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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