Processing /home/alitrain/train-steer/extract_syswatch.C... *** Break *** segmentation violation E-TFile::TFile: file syswatch.root does not exist =========================================================== There was a crash. This is the entire stack trace of all threads: =========================================================== #0 0x00007f44eb73182e in waitpid () from /lib64/libc.so.6 #1 0x00007f44eb6c3479 in do_system () from /lib64/libc.so.6 #2 0x00007f44ed666f9a in Exec (shellcmd=, this=0x1094590) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/unix/src/TUnixSystem.cxx:2172 #3 TUnixSystem::StackTrace (this=0x1094590) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/unix/src/TUnixSystem.cxx:2419 #4 0x00007f44ed668f6c in TUnixSystem::DispatchSignals (this=0x1094590, sig=kSigSegmentationViolation) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/unix/src/TUnixSystem.cxx:1294 #5 #6 0x00007f44ed4df018 in G__G__Base1_8_0_33 (result7=result7 entry=0x7ffeb06c0200, funcname=funcname entry=0x24e7860 "", libp=libp entry=0x7ffeb06c0240, hash=hash entry=0) at /build/workarea/sw/20155901/1/BUILD/1836d44a77b6c9204176726b9c1c7b11ea5e76d7/ROOT/core/base/G__Base1.cxx:7394 #7 0x00007f44efdb912e in Cint::G__ExceptionWrapper (funcp=funcp entry=0x7f44ed4df000 , result7=result7 entry=0x7ffeb06c0200, funcname=funcname entry=0x24e7860 "", libp=libp entry=0x7ffeb06c0240, hash=hash entry=0) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/Api.cxx:393 #8 0x00007f44efeaead4 in G__execute_call (result7=result7 entry=0x7ffeb06c0200, libp=libp entry=0x7ffeb06c0240, ifunc=ifunc entry=0x24e7860, ifn=ifn entry=0) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/newlink.cxx:2408 #9 0x00007f44efeaee69 in G__call_cppfunc (result7=0x7ffeb06c0200, libp=0x7ffeb06c0240, ifunc=0x24e7860, ifn=) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/newlink.cxx:2612 #10 0x00007f44efe1d411 in G__interpret_func (result7=0x7ffeb06c0200, funcname=0x247ef10 "Get", libp=0x7ffeb06c0240, hash=288, p_ifunc=0x24e7860, funcmatch=1, memfunc_flag=1) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/ifunc.cxx:5791 #11 0x00007f44efdf1435 in G__getfunction (item=0x10b79f7 "Get(\"syswatch\")", known3=, memfunc_flag=) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/func.cxx:2660 #12 0x00007f44efdce34d in G__getstructmem (store_var_type=store_var_type entry=112, varname=..., membername=membername entry=0x10b79f7 "Get(\"syswatch\")", memnamesize=memnamesize entry=2147483647, tagname=tagname entry=0x11e7d80 "gFile", known2=0x7ffeb06cb6e4, varglobal=0x7f44f06c0780 , objptr=2) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/var.cxx:6821 #13 0x00007f44efdc6932 in G__getvariable (item=0x10b79f0 "gFile->Get(\"syswatch\")", known=0x7ffeb06cb6e4, varglobal=0x7f44f06c0780 , varlocal=0x7ffeb06dea10) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/var.cxx:5407 #14 0x00007f44efe920db in G__getitem (item=0x10b79f0 "gFile->Get(\"syswatch\")") at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/expr.cxx:1906 #15 0x00007f44efe988bc in G__getexpr (expression=) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/expr.cxx:1488 #16 0x00007f44efdf0cf2 in G__getfunction (item=0x10b6dc0 "(TTree*)gFile->Get(\"syswatch\")", known3=0x7ffeb06d8a64, memfunc_flag=0) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/func.cxx:2410 #17 0x00007f44efe925a6 in G__getitem (item=0x10b6dc0 "(TTree*)gFile->Get(\"syswatch\")") at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/expr.cxx:1918 #18 0x00007f44efe988bc in G__getexpr (expression=) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/expr.cxx:1488 #19 0x00007f44efe97762 in G__getexpr (expression=) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/expr.cxx:1446 #20 0x00007f44efe3682d in G__exec_statement (mparen=) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/parse.cxx:6980 #21 0x00007f44efe1f029 in G__interpret_func (result7=, funcname=, libp=, hash=, p_ifunc=0x247e2a0, funcmatch=, memfunc_flag=0) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/ifunc.cxx:6710 #22 0x00007f44efdf1499 in G__getfunction (item=0x10a8c50 "extract_syswatch()", known3=, memfunc_flag=) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/func.cxx:2901 #23 0x00007f44efe925a6 in G__getitem (item=0x10a8c50 "extract_syswatch()") at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/expr.cxx:1918 #24 0x00007f44efe988bc in G__getexpr (expression=expression entry=0x247e770 "extract_syswatch()") at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/expr.cxx:1488 #25 0x00007f44efea25c8 in G__calc_internal (exprwithspace=) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/expr.cxx:1071 #26 0x00007f44efe0b827 in G__process_cmd (line=, prompt=, more=, err=0x7ffeb06ed63c, rslt=) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/pause.cxx:2331 #27 0x00007f44ed64522a in TCint::ProcessLine (this=0x1099360, line=0x247d8b0 ".X /home/alitrain/train-steer/extract_syswatch.C", error=0x7ffeb06ee3ec) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/meta/src/TCint.cxx:549 #28 0x00007f44ed640337 in TCint::ProcessLineSynch (this=0x1099360, line=0x247d8b0 ".X /home/alitrain/train-steer/extract_syswatch.C", error=0x7ffeb06ee3ec) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/meta/src/TCint.cxx:631 #29 0x00007f44ed6af14d in TApplication::ExecuteFile (file=, error=0x7ffeb06ee3ec, keep=) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/base/src/TApplication.cxx:1110 #30 0x00007f44ed6b0154 in TApplication::ProcessLine (this=0x1a48fd0, line=, sync=, err=0x7ffeb06ee3ec) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/base/src/TApplication.cxx:959 #31 0x00007f4500fd12d1 in TRint::Run (this=0x1a48fd0, retrn=) at /build/workarea/sw/20155901/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/rint/src/TRint.cxx:417 #32 0x00000000004025a9 in main (argc=1, argv=0x7ffeb06f05d8) at /build/workarea/sw/20155901/1/SOURCES/AliRoot/v5-09-33/v5-09-33/ALIROOT/aliroot.cxx:145 =========================================================== The crash is most likely caused by a problem in your script. Try to compile it (.L myscript.C+g) and fix any errors. If that does not help then please submit a bug report at http://root.cern.ch/bugs. Please post the ENTIRE stack trace from above as an attachment in addition to anything else that might help us fixing this issue. Function extract_syswatch() busy flag cleared