From 426d8c84c37064eef93bbcfaffd886d00a9a4ee8 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michael@niedermayer.cc>
Date: Sat, 8 Jun 2024 20:46:28 +0200
Subject: [PATCH] avformat/subfile: Assert that whence is a known case

This may help CID1452449 Uninitialized scalar variable

Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavformat/subfile.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libavformat/subfile.c b/libavformat/subfile.c
index eedac1524e..be48ef72ef 100644
--- a/libavformat/subfile.c
+++ b/libavformat/subfile.c
@@ -18,6 +18,7 @@
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#include "libavutil/avassert.h"
 #include "libavutil/avstring.h"
 #include "libavutil/opt.h"
 #include "url.h"
@@ -135,6 +136,8 @@ static int64_t subfile_seek(URLContext *h, int64_t pos, int whence)
     case SEEK_END:
         new_pos = end + pos;
         break;
+    default:
+        av_assert0(0);
     }
     if (new_pos < c->start)
         return AVERROR(EINVAL);