Problem with List

[ttony]

Hi,
can somebody explain why am I getting segmentation fault on this program. It seams that the list that is initialized in clstouchcontext.h does not get recognized in clstouchcontext.cpp

Makefile is attached.

main.cpp:

#include "clstouchcontext.h"
#include <iostream>
int main () {
    clsTouchContext* pContext = 0; //= GetContext ( iContextId );     //check iContextId
    std::cout << "main here " << std::endl;
    pContext->SetKey_clsTouchContext ( 0 , 0 , 0 , 0 , 0 );
    return 0;
};

________________________________________________
clstouchcontext.cpp:

#include "clstouchcontext.h"
#include <iostream>

clsTouchContext::clsTouchContext(  ){ }
clsTouchContext::~clsTouchContext() { }

int  clsTouchContext::   SetKey_clsTouchContext  ( int iKeyId ,  int iX ,  int iY ,  int iW , int iH ) {
    std::cout << "clsTouchContext::   SetKey_clsTouchContext here " << m_lstAreas.size() <<"  " << iKeyId << iX << iY << iW << iH << std::endl;
    m_lstAreas.push_back ( 0  );      //loading key coordinates in list   m_lstAreas
    std::cout << "clsTouchContext::   SetKey_clsTouchContext here " << m_lstAreas.size() <<"  " << iKeyId << iX << iY << iW << iH << std::endl;
    return 0;
}

________________________________________________

clstouchcontext.h

#include <list>
class clsTouchContext {
    public:
        clsTouchContext( );
        ~clsTouchContext();
        int             SetKey_clsTouchContext  ( int iKeyId ,  int iX ,  int iY , int iW ,  int iH );
    protected:
      std::list<int>     m_lstAreas;
private:

};

______________________________________________
Makefile:

DEBUG = true
GLOBALCFLAGS = -march=i586 -W -Wall
DISTRIBUTE = -j3
GCCACHE = ccache
GPP =  g++
PROFL = #-pg

EXE = ./touchtest

ifdef DEBUG
    XTRAFLAGS = -g -D_DEBUG $(PROFL)
    LINKFLAGS = $(PROFL)  -lpthread
else
    XTRAFLAGS = -O2
    LINKFLAGS =  -lpthread
endif

STATIC_LIB = libtouchscreen.a

# normal object compilation parameters
CFLAGS    = -D_REENTRANT $(XTRAFLAGS) $(GLOBALCFLAGS) -fPIC -I./
   #
SHARED_OBJS =  main.o  \
clstouchcontext.o

all: $(STATIC_LIB) $(EXE)

$(STATIC_LIB): $(SHARED_OBJS)
        ar -r $(STATIC_LIB)  $(SHARED_OBJS) > /dev/null 2>&1 || echo "FAILED"

$(EXE): $(STATIC_LIB)
        $(GPP)  $(STATIC_LIB) $(LINKFLAGS) -o $(EXE)

%.o: %.cpp %.h Makefile
        $(GPP) $(CFLAGS) -c $<

%.o: %.cpp Makefile
        $(GPP) $(CFLAGS) -c $<

clean:
        @rm -f gmon.out compile.h .kdbgrc* *.o *.a *.am *.so *.so.* test core*

[Rashakil Fol]

In your main function, pContext is NULL.

And use code tags please.