How to get instruction information from libopcodes?

I am writing a tool which uses libbfd and libopcodes in x86-32 and x86-64 Linux to perform disassembly. The problem is that whilst I am able to get libopcodes to disassemble, I am unable to get any instruction information. For the purposes of demonstration, I have made a minimal example which reproduces my issue. The program should disassemble itself from entry point to the first RET/RETQ.

The code is a bit hacked up with globals and error checking has been omitted for brevity, etc. but should illustrate the issue clearly.

#include <bfd.h>
#include <dis-asm.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <string.h>
#include <ctype.h>
#include <limits.h>
#include <libiberty.h>

/*
 * Holds state for BFD and libopcodes.
 */
bfd *        abfd  = NULL;
disassemble_info dinfo = {0};

/*
 * Temporary hack to signal when disassembling should stop.
 */
static bool stop_disassembling = FALSE;

/*
 * Gets path to currently running executable.
 */
bool get_target_path(char * target_path, size_t size)
{
    char *   path;
    ssize_t len;

    pid_t pid = getpid();
    sprintf(target_path, "/proc/%d/exe", (int)pid );

    path = strdup(target_path);
    len  = readlink(path, target_path, size);

    target_path[len] = '\0';
    free(path);
    return TRUE;
}

/*
 * libopcodes appends spaces on the end of some instructions so for
 * comparisons, we want to strip those first.
 */
void strip_tail(char * str, unsigned int size)
{
    int i;
    for(i = 0; i < size; i++) {
        if(!isgraph(str[i])) {
            str[i] = '\0';
            break;
        }
    }
}

/*
 * Checks whether the current instruction will cause the control flow to not
 * proceed to the linearly subsequent instruction (e.g. ret, jmp, etc.)
 */
bool breaks_control_flow(char * str)
{
    if(abfd-