Crash when trying to use vector <pair <int,double>

ROOT
1

Hi,

I am reading a Tree with an interpreted C code I obtained using MakeClass on the given Tree. So far, the code has been working without problems, until I tried to use a vector of pairs. Since then, it’s been crashing whenever I am pushing back values in the vector.

Here’s the code I am using to test this (not including the part which reads the Tree):

#include "Jpsi.h"
#include <pair.h>
#include <vector.h>

void Jpsi::Loop()
{
using namespace std;
vector< pair<int,double> > true_elec_index;
int testint=1;
double testdouble=1.2325646548;

true_elec_index.push_back( make_pair( testint, testdouble ) );

}

When executing this, I get the following output:

root [1] Jpsi t; t.Loop();
*** glibc detected *** double free or corruption (!prev): 0x08eebda8 ***
%@>

And then Root exits. I know this code works in compiled c++ (i.e. not using Root libraries). Does anybody know why it doesn’t in interpreted Root?

Thanks in advance,

Andrée

2

When using STL collections in your code, you must use ACLIC to compile it.
do

root > .L Jpsi.C+ root > Jpsi t;

The coming version of CINT will provide a correct support for STL.

Rene

3

Thanks for the hint! But I still have some problems using this…

ACLIC tells me that the compilation failed, even with code that is normally working and I am not sure to quite get what the problems are…

Using this simple code (removing the Jpsi part):

#include <pair.h>
#include <vector.h>

void test()
{
using namespace std;
   vector< pair<int,double> > true_elec_index;
   int testint=1;
   double testdouble=1.2325646548;

   true_elec_index.push_back( make_pair( testint, testdouble ) );

}

Root tells me the following:

root [0] .L test.C+ 
Info in <TUnixSystem::ACLiC>: creating shared library /atlas/data1/userdata/arobic/Egamma/14.2.10/PhysicsAnalysis/AnalysisCommon/UserAnalysis/run/./test_C.so
In file included from /usr/lib/gcc/x86_64-redhat-linux/3.4.6/../../../../include/c++/3.4.6/backward/pair.h:59,
                 from /atlas/data1/userdata/arobic/Egamma/14.2.10/PhysicsAnalysis/AnalysisCommon/UserAnalysis/run/./test.C:1,
                 from /atlas/data1/userdata/arobic/Egamma/14.2.10/PhysicsAnalysis/AnalysisCommon/UserAnalysis/run/./fileuJCylO.h:32,
                 from /atlas/data1/userdata/arobic/Egamma/14.2.10/PhysicsAnalysis/AnalysisCommon/UserAnalysis/run/./fileuJCylO.cxx:16:
/usr/lib/gcc/x86_64-redhat-linux/3.4.6/../../../../include/c++/3.4.6/backward/backward_warning.h:32:2: warning: #warning This file includes at least one deprecated or antiquated header. Please consider using one of the 32 headers found in section 17.4.1.2 of the C++ standard. Examples include substituting the <X> header for the <X.h> header for C++ includes, or <iostream> instead of the deprecated header <iostream.h>. To disable this warning use -Wno-deprecated.
In file included from /atlas/data1/userdata/arobic/Egamma/14.2.10/PhysicsAnalysis/AnalysisCommon/UserAnalysis/run/./fileuJCylO.cxx:16:
/atlas/data1/userdata/arobic/Egamma/14.2.10/PhysicsAnalysis/AnalysisCommon/UserAnalysis/run/./fileuJCylO.h:33:23: algorithm.h: No such file or directory
g++: /atlas/data1/userdata/arobic/Egamma/14.2.10/PhysicsAnalysis/AnalysisCommon/UserAnalysis/run/./fileuJCylO.o: No such file or directory
Error in <ACLiC>: Compilation failed!

I don’t quite grasp what is the error here… it seems to come from those ./filennnnn.cxx but what are they? Otherwise, I only see warnings listed there.

For the record, I use version 5.18.00d

Thanks!

Andrée

4

You are including the wrong (obsolete headers). Do:

[code]#include

void test() {
using namespace std;
vector< pair<int,double> > true_elec_index;
int testint=1;
double testdouble=1.2325646548;

true_elec_index.push_back( make_pair( testint, testdouble ) );

}
[/code]
Rene

5

Brilliant, now it works like a charm!

Thanks a million!

Andrée