -o ./omptst.exe -D_OPENMP -lgomp -lpthread

/mw64src
$ ./omptst
OMP : All looks good



/mw64src
$ g++ -m64 -static omp_test.c -o ./omptst64.exe -D_OPENMP -lgomp -lpthread

/mw64src
$ ./omptst64
OMP : All looks good

[Bug libgomp/42616] OMP'ed loop inside pthread leads to crash.

[zlogic at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42616

--- Comment #9 from Dmitri Zolotukhin <zlogic at gmail dot com> 2011-01-05 18:30:46 UTC ---
@Victor K.

Are you using the MinGW or TDM version of GCC?
TDM 4.5.0 passes the test cases on my machine. Seems the problem existed only
in the 4.4.* branch of gcc.

[Bug libgomp/42616] OMP'ed loop inside pthread leads to crash.

[nightstrike at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42616

nightstrike <nightstrike at gmail dot com> changed:

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                 CC|                            |nightstrike at gmail dot
                   |                            |com

--- Comment #10 from nightstrike <nightstrike at gmail dot com> 2011-03-16 17:44:06 UTC ---
Is this using mingw.org based GCC or mingw-w64 based GCC?

[Bug libgomp/42616] OMP'ed loop inside pthread leads to crash.

[gcc.20.cwilson at spamgourmet dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42616

Charles Wilson <gcc.20.cwilson at spamgourmet dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |gcc.20.cwilson at
                   |                            |spamgourmet dot com

--- Comment #11 from Charles Wilson <gcc.20.cwilson at spamgourmet dot com> 2011-05-04 17:48:14 UTC ---
FWIW, using mingw.org's gcc-4.5.2 release, the test passes:

$ g++ -fopenmp omp_test.c -o omp_test -lpthread
$ ./omp_test.exe
OMP : All looks good

Relevant installation data:
gcc-core-4.5.2-1-mingw32-bin
gcc-c++-4.5.2-1-mingw32-bin
libgcc-4.5.2-1-mingw32-dll-1
libstdc++-4.5.2-1-mingw32-dll-6
libgomp-4.5.2-1-mingw32-dll-1
mingwrt-3.18-mingw32-dll
mingwrt-3.18-mingw32-dev
w32api-3.17-2-mingw32-dev
pthreads-w32-2.8.0-3-mingw32-dev
libpthread-2.8.0-3-mingw32-dll-2

I believe this is because TLS support was added to the mingw(32) runtime in
late Jan 2010, thanks to Kai's work:
http://thread.gmane.org/gmane.comp.gnu.mingw.devel/3550

(Although a full compiler suite, and mingw runtime, with TLS support was not
officially released until March 2010)

[Bug libgomp/42616] OMP'ed loop inside pthread leads to crash.

[xunxun1982 at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42616

PcX <xunxun1982 at gmail dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |xunxun1982 at gmail dot com

--- Comment #12 from PcX <xunxun1982 at gmail dot com> 2011-07-10 10:03:48 UTC ---
(In reply to comment #11)
> FWIW, using mingw.org's gcc-4.5.2 release, the test passes:
> 
> $ g++ -fopenmp omp_test.c -o omp_test -lpthread
> $ ./omp_test.exe
> OMP : All looks good
> 
> Relevant installation data:
> gcc-core-4.5.2-1-mingw32-bin
> gcc-c++-4.5.2-1-mingw32-bin
> libgcc-4.5.2-1-mingw32-dll-1
> libstdc++-4.5.2-1-mingw32-dll-6
> libgomp-4.5.2-1-mingw32-dll-1
> mingwrt-3.18-mingw32-dll
> mingwrt-3.18-mingw32-dev
> w32api-3.17-2-mingw32-dev
> pthreads-w32-2.8.0-3-mingw32-dev
> libpthread-2.8.0-3-mingw32-dll-2
> 
> I believe this is because TLS support was added to the mingw(32) runtime in
> late Jan 2010, thanks to Kai's work:
> http://thread.gmane.org/gmane.comp.gnu.mingw.devel/3550
> 
> (Although a full compiler suite, and mingw runtime, with TLS support was not
> officially released until March 2010)

I don't thinks so. 
Because mingw64 crt also contains TLS support written by Kai, but mingw64 crt
also use the code to crash.

[Bug libgomp/42616] OMP'ed loop inside pthread leads to crash.

