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avcodec/vp9block: fix runtime error: signed integer overflow: 196675 * 20670 cannot be represented in type 'int'
Fixes: 1710/clusterfuzz-testcase-minimized-4837032931098624
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: "Ronald S. Bultje" <rsbultje@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit d4ee767808
)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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@ -915,9 +915,9 @@ skip_eob:
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if (!--band_left)
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band_left = band_counts[++band];
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if (is_tx32x32)
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STORE_COEF(coef, rc, ((vp8_rac_get(c) ? -val : val) * qmul[!!i]) / 2);
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STORE_COEF(coef, rc, (int)((vp8_rac_get(c) ? -val : val) * (unsigned)qmul[!!i]) / 2);
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else
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STORE_COEF(coef, rc, (vp8_rac_get(c) ? -val : val) * qmul[!!i]);
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STORE_COEF(coef, rc, (vp8_rac_get(c) ? -val : val) * (unsigned)qmul[!!i]);
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nnz = (1 + cache[nb[i][0]] + cache[nb[i][1]]) >> 1;
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tp = p[band][nnz];
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} while (++i < n_coeffs);
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