Add: bytesrw.0.4.1

[dbuenzli]

• Add: bytesrw.0.4.1 home, doc, issues
  Composable byte stream readers and writers for OCaml

---

bytesrw v0.4.1 2026-09-12 Zagreb

• Add Bytes.Writer.make' which allows to access the writer in the
  write function.

• Fix Bytesrw_fmt.Slice.pp' ~head:true, the ellipsis could be
  missing on truncated output. Thanks to Anil Madhavapeddy for the
  report.

• Fix Bytes.Slice.of_bigbytes_or_eod on empty ranges. It raised
  Invalid_argument instead of returning eod. Thanks to Anil
  Madhavapeddy for the report and the fix.

• Fix Bytes.Reader.empty ignoring its pos and slice_length
  optional argument. Indirectly affected the result of
  Bytes.Reader.{of_bytes,of_string,of_slice,sub} when those would
  return an empty stream reader. Thanks to Anil Madhavapeddy for the
  report and the fix.

• Fix Bytes.Writer.limit filter raising Invalid_argument instead
  of a Stream.Limit error if the last write is exactly in the
  limit but the next one blows it (#15). Thanks to Vladimir N. Silyaev
  and Anil Madhavapeddy for the report and the fix.

• Fix Bytes.Writer.limit resulting's writer Writer.pos final value.
  Cap it at what is supposed to be seen by the limit.
  Thanks to Anil Madhavapeddy for the report and the fix.

• Fix Bytesrw_zstd.decompress_writes position error reporting.
  The reported positions were in the decompressed stream rather
  than in the compressed stream.

• Fix Bytesrw_sysrandom potential unwarranted panics on Linux due to short
  getrandom results or EINTR. Thanks to Anil Madhavapeddy for the
  report and the fix.

• Fix Bytesrw_xxhash.Xxhash_128.update using Xxhash_64.update.
  This doesn't change previously generated hashes as libxxahsh 0.8.x
  use the same implementation for both. Thanks to Anil Madhavapeddy
  for the report and the fix.

Bytesrw_crypto

• Add Psa.Alg.is_tls12_psk_to_ms wrongly assumed not to be in
  TF-PSA-Crypto due to a typo. Thanks to Anil Madhavapeddy for the
  report and the fix.

• Fix C binding to Psa.Alg.is_rsa_oaep and Psa.Mac.max_size, they
  were returning garbage. Thanks to Anil Madhavapeddy for the report
  and the fix.

• Fix Psa.Key_agreement.raw_output_size returning garbage due to a
  Val_long used instead of Long_val. Thanks to Anil Madhavapeddy
  for the report and the fix.

• Fix Psa.Key_lifetime.from_persistaence_and_location, the components
  were combined with logand instead of logor. Thanks to Anil
  Madhavapeddy for the report and the fix.

• Fix Psa.Aead.decrypt stub in bytecode, it was calling the encrypt
  stub. Thanks to Anil Madhavapeddy for the report and the fix.

• Fix Psa.Key_type.is_{public_key,key_pair}. They were implemented
  as is_assymetric. Thanks to Anil Madhavapeddy for the report and
  the fix.

• Fix Psa.Status.message have a user friendly message for
  Error.{insufficient_entropy,invalid_padding}. Thanks to Anil
  Madhavapeddy for the report and the fix.

• Fix Psa.Alg.pp, SHA3-512 was printed as SHA3-256. to Anil
  Madhavapeddy for the report and the fix.

• Fix Psa.Key_type.pp DH key-pairs where printed as an unknown key type.
  Thanks to Anil Madhavapeddy for the report and the fix.

• Rename inexisting name Psa.Alg.cbc to Psa.Alg.cmac. Thanks to Anil
  Madhavapeddy for the report and the fix.

Bytesrw_tls

• Fix Bytesrw_tls reader and writer, reading and writing beyond slice
  lengths. Thanks to Anil Madhavapeddy for the report and the fix.

• Fix Bytesrw_tls.X509_certchain.{self_signed,ca_signed} memory leak.
  Thanks to Anil Madhavapeddy for the report and the fix.

• Fix Bytesrw_tls.X509_certchain.Private_key.write_pem_file. The C
  function handling the write was not zeroing a temporary stack
  allocated buffer holding the private key. Thanks to Anil
  Madhavapeddy for the report.

Bytesrw_zlib

• Improve Bytesrw_zlib error reporting. Thanks to Anil Madhavapeddy for
  the fix.

• Fix Bytesrw_zlib.{Deflate,Zlib,Ggzip}.decompress_writes position error
  reporting. The reported positions were in the decompressed stream rather
  than in the compressed stream. Thanks to Anil Madhavapeddy for the report.

• Fix Bytesrw_zlib.Gzip.decompress_writes accepting a truncated last
  member intead of erroring. Thanks to Anil Madhavapeddy for the report
  and the fix.

---

Use b0 -- .opam publish bytesrw.0.4.1 to update the pull request.