No core dump

No core dump

[Krzysztof.Wisniowski]

Hi all,
Recently I had to switch to gcc 3.2.  My program crashes with segmentation
fault, however no core is dumped. Is there some compiler option to force the
system to generate the core file, or is it system feature?

Greetings,
-- 
Krzysztof Wisniowski   | Siemens Sp. z o.o.
ICM SDC NMR 3          | Software Design Center
Phone: +48 71 799 2403 | 54A Strzegomska Str.
Fax: +48 71 799 2320   | 53-611 Wroclaw POLAND

Re: No core dump

[Falk Hueffner]

Krzysztof.Wisniowski@siemens.com writes:

> Recently I had to switch to gcc 3.2.  My program crashes with
> segmentation fault, however no core is dumped. Is there some
> compiler option to force the system to generate the core file, or is
> it system feature?

That's a system feature. Check ulimit, and make sure the current
working directory is writeable.

-- 
	Falk

RE: No core dump

[HOLTZ, CORBIN L. (JSC-ER) (LM)]

I get core dumps all the time under RH9.0.  Most likely you are running the
program from a directory in which you don't have write permissions, OR the
program is changing the current working directory internally (chdir) to a
directory which is write protected.

-----Original Message-----
From: Mihnea Balta [mailto:dark_lkml@mymail.ro]
Sent: Thursday, October 30, 2003 6:55 AM
To: Lev Assinovsky; Claudio Bley
Cc: Krzysztof.Wisniowski@siemens.com; gcc-help@gcc.gnu.org
Subject: Re: No core dump


  It's not the compiler's job to produce a core dump. Redhat disables core 
dump from one of its startup scripts. Just tipe "ulimit -c unlimited" before

running the faulty program.

On Thursday 30 October 2003 14:49, Lev Assinovsky wrote:
> I know for sure that in RedHat 8.x, 9.x gcc doesn't produce core dump.
>
> ----
> Lev Assinovsky
> Aelita Software Corporation
> O&S InTrust Framework Division, Team Leader
> ICQ# 165072909
>
> > -----Original Message-----
> > From: Claudio Bley [mailto:bley@cs.uni-magdeburg.de]
> > Sent: Thursday, October 30, 2003 3:42 PM
> > To: Lev Assinovsky
> > Cc: Krzysztof.Wisniowski@siemens.com; gcc-help@gcc.gnu.org
> > Subject: Re: No core dump
> >
> > On Thu, Oct 30, 2003 at 03:02:50PM +0300, Lev Assinovsky wrote:
> > > If your system is Linux then "no coredump" is a feature.
> > > I heard to fix that you have to recompile the kernel.
> > >
> > > > -----Original Message-----
> > > > From: Krzysztof.Wisniowski@siemens.com
> > > > [mailto:Krzysztof.Wisniowski@siemens.com]
> > > > Sent: Thursday, October 30, 2003 2:55 PM
> > > > To: gcc-help@gcc.gnu.org
> > > > Subject: No core dump
> > > >
> > > >
> > > > Hi all,
> > > > Recently I had to switch to gcc 3.2.  My program crashes with
> > > > segmentation
> > > > fault, however no core is dumped. Is there some compiler
> > > > option to force the
> > > > system to generate the core file, or is it system feature?
> >
> > I think you're talking about a kernel core dump. Normally Linux should
> > support core dumps of normal programs and I don't think there is an
> > option for that, I may be wrong though.
> >
> > You (Krzysztof) should just check your process resource limits which
> > you usually can check and adjust using your shell. E.g. in bash:
> >
> > $ ulimit -c            # print core file size limit
> > 0                      # <- don't generate core dumps
> > $ ulimit -c unlimited  # always generate a core file
> > regardless how big it is
> >
> >
> > If you want to control this from your program, have a look at the
> > getrlimit and setrlimit functions.
> >
> > --
> > Claudio Bley                                 ASCII ribbon campaign (")
> > Debian GNU/Linux user                         - against HTML email  X
> > http://www.cs.uni-magdeburg.de/~bley/                     & vCards / \
>
> ---------------------------------------------------------------
> Acasa.ro vine cu albumele, tu vino doar cu pozele ;)
> http://poze.acasa.ro/

Re: No core dump

[Mihnea Balta]

  It's not the compiler's job to produce a core dump. Redhat disables core 
dump from one of its startup scripts. Just tipe "ulimit -c unlimited" before 
running the faulty program.

