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Merge branch 'en/merge-trivial-fix'

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When "git merge" notices that the merge can be resolved purely at
the tree level (without having to merge blobs) and the resulting
tree happens to already exist in the object store, it forgot to
update the index, which lead to an inconsistent state for later
operations.

* en/merge-trivial-fix:
  builtin/merge.c: fix a bug with trivial merges
  t7605: add a testcase demonstrating a bug with trivial merges
This commit is contained in:
Junio C Hamano
2016-04-25 15:17:15 -07:00
parent 9058b8f043 40d71940b6
commit f276cae187
2 changed files with 13 additions and 1 deletions
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8
builtin/merge.c
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@ -822,6 +822,14 @@ static int merge_trivial(struct commit *head, struct commit_list *remoteheads)
{
unsigned char result_tree[20], result_commit[20];
struct commit_list *parents, **pptr = &parents;
static struct lock_file lock;
hold_locked_index(&lock, 1);
refresh_cache(REFRESH_QUIET);
if (active_cache_changed &&
write_locked_index(&the_index, &lock, COMMIT_LOCK))
return error(_("Unable to write index."));
rollback_lock_file(&lock);
write_tree_trivial(result_tree);
printf(_("Wonderful.\n"));