Hi Philippe,
thank you. I remember the fix you did for the case when the base
class of the object written in non-split mode has changed. So, now
I am using the root_v4_00_6a. I still can read my old tree in the
root v_3.05, after I go back to old base class, but it crashes extactly
in the v4_00_6a, which became the official version of na60..
In the attached package you can find the code necessary to reproduce the
problem: just run "crelib" to create the library and execute the
readTree.C macro.
Unfortunately, the smallest data file I have is ~3MB, I put a copy of it
on
/afs/cern.ch/user/s/shahoian/public/genesis_venus_noPileUp_pt7Pos_acmPos836.root
and
http://na60.cern.ch/www/Members/shahoian/genesis_venus_noPileUp_pt7Pos_acmPos836.root
Best regards,
Ruben
--
On Fri, 2 Jul 2004, Philippe Canal wrote:
> Hi Ruben,
>
> > I have tried to reproduce the old class version, now the fCluster seems to
> > get correct offset, but it still crashes:
>
> So my guess is that it does not crash because of the change regarding fClusters.
>
> In addition:
> ReadBuffer, class:NaDigit1D, name=fTracks, fType[3]=62,
> TStreamerObjectAny, bufpos=411, arr=0x9e3c4b0, offset=20
> seems to indicate that the crash happens while reading the fTracks pointer.
>
> I think you problem is linked to the fact that you have a class NaStripDigit
> which inherits from NaDigit1D.
>
> I fixed a related problem in ROOT 4.00/04.
>
> If you are not already using ROOT 4.00/04 or a more recent version, try upgrading.
>
> If you already use a recent version, please send me a complete
> example (i.e. old ROOT files and new header files library) and I
> will fix this problem.
>
> Also you can probably work-around the problem by increasing the version number
> of NaStripDigit (yes NaStripDigit) and recompiling.
>
> Cheers,
> Philippe.
>
> -----Original Message-----
> From: owner-roottalk@pcroot.cern.ch
> [mailto:owner-roottalk@pcroot.cern.ch]On Behalf Of Ruben Shahoyan
> Sent: Tuesday, June 29, 2004 11:34 AM
> To: roottalk@cern.ch
> Subject: [ROOT] Problem in TStreamerInfo for old class version
>
>
> Dear Rene,
> we have the problem to read an old root tree (created in v_3.05).
> The tree contains the TObjArray of TClonesArrays of the objects
> derived from NaDigit1D class.
> At the moment of the creation of the tree the class had following members
> {
> protected
> Int_t fI; // Value of the digit
> Int_t fCluster; // Number of the Cluster to which it is attached
> TArrayI* fTracks; // Optional array of references on track
> Float_t fXYZE[4];
> ClassDef(NaDigit1D,2) // Base class for 1Dim digits with FULL TRACKING INFO
> }
>
> while now it was converted to (fCluster become non-persistent)
>
> {
> protected
> Int_t fI; // Value of the digit
> Int_t fCluster; //! Number of the Cluster to which it is attached
> TArrayI* fTracks; // Optional array of references on track
> Float_t fXYZE[4];
> ClassDef(NaDigit1D,4) // Base class for 1Dim digits with FULL TRACKING INFO
> }
>
> When we read an old tree, we get the seg.viol (gDebug=2)
>
> ...
