github.com/tmoore22/go-ethereum@v1.10.22-0.20220814113424-76f4d8bc4994/cmd/evm/testdata/4/readme.md (about)

     1  These files examplify a transition where a transaction (excuted on block 5) requests
     2  the blockhash for block `4`, but where the hash for that block is missing. 
     3  It's expected that executing these should cause `exit` with errorcode `4`.