Fixes: negation of -2147483648 cannot be represented in type 'int'; cast to an unsigned type to negate this value to itself Fixes: 25675/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_G729_fuzzer-4786580731199488
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/celp_filters.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/libavcodec/celp_filters.c b/libavcodec/celp_filters.c index fafedd99a3..40ff7427df 100644 --- a/libavcodec/celp_filters.c +++ b/libavcodec/celp_filters.c @@ -65,11 +65,11 @@ int ff_celp_lp_synthesis_filter(int16_t *out, const int16_t *filter_coeffs, int i,n; for (n = 0; n < buffer_length; n++) { - int sum = -rounder, sum1; + int sum = rounder, sum1; for (i = 1; i <= filter_length; i++) - sum += (unsigned)(filter_coeffs[i-1] * out[n-i]); + sum -= (unsigned)(filter_coeffs[i-1] * out[n-i]); - sum1 = ((-sum >> 12) + in[n]) >> shift; + sum1 = ((sum >> 12) + in[n]) >> shift; sum = av_clip_int16(sum1); if (stop_on_overflow && sum != sum1) -- 2.17.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
