How to print out the blockheader, prior to hashing with sha256?

[attilaaf]

Can someone help me understand where the complete block header is located, prior to hashing?

I printed out pdata, but it does not seem to be correct.

Thanks in advance

[pooler]

Sorry but this is an issue tracker, not a forum.
That said, you probably printed the right data but with the wrong endianness.