RE: [ROOT] Core dump due to long LD_LIBRARY_PATH

From: Pere Mato Vila (Pere.Mato@cern.ch)
Date: Mon Dec 06 2004 - 18:45:26 MET


Thanks Rene.
By the way. Why it needs to be a limit in the length? Can not a better
solution be found?

		Pere 

> -----Original Message-----
> From: brun@pcbrun.cern.ch [mailto:brun@pcbrun.cern.ch] On 
> Behalf Of Rene Brun
> Sent: 06 December 2004 14:41
> To: Pere Mato Vila
> Cc: roottalk; Fons Rademakers
> Subject: Re: [ROOT] Core dump due to long LD_LIBRARY_PATH
> 
> Hi Pere,
> 
> Your "serious" problem will become a "no" problem if you 
> execute root.exe instead of root.
> 
> The executable in $ROOTSYS/bin/root is a small fron-end 
> showing the splash-screen and launching the main executable root.exe.
> To launch root.exe the front-end has to set the 
> LD_LIBRARY_PATH for root.exe.
> Only 512 chars were allocated for an internal array to build 
> the LD_LIBRARY_PATH. I have extended this array to 4096 in 
> the CVS version.
> The problem is only visible with groups having extremely long 
> LD_LIBRARY_PATH.
> 
> Rene Brun
> 
> Pere Mato Vila wrote:
> > 
> > Dear rooters,
> > 
> >   We have in LHCb serious problems when using "root" within the new 
> > SLC3 platform. ROOT 3.10.02 core dumps at the start with 
> the following
> > traceback:
> > 
> > #0  0x00a5bbac in mempcpy () from /lib/tls/libc.so.6
> > #1  0x00a4f4b2 in _IO_default_xsputn_internal () from 
> > /lib/tls/libc.so.6
> > #2  0x00a28517 in vfprintf () from /lib/tls/libc.so.6
> > #3  0x00a443cc in vsprintf () from /lib/tls/libc.so.6
> > #4  0x00a2f02d in sprintf () from /lib/tls/libc.so.6
> > #5  0x0804931f in SetLibraryPath ()
> > #6  0x080497c9 in main ()
> > 
> >   The reason I think is due to the change in length of the 
> > LD_LIBRARY_PATH due to the change in the platform tag we 
> use in this 
> > new platform. We have changed rh73_gcc3232 to slc3_ia32_gcc323 
> > increasing the total length from 1110 bytes to 1166.
> > 
> > Can this limitation be removed? Or build a protection that 
> it does not 
> > core dump?
> > Thanks in advance,
> > 
> >                                 Pere
> 



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