From 890efee2b80d5b3b5eb087d1f2a472854f66afe3 Mon Sep 17 00:00:00 2001 From: Andreas Rheinhardt Date: Sun, 10 Jul 2022 21:25:38 +0200 Subject: [PATCH] avcodec/h264_loopfilter: Fix incorrect function parameter array size filter_mb_mbaff_edgev() and filter_mb_mbaff_edgecv() have a function parameter whose expected size depends upon another parameter: It is 2 * bsi + 1 (with bsi always being 1 or 2). This array is declared as const int16_t[7], yet some of the callers with bsi == 1 call it with only an const int16_t[4] available. This leads to -Wstringop-overread warnings from GCC 12.1. This commit fixes these by replacing [7] with [/* 2 * bsi + 1 */], so that the expected range and its dependence on bsi is immediately visible. Signed-off-by: Andreas Rheinhardt --- libavcodec/h264_loopfilter.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/libavcodec/h264_loopfilter.c b/libavcodec/h264_loopfilter.c index 2440cfa831..c164a289b7 100644 --- a/libavcodec/h264_loopfilter.c +++ b/libavcodec/h264_loopfilter.c @@ -143,7 +143,7 @@ static av_always_inline void filter_mb_edgecv(uint8_t *pix, int stride, static av_always_inline void filter_mb_mbaff_edgev(const H264Context *h, uint8_t *pix, int stride, - const int16_t bS[7], int bsi, + const int16_t bS[ /* 1 + 2 * bsi */ ], int bsi, int qp, int a, int b, int intra) { @@ -166,7 +166,7 @@ static av_always_inline void filter_mb_mbaff_edgev(const H264Context *h, uint8_t static av_always_inline void filter_mb_mbaff_edgecv(const H264Context *h, uint8_t *pix, int stride, - const int16_t bS[7], + const int16_t bS[ /* 1 + 2 * bsi */ ], int bsi, int qp, int a, int b, int intra) {