Hi Axel,
I know that this difference between the stacktrace and gdb stack is
often annoying.
I assume that Fons will look into this problem once he will be back
from holidays.
Rene Brun
On Tue,
22 Jul 2003, Axel Naumann wrote:
> Hi,
>
> an update:
>
> > 1) I get a crash in the line
> > f = new
> > TFile("$SRT_PRIVATE_CONTEXT/d0root_analysis/read_event/MBresolutionFunction_p13.root","read");
> > (within an Aclic compiled script)
>
> Gone. Rebuilding the library did it :-/
>
> Now I'm left with the two stack trace problems - which are really not that
> important.
>
> Axel.
>
> > 2) the stack trace problem: Since a while (about 4 weeks, might be
> > longer) I somtimes don't get a stack trace, instead root just hangs
> > printing
> > *** Break *** segmentation violation
> > Generating stack trace...
> > as its last words. As you can see from the (gdb) stacktrace it seems to
> > wait for some signal which never arrives. Any idea how that can happen?
> > Is there something that I can do to help debug this?
> >
> > 3) If I do get a stack trace then c++filt seems unhappy with the
> > binaries' gcc3 format. How can I teach it gnu-new-abi? nm points to
> > where gcc is, and running e.g. the command
> > "/fnal/ups/prd/gcc/Linux-2-4/v3_2_1/bin/addr2line -e
> > /fnal/ups/prd/root/Linux-2-4/cvsdGCC_3_2_1_debug/lib/libCore.so
> > 0x000000000020d201" from the attached gdb stack trace gives me a nice
> > "file name:line number" pair. But if triggered from within root I get (a
> > stuck root session or) this:
> >
> > root [14] ((TSystem*)new TString("ABJGDGD"))->Dump()
> >
> > *** Break *** illegal instruction
> > Generating stack trace...
> > /fnal/ups/prd/gcc/Linux-2-4/v3_2_1/bin/c++filt: unknown demangling style
> > `gnu-new-abi'
> >
> > Any help or idea is appreciated!
> >
> > Cheers, Axel.
> >
> >
> > ---
> > #0 0x413daaa5 in __sigsuspend (set=0xbffe1350) at
> > ../sysdeps/unix/sysv/linux/sigsuspend.c:45
> > #1 0x4137c079 in __pthread_wait_for_restart_signal (self=0x41384d60) at
> > pthread.c:967
> > #2 0x4137dd39 in __pthread_alt_lock (lock=0x414e0a40, self=0x0) at
> > restart.h:34
> > #3 0x4137ac16 in __pthread_mutex_lock (mutex=0x414e0a30) at mutex.c:120
> > #4 0x4142b61d in ptmalloc_lock_all () at malloc.c:1624
> > #5 0x4137af42 in __vfork () at ptfork.c:74
> > #6 0x4141e93e in _IO_new_proc_open (fp=0x42a02640,
> > command=0xbffe1bd0
> > "/fnal/ups/prd/gcc/Linux-2-4/v3_2_1/bin/addr2line -e
> > /fnal/ups/prd/root/Linux-2-4/cvsdGCC_3_2_1_debug/lib/libCore.so
> > 0x000000000020d201", mode=0x404f1de8 "r") at iopopen.c:155
> > #7 0x4141ecc0 in _IO_new_popen (
> > command=0xbffe1bd0
> > "/fnal/ups/prd/gcc/Linux-2-4/v3_2_1/bin/addr2line -e
> > /fnal/ups/prd/root/Linux-2-4/cvsdGCC_3_2_1_debug/lib/libCore.so
> > 0x000000000020d201", mode=0x404f1de8 "r") at iopopen.c:231
> > #8 0x402253d9 in TUnixSystem::StackTrace() (this=0x8559108) at
> > unix/src/TUnixSystem.cxx:1506
> > #9 0x40223b47 in TUnixSystem::DispatchSignals(ESignals)
> > (this=0x8559108, sig=kSigSegmentationViolation) at
> > unix/src/TUnixSystem.cxx:689
> > #10 0x40222a94 in SigHandler (sig=kSigSegmentationViolation) at
> > unix/src/TUnixSystem.cxx:279
> > #11 0x40227041 in sighandler (sig=11) at unix/src/TUnixSystem.cxx:2455
> > #12 0x4137c8d5 in pthread_sighandler (signo=11, ctx=
> > {gs = 7, __gsh = 0, fs = 0, __fsh = 0, es = 43, __esh = 0, ds =
> > 43, __dsh = 0, edi = 146300056, esi = 0, ebp = 3221104952, esp =
> > 3221104912, ebx = 1095639380, edx = 4294967295, ecx = 1095632416, eax =
> > 79, trapno = 14, err = 6, eip = 1094897308, cs = 35, __csh = 0, eflags =
> > 66182, esp_at_signal = 3221104912, ss = 43, __ssh = 0, fpstate =
> > 0xbffe2690, oldmask = 2147483648, cr2 = 11}) at signals.c:97
> > #13 <signal handler called>
> > #14 0x4142ce9c in chunk_free (ar_ptr=0x414e0620, p=0x8b85c98) at
> > malloc.c:3228
> > #15 0x4142cbf4 in __libc_free (mem=0x8b85ca0) at malloc.c:3154
> > #16 0x404ce355 in operator delete(void*) (ptr=0xfffffffc) at
> > ../../../../../gcc-3.2.1/libstdc++-v3/libsupc++/del_op.cc:39
> > #17 0x404ce371 in operator delete[](void*) (ptr=0xfffffffc) at
> > ../../../../../gcc-3.2.1/libstdc++-v3/libsupc++/del_opv.cc:36
> > #18 0x4017aea2 in TStringRef::UnLink() (this=0x8b85ca0) at
> > include/TString.h:386
> > #19 0x40178c5a in TString::Replace(int, int, char const*, int)
> > (this=0x8b85bd4, pos=0, n1=77,
> > cs=0x8b86120
> > "/home/naumann/work/frank_bid_fwk/d0root_analysis/read_event/MBresolutionFunction_p13.root",
> > n2=89)
> > at base/src/TString.cxx:588
> > #20 0x4017818e in TString::operator=(char const*) (this=0x8b85bd4,
> > cs=0x8b86120
> > "/home/naumann/work/frank_bid_fwk/d0root_analysis/read_event/MBresolutionFunction_p13.root")
> > at base/src/TString.cxx:348
> > #21 0x4015b7cb in TNamed::SetName(char const*) (this=0x8b85bc8,
> > name=0x8b86120
> > "/home/naumann/work/frank_bid_fwk/d0root_analysis/read_event/MBresolutionFunction_p13.root")
> > at base/src/TNamed.cxx:133
> > #22 0x4013e820 in TFile (this=0x8b85bc8,
> > fname1=0x42928c60
> > "$SRT_PRIVATE_CONTEXT/d0root_analysis/read_event/MBresolutionFunction_p13.root",
> > option=0x42928c2a "read",
> > ftitle=0x42928c2f "", compress=1) at base/src/TFile.cxx:237
> >
>
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