@@ -361,6 +361,7 @@ static av_cold int init(AVFilterContext *ctx)

 {

     ConcatContext *cat = ctx->priv;

     unsigned seg, type, str;

+    int ret;

     /* create input pads */

     for (seg = 0; seg < cat->nb_segments; seg++) {

@@ -373,7 +374,10 @@ static av_cold int init(AVFilterContext *ctx)

                     .filter_frame     = filter_frame,

                 };

                 pad.name = av_asprintf("in%d:%c%d", seg, "va"[type], str);

-                ff_insert_inpad(ctx, ctx->nb_inputs, &pad);

+                if ((ret = ff_insert_inpad(ctx, ctx->nb_inputs, &pad)) < 0) {

+                    av_freep(&pad.name);

+                    return ret;

+                }

             }

         }

     }

@@ -386,7 +390,10 @@ static av_cold int init(AVFilterContext *ctx)

                 .request_frame = request_frame,

             };

             pad.name = av_asprintf("out:%c%d", "va"[type], str);

-            ff_insert_outpad(ctx, ctx->nb_outputs, &pad);

+            if ((ret = ff_insert_outpad(ctx, ctx->nb_outputs, &pad)) < 0) {

+                av_freep(&pad.name);

+                return ret;

+            }

         }

     }