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 0x00007ff09a06782e in waitpid () from /lib64/libc.so.6 #1 0x00007ff099ff9479 in do_system () from /lib64/libc.so.6 #2 0x00007ff09bf9cf7a in Exec (shellcmd=, this=0x1bb2550) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/core/unix/src/TUnixSystem.cxx:2172 #3 TUnixSystem::StackTrace (this=0x1bb2550) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/core/unix/src/TUnixSystem.cxx:2419 #4 0x00007ff09bf9ef4c in TUnixSystem::DispatchSignals (this=0x1bb2550, sig=kSigSegmentationViolation) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/core/unix/src/TUnixSystem.cxx:1294 #5 #6 0x00007ff09be14d88 in G__G__Base1_8_0_33 (result7=result7 entry=0x7ffc295ccb70, funcname=funcname entry=0x2fb9430 "", libp=libp entry=0x7ffc295ccbb0, hash=hash entry=0) at /build/workarea/sw/20155834/1/BUILD/9025f55a0fb3e87fca82cd93f2be92fd46fde85b/ROOT/core/base/G__Base1.cxx:7394 #7 0x00007ff09e76665e in Cint::G__ExceptionWrapper (funcp=funcp entry=0x7ff09be14d70 , result7=result7 entry=0x7ffc295ccb70, funcname=funcname entry=0x2fb9430 "", libp=libp entry=0x7ffc295ccbb0, hash=hash entry=0) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/cint/cint/src/Api.cxx:393 #8 0x00007ff09e6a7cc4 in G__execute_call (result7=result7 entry=0x7ffc295ccb70, libp=libp entry=0x7ffc295ccbb0, ifunc=ifunc entry=0x2fb9430, ifn=ifn entry=0) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/cint/cint/src/newlink.cxx:2408 #9 0x00007ff09e6a8059 in G__call_cppfunc (result7=0x7ffc295ccb70, libp=0x7ffc295ccbb0, ifunc=0x2fb9430, ifn=) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/cint/cint/src/newlink.cxx:2612 #10 0x00007ff09e794861 in G__interpret_func (result7=0x7ffc295ccb70, funcname=0x2f4a590 "Get", libp=0x7ffc295ccbb0, hash=288, p_ifunc=0x2fb9430, funcmatch=1, memfunc_flag=1) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/cint/cint/src/ifunc.cxx:5791 #11 0x00007ff09e7b57b5 in G__getfunction (item=0x1bd5287 "Get(\"syswatch\")", known3=, memfunc_flag=) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/cint/cint/src/func.cxx:2660 #12 0x00007ff09e71807d in G__getstructmem (store_var_type=store_var_type entry=112, varname=..., membername=membername entry=0x1bd5287 "Get(\"syswatch\")", memnamesize=memnamesize entry=2147483647, tagname=tagname entry=0x1d05610 "gFile", known2=0x7ffc295d8054, varglobal=0x7ff09efb3640 , objptr=2) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/cint/cint/src/var.cxx:6821 #13 0x00007ff09e710662 in G__getvariable (item=0x1bd5280 "gFile->Get(\"syswatch\")", known=0x7ffc295d8054, varglobal=0x7ff09efb3640 , varlocal=0x7ffc295eb380) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/cint/cint/src/var.cxx:5407 #14 0x00007ff09e7c6a3b in G__getitem (item=0x1bd5280 "gFile->Get(\"syswatch\")") at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/cint/cint/src/expr.cxx:1906 #15 0x00007ff09e7cd21c in G__getexpr (expression=) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/cint/cint/src/expr.cxx:1488 #16 0x00007ff09e7b5072 in G__getfunction (item=0x1bd4650 "(TTree*)gFile->Get(\"syswatch\")", known3=0x7ffc295e53d4, memfunc_flag=0) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/cint/cint/src/func.cxx:2410 #17 0x00007ff09e7c6f06 in G__getitem (item=0x1bd4650 "(TTree*)gFile->Get(\"syswatch\")") at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/cint/cint/src/expr.cxx:1918 #18 0x00007ff09e7cd21c in G__getexpr (expression=) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/cint/cint/src/expr.cxx:1488 #19 0x00007ff09e7cc0c2 in G__getexpr (expression=) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/cint/cint/src/expr.cxx:1446 #20 0x00007ff09e6cff3d in G__exec_statement (mparen=) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/cint/cint/src/parse.cxx:6980 #21 0x00007ff09e796479 in G__interpret_func (result7=, funcname=, libp=, hash=, p_ifunc=0x2f49920, funcmatch=, memfunc_flag=0) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/cint/cint/src/ifunc.cxx:6710 #22 0x00007ff09e7b5819 in G__getfunction (item=0x1bc6440 "extract_syswatch()", known3=, memfunc_flag=) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/cint/cint/src/func.cxx:2901 #23 0x00007ff09e7c6f06 in G__getitem (item=0x1bc6440 "extract_syswatch()") at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/cint/cint/src/expr.cxx:1918 #24 0x00007ff09e7cd21c in G__getexpr (expression=expression entry=0x2f49dd0 "extract_syswatch()") at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/cint/cint/src/expr.cxx:1488 #25 0x00007ff09e7d6f28 in G__calc_internal (exprwithspace=) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/cint/cint/src/expr.cxx:1071 #26 0x00007ff09e72bcb7 in G__process_cmd (line=, prompt=, more=, err=0x7ffc295f9fac, rslt=) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/cint/cint/src/pause.cxx:2331 #27 0x00007ff09bf6d08a in TCint::ProcessLine (this=0x1bb7040, line=0x2f48ef0 ".X /home/alitrain/train-steer/extract_syswatch.C", error=0x7ffc295fad5c) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/core/meta/src/TCint.cxx:549 #28 0x00007ff09bf68197 in TCint::ProcessLineSynch (this=0x1bb7040, line=0x2f48ef0 ".X /home/alitrain/train-steer/extract_syswatch.C", error=0x7ffc295fad5c) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/core/meta/src/TCint.cxx:631 #29 0x00007ff09c01209d in TApplication::ExecuteFile (file=, error=0x7ffc295fad5c, keep=) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/core/base/src/TApplication.cxx:1110 #30 0x00007ff09c0130a4 in TApplication::ProcessLine (this=0x255b180, line=, sync=, err=0x7ffc295fad5c) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/core/base/src/TApplication.cxx:959 #31 0x00007ff0af86b2d1 in TRint::Run (this=0x255b180, retrn=) at /build/workarea/sw/20155834/1/SOURCES/ROOT/v5-34-30-alice8/v5-34-30-alice8/core/rint/src/TRint.cxx:417 #32 0x00000000004040c1 in main (argc=1, argv=0x7ffc295fcf48) at /build/workarea/sw/20155839/1/SOURCES/AliRoot/v5-09-21/v5-09-21/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