Merge branch 'tb/object-access-overflow-protection'

Various offset computation in the code that accesses the packfiles
and other data in the object layer has been hardened against
arithmetic overflow, especially on 32-bit systems.

* tb/object-access-overflow-protection:
  commit-graph.c: prevent overflow in `verify_commit_graph()`
  commit-graph.c: prevent overflow in `write_commit_graph()`
  commit-graph.c: prevent overflow in `merge_commit_graph()`
  commit-graph.c: prevent overflow in `split_graph_merge_strategy()`
  commit-graph.c: prevent overflow in `load_tree_for_commit()`
  commit-graph.c: prevent overflow in `fill_commit_in_graph()`
  commit-graph.c: prevent overflow in `fill_commit_graph_info()`
  commit-graph.c: prevent overflow in `load_oid_from_graph()`
  commit-graph.c: prevent overflow in add_graph_to_chain()
  commit-graph.c: prevent overflow in `write_commit_graph_file()`
  pack-bitmap.c: ensure that eindex lookups don't overflow
  midx.c: prevent overflow in `fill_included_packs_batch()`
  midx.c: prevent overflow in `write_midx_internal()`
  midx.c: store `nr`, `alloc` variables as `size_t`'s
  midx.c: prevent overflow in `nth_midxed_offset()`
  midx.c: prevent overflow in `nth_midxed_object_oid()`
  midx.c: use `size_t`'s for fanout nr and alloc
  packfile.c: use checked arithmetic in `nth_packed_object_offset()`
  packfile.c: prevent overflow in `load_idx()`
  packfile.c: prevent overflow in `nth_packed_object_id()`

1 files changed, 1 insertions, 1 deletions

diff --git a/object-store-ll.h b/object-store-ll.h
index e8f22cdb1b..26a3895c82 100644
--- a/object-store-ll.h
+++ b/object-store-ll.h
@@ -106,7 +106,7 @@ struct packed_git {
 	const void *index_data;
 	size_t index_size;
 	uint32_t num_objects;
-	uint32_t crc_offset;
+	size_t crc_offset;
 	struct oidset bad_objects;
 	int index_version;
 	time_t mtime;