> ====>Rebuilding TStreamerInfo for class: NaStripDigit, version: 1
>
> ====>Rebuilding TStreamerInfo for class: NaDigit1D, version: 2
> Creating StreamerInfo for class: NaDigit1D, version: 4
>
> StreamerInfo for class: NaDigit1D, version=4
> TObject BASE offset= 0 type=66 Basic ROOT object
> Int_t fI offset= 12 type= 3 Value of the digit
> TArrayI* fTracks offset= 20 type=69 Optional array of references on track
> Float_t fXYZE[4] offset= 24 type=25
> i= 0, TObject type= 66, offset= 0, len=1, method=0
> i= 1, fI type= 3, offset= 12, len=1, method=0
> i= 2, fTracks type= 69, offset= 20, len=1, method=0
> i= 3, fXYZE type= 25, offset= 24, len=4, method=0
> Warning in <TStreamerInfo::BuildOld>: element: NaDigit1D::Float_t fXYZE has new type: Float_t/25
>
> StreamerInfo for class: NaDigit1D, version=2
> TObject BASE offset= 0 type=66 Basic ROOT object
> Int_t fI offset= 12 type= 3 Value of the digit
> Int_t fCluster offset=99999 type= 3 Number of the Cluster to which it is attached
> TArrayI* fTracks offset= 20 type=62 Optional array of references on track
> Float_t fXYZE[4] offset= 24 type=25
> i= 0, TObject type= 66, offset= 0, len=1, method=0
> i= 1, fI type= 3, offset= 12, len=1, method=0
> i= 2, fCluster type=103, offset=99999, len=1, method=0
> i= 3, fTracks type= 62, offset= 20, len=1, method=0
> i= 4, fXYZE type= 25, offset= 24, len=4, method=0
> StreamerInfo for class: NaStripDigit, version=1
> NaDigit1D BASE offset= 0 type= 0 Base class for 1Dim digits with FULL TRACKING INFO
> Float_t fAmplitude offset= 40 type= 5 Signal in the strip
> i= 0, NaDigit1D type= 0, offset= 0, len=1, method=165954728
> i= 1, fAmplitude type= 5, offset= 40, len=1, method=0
> ReadBuffer, class:NaStripDigit, name=NaDigit1D, fType[0]=0, TStreamerBase,
> bufpos=177, arr=0x9e3c4b0, offset=0
> ReadBuffer, class:NaDigit1D, name=TObject, fType[0]=66, TStreamerBase,
> bufpos=177, arr=0x9e3c4b0, offset=0
> ReadBuffer, class:NaDigit1D, name=fI, fType[1]=3, TStreamerBasicType,
> bufpos=307, arr=0x9e3c4b0, offset=12
> ReadBuffer, class:NaDigit1D, name=fCluster, fType[2]=103,
> TStreamerBasicType, bufpos=359, arr=0x9e3c4b0, offset=99999
> ReadBuffer, class:NaDigit1D, name=fTracks, fType[3]=62,
> TStreamerObjectAny, bufpos=411, arr=0x9e3c4b0, offset=20
>
> *** Break *** segmentation violation
> Generating stack trace...
> /usr/bin/addr2line: na60root: No such file or directory
> /usr/bin/addr2line: na60root: No such file or directory
> 0x478cd188 in <unknown> from /lib/i686/libc.so.6
> 0x42274f71 in G__CallFunc::Exec(void *) + 0x71 from
> /home/offline/root_libc2.2/lib/libCint.so
> 0x41c9fa47 in TClass::Streamer(void *, TBuffer &) + 0x29b from
> /home/offline/root_libc2.2/lib/libCore.so
> 0x41cc8bbb in TStreamerInfo::ReadBuffer(TBuffer &, void *, int, int, int,
> int) + 0x2e47 from /home/offline/root_libc2.2/lib/libCore.so
> 0x41cc8cc5 in TStreamerInfo::ReadBuffer(TBuffer &, void *, int, int, int,
> int) + 0x2f51 from /home/offline/root_libc2.2/lib/libCore.so
> 0x41cc90df in TStreamerInfo::ReadBufferClones(TBuffer &, TClonesArray *,
> int, int, int) + 0x43 from /home/offline/root_libc2.2/lib/libCore.so
