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-rw-r--r--merge-recursive.c34
1 files changed, 28 insertions, 6 deletions
diff --git a/merge-recursive.c b/merge-recursive.c
index 7dad164692..869092f7b9 100644
--- a/merge-recursive.c
+++ b/merge-recursive.c
@@ -513,6 +513,25 @@ static void record_df_conflict_files(struct merge_options *o,
struct rename {
struct diff_filepair *pair;
+ /*
+ * Purpose of src_entry and dst_entry:
+ *
+ * If 'before' is renamed to 'after' then src_entry will contain
+ * the versions of 'before' from the merge_base, HEAD, and MERGE in
+ * stages 1, 2, and 3; dst_entry will contain the respective
+ * versions of 'after' in corresponding locations. Thus, we have a
+ * total of six modes and oids, though some will be null. (Stage 0
+ * is ignored; we're interested in handling conflicts.)
+ *
+ * Since we don't turn on break-rewrites by default, neither
+ * src_entry nor dst_entry can have all three of their stages have
+ * non-null oids, meaning at most four of the six will be non-null.
+ * Also, since this is a rename, both src_entry and dst_entry will
+ * have at least one non-null oid, meaning at least two will be
+ * non-null. Of the six oids, a typical rename will have three be
+ * non-null. Only two implies a rename/delete, and four implies a
+ * rename/add.
+ */
struct stage_data *src_entry;
struct stage_data *dst_entry;
unsigned processed:1;
@@ -1009,8 +1028,9 @@ static int merge_file_1(struct merge_options *o,
if ((merge_status < 0) || !result_buf.ptr)
ret = err(o, _("Failed to execute internal merge"));
- if (!ret && write_sha1_file(result_buf.ptr, result_buf.size,
- blob_type, result->oid.hash))
+ if (!ret &&
+ write_object_file(result_buf.ptr, result_buf.size,
+ blob_type, &result->oid))
ret = err(o, _("Unable to add %s to database"),
a->path);
@@ -1998,10 +2018,10 @@ int merge_trees(struct merge_options *o,
get_files_dirs(o, merge);
entries = get_unmerged();
- record_df_conflict_files(o, entries);
re_head = get_renames(o, head, common, head, merge, entries);
re_merge = get_renames(o, merge, common, head, merge, entries);
clean = process_renames(o, re_head, re_merge);
+ record_df_conflict_files(o, entries);
if (clean < 0)
goto cleanup;
for (i = entries->nr-1; 0 <= i; i--) {
@@ -2198,11 +2218,13 @@ int merge_recursive_generic(struct merge_options *o,
hold_locked_index(&lock, LOCK_DIE_ON_ERROR);
clean = merge_recursive(o, head_commit, next_commit, ca,
result);
- if (clean < 0)
+ if (clean < 0) {
+ rollback_lock_file(&lock);
return clean;
+ }
- if (active_cache_changed &&
- write_locked_index(&the_index, &lock, COMMIT_LOCK))
+ if (write_locked_index(&the_index, &lock,
+ COMMIT_LOCK | SKIP_IF_UNCHANGED))
return err(o, _("Unable to write index."));
return clean ? 0 : 1;