Merge branch 'bc/hash-transition-interop-part-1'

SHA-256 transition.

* bc/hash-transition-interop-part-1:
  hex: print objects using the hash algorithm member
  hex: default to the_hash_algo on zero algorithm value
  builtin/pack-objects: avoid using struct object_id for pack hash
  commit-graph: don't store file hashes as struct object_id
  builtin/show-index: set the algorithm for object IDs
  hash: provide per-algorithm null OIDs
  hash: set, copy, and use algo field in struct object_id
  builtin/pack-redundant: avoid casting buffers to struct object_id
  Use the final_oid_fn to finalize hashing of object IDs
  hash: add a function to finalize object IDs
  http-push: set algorithm when reading object ID
  Always use oidread to read into struct object_id
  hash: add an algo member to struct object_id

1 files changed, 3 insertions, 3 deletions

diff --git a/diff-lib.c b/diff-lib.c
index e5a58c9259..c2ac9250fe 100644
--- a/diff-lib.c
+++ b/diff-lib.c
@@ -232,7 +232,7 @@ int run_diff_files(struct rev_info *revs, unsigned int option)
 				   ce_intent_to_add(ce)) {
 				newmode = ce_mode_from_stat(ce, st.st_mode);
 				diff_addremove(&revs->diffopt, '+', newmode,
-					       &null_oid, 0, ce->name, 0);
+					       null_oid(), 0, ce->name, 0);
 				continue;
 			}
 
@@ -249,7 +249,7 @@ int run_diff_files(struct rev_info *revs, unsigned int option)
 		}
 		oldmode = ce->ce_mode;
 		old_oid = &ce->oid;
-		new_oid = changed ? &null_oid : &ce->oid;
+		new_oid = changed ? null_oid() : &ce->oid;
 		diff_change(&revs->diffopt, oldmode, newmode,
 			    old_oid, new_oid,
 			    !is_null_oid(old_oid),
@@ -307,7 +307,7 @@ static int get_stat_data(const struct index_state *istate,
 						    0, dirty_submodule);
 		if (changed) {
 			mode = ce_mode_from_stat(ce, st.st_mode);
-			oid = &null_oid;
+			oid = null_oid();
 		}
 	}