Valeri, Fons,
I did check ROOTSYS and PATH environment variables and everything is
according to your indications. I even download Valeri's installation just to
see if there was a problem with mine. Also the changed Root.ShowPath to true
but it didn't help because the crash happens before anything is printed.
Debugging at assembler level I noticed that the access violation occurs in
the method TWinNTSystem::Which() that is called by TSystem::Load() when not
full path given. This method expects a maximum PATH length of 1024 (the
value of kMAXPATHLEN) and unfortunately by PATH was longer than that!!!
Reducing the PATH to less than 1024 it works.
Taking into account the PATH on Windows can be longer than 1024 (DOS limit
is at 2048 I think) I would suggest to change the limit or put better
protection.
Thanks for your hints,
Pere
> -----Original Message-----
> From: owner-roottalk@pcroot.cern.ch
> [mailto:owner-roottalk@pcroot.cern.ch]On Behalf Of Valeri Fine
> Sent: 16 January 2002 18:13
> To: Pere Mato; Roottalk
> Subject: Re: [ROOT] Loading ROOT libraries on Windows
>
>
>
> ----- Original Message -----
> From: "Pere Mato" <Pere.Mato@cern.ch>
> To: "Roottalk" <roottalk@pcroot.cern.ch>
> Sent: Wednesday, January 16, 2002 7:43 AM
> Subject: [ROOT] Loading ROOT libraries on Windows
>
>
> > Hello,
> >
> > I am trying to load standard ROOT libraries within a C++
> module using the
> > method TSystem::Load(). I seems that it works only if I put the
> full path
> > where the library is. If I use only the library name it
> generates an "access
> > violation" even if I have in the PATH the location where the
> libraries are.
> >
> > gSystem->Load("libHist") // Access violation!
> > gSystem->Load("S:/sw/ROOT/v3.01/nt4/root/bin/libHist.dll") // Works!!
> >
>
> What is your environment ? Before asking Windows to load DLL
> ROOT checks the access
> to that library on its own
>
> In this case the path to look up is picked from the
> system.rotor file. The later itself is found under
> %ROOTSYS%/etc. To get the "Windows" behavior the %ROOTSYS%\bin
> should be in your PATH
> and ROOT search path (within ".rootrc" file) should include $PATH.
>
> Anyway first make sure your env variables do match that ?
>
>
> You may want to find system.rootrc and edit it to replace
>
> Root.ShowPath: false
>
> with
>
> Root.ShowPath: true
>
> Then you should get some extra output from ROOT. That may help
> us to sort things out.
> I woiuld recommenr you to install ROOT from
>
> http://www.usatlas.bnl.gov/~fine/downloadRoot.html
>
> This should set your env properly and automatically.
>
> Hope this helps,
>
> Valeri
>
> > Any explanation?
> >
> > Pere
> >
> > ------------------------------------------------------------
> > Pere Mato CERN, EP Division, CH 1211 Geneva 23, Switzerland
> > e-mail: Pere.Mato@cern.ch tel: +41 22 76 78696
> > fax: +41 22 76 79425 gsm: +41 79 20 10855
> >
> >
> >
>
>
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