From 956f4cc431ec55859c481f2bc17a3c9e43babd6b Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michael@niedermayer.cc>
Date: Thu, 16 May 2024 04:13:14 +0200
Subject: [PATCH] avcodec/rv34: assert that size is not 0 in rv34_gen_vlc_ext()

Helps: CID1548380 Uninitialized scalar variable

Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit e5098589b0ca74b3f52e09bae277306a1fc0cd43)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavcodec/rv34.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libavcodec/rv34.c b/libavcodec/rv34.c
index 914bde4a2a..ed630cd597 100644
--- a/libavcodec/rv34.c
+++ b/libavcodec/rv34.c
@@ -97,6 +97,8 @@ static av_cold void rv34_gen_vlc_ext(const uint8_t *bits, int size, VLC *vlc,
     uint16_t cw[MAX_VLC_SIZE];
     int maxbits;
 
+    av_assert1(size > 0);
+
     for (int i = 0; i < size; i++)
         counts[bits[i]]++;