Programming

#include <iostream>
using namespace std;
 
extern int test1();
extern int test2();
 
int main()
{
    cout << "hello world" << endl ;
    return 0 ;
    cout << "Test 1" << endl;
    test1();
 
    cout << "Test 2" << endl;
    test2();
 
    return 0;
}

g++ -g -Wall -fPIC -D_DEBUG -o test -I./include32 src/xxx.cpp src/yyy.cpp src/test.cpp -L./lib32 -lshare1 -lshared2

hello world
***glibc detected *** ./test: double free or corrution (!prev) 0x00000000077ec30 ***

#include <sys/types.h>
#include <unistd.h>
#include <stdio.h>

char command[ 1024 ];
long pid = ( long ) ::getpid(); // use long to ensure correct format specifier
sprintf( command, "pmap %ld", pid );
system( command );

cout << "hello world" << endl ;
return 0 ;

#include <iostream>
#include <sys/types.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <dlfcn.h>

using namespace std;

int main()
{
   
    cout << "hello world 3 " << endl ;
    void *handle2;
    handle2 = dlopen ("/usr/local/lib/xxx.so", RTLD_LAZY);   
    if (!handle2) {
        fprintf (stderr, "%s\n", dlerror());
        exit(1);
    }
    
    cout << "hello world 1 " << endl ;
    void *handle3;
    handle3 = dlopen ("/usr/local/lib/yyy.so", RTLD_LAZY);
    if (!handle3) {
        fprintf (stderr, "%s\n", dlerror());
        exit(1);
    }


    cout << "hello world" << endl ;
}