zstd.Decode refuses to decode valid input. about zstd HOT 1 CLOSED

Hi @klauspost !

Thanks a lot for taking the time to run this through a fuzzer!
For this one, the zstd cli and the go library are not at feature parity (i.e: a payload encoded with one and decoded with the other will not usually) works. This is because the zstd cli adds some headers and implements more features (for example: checksums #43)
To confirm the behavior, I just tried your example with another bindings from a different author, the main one for python: https://pypi.org/project/zstd/

And I get the same results:

>>> import zstd
>>> with open("2aa9ddad029fa86d4e4831b22051a3b8414f015f.zst", "rb") as f:
...   a = f.read()
>>> zstd.decompress(a)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
zstd.Error: Decompression error: Corrupted block detected

The other 2 examples that the fuzzer uncovered looks like bugs though (#60 for sure, #59 needs more investigation)

from zstd.