I'm having the exact same problem that Brian was having (read below) and I
wanted to find out if anyone managed to find a work around (Brian says that
he did not).
I'm running Root 3.05/03 on MacOSX 10.2.6 with the latest developer tools
including gcc3 -- and the newest version of dlcompat.
I created a simplified version of the problem (which works just fine when
run with the interpreter).
http://darkwing.uoregon.edu/~jearly/HEP/
The example program 'treesimple' compiles and runs just fine. It creates a
tree and writes it to a root file without a hitch. The example program
'treeread' compiles just fine but then spits out the same error message
Brian was getting when reading the file.
I tried Rene's suggestion but that didn't change anything -- same results.
Any other ideas?
Thanks for any help,
Jeffrey
> Hi Brian,
>
> This looks like a dynamic loading problem on MacOS.
> To see if this is the case, add in your main program
>
> #include <TApplication.h>
>
>
> int main(int argc, char **argv)
> {
> TApplication theApp("App", &argc, argv);
> .. your own code
> ..
> }
>
> Rene Brun
>
> On Fri, 14 Feb 2003,
> Brian Kurt Fujikawa wrote:
>
>> Hello
>>
>> I'm running root v3.04.02 (source installation) on MacOSX 10.2.3 (X Public
>> Beta 0.2). I am having trouble running a standalone program that loads
>> trees. Specifically, my program includes the lines:
>>
>> TFile* EventFile=
>> new TFile("/Users/bkf/emiT/data/Data1_20021209_15477.root");
>> TTree* CoincidenceEventTree=
>> (TTree*)EventFile->Get("Event/CoincidenceEventTree");
>> TBranch* CoincidenceEventBranch=
>> CoincidenceEventTree->GetBranch("CoincidenceEventBranch");
>>
>> and when I run it, I get the following error messages:
>>
>> Warning in <TClass::TClass>: no dictionary for class TTree is available
>> Warning in <TClass::TClass>: no dictionary for class TBranchElement is
>> available
>> Warning in <TClass::TClass>: no dictionary for class TBranch is available
>> Warning in <TClass::TClass>: no dictionary for class TLeafElement is
>> available
>> Warning in <TClass::TClass>: no dictionary for class TLeaf is available
>> Error in <TBuffer::CheckByteCount>: object of class TNamed read too few
>> bytes: 26 instead of 821615
>> Warning in <TBuffer::CheckByteCount>: TNamed::Streamer() not in sync with
>> data on file, fix Streamer()
>>
>> *** Break *** bus error
>> Abort
>>
>>
>> This programs DOES run when I execute it as a script in root and it also
>> runs on a linux box.
>>
>> I am using the following commands to build this program ("myprog"):
>>
>> g++ -O -Wall -pipe -I/Users/bkf/include/DAT/ -I/Users/bkf/root/include -c
>> myprog.cc
>> g++ -O -Xlinker -bind_at_load -flat_namespace -o myprog myprog.o
>> -L/Users/bkf/lib/ -lDATEvent -L/Users/bkf/root/lib -lCore -lCint -lHist
>> -lGraf -lGraf3d -lGpad -lTree -lRint -lPostscript -lMatrix -lPhysics -lm
>> -ldl
>>
>> Any ideas?
>>
>> Best Regards
>>
>> Brian
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