Dear Rooters I have compiled my program using root 3.05/02 (and earlier) on MacOS X, and could run it without any problems. Yesterday, I have upgraded to 3.05/04, and now I get a segmentation break. For this reason, I have recompiled my program, but this does not help, either. So, I have decided to compile my test program, which I have already sent to roottalk some time ago, see: http://root.cern.ch/root/roottalk/roottalk03/0464.html When compiling this program, I get the identical compilation messages, and the program gives a segmentation break: [TiBookie:~/ROOT/rootcode/xgui] cs% make -f MakeFile4MyApp c++ -O -pipe -Wall -I/Users/cs/ROOT/root/include -c MyGui.cxx Generating dictionary MyGuiDict.cxx... c++ -O -pipe -Wall -I/Users/cs/ROOT/root/include -c MyGuiDict.cxx c++ -O -Xlinker -bind_at_load -flat_namespace -o MyGui MyGui.o MyGuiDict.o -L/Users/cs/ROOT/root/lib -lCore -lCint -lHist -lGraf -lGraf3d -lGpad -lTree -lRint -lPostscript -lMatrix -lPhysics -lGui -lm -L/sw/lib -ldl ld: warning dynamic shared library: /Users/cs/ROOT/root/lib/libHist.dylib not made a weak library in output with MACOSX_DEPLOYMENT_TARGET environment variable set to: 10.1 ld: warning dynamic shared library: /Users/cs/ROOT/root/lib/libGraf.dylib not made a weak library in output with MACOSX_DEPLOYMENT_TARGET environment variable set to: 10.1 ld: warning dynamic shared library: /Users/cs/ROOT/root/lib/libGpad.dylib not made a weak library in output with MACOSX_DEPLOYMENT_TARGET environment variable set to: 10.1 ld: warning dynamic shared library: /Users/cs/ROOT/root/lib/libMatrix.dylib not made a weak library in output with MACOSX_DEPLOYMENT_TARGET environment variable set to: 10.1 ld: warning dynamic shared library: /sw/lib/libdl.dylib not made a weak library in output with MACOSX_DEPLOYMENT_TARGET environment variable set to: 10.1 MyGui done [TiBookie:~/ROOT/rootcode/xgui] cs% ./MyGui *** Break *** segmentation violation Can you tell me what has changed between 3.05/02 and 3.05/04? What do these messages mean? What can I do to get my program running again? Thank you in advance Best regards Christian _._._._._._._._._._._._._._._._ C.h.i.s.t.i.a.n S.t.r.a.t.o.w.a V.i.e.n.n.a A.u.s.t.r.i.a _._._._._._._._._._._._._._._._
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