[PATCH 0/7] reftable: avoid reading and writing empty keys

this series makes sure that the object record does not have to consider empty keys (and therefore, a NULL memcpy destination)

while we're at it add some more tests, and fix a naming mistake.

Han-Wen Nienhuys (7):
  Documentation: object_id_len goes up to 31
  reftable: reject 0 object_id_len
  reftable: add a test that verifies that writing empty keys fails
  reftable: avoid writing empty keys at the block layer
  reftable: ensure that obj_id_len is >= 2 on writing
  reftable: add test for length of disambiguating prefix
  reftable: rename writer_stats to reftable_writer_stats

 Documentation/technical/reftable.txt |   2 +-
 reftable/block.c                     |  27 ++++---
 reftable/block_test.c                |   5 ++
 reftable/reader.c                    |   5 ++
 reftable/readwrite_test.c            | 103 ++++++++++++++++++++++++++-
 reftable/reftable-writer.h           |   2 +-
 reftable/writer.c                    |   9 +--
 7 files changed, 135 insertions(+), 18 deletions(-)

base-commit: 90d242d36e248acfae0033274b524bfa55a947fd
Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-git-1185%2Fhanwen%2Fobj-id-len-v1
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-git-1185/hanwen/obj-id-len-v1
Pull-Request: https://github.com/git/git/pull/1185