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 | 105 ++++++++++++++++++++++++++- reftable/reftable-writer.h | 2 +- reftable/writer.c | 9 ++- 7 files changed, 136 insertions(+), 19 deletions(-) base-commit: 45fe28c951c3e70666ee4ef8379772851a8e4d32 Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-git-1185%2Fhanwen%2Fobj-id-len-v3 Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-git-1185/hanwen/obj-id-len-v3 Pull-Request: https://github.com/git/git/pull/1185 Range-diff vs v2: 1: 80d29e8f269 = 1: 80d29e8f269 Documentation: object_id_len goes up to 31 2: 4c1a19fc4ae ! 2: 68e7bc32ff8 reftable: reject 0 object_id_len @@ Commit message reftable: reject 0 object_id_len The spec says 2 <= object_id_len <= 31. We are lenient and allow 1, - but we forbid 0, so we can we can be sure that we never read a - 0-length key. + but we forbid 0, so we can be sure that we never read a 0-length key. Signed-off-by: Han-Wen Nienhuys <hanwen@xxxxxxxxxx> 3: 600b115f8b1 = 3: 8b5aebdb07a reftable: add a test that verifies that writing empty keys fails 4: ba036ee8543 ! 4: a9372cacd1b reftable: avoid writing empty keys at the block layer @@ reftable/block.c: int block_reader_first_key(struct block_reader *br, struct str if (n < 0) return n; + if (!key->len) -+ return -1; ++ return REFTABLE_FORMAT_ERROR; return 0; } 5: 2bd3d44ba57 = 5: 0b8a42399dd reftable: ensure that obj_id_len is >= 2 on writing 6: 82d36ee0e0d = 6: bdccd969475 reftable: add test for length of disambiguating prefix 7: c6ffdb3471c = 7: 72499a14e38 reftable: rename writer_stats to reftable_writer_stats -- gitgitgadget
