Hi, this small patch series fixes out-of-memory errors on NonStop with the reftable backend. These errors are caused by zero-sized allocations, which return `NULL` pointers on NonStop. Thanks! Patrick --- Patrick Steinhardt (4): reftable/stack: don't perform auto-compaction with less than two tables reftable/merged: fix zero-sized allocation when there are no readers reftable/stack: fix zero-sized allocation when there are no readers reftable/basics: return NULL on zero-sized allocations reftable/basics.c | 7 +++++++ reftable/merged.c | 12 +++++++----- reftable/stack.c | 47 ++++++++++++++++++++++++++--------------------- 3 files changed, 40 insertions(+), 26 deletions(-) --- base-commit: ff795a5c5ed2e2d07c688c217a615d89e3f5733b change-id: 20241220-b4-pks-reftable-oom-fix-without-readers-c7d8fda0694d