Hi,
I'm using the boost library program_options for parsing the command
line given to my program as described in the class Parameter:
// Main.cpp
#include "Parameter.h"
using namespace std;
int main(int ac, char* av[])
{
// Parameter Initialization
Parameter::Initialize(ac, av);
}
// ----------------------------------------
// Parameter.h
// #ifndef __PARAMETER_H
#define __PARAMETER_H
#include <vector>
#include <string>
#include <iostream>
using namespace std;
class Parameter
{
public:
static void Initialize(int ac, char* av[])
{
if ( mpParameter == NULL ) {
mpParameter = new Parameter();
// Parse the command line
mpParameter->parseCommandLine(ac, av);
}
}
static Parameter* GetParameter()
{
if ( mpParameter == NULL ) {
cout << "Parameter class not initialized correctly" << endl;
exit(EXIT_FAILURE);
}
return mpParameter;
}
void parseFiles();
void parseCommandLine(int ac, char* av[]);
~Parameter();
private:
// Members
string mOutputFolder;
string mDataFolder;
string mParameterfile;
static Parameter* mpParameter;
Parameter();
};
#endif // __PARAMETER_H
// -----------------------------------------------
// Parameter.cpp
#include <iostream>
#include <iterator>
#include "Parameter.h"
#include <boost/program_options.hpp>
namespace po = boost::program_options;
Parameter* Parameter::mpParameter = NULL;
void Parameter::parseCommandLine(int ac, char* av[])
{
try {
po::options_description desc("Allowed options");
desc.add_options()
("help", "Show this help message")
("parameterfile,p", po::value<string>(&mParameterfile),
"Set Outputfolder");
po::variables_map vm;
po::store(po::parse_command_line(ac, av, desc), vm);
po::notify(vm);
if (vm.count("help")) {
cout << desc << "\n";
}
if (vm.count("parameterfile")) {
cout << "Parameterfile was set to: "
<< vm["parameterfile"].as<string>() << ".\n";
}
}
catch(exception& e) {
cerr << "Error: " << e.what() << "\n";
}
catch(...) {
cerr << "Exception of unknown type!\n";
}
}
Parameter::Parameter() : mOutputFolder("./OutputFolder"),
mDataFolder("Data"), mParameterfile("ParameterFiles/parameters.xml")
{
}
Parameter::~Parameter()
{
}
// --------------------------------
// Makefile
NEW_GCC = /afs/ies.auc.dk/sw/released
3G = /afs/ies.auc.dk/project/3.9G/Private/dist
CXX = g++
CPPFLAGS = -g -Wall -pipe -I$(3G)/include -I$(NEW_GCC)/include
-I$(3G)/../libraries_cpp -pg
LDFLAGS = -L$(NEW_GCC)/lib -L$(3G)/lib -lboost_filesystem-gcc-d-1_33_1
-lboost_program_options-gcc-1_33_1 -lxerces-c
..SUFFIXES: .c .cpp
TARGET = TEST
OBJ = Parameter.o Main.o
all: $(OBJ) $(TARGET)
..cpp.o:
$(CXX) $(CPPFLAGS) $< -c
$(TARGET): $(OBJ)
$(CXX) $(CPPFLAGS) $(OBJ) $(LDFLAGS) -o $@
purify: $(OBJ)
purify $(CXX) $(OBJ) -o $(TARGET)
clean:
-find . -name "*.o" -exec rm -rf {} \;
// ----------------
Now, if I try to run the program without specifing any input argument,
that is simply as ./TEST, then the program works (note that TEST is the
name I gave to the executable). If, instead, I try to specify as option
the path to the parameter file, like:
../TEST -p parameters.txt
(assuming parameters.txt to be on the same level of TEST)
then I receive the following error:
Segmentation fault
If I run the program using GDB then I get the following output:
Parameter::Initialize (ac=3, av=0xbffff934) at Parameter.h:17
17 mpParameter->parseCommandLine(ac, av);
(gdb)
Program received signal SIGSEGV, Segmentation fault.
0xb7ad9f97 in std::string::_Rep::_M_grab () from
/usr/lib/libstdc++.so.5
(gdb)
Single stepping until exit from function _ZNSs4_Rep7_M_grabERKSaIcES2_,
which has no line number information.
Couldn't get registers: No such process.
(gdb)
Single stepping until exit from function _ZNSs4_Rep7_M_grabERKSaIcES2_,
which has no line number information.
Cannot fetch general-purpose registers for thread -1215358144: generic
error
(gdb)
Single stepping until exit from function _ZNSs4_Rep7_M_grabERKSaIcES2_,
which has no line number information.
Cannot fetch general-purpose registers for thread -1215358144: generic
error
Note that this error occurs only when I use Linux. With Visual Studio
C++ 2005 (under Windows) I don't have problems even if I specify the
parameter through command line.
Does anyone have any suggestion on how to solve this problem in Linux?
Thanks & regards
Cesco
