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 0x00007fde22dd782e in waitpid () from /lib64/libc.so.6 #1 0x00007fde22d69479 in do_system () from /lib64/libc.so.6 #2 0x00007fde24d0cf9a in Exec (shellcmd=, this=0x1260590) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/unix/src/TUnixSystem.cxx:2172 #3 TUnixSystem::StackTrace (this=0x1260590) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/unix/src/TUnixSystem.cxx:2419 #4 0x00007fde24d0ef6c in TUnixSystem::DispatchSignals (this=0x1260590, sig=kSigSegmentationViolation) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/unix/src/TUnixSystem.cxx:1294 #5 #6 0x00007fde24b85018 in G__G__Base1_8_0_33 (result7=result7 entry=0x7fffc93b2a60, funcname=funcname entry=0x26c04d0 "", libp=libp entry=0x7fffc93b2aa0, hash=hash entry=0) at /build/workarea/sw/20155909/1/BUILD/6e5ed1cd2caa32a01c6ce5bee5f7739d356af4c2/ROOT/core/base/G__Base1.cxx:7394 #7 0x00007fde2746412e in Cint::G__ExceptionWrapper (funcp=funcp entry=0x7fde24b85000 , result7=result7 entry=0x7fffc93b2a60, funcname=funcname entry=0x26c04d0 "", libp=libp entry=0x7fffc93b2aa0, hash=hash entry=0) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/Api.cxx:393 #8 0x00007fde27559ad4 in G__execute_call (result7=result7 entry=0x7fffc93b2a60, libp=libp entry=0x7fffc93b2aa0, ifunc=ifunc entry=0x26c04d0, ifn=ifn entry=0) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/newlink.cxx:2408 #9 0x00007fde27559e69 in G__call_cppfunc (result7=0x7fffc93b2a60, libp=0x7fffc93b2aa0, ifunc=0x26c04d0, ifn=) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/newlink.cxx:2612 #10 0x00007fde274c8411 in G__interpret_func (result7=0x7fffc93b2a60, funcname=0x26580c0 "Get", libp=0x7fffc93b2aa0, hash=288, p_ifunc=0x26c04d0, funcmatch=1, memfunc_flag=1) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/ifunc.cxx:5791 #11 0x00007fde2749c435 in G__getfunction (item=0x12839d7 "Get(\"syswatch\")", known3=, memfunc_flag=) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/func.cxx:2660 #12 0x00007fde2747934d in G__getstructmem (store_var_type=store_var_type entry=112, varname=..., membername=membername entry=0x12839d7 "Get(\"syswatch\")", memnamesize=memnamesize entry=2147483647, tagname=tagname entry=0x13b3d60 "gFile", known2=0x7fffc93bdf44, varglobal=0x7fde27d6b780 , objptr=2) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/var.cxx:6821 #13 0x00007fde27471932 in G__getvariable (item=0x12839d0 "gFile->Get(\"syswatch\")", known=0x7fffc93bdf44, varglobal=0x7fde27d6b780 , varlocal=0x7fffc93d1270) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/var.cxx:5407 #14 0x00007fde2753d0db in G__getitem (item=0x12839d0 "gFile->Get(\"syswatch\")") at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/expr.cxx:1906 #15 0x00007fde275438bc in G__getexpr (expression=) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/expr.cxx:1488 #16 0x00007fde2749bcf2 in G__getfunction (item=0x1282da0 "(TTree*)gFile->Get(\"syswatch\")", known3=0x7fffc93cb2c4, memfunc_flag=0) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/func.cxx:2410 #17 0x00007fde2753d5a6 in G__getitem (item=0x1282da0 "(TTree*)gFile->Get(\"syswatch\")") at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/expr.cxx:1918 #18 0x00007fde275438bc in G__getexpr (expression=) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/expr.cxx:1488 #19 0x00007fde27542762 in G__getexpr (expression=) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/expr.cxx:1446 #20 0x00007fde274e182d in G__exec_statement (mparen=) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/parse.cxx:6980 #21 0x00007fde274ca029 in G__interpret_func (result7=, funcname=, libp=, hash=, p_ifunc=0x2657450, funcmatch=, memfunc_flag=0) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/ifunc.cxx:6710 #22 0x00007fde2749c499 in G__getfunction (item=0x1274c50 "extract_syswatch()", known3=, memfunc_flag=) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/func.cxx:2901 #23 0x00007fde2753d5a6 in G__getitem (item=0x1274c50 "extract_syswatch()") at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/expr.cxx:1918 #24 0x00007fde275438bc in G__getexpr (expression=expression entry=0x2657920 "extract_syswatch()") at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/expr.cxx:1488 #25 0x00007fde2754d5c8 in G__calc_internal (exprwithspace=) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/expr.cxx:1071 #26 0x00007fde274b6827 in G__process_cmd (line=, prompt=, more=, err=0x7fffc93dfe9c, rslt=) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/cint/cint/src/pause.cxx:2331 #27 0x00007fde24ceb22a in TCint::ProcessLine (this=0x12652d0, line=0x2656a20 ".X /home/alitrain/train-steer/extract_syswatch.C", error=0x7fffc93e0c4c) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/meta/src/TCint.cxx:549 #28 0x00007fde24ce6337 in TCint::ProcessLineSynch (this=0x12652d0, line=0x2656a20 ".X /home/alitrain/train-steer/extract_syswatch.C", error=0x7fffc93e0c4c) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/meta/src/TCint.cxx:631 #29 0x00007fde24d5514d in TApplication::ExecuteFile (file=, error=0x7fffc93e0c4c, keep=) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/base/src/TApplication.cxx:1110 #30 0x00007fde24d56154 in TApplication::ProcessLine (this=0x1c14910, line=, sync=, err=0x7fffc93e0c4c) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/base/src/TApplication.cxx:959 #31 0x00007fde3867e2d1 in TRint::Run (this=0x1c14910, retrn=) at /build/workarea/sw/20155909/1/SOURCES/ROOT/v5-34-30-alice10/v5-34-30-alice10/core/rint/src/TRint.cxx:417 #32 0x00000000004025a9 in main (argc=1, argv=0x7fffc93e2e38) at /build/workarea/sw/20155914/1/SOURCES/AliRoot/v5-09-35/v5-09-35/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