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avcodec/vc2enc: Clear coef_buf on allocation
Fixes: Use of uninitialized memory Fixes: assertion failure Reviewed-by: <atomnuker> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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@ -1173,7 +1173,7 @@ static av_cold int vc2_encode_init(AVCodecContext *avctx)
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p->dwt_width = w = FFALIGN(p->width, (1 << s->wavelet_depth));
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p->dwt_height = h = FFALIGN(p->height, (1 << s->wavelet_depth));
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p->coef_stride = FFALIGN(p->dwt_width, 32);
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p->coef_buf = av_malloc(p->coef_stride*p->dwt_height*sizeof(dwtcoef));
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p->coef_buf = av_mallocz(p->coef_stride*p->dwt_height*sizeof(dwtcoef));
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if (!p->coef_buf)
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goto alloc_fail;
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for (level = s->wavelet_depth-1; level >= 0; level--) {
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