Dear Root I used TTree.MakeClass (what a nice tool !) to create a Loop on one of my TTrees. It works well on the root file that contained the original TTree. I then chain together 23 files with the same TTree in them. I do newclass t(uDst) and it runs the whole dataset fine but after I am done with the session and type .q it seg. faults. root does not seg fault when I do only the original file. I am running on RedHat Linux I'll attach the chain macro, Chad.C My session is * W E L C O M E to R O O T * * * * Version 3.10/01 8 October 2003 * .x Chad.C .L newclass.C newclass t(uDst) t.Loop() Here is the gdb - root.exe [21] .q Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 16384 (LWP 5347)] 0x08b33ac3 in ?? () (gdb) where #0 0x08b33ac3 in ?? () #1 0x40d6a71c in G__G__Tree_169_5_6(G__value*, char const*, G__param*, int) () from /afs/rhic/star/ROOT/3.10.01/.rh80_gcc32/rootdeb/lib/libTree.so #2 0x40609018 in G__call_cppfunc (result7=0xbfffe2c0, libp=0xbfffae20, ifunc=0x8a2a3e8, ifn=4) at cint/src/newlink.c:508 #3 0x405f4ce4 in G__interpret_func (result7=0xbfffe2c0, funcname=0xbfffdec0 "~TChain", libp=0xbfffae20, hash=693, p_ifunc=0x8a2a3e8, funcmatch=1, memfunc_flag=5) at cint/src/ifunc.c:6502 #4 0x405d41ea in G__getfunction (item=0xbfffe390 "~TChain()", known3=0xbfffe3e8, memfunc_flag=5) at cint/src/func.c:3118 #5 0x4064fa6a in G__destroy_upto (var=0x88ee0c0, global=1, dictpos=0x88ee0c0, ig15=6) at cint/src/scrupto.c:743 #6 0x4064f67f in G__scratch_globals_upto (dictpos=0x856f9c4) at cint/src/scrupto.c:603 #7 0x4018283c in TCint::ResetGlobals() (this=0x856f928) at meta/src/TCint.cxx:387 #8 0x400e601b in TApplication::ProcessLine(char const*, bool, int*) (this=0x85bf470, line=0x40540bc0 ".q", sync=false, err=0x0) at base/src/TApplication.cxx:568 #9 0x40e59ea6 in TRint::HandleTermInput() (this=0x85bf470) at rint/src/TRint.cxx:362 #10 0x40e586bc in TTermInputHandler::Notify() (this=0x891c178) at rint/src/TRint.cxx:101 #11 0x40e5aabe in TTermInputHandler::ReadNotify() (this=0x891c178) at rint/src/TRint.cxx:95 #12 0x401fb590 in TUnixSystem::CheckDescriptors() (this=0x856dbd8) at unix/src/TUnixSystem.cxx:806 #13 0x401fada1 in TUnixSystem::DispatchOneEvent(bool) (this=0x856dbd8, pendingOnly=false) at unix/src/TUnixSystem.cxx:612 #14 0x401496c1 in TSystem::InnerLoop() (this=0x856dbd8) at base/src/TSystem.cxx:303 #15 0x40149645 in TSystem::Run() (this=0x856dbd8) at base/src/TSystem.cxx:271 #16 0x400e6fb5 in TApplication::Run(bool) (this=0x85bf470, retrn=false) at base/src/TApplication.cxx:768 #17 0x40e59920 in TRint::Run(bool) (this=0x85bf470, retrn=false) at rint/src/TRint.cxx:243 #18 0x0804884b in main (argc=1, argv=0xbfffe9a4) at main/src/rmain.cxx:29 #19 0x420158f7 in __libc_start_main () from /lib/i686/libc.so.6 (gdb)
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