BZip2Error.wrongCRC when decompressing

[MBLRN]

Hello
I’m getting a BZip2Error.wrongCRC error using BZip2 with the following file:
problem.dat.zip
The file needs decompressing first before using:

let uncompressed = try Data(contentsOf: "problem.dat")
let compressed = BZip2.compress(data: uncompressed)
let backAgain = try BZip2.decompress(data: compressed)

Cheers.

[tsolomko]

Thank you for reporting this issue! It is very peculiar and in fact quite serious.

As it turns out it is not related to CRC computation. Instead, the so called "pointer" was set incorrectly in Burrows-Wheeler transform during BZip2 compression. I am very surprised that no one has encountered this problem until now.

This issue was fixed in b1fe47f.

[tsolomko]

The fix was released as part of the 4.8.4 update.