ch_assign = av_get_channel_layout_channel_index(s->ch_layout,
channel);
}
- if ((unsigned)ch_assign > s->max_matrix_channel) {
+ if (ch_assign < 0 || ch_assign > s->max_matrix_channel) {
avpriv_request_sample(m->avctx,
"Assignment of matrix channel %d to invalid output channel %d",
ch, ch_assign);