Getting segmentation fault in C on Ubuntu when trying to run function from .so library

Question

I am using libwireshark.so, libwsutil.so and libwiretap.so in order to make program which decodes packets like Wireshark in C on Ubuntu Linux.

I am try to run function named epan_init() from libwireshark.so but I get the following run-time error:

Enter file name: 1.pcap 

Enter print type(0-XML, 1-TEXT): 1

Init function start

Segmentaion fault (core dumped)

Process returned 139 (0x8B) execution time : 2.882 s

Press ENTER to continue.

SOURCE CODE:

#define HAVE_STDARG_H 1
#define WS_MSVC_NORETURN
#define _GNU_SOURCE

#include <stdlib.h>
#include <stdint.h>
#include <unistd.h>
#include <string.h>
#include <wireshark/epan/epan.h>
#include <wireshark/epan/print.h>
#include <wireshark/epan/timestamp.h>
#include <wireshark/epan/prefs.h>
#include <wireshark/epan/column.h>
#include <wireshark/epan/epan-int.h>
#include <wireshark/wsutil/privileges.h>
#include <wireshark/epan/epan_dissect.h>
#include <wireshark/epan/proto.h>
#include <wireshark/epan/ftypes/ftypes.h>
#include <wireshark/epan/asm_utils.h>

///Prototypes
void getString(char *msg, char **input);
int init(char *filename);

///Print type of packets
typedef enum {PRINT_XML, PRINT_TEXT} print_type_t;

capture_file cfile;

int main()
{
    ///Variables
    int err;
    char *filename = NULL;
    print_type_t print_type = PRINT_XML;

    getString("Enter file name: ", &filename);

    printf("Enter print type(0-XML, 1-TEXT): ");
    scanf("%d",&print_type);

    err = init(filename);
    if(err)
    {
    printf("Main function(): Error init");
    return 1;
    }


    printf("\n\n\n%s\n\n\n",cfile.filename);


    //printf("Hello World");
    return 0;
}

///Get input from user
void getString(char *msg, char **input)
{
    char buffer[100];

    printf("%s", msg);
    fgets(buffer, sizeof(buffer), stdin);

    *input = calloc(sizeof(char), strlen(buffer) + 1);
    strncpy(*input, buffer, strlen(buffer));
}

///
int init(char *filename)
{
    printf("Init function start\n");
    int err = 0;
    gchar *err_info = NULL;
    e_prefs *prefs_p;

    /// Called when the program starts, to enable security features and save whatever credential information we’ll need later.
    init_process_policies();
    printf("Init proccesss politices done");

    /// Init the whole epan module. Must be called only once in a program. Returns TRUE on success, FALSE on failure.
    epan_init(register_all_protocols, register_all_protocol_handoffs, NULL, NULL);
    //printf("epan init done");
    cap_file_init(&cfile);
    cfile.filename = filename;

    return 0;
}

void cap_file_init(capture_file *cf)
{
    /* Initialize the capture file struct */
    memset(cf, 0, sizeof(capture_file));
    cf->snap = WTAP_MAX_PACKET_SIZE;
}