[PATCH 0/4] reftable: fix realloc error handling

The current handling of reallocation errors leaks the original allocation in most cases and corrupts the capacity variable. Fix that in REFTABLE_ALLOC_GROW and by providing a new macro REFTABLE_ALLOC_GROW_OR_NULL -- solve this somewhat tricky issue centrally, with minimal impact to calling code.

And the last two patches add error handling to the remaining places that still lack it.

  reftable: avoid leaks on realloc error
  reftable: fix allocation count on realloc error
  reftable: handle realloc error in parse_names()
  t-reftable-merged: handle realloc errors

 reftable/basics.c                | 14 ++++-------
 reftable/basics.h                | 41 +++++++++++++++++++++++++-------
 reftable/block.c                 | 10 ++++----
 reftable/pq.c                    |  2 +-
 reftable/record.c                | 12 +++++-----
 reftable/stack.c                 |  8 ++++---
 reftable/writer.c                |  5 ++--
 t/unit-tests/t-reftable-merged.c |  4 ++--
 8 files changed, 60 insertions(+), 36 deletions(-)

-- 2.47.1