a_case_for_goto.c

/*
taken from:
  MOC (music on console), alsa.c
*/
static snd_pcm_hw_params_t *alsa_open_device (const char *device)
{
    int rc;
    snd_pcm_hw_params_t *result;

    assert (!handle);

    rc = snd_pcm_open (&handle, device, SND_PCM_STREAM_PLAYBACK,
                                        SND_PCM_NONBLOCK);
    if (rc < 0) {
        error_errno ("Can't open audio", rc);
        goto err1;
    }

    rc = snd_pcm_hw_params_malloc (&result);
    if (rc < 0) {
        error_errno ("Can't allocate hardware parameters structure", rc);
        goto err2;
    }

    rc = snd_pcm_hw_params_any (handle, result);
    if (rc < 0) {
        error_errno ("Can't initialize hardware parameters structure", rc);
        goto err3;
    }

    if (0) {
    err3:
        snd_pcm_hw_params_free (result);
    err2:
        snd_pcm_close (handle);
    err1:
        result = NULL;
        handle = NULL;
    }

    return result;
}