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authorMichael Niedermayer <michael@niedermayer.cc>2017-01-21 01:35:52 +0100
committerMichael Niedermayer <michael@niedermayer.cc>2017-08-23 13:15:17 +0200
commita0a20e6994da619d368781b3bb5e4db43a673237 (patch)
treee69609caccfb18a1e808fcb8c5a727643443146e
parenteac727a50218fe14a792575e3431bed97b07096f (diff)
downloadffmpeg-a0a20e6994da619d368781b3bb5e4db43a673237.tar.gz
avfilter/avfiltergraph: Add assert to write down in machine readable form what is assumed about sample rates in swap_samplerates_on_filter()
Fixes CID1397292 Signed-off-by: Michael Niedermayer <michael@niedermayer.cc> (cherry picked from commit 5f2b360fc05bbb4f21e1247d1d9af303113d6c25) Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
-rw-r--r--libavfilter/avfiltergraph.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/libavfilter/avfiltergraph.c b/libavfilter/avfiltergraph.c
index 9178939f77..d01cc5a7f5 100644
--- a/libavfilter/avfiltergraph.c
+++ b/libavfilter/avfiltergraph.c
@@ -817,6 +817,8 @@ static void swap_samplerates_on_filter(AVFilterContext *filter)
for (j = 0; j < outlink->in_samplerates->nb_formats; j++) {
int diff = abs(sample_rate - outlink->in_samplerates->formats[j]);
+ av_assert0(diff < INT_MAX); // This would lead to the use of uninitialized best_diff but is only possible with invalid sample rates
+
if (diff < best_diff) {
best_diff = diff;
best_idx = j;