On Thursday 30 October 2003 14:49, Lev Assinovsky wrote:
> I know for sure that in RedHat 8.x, 9.x gcc doesn't produce core dump.
>
> ----
> Lev Assinovsky
> Aelita Software Corporation
> O&S InTrust Framework Division, Team Leader
> ICQ# 165072909
>
> > -----Original Message-----
> > From: Claudio Bley [mailto:bley@cs.uni-magdeburg.de]
> > Sent: Thursday, October 30, 2003 3:42 PM
> > To: Lev Assinovsky
> > Cc: Krzysztof.Wisniowski@siemens.com; gcc-help@gcc.gnu.org
> > Subject: Re: No core dump
> >
> > On Thu, Oct 30, 2003 at 03:02:50PM +0300, Lev Assinovsky wrote:
> > > If your system is Linux then "no coredump" is a feature.
> > > I heard to fix that you have to recompile the kernel.
> > >
> > > > -----Original Message-----
> > > > From: Krzysztof.Wisniowski@siemens.com
> > > > [mailto:Krzysztof.Wisniowski@siemens.com]
> > > > Sent: Thursday, October 30, 2003 2:55 PM
> > > > To: gcc-help@gcc.gnu.org
> > > > Subject: No core dump
> > > >
> > > >
> > > > Hi all,
> > > > Recently I had to switch to gcc 3.2.  My program crashes with
> > > > segmentation
> > > > fault, however no core is dumped. Is there some compiler
> > > > option to force the
> > > > system to generate the core file, or is it system feature?
> >
> > I think you're talking about a kernel core dump. Normally Linux should
> > support core dumps of normal programs and I don't think there is an
> > option for that, I may be wrong though.
> >
> > You (Krzysztof) should just check your process resource limits which
> > you usually can check and adjust using your shell. E.g. in bash:
> >
> > $ ulimit -c            # print core file size limit
> > 0                      # <- don't generate core dumps
> > $ ulimit -c unlimited  # always generate a core file
> > regardless how big it is
> >
> >
> > If you want to control this from your program, have a look at the
> > getrlimit and setrlimit functions.
> >
> > --
> > Claudio Bley                                 ASCII ribbon campaign (")
> > Debian GNU/Linux user                         - against HTML email  X
> > http://www.cs.uni-magdeburg.de/~bley/                     & vCards / \
>
> ---------------------------------------------------------------
> Acasa.ro vine cu albumele, tu vino doar cu pozele ;)
> http://poze.acasa.ro/

RE: No core dump

[Lev Assinovsky]

I know for sure that in RedHat 8.x, 9.x gcc doesn't produce core dump.

----
Lev Assinovsky
Aelita Software Corporation
O&S InTrust Framework Division, Team Leader
ICQ# 165072909


> -----Original Message-----
> From: Claudio Bley [mailto:bley@cs.uni-magdeburg.de]
> Sent: Thursday, October 30, 2003 3:42 PM
> To: Lev Assinovsky
> Cc: Krzysztof.Wisniowski@siemens.com; gcc-help@gcc.gnu.org
> Subject: Re: No core dump
> 
> 
> On Thu, Oct 30, 2003 at 03:02:50PM +0300, Lev Assinovsky wrote:
> > If your system is Linux then "no coredump" is a feature.
> > I heard to fix that you have to recompile the kernel.
> > 
> > > -----Original Message-----
> > > From: Krzysztof.Wisniowski@siemens.com
> > > [mailto:Krzysztof.Wisniowski@siemens.com]
> > > Sent: Thursday, October 30, 2003 2:55 PM
> > > To: gcc-help@gcc.gnu.org
> > > Subject: No core dump
> > > 
> > > 
> > > Hi all,
> > > Recently I had to switch to gcc 3.2.  My program crashes with 
> > > segmentation
> > > fault, however no core is dumped. Is there some compiler 
> > > option to force the
> > > system to generate the core file, or is it system feature?
> 
> I think you're talking about a kernel core dump. Normally Linux should
> support core dumps of normal programs and I don't think there is an
> option for that, I may be wrong though. 
> 
> You (Krzysztof) should just check your process resource limits which
> you usually can check and adjust using your shell. E.g. in bash:
> 
> $ ulimit -c            # print core file size limit
> 0                      # <- don't generate core dumps
> $ ulimit -c unlimited  # always generate a core file 
> regardless how big it is
> 
> 
> If you want to control this from your program, have a look at the
> getrlimit and setrlimit functions.
> 
> -- 
> Claudio Bley                                 ASCII ribbon campaign (")
> Debian GNU/Linux user                         - against HTML email  X 
> http://www.cs.uni-magdeburg.de/~bley/                     & vCards / \
> 

