mpegenc: prevent a NULL pointer dereference

CC: libav-stable@libav.org Bug-Id: CID 29261

mpegenc: prevent a NULL pointer dereference
CC: libav-stable@libav.org Bug-Id: CID 29261
065923b0 · Vittorio Giovara · 9c12c6ff · 065923b0
Commit 065923b0 authored Nov 21, 2014 by Vittorio Giovara
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mpegenc.c libavformat/mpegenc.c +1 -1

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--- a/libavformat/mpegenc.c
+++ b/libavformat/mpegenc.c
@@ -1057,7 +1057,7 @@ retry:
        es_size              -= stream->premux_packet->unwritten_size;
        stream->premux_packet = stream->premux_packet->next;
    }
-    if (es_size)
+    if (stream->premux_packet && es_size)
        stream->premux_packet->unwritten_size -= es_size;

    if (remove_decoded_packets(ctx, s->last_scr) < 0)