[varvara.s.rainchik at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=42616

Varvara Rainchik <varvara.s.rainchik at gmail dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |varvara.s.rainchik at gmail dot co
                   |                            |m

--- Comment #13 from Varvara Rainchik <varvara.s.rainchik at gmail dot com> ---
I experience the same problem with Android NDK. TLS is not supported into
Android, so I observe the similar test crash:

[New LWP 18636]

Program received signal SIGSEGV, Segmentation fault.
[Switching to LWP 18636]
(gdb) bt
#0  gomp_icv (write=<optimized out>) at
/s/ndk-toolchain/src/build/../gcc/gcc-4.8/libgomp/libgomp.h:393
#1  0x0804a3d7 in omp_set_num_threads (n=4) at
/s/ndk-toolchain/src/build/../gcc/gcc-4.8/libgomp/env.c:657
#2  0x08049e70 in _thread (Id=0x1) at omp_test.c:19
#3  0x0804d119 in __pthread_start (arg=0x8087270) at
bionic/libc/bionic/pthread_create.cpp:153
#4  0x08055e1a in __start_thread (fn=0x804d0e0 <__pthread_start(void*)>,
arg=0x8087270) at bionic/libc/bionic/clone.cpp:39
#5  0x0806b9b7 in __bionic_clone () at
bionic/libc/arch-x86/bionic/__bionic_clone.S:42

I use android-ndk-r9d for x86 arch, gcc 4.8. Modified patch solves this issue.

[Bug libgomp/42616] OMP'ed loop inside pthread leads to crash.

[varvara.s.rainchik at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=42616

--- Comment #14 from Varvara Rainchik <varvara.s.rainchik at gmail dot com> ---
Created attachment 33130
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33130&action=edit
Modified patch

I will send this patch to gcc patches.

[Bug libgomp/42616] OMP'ed loop inside pthread leads to crash.

[varvara.s.rainchik at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=42616

--- Comment #15 from Varvara Rainchik <varvara.s.rainchik at gmail dot com> ---
Created attachment 33131
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33131&action=edit
Correct patch

[Bug libgomp/42616] OMP'ed loop inside pthread leads to crash.

[java4ada at yahoo dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=42616

java4ada at yahoo dot com changed:

           What    |Removed                     |Added
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                 CC|                            |java4ada at yahoo dot com

--- Comment #16 from java4ada at yahoo dot com ---
Question: There are ~98 calls to gomp_thread() which allocates struct
gomp_thread when HAVE_TLS isn't defined, but only gomp_free_thread() frees this
instance.  Possible memory leak?

[Bug libgomp/42616] OMP'ed loop inside pthread leads to crash.

[java4ada at yahoo dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=42616

--- Comment #17 from java4ada at yahoo dot com ---
Is this fixed by https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=218576
?

[Bug libgomp/42616] OMP'ed loop inside pthread leads to crash.

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=42616

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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           Severity|blocker                     |normal

[Bug libgomp/42616] OMP'ed loop inside pthread leads to crash.

[manu at gcc dot gnu dot org]

------- Comment #7 from manu at gcc dot gnu dot org  2010-06-20 21:25 -------
Patches should be sent to gcc-patches. You may CC the libgomp maintainer
jakub@redhat.com. See also http://gcc.gnu.org/contribute.html


-- 

manu at gcc dot gnu dot org changed:

           What    |Removed                     |Added
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                 CC|                            |manu at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42616

[Bug libgomp/42616] OMP'ed loop inside pthread leads to crash.

[zlogic at gmail dot com]

------- Comment #6 from zlogic at gmail dot com  2010-06-20 14:55 -------
Any news on this?


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42616

[Bug libgomp/42616] OMP'ed loop inside pthread leads to crash.

[jos dot de_laender at telenet dot be]

------- Comment #5 from jos dot de_laender at telenet dot be  2010-01-22 18:24 -------
I drafted a potential patch one can find at 
http://jdlraw.sourceforge.net/GompPatch.shtml


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42616

[Bug libgomp/42616] OMP'ed loop inside pthread leads to crash.

[zlogic at gmail dot com]

------- Comment #4 from zlogic at gmail dot com  2010-01-21 20:06 -------
This bug is also present in the latest TDM (http://www.tdragon.net/recentgcc/)
builds.
Using OpenMP fails when called from pthreads and Windows native threads.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42616

[Bug libgomp/42616] OMP'ed loop inside pthread leads to crash.

[zlogic at gmail dot com]

------- Comment #3 from zlogic at gmail dot com  2010-01-20 22:42 -------
Confirmed, I've encountered this bug in 64-bit Windows 7. I've used Qt Creator
1.3.1 (bundled with gc 4.4.0) for building a project which calls OpenMP
functions from inside a pthread.

If I call OpenMP function from main(), everything works fine.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42616

[Bug libgomp/42616] OMP'ed loop inside pthread leads to crash.

[jos dot de_laender at telenet dot be]

------- Comment #2 from jos dot de_laender at telenet dot be  2010-01-04 20:03 -------
Created an attachment (id=19467)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=19467&action=view)
A GDB output. 


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42616

[Bug libgomp/42616] OMP'ed loop inside pthread leads to crash.

[jos dot de_laender at telenet dot be]

------- Comment #1 from jos dot de_laender at telenet dot be  2010-01-04 20:01 -------
Created an attachment (id=19466)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=19466&action=view)
The test case.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42616