Writing a std::vector<unsigned long> in a Branch

[bomben]

Hi all,
I’m triyng to create an array of stl vectors:

std::vector<word> _AMDigi[maxNTrk]; 

and save it in a Branch:

_tree->Branch("AMDigi","vector<word>",_AMDigi);

The code compiles but then it crashes when trying to fill:

SbtNtupleDumper::Fill

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1244010800 (LWP 23024)]
0xb72e0a16 in TBufferFile::WriteFastArray ()
from /home/bomben/work/root-518/root/lib/libRIO.so
(gdb) where
#0 0xb72e0a16 in TBufferFile::WriteFastArray ()
from /home/bomben/work/root-518/root/lib/libRIO.so
#1 0xb73089c4 in TGenCollectionStreamer::WritePrimitives ()
from /home/bomben/work/root-518/root/lib/libRIO.so
#2 0xb730bb06 in TGenCollectionStreamer::Streamer ()
from /home/bomben/work/root-518/root/lib/libRIO.so
#3 0xb72e69d5 in TCollectionStreamer::Streamer ()
from /home/bomben/work/root-518/root/lib/libRIO.so
#4 0xb72e7166 in TCollectionClassStreamer::operator() ()
from /home/bomben/work/root-518/root/lib/libRIO.so
#5 0xb79d0664 in TClass::Streamer ()
from /home/bomben/work/root-518/root/lib/libCore.so
#6 0xb72debca in TBufferFile::WriteFastArray ()
from /home/bomben/work/root-518/root/lib/libRIO.so
#7 0xb73625a0 in TStreamerInfo::WriteBufferAux<char**> ()
from /home/bomben/work/root-518/root/lib/libRIO.so
#8 0xb6938473 in TBranchElement::FillLeaves ()
from /home/bomben/work/root-518/root/lib/libTree.so
#9 0xb6933e24 in TBranch::Fill ()
from /home/bomben/work/root-518/root/lib/libTree.so
#10 0xb693784b in TBranchElement::Fill ()
from /home/bomben/work/root-518/root/lib/libTree.so
#11 0xb6972f41 in TTree::Fill ()
—Type to continue, or q to quit—
from /home/bomben/work/root-518/root/lib/libTree.so
#12 0xb647c23d in SbtNtupleDumper::Fill () from ./tmp/libSbt.so
#13 0xb648344e in SbtNtupleDumper::GetEntry () from ./tmp/libSbt.so
#14 0x0804a701 in main (argc=4, argv=Cannot access memory at address 0x4
) at EventReco.C:136

I have defined:

typedef unsigned long int word;
/* ... */
#pragma link C++ class std::vector<word>;

I have searched in the forum but didn’t find anything similar.
Root version in 5.18

Many thanks in advance,
Marco

[brun]

This should be OK in ROOT5.20, but not in 5.18.
in 5.18 you must create a td::vector *_AMDigi[maxNTrk]; using new

Rene