libavfilter/af_asyncts.c:220: error: Integer Overflow L2
  ([0, +oo] - 1):unsigned32 by call to `ff_filter_samples`.

libavfilter/af_asyncts.c:214:9: Assignment
212. 
213.         avresample_read(s->avr, buf_out->extended_data, out_size);
214.         buf_out->pts = s->pts;
             ^
215. 
216.         if (delta > 0) {

libavfilter/af_asyncts.c:220:15: Call
218.                                    delta, nb_channels, buf->format);
219.         }
220.         ret = ff_filter_samples(outlink, buf_out);
                   ^
221.         if (ret < 0)
222.             goto fail;

libavfilter/audio.c:156:1: Parameter `samplesref->buf->refcount`
  154. }
  155. 
  156. int ff_filter_samples(AVFilterLink *link, AVFilterBufferRef *samplesref)
       ^
  157. {
  158.     int (*filter_samples)(AVFilterLink *, AVFilterBufferRef *);

libavfilter/audio.c:177:13: Call
  175.                                               samplesref->audio->nb_samples);
  176.         if (!buf_out) {
  177.             avfilter_unref_buffer(samplesref);
                   ^
  178.             return AVERROR(ENOMEM);
  179.         }

libavfilter/buffer.c:75:1: <LHS trace>
73. }
74. 
75. void avfilter_unref_buffer(AVFilterBufferRef *ref)
    ^
76. {
77.     if (!ref)

libavfilter/buffer.c:75:1: Parameter `ref->buf->refcount`
    73. }
    74. 
    75. void avfilter_unref_buffer(AVFilterBufferRef *ref)
        ^
    76. {
    77.     if (!ref)

libavfilter/buffer.c:79:11: Binary operation: ([0, +oo] - 1):unsigned32 by call to `ff_filter_samples` 
    77.     if (!ref)
    78.         return;
    79.     if (!(--ref->buf->refcount))
                  ^
    80.         ref->buf->free(ref->buf);
    81.     if (ref->extended_data != ref->data)
