Fixes: negation of -2147483648 cannot be represented in type 'int32_t' (aka 'int'); cast to an unsigned type to negate this value to itself
Fixes: signed integer overflow: -2147483648 - 1 cannot be represented in type 'int32_t' (aka 'int')
Fixes: 20492/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_IFF_ILBM_fuzzer-5764066459254784
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
opcode--;
}
} else {
- opcode = -opcode;
while (opcode && bytestream2_get_bytes_left(&gb) > 0) {
bytestream2_put_be32(&pb, bytestream2_get_be32(&gb));
bytestream2_skip_p(&pb, pitch - 4);
- opcode--;
+ opcode++;
}
}
entries--;