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hi all,
there are problems when i try to read an object from a root
file if the read is performed from shared lib code.
i tried to read a TCanvas from a successfully opened TFile tf
with the following 3 code segments:
1.) TCanvas * c1 = (TCanvas *) tf->GetKey("canvas")->ReadObj();
// works, but only when i loaded the cxx source.
// segfaults when i loaded the rsp. .so library.
2.) TCanvas * c1 = (TCanvas *) tf->Get("canvas");
// works, but only when i loaded the cxx source.
// segfaults when i loaded the rsp. .so library.
3.) TCanvas * c1 = new TCanvas();
c1->Read("canvas");
// works, but only when i loaded the cxx source.
// segfaults when i loaded the rsp. .so library.
i'd be happy about ideas/suggestions/corrections.
tia,
j"org.
PS. i have root-2.21.08 on linux-glibc.
.so was created with
g++ -c -O2 -fPIC -fno-rtti -fno-exceptions
-I/usr/local/root/include bla.C -o bla.o
g++ -c -O2 -fPIC -fno-rtti -fno-exceptions
-I/usr/local/root/include bladict.C -o bladict.o
g++ -Wl,-soname,libbla.so -shared bla.o bladict.o
-o libbla.so
and certainly loaded with
gSystem->Load("libbla.so")
__________________________________________________________________________
dr. j. rieling / daimlerChrysler aerospace, orbital systems & operations
fon +49 421 5395643 fax +49 421 5395127 joerg.rieling@ri.dasa.de
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