> 0x41c7f750 in TClonesArray::Streamer(TBuffer &) + 0x2bc from
> /home/offline/root_libc2.2/lib/libCore.so
> 0x41c9f8e5 in TClass::Streamer(void *, TBuffer &) + 0x139 from
> /home/offline/root_libc2.2/lib/libCore.so
> 0x41c0ebaa in TBuffer::ReadObjectAny(TClass const *) + 0x382 from
> /home/offline/root_libc2.2/lib/libCore.so
> 0x41c81c35 in TBuffer & operator>><TObject>(TBuffer &, TObject *&) + 0x39
> from /home/offline/root_libc2.2/lib/libCore.so
> 0x41c8ad00 in TObjArray::Streamer(TBuffer &) + 0x10c from
> /home/offline/root_libc2.2/lib/libCore.so
> 0x42984943 in TLeafObject::ReadBasket(TBuffer &) + 0x117 from
> /home/offline/root_libc2.2/lib/libTree.so
> 0x42969a8d in TBranch::ReadLeaves(TBuffer &) + 0x39 from
> /home/offline/root_libc2.2/lib/libTree.so
> 0x42968cd8 in TBranch::GetEntry(int, int) + 0x1bc from
> /home/offline/root_libc2.2/lib/libTree.so
> 0x42974643 in TBranchObject::GetEntry(int, int) + 0x137 from
> /home/offline/root_libc2.2/lib/libTree.so
> 0x4298ee80 in TTree::GetEntry(int, int) + 0x98 from
> /home/offline/root_libc2.2/lib/libTree.so
>
> As one can notice, the fCluster gets type=103, offset=99999 !
>
> I have tried to reproduce the old class version, now the fCluster seems to
> get correct offset, but it still crashes:
>
> ====>Rebuilding TStreamerInfo for class: NaStripDigit, version: 1
>
> ====>Rebuilding TStreamerInfo for class: NaDigit1D, version: 2
> Warning in <TStreamerInfo::BuildOld>: element: NaDigit1D::Float_t fXYZE
> has new type: Float_t/25
>
> StreamerInfo for class: NaDigit1D, version=2
> TObject BASE offset= 0 type=66 Basic ROOT object
> Int_t fI offset= 12 type= 3 Value of the digit
> Int_t fCluster offset= 16 type= 3 Number of the Cluster
> to which it is attached
> TArrayI* fTracks offset= 20 type=62 Optional array of
> references on track
> Float_t fXYZE[4] offset= 24 type=25
> i= 0, TObject type= 66, offset= 0, len=1, method=0
> i= 1, fI type= 3, offset= 12, len=1, method=0
> i= 2, fCluster type= 3, offset= 16, len=1, method=0
> i= 3, fTracks type= 62, offset= 20, len=1, method=0
> i= 4, fXYZE type= 25, offset= 24, len=4, method=0
>
> StreamerInfo for class: NaStripDigit, version=1
> NaDigit1D BASE offset= 0 type= 0 Base class for 1Dim
> digits with FULL TRACKING INFO
> Float_t fAmplitude offset= 40 type= 5 Signal in the strip
> i= 0, NaDigit1D type= 0, offset= 0, len=1, method=166360240
> i= 1, fAmplitude type= 5, offset= 40, len=1, method=0
> ReadBuffer, class:NaStripDigit, name=NaDigit1D, fType[0]=0, TStreamerBase,
> bufpos=177, arr=0x9ce4e98, offset=0
> ReadBuffer, class:NaDigit1D, name=TObject, fType[0]=66, TStreamerBase,
> bufpos=177, arr=0x9ce4e98, offset=0
> ReadBuffer, class:NaDigit1D, name=fI, fType[1]=3, TStreamerBasicType,
> bufpos=307, arr=0x9ce4e98, offset=12
> ReadBuffer, class:NaDigit1D, name=fCluster, fType[2]=3,
> TStreamerBasicType, bufpos=359, arr=0x9ce4e98, offset=16
> ReadBuffer, class:NaDigit1D, name=fTracks, fType[3]=62,
> TStreamerObjectAny, bufpos=411, arr=0x9ce4e98, offset=20
>
> *** Break *** segmentation violation
>
> Could you please suggest anything?
>
> Best regards,
> Ruben
>
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