Re: No core dump

[Claudio Bley]

On Thu, Oct 30, 2003 at 03:02:50PM +0300, Lev Assinovsky wrote:
> If your system is Linux then "no coredump" is a feature.
> I heard to fix that you have to recompile the kernel.
> 
> > -----Original Message-----
> > From: Krzysztof.Wisniowski@siemens.com
> > [mailto:Krzysztof.Wisniowski@siemens.com]
> > Sent: Thursday, October 30, 2003 2:55 PM
> > To: gcc-help@gcc.gnu.org
> > Subject: No core dump
> > 
> > 
> > Hi all,
> > Recently I had to switch to gcc 3.2.  My program crashes with 
> > segmentation
> > fault, however no core is dumped. Is there some compiler 
> > option to force the
> > system to generate the core file, or is it system feature?

I think you're talking about a kernel core dump. Normally Linux should
support core dumps of normal programs and I don't think there is an
option for that, I may be wrong though. 

You (Krzysztof) should just check your process resource limits which
you usually can check and adjust using your shell. E.g. in bash:

$ ulimit -c            # print core file size limit
0                      # <- don't generate core dumps
$ ulimit -c unlimited  # always generate a core file regardless how big it is


If you want to control this from your program, have a look at the
getrlimit and setrlimit functions.

-- 
Claudio Bley                                 ASCII ribbon campaign (")
Debian GNU/Linux user                         - against HTML email  X 
http://www.cs.uni-magdeburg.de/~bley/                     & vCards / \

Re: No core dump

[Eljay Love-Jensen]

Also, on top of what Segher said, make sure you haven't done this:
touch core
chmod 000 core

--Eljay

RE: No core dump

[Ajay Bansal]

I beg to differ.
Giving command before running your executable enables core

ulimit -c unlimited 


-----Original Message-----
From: Lev Assinovsky [mailto:LAssinovsky@algorithm.aelita.com] 
Sent: Thursday, October 30, 2003 5:33 PM
To: Krzysztof.Wisniowski@siemens.com; gcc-help@gcc.gnu.org

If your system is Linux then "no coredump" is a feature.
I heard to fix that you have to recompile the kernel.

----
Lev Assinovsky
Aelita Software Corporation
O&S InTrust Framework Division, Team Leader ICQ# 165072909


> -----Original Message-----
> From: Krzysztof.Wisniowski@siemens.com 
> [mailto:Krzysztof.Wisniowski@siemens.com]
> Sent: Thursday, October 30, 2003 2:55 PM
> To: gcc-help@gcc.gnu.org
> Subject: No core dump
> 
> 
> Hi all,
> Recently I had to switch to gcc 3.2.  My program crashes with 
> segmentation fault, however no core is dumped. Is there some compiler 
> option to force the system to generate the core file, or is it system 
> feature?
> 
> Greetings,
> -- 
> Krzysztof Wisniowski   | Siemens Sp. z o.o.
> ICM SDC NMR 3          | Software Design Center
> Phone: +48 71 799 2403 | 54A Strzegomska Str.
> Fax: +48 71 799 2320   | 53-611 Wroclaw POLAND
> 
> 

Re: No core dump

[Segher Boessenkool]

Lev Assinovsky wrote:
[ Charset Windows-1251 unsupported, converting... ]
> If your system is Linux then "no coredump" is a feature.
> I heard to fix that you have to recompile the kernel.

Try   ulimit -c unlimited   instead.  And this is off-topic.


Segher

RE: No core dump

[Lev Assinovsky]

If your system is Linux then "no coredump" is a feature.
I heard to fix that you have to recompile the kernel.

----
Lev Assinovsky
Aelita Software Corporation
O&S InTrust Framework Division, Team Leader
ICQ# 165072909


> -----Original Message-----
> From: Krzysztof.Wisniowski@siemens.com
> [mailto:Krzysztof.Wisniowski@siemens.com]
> Sent: Thursday, October 30, 2003 2:55 PM
> To: gcc-help@gcc.gnu.org
> Subject: No core dump
> 
> 
> Hi all,
> Recently I had to switch to gcc 3.2.  My program crashes with 
> segmentation
> fault, however no core is dumped. Is there some compiler 
> option to force the
> system to generate the core file, or is it system feature?
> 
> Greetings,
> -- 
> Krzysztof Wisniowski   | Siemens Sp. z o.o.
> ICM SDC NMR 3          | Software Design Center
> Phone: +48 71 799 2403 | 54A Strzegomska Str.
> Fax: +48 71 799 2320   | 53-611 Wroclaw POLAND